/*!
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\file gd32e23x_usart.c
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\brief USART driver
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\version 2019-02-19, V1.0.0, firmware for GD32E23x
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*/
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/*
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Copyright (c) 2019, GigaDevice Semiconductor Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include "gd32e23x_usart.h"
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/*!
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\brief reset USART
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_deinit(uint32_t usart_periph)
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{
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switch(usart_periph){
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case USART0:
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/* reset USART0 */
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rcu_periph_reset_enable(RCU_USART0RST);
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rcu_periph_reset_disable(RCU_USART0RST);
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break;
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case USART1:
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/* reset USART1 */
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rcu_periph_reset_enable(RCU_USART1RST);
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rcu_periph_reset_disable(RCU_USART1RST);
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break;
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default:
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break;
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}
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}
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/*!
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\brief configure USART baud rate value
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] baudval: baud rate value
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\param[out] none
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\retval none
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*/
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void usart_baudrate_set(uint32_t usart_periph, uint32_t baudval)
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{
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uint32_t uclk = 0U, intdiv = 0U, fradiv = 0U, udiv = 0U;
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switch(usart_periph){
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/* get clock frequency */
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case USART0:
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/* get USART0 clock */
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uclk = rcu_clock_freq_get(CK_USART);
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break;
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case USART1:
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/* get USART1 clock */
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uclk = rcu_clock_freq_get(CK_APB1);
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break;
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default:
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break;
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}
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if(USART_CTL0(usart_periph) & USART_CTL0_OVSMOD){
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/* oversampling by 8, configure the value of USART_BAUD */
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udiv = ((2U*uclk)+baudval/2U)/baudval;
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intdiv = udiv & 0x0000fff0U;
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fradiv = (udiv>>1U) & 0x00000007U;
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USART_BAUD(usart_periph) = ((USART_BAUD_FRADIV | USART_BAUD_INTDIV) & (intdiv | fradiv));
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}else{
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/* oversampling by 16, configure the value of USART_BAUD */
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udiv = (uclk+baudval/2U)/baudval;
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intdiv = udiv & 0x0000fff0U;
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fradiv = udiv & 0x0000000fU;
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USART_BAUD(usart_periph) = ((USART_BAUD_FRADIV | USART_BAUD_INTDIV) & (intdiv | fradiv));
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}
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}
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/*!
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\brief configure USART parity
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] paritycfg: USART parity configure
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only one parameter can be selected which is shown as below:
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\arg USART_PM_NONE: no parity
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\arg USART_PM_ODD: odd parity
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\arg USART_PM_EVEN: even parity
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\param[out] none
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\retval none
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*/
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void usart_parity_config(uint32_t usart_periph, uint32_t paritycfg)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* clear USART_CTL0 PM,PCEN bits */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_PM | USART_CTL0_PCEN);
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/* configure USART parity mode */
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USART_CTL0(usart_periph) |= paritycfg;
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}
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/*!
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\brief configure USART word length
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] wlen: USART word length configure
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only one parameter can be selected which is shown as below:
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\arg USART_WL_8BIT: 8 bits
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\arg USART_WL_9BIT: 9 bits
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\param[out] none
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\retval none
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*/
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void usart_word_length_set(uint32_t usart_periph, uint32_t wlen)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* clear USART_CTL0 WL bit */
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USART_CTL0(usart_periph) &= ~USART_CTL0_WL;
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/* configure USART word length */
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USART_CTL0(usart_periph) |= wlen;
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}
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/*!
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\brief configure USART stop bit length
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] stblen: USART stop bit configure
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only one parameter can be selected which is shown as below:
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\arg USART_STB_1BIT: 1 bit
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\arg USART_STB_0_5BIT: 0.5bit
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\arg USART_STB_2BIT: 2 bits
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\arg USART_STB_1_5BIT: 1.5bit
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\param[out] none
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\retval none
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*/
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void usart_stop_bit_set(uint32_t usart_periph, uint32_t stblen)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* clear USART_CTL1 STB bits */
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USART_CTL1(usart_periph) &= ~USART_CTL1_STB;
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USART_CTL1(usart_periph) |= stblen;
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}
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/*!
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\brief enable USART
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_enable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) |= USART_CTL0_UEN;
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}
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/*!
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\brief disable USART
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_disable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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}
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/*!
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\brief configure USART transmitter
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] txconfig: enable or disable USART transmitter
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only one parameter can be selected which is shown as below:
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\arg USART_TRANSMIT_ENABLE: enable USART transmission
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\arg USART_TRANSMIT_DISABLE: enable USART transmission
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\param[out] none
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\retval none
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*/
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void usart_transmit_config(uint32_t usart_periph, uint32_t txconfig)
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{
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USART_CTL0(usart_periph) &= ~USART_CTL0_TEN;
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/* configure transfer mode */
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USART_CTL0(usart_periph) |= txconfig;
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}
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/*!
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\brief configure USART receiver
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] rxconfig: enable or disable USART receiver
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only one parameter can be selected which is shown as below:
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\arg USART_RECEIVE_ENABLE: enable USART reception
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\arg USART_RECEIVE_DISABLE: disable USART reception
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\param[out] none
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\retval none
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*/
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void usart_receive_config(uint32_t usart_periph, uint32_t rxconfig)
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{
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USART_CTL0(usart_periph) &= ~USART_CTL0_REN;
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/* configure receiver mode */
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USART_CTL0(usart_periph) |= rxconfig;
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}
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/*!
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\brief data is transmitted/received with the LSB/MSB first
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] msbf: LSB/MSB
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only one parameter can be selected which is shown as below:
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\arg USART_MSBF_LSB: LSB first
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\arg USART_MSBF_MSB: MSB first
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\param[out] none
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\retval none
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*/
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void usart_data_first_config(uint32_t usart_periph, uint32_t msbf)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* configure LSB or MSB first */
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USART_CTL1(usart_periph) &= ~(USART_CTL1_MSBF);
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USART_CTL1(usart_periph) |= (USART_CTL1_MSBF & msbf);
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}
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/*!
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\brief USART inverted configure
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] invertpara: refer to usart_invert_enum
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only one parameter can be selected which is shown as below:
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\arg USART_DINV_ENABLE: data bit level inversion
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\arg USART_DINV_DISABLE: data bit level not inversion
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\arg USART_TXPIN_ENABLE: TX pin level inversion
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\arg USART_TXPIN_DISABLE: TX pin level not inversion
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\arg USART_RXPIN_ENABLE: RX pin level inversion
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\arg USART_RXPIN_DISABLE: RX pin level not inversion
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\arg USART_SWAP_ENABLE: swap TX/RX pins
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\arg USART_SWAP_DISABLE: not swap TX/RX pins
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\param[out] none
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\retval none
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*/
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void usart_invert_config(uint32_t usart_periph, usart_invert_enum invertpara)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* inverted or not the specified signal */
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switch(invertpara){
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case USART_DINV_ENABLE:
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USART_CTL1(usart_periph) |= USART_CTL1_DINV;
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break;
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case USART_DINV_DISABLE:
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USART_CTL1(usart_periph) &= ~(USART_CTL1_DINV);
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break;
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case USART_TXPIN_ENABLE:
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USART_CTL1(usart_periph) |= USART_CTL1_TINV;
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break;
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case USART_TXPIN_DISABLE:
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USART_CTL1(usart_periph) &= ~(USART_CTL1_TINV);
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break;
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case USART_RXPIN_ENABLE:
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USART_CTL1(usart_periph) |= USART_CTL1_RINV;
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break;
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case USART_RXPIN_DISABLE:
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USART_CTL1(usart_periph) &= ~(USART_CTL1_RINV);
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break;
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case USART_SWAP_ENABLE:
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USART_CTL1(usart_periph) |= USART_CTL1_STRP;
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break;
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case USART_SWAP_DISABLE:
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USART_CTL1(usart_periph) &= ~(USART_CTL1_STRP);
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break;
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default:
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break;
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}
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}
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/*!
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\brief enable the USART overrun function
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_overrun_enable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* enable overrun function */
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USART_CTL2(usart_periph) &= ~(USART_CTL2_OVRD);
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}
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/*!
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\brief disable the USART overrun function
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_overrun_disable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* disable overrun function */
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USART_CTL2(usart_periph) |= USART_CTL2_OVRD;
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}
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/*!
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\brief configure the USART oversample mode
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] oversamp: oversample value
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only one parameter can be selected which is shown as below:
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\arg USART_OVSMOD_8: oversampling by 8
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\arg USART_OVSMOD_16: oversampling by 16
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\param[out] none
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\retval none
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*/
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void usart_oversample_config(uint32_t usart_periph, uint32_t oversamp)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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/* clear OVSMOD bit */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_OVSMOD);
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USART_CTL0(usart_periph) |= oversamp;
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}
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/*!
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\brief configure the sample bit method
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] osb: sample bit
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only one parameter can be selected which is shown as below:
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\arg USART_OSB_1BIT: 1 bit
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\arg USART_OSB_3BIT: 3 bits
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\param[out] none
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\retval none
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*/
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void usart_sample_bit_config(uint32_t usart_periph, uint32_t osb)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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USART_CTL2(usart_periph) &= ~(USART_CTL2_OSB);
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USART_CTL2(usart_periph) |= osb;
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}
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/*!
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\brief enable receiver timeout
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\param[in] usart_periph: USARTx(x=0)
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\param[out] none
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\retval none
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*/
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void usart_receiver_timeout_enable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) |= USART_CTL1_RTEN;
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}
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/*!
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\brief disable receiver timeout
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\param[in] usart_periph: USARTx(x=0)
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\param[out] none
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\retval none
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*/
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void usart_receiver_timeout_disable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) &= ~(USART_CTL1_RTEN);
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}
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/*!
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\brief configure receiver timeout threshold
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\param[in] usart_periph: USARTx(x=0)
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\param[in] rtimeout: 0x00000000-0x00FFFFFF, receiver timeout value in terms of number of baud clocks
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\param[out] none
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\retval none
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*/
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void usart_receiver_timeout_threshold_config(uint32_t usart_periph, uint32_t rtimeout)
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{
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USART_RT(usart_periph) &= ~(USART_RT_RT);
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USART_RT(usart_periph) |= rtimeout;
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}
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/*!
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\brief USART transmit data function
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] data: data of transmission
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\param[out] none
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\retval none
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*/
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void usart_data_transmit(uint32_t usart_periph, uint32_t data)
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{
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USART_TDATA(usart_periph) = (USART_TDATA_TDATA & data);
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}
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/*!
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\brief USART receive data function
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval data of received
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*/
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uint16_t usart_data_receive(uint32_t usart_periph)
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{
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return (uint16_t)(GET_BITS(USART_RDATA(usart_periph), 0U, 8U));
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}
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/*!
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\brief enable auto baud rate detection
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\param[in] usart_periph: USARTx(x=0)
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\param[out] none
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\retval none
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*/
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void usart_autobaud_detection_enable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) |= USART_CTL1_ABDEN;
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}
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/*!
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\brief disable auto baud rate detection
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\param[in] usart_periph: USARTx(x=0)
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\param[out] none
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\retval none
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*/
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void usart_autobaud_detection_disable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) &= ~(USART_CTL1_ABDEN);
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}
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/*!
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\brief configure auto baud rate detection mode
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\param[in] usart_periph: USARTx(x=0)
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\param[in] abdmod: auto baud rate detection mode
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only one parameter can be selected which is shown as below:
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\arg USART_ABDM_FTOR: falling edge to rising edge measurement
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\arg USART_ABDM_FTOF: falling edge to falling edge measurement
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\param[out] none
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\retval none
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*/
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void usart_autobaud_detection_mode_config(uint32_t usart_periph, uint32_t abdmod)
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{
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/* reset ABDM bits */
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USART_CTL1(usart_periph) &= ~(USART_CTL1_ABDM);
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USART_CTL1(usart_periph) |= abdmod;
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}
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/*!
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\brief address of the USART terminal
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] addr: 0x00-0xFF, address of USART terminal
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\param[out] none
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\retval none
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*/
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void usart_address_config(uint32_t usart_periph, uint8_t addr)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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USART_CTL1(usart_periph) &= ~(USART_CTL1_ADDR);
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USART_CTL1(usart_periph) |= (USART_CTL1_ADDR & (((uint32_t)addr) << 24));
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}
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/*!
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\brief configure address detection mode
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\param[in] usart_periph: USARTx(x=0,1)
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\param[in] addmod: address detection mode
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only one parameter can be selected which is shown as below:
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\arg USART_ADDM_4BIT: 4 bits
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\arg USART_ADDM_FULLBIT: full bits
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\param[out] none
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\retval none
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*/
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void usart_address_detection_mode_config(uint32_t usart_periph, uint32_t addmod)
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{
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/* disable USART */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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USART_CTL1(usart_periph) &= ~(USART_CTL1_ADDM);
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USART_CTL1(usart_periph) |= USART_CTL1_ADDM & (addmod);
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}
|
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/*!
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\brief enable mute mode
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_mute_mode_enable(uint32_t usart_periph)
|
{
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USART_CTL0(usart_periph) |= USART_CTL0_MEN;
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}
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/*!
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\brief disable mute mode
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
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\retval none
|
*/
|
void usart_mute_mode_disable(uint32_t usart_periph)
|
{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_MEN);
|
}
|
|
/*!
|
\brief configure wakeup method in mute mode
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] wmethod: two methods be used to enter or exit the mute mode
|
only one parameter can be selected which is shown as below:
|
\arg USART_WM_IDLE: idle line
|
\arg USART_WM_ADDR: address mark
|
\param[out] none
|
\retval none
|
*/
|
void usart_mute_mode_wakeup_config(uint32_t usart_periph, uint32_t wmethod)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
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USART_CTL0(usart_periph) &= ~(USART_CTL0_WM);
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USART_CTL0(usart_periph) |= wmethod;
|
}
|
|
/*!
|
\brief enable LIN mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_lin_mode_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL1(usart_periph) |= USART_CTL1_LMEN;
|
}
|
|
/*!
|
\brief disable LIN mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_lin_mode_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL1(usart_periph) &= ~(USART_CTL1_LMEN);
|
}
|
|
/*!
|
\brief LIN break detection length
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] lblen: LIN break detection length
|
only one parameter can be selected which is shown as below:
|
\arg USART_LBLEN_10B: 10 bits break detection
|
\arg USART_LBLEN_11B: 11 bits break detection
|
\param[out] none
|
\retval none
|
*/
|
void usart_lin_break_detection_length_config(uint32_t usart_periph, uint32_t lblen)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
USART_CTL1(usart_periph) &= ~(USART_CTL1_LBLEN);
|
USART_CTL1(usart_periph) |= USART_CTL1_LBLEN & (lblen);
|
}
|
|
/*!
|
\brief enable half-duplex mode
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_halfduplex_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) |= USART_CTL2_HDEN;
|
}
|
|
/*!
|
\brief disable half-duplex mode
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_halfduplex_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_HDEN);
|
}
|
|
/*!
|
\brief enable clock
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_clock_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL1(usart_periph) |= USART_CTL1_CKEN;
|
}
|
|
/*!
|
\brief disable clock
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_clock_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL1(usart_periph) &= ~(USART_CTL1_CKEN);
|
}
|
|
/*!
|
\brief configure USART synchronous mode parameters
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] clen: last bit clock pulse
|
only one parameter can be selected which is shown as below:
|
\arg USART_CLEN_NONE: clock pulse of the last data bit (MSB) is not output to the CK pin
|
\arg USART_CLEN_EN: clock pulse of the last data bit (MSB) is output to the CK pin
|
\param[in] cph: clock phase
|
only one parameter can be selected which is shown as below:
|
\arg USART_CPH_1CK: first clock transition is the first data capture edge
|
\arg USART_CPH_2CK: second clock transition is the first data capture edge
|
\param[in] cpl: clock polarity
|
only one parameter can be selected which is shown as below:
|
\arg USART_CPL_LOW: steady low value on CK pin
|
\arg USART_CPL_HIGH: steady high value on CK pin
|
\param[out] none
|
\retval none
|
*/
|
void usart_synchronous_clock_config(uint32_t usart_periph, uint32_t clen, uint32_t cph, uint32_t cpl)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
/* reset USART_CTL1 CLEN,CPH,CPL bits */
|
USART_CTL1(usart_periph) &= ~(USART_CTL1_CLEN | USART_CTL1_CPH | USART_CTL1_CPL);
|
|
USART_CTL1(usart_periph) |= (USART_CTL1_CLEN & clen);
|
USART_CTL1(usart_periph) |= (USART_CTL1_CPH & cph);
|
USART_CTL1(usart_periph) |= (USART_CTL1_CPL & cpl);
|
}
|
|
/*!
|
\brief configure guard time value in smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] guat: 0x00-0xFF
|
\param[out] none
|
\retval none
|
*/
|
void usart_guard_time_config(uint32_t usart_periph, uint32_t guat)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_GP(usart_periph) &= ~(USART_GP_GUAT);
|
USART_GP(usart_periph) |= (USART_GP_GUAT & ((guat) << 8));
|
}
|
|
/*!
|
\brief enable smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_mode_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) |= USART_CTL2_SCEN;
|
}
|
|
/*!
|
\brief disable smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_mode_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_SCEN);
|
}
|
|
/*!
|
\brief enable NACK in smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_mode_nack_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) |= USART_CTL2_NKEN;
|
}
|
|
/*!
|
\brief disable NACK in smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_mode_nack_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_NKEN);
|
}
|
|
/*!
|
\brief enable early NACK in smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_mode_early_nack_enable(uint32_t usart_periph)
|
{
|
USART_RFCS(usart_periph) |= USART_RFCS_ELNACK;
|
}
|
|
/*!
|
\brief disable early NACK in smartcard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_mode_early_nack_disable(uint32_t usart_periph)
|
{
|
USART_RFCS(usart_periph) &= ~USART_RFCS_ELNACK;
|
}
|
|
/*!
|
\brief configure smartcard auto-retry number
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] scrtnum: 0x00000000-0x00000007, smartcard auto-retry number
|
\param[out] none
|
\retval none
|
*/
|
void usart_smartcard_autoretry_config(uint32_t usart_periph, uint32_t scrtnum)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_SCRTNUM);
|
USART_CTL2(usart_periph) |= (USART_CTL2_SCRTNUM & (scrtnum << 17));
|
}
|
|
/*!
|
\brief configure block length
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] bl: 0x00000000-0x000000FF
|
\param[out] none
|
\retval none
|
*/
|
void usart_block_length_config(uint32_t usart_periph, uint32_t bl)
|
{
|
USART_RT(usart_periph) &= ~(USART_RT_BL);
|
USART_RT(usart_periph) |= (USART_RT_BL & ((bl) << 24));
|
}
|
|
/*!
|
\brief enable IrDA mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_irda_mode_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) |= USART_CTL2_IREN;
|
}
|
|
/*!
|
\brief disable IrDA mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_irda_mode_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_IREN);
|
}
|
|
/*!
|
\brief configure the peripheral clock prescaler in USART IrDA low-power or SmartCard mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] psc: 0x00000000-0x000000FF
|
\param[out] none
|
\retval none
|
*/
|
void usart_prescaler_config(uint32_t usart_periph, uint32_t psc)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
USART_GP(usart_periph) &= ~(USART_GP_PSC);
|
USART_GP(usart_periph) |= psc;
|
}
|
|
/*!
|
\brief configure IrDA low-power
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] irlp: IrDA low-power or normal
|
only one parameter can be selected which is shown as below:
|
\arg USART_IRLP_LOW: low-power
|
\arg USART_IRLP_NORMAL: normal
|
\param[out] none
|
\retval none
|
*/
|
void usart_irda_lowpower_config(uint32_t usart_periph, uint32_t irlp)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_IRLP);
|
USART_CTL2(usart_periph) |= (USART_CTL2_IRLP & irlp);
|
}
|
|
/*!
|
\brief configure hardware flow control RTS
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] rtsconfig: enable or disable RTS
|
only one parameter can be selected which is shown as below:
|
\arg USART_RTS_ENABLE: enable RTS
|
\arg USART_RTS_DISABLE: disable RTS
|
\param[out] none
|
\retval none
|
*/
|
void usart_hardware_flow_rts_config(uint32_t usart_periph, uint32_t rtsconfig)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_RTSEN);
|
USART_CTL2(usart_periph) |= rtsconfig;
|
}
|
|
/*!
|
\brief configure hardware flow control CTS
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] ctsconfig: enable or disable CTS
|
only one parameter can be selected which is shown as below:
|
\arg USART_CTS_ENABLE: enable CTS
|
\arg USART_CTS_DISABLE: disable CTS
|
\param[out] none
|
\retval none
|
*/
|
void usart_hardware_flow_cts_config(uint32_t usart_periph, uint32_t ctsconfig)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~USART_CTL2_CTSEN;
|
USART_CTL2(usart_periph) |= ctsconfig;
|
}
|
|
/*!
|
\brief configure hardware flow control coherence mode
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] hcm:
|
only one parameter can be selected which is shown as below:
|
\arg USART_HCM_NONE: nRTS signal equals to the rxne status register
|
\arg USART_HCM_EN: nRTS signal is set when the last data bit has been sampled
|
\param[out] none
|
\retval none
|
*/
|
void usart_hardware_flow_coherence_config(uint32_t usart_periph, uint32_t hcm)
|
{
|
USART_CHC(usart_periph) &= ~(USART_CHC_HCM);
|
USART_CHC(usart_periph) |= (USART_CHC_HCM & hcm);
|
}
|
|
/*!
|
\brief enable RS485 driver
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_rs485_driver_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) |= USART_CTL2_DEM;
|
}
|
|
/*!
|
\brief disable RS485 driver
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_rs485_driver_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_DEM);
|
}
|
|
/*!
|
\brief configure driver enable assertion time
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] deatime: 0x00000000-0x0000001F
|
\param[out] none
|
\retval none
|
*/
|
void usart_driver_assertime_config(uint32_t usart_periph, uint32_t deatime)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_DEA);
|
USART_CTL0(usart_periph) |= (USART_CTL0_DEA & ((deatime) << 21));
|
}
|
|
/*!
|
\brief configure driver enable de-assertion time
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] dedtime: 0x00000000-0x0000001F
|
\param[out] none
|
\retval none
|
*/
|
void usart_driver_deassertime_config(uint32_t usart_periph, uint32_t dedtime)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_DED);
|
USART_CTL0(usart_periph) |= (USART_CTL0_DED & ((dedtime) << 16));
|
}
|
|
/*!
|
\brief configure driver enable polarity mode
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] dep: DE signal
|
only one parameter can be selected which is shown as below:
|
\arg USART_DEP_HIGH: DE signal is active high
|
\arg USART_DEP_LOW: DE signal is active low
|
\param[out] none
|
\retval none
|
*/
|
void usart_depolarity_config(uint32_t usart_periph, uint32_t dep)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
/* reset DEP bit */
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_DEP);
|
USART_CTL2(usart_periph) |= (USART_CTL2_DEP & dep);
|
}
|
|
/*!
|
\brief configure USART DMA reception
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] dmacmd: enable or disable DMA for reception
|
only one parameter can be selected which is shown as below:
|
\arg USART_DENR_ENABLE: DMA enable for reception
|
\arg USART_DENR_DISABLE: DMA disable for reception
|
\param[out] none
|
\retval none
|
*/
|
void usart_dma_receive_config(uint32_t usart_periph, uint32_t dmacmd)
|
{
|
USART_CTL2(usart_periph) &= ~USART_CTL2_DENR;
|
/* configure DMA reception */
|
USART_CTL2(usart_periph) |= dmacmd;
|
}
|
|
/*!
|
\brief configure USART DMA transmission
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] dmacmd: enable or disable DMA for transmission
|
only one parameter can be selected which is shown as below:
|
\arg USART_DENT_ENABLE: DMA enable for transmission
|
\arg USART_DENT_DISABLE: DMA disable for transmission
|
\param[out] none
|
\retval none
|
*/
|
void usart_dma_transmit_config(uint32_t usart_periph, uint32_t dmacmd)
|
{
|
USART_CTL2(usart_periph) &= ~USART_CTL2_DENT;
|
/* configure DMA transmission */
|
USART_CTL2(usart_periph) |= dmacmd;
|
}
|
|
/*!
|
\brief disable DMA on reception error
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_reception_error_dma_disable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) |= USART_CTL2_DDRE;
|
}
|
|
/*!
|
\brief enable DMA on reception error
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_reception_error_dma_enable(uint32_t usart_periph)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_DDRE);
|
}
|
|
/*!
|
\brief enable USART to wakeup the mcu from deep-sleep mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_wakeup_enable(uint32_t usart_periph)
|
{
|
USART_CTL0(usart_periph) |= USART_CTL0_UESM;
|
}
|
|
/*!
|
\brief disable USART to wakeup the mcu from deep-sleep mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[out] none
|
\retval none
|
*/
|
void usart_wakeup_disable(uint32_t usart_periph)
|
{
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UESM);
|
}
|
|
/*!
|
\brief configure the USART wakeup mode from deep-sleep mode
|
\param[in] usart_periph: USARTx(x=0)
|
\param[in] wum: wakeup mode
|
only one parameter can be selected which is shown as below:
|
\arg USART_WUM_ADDR: WUF active on address match
|
\arg USART_WUM_STARTB: WUF active on start bit
|
\arg USART_WUM_RBNE: WUF active on RBNE
|
\param[out] none
|
\retval none
|
*/
|
void usart_wakeup_mode_config(uint32_t usart_periph, uint32_t wum)
|
{
|
/* disable USART */
|
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
|
/* reset WUM bit */
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_WUM);
|
USART_CTL2(usart_periph) |= USART_CTL2_WUM & (wum);
|
}
|
|
/*!
|
\brief enable receive FIFO
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_receive_fifo_enable(uint32_t usart_periph)
|
{
|
USART_RFCS(usart_periph) |= USART_RFCS_RFEN;
|
}
|
|
/*!
|
\brief disable receive FIFO
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval none
|
*/
|
void usart_receive_fifo_disable(uint32_t usart_periph)
|
{
|
USART_RFCS(usart_periph) &= ~(USART_RFCS_RFEN);
|
}
|
|
/*!
|
\brief read receive FIFO counter number
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[out] none
|
\retval receive FIFO counter number
|
*/
|
uint8_t usart_receive_fifo_counter_number(uint32_t usart_periph)
|
{
|
return (uint8_t)(GET_BITS(USART_RFCS(usart_periph), 12U, 14U));
|
}
|
|
/*!
|
\brief get flag in STAT/CHC/RFCS register
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] flag: flag type
|
only one parameter can be selected which is shown as below:
|
\arg USART_FLAG_PERR: parity error flag
|
\arg USART_FLAG_FERR: frame error flag
|
\arg USART_FLAG_NERR: noise error flag
|
\arg USART_FLAG_ORERR: overrun error
|
\arg USART_FLAG_IDLE: idle line detected flag
|
\arg USART_FLAG_RBNE: read data buffer not empty
|
\arg USART_FLAG_TC: transmission completed
|
\arg USART_FLAG_TBE: transmit data register empty
|
\arg USART_FLAG_LBD: LIN break detected flag
|
\arg USART_FLAG_CTSF: CTS change flag
|
\arg USART_FLAG_CTS: CTS level
|
\arg USART_FLAG_RT: receiver timeout flag
|
\arg USART_FLAG_EB: end of block flag
|
\arg USART_FLAG_ABDE: auto baudrate detection error
|
\arg USART_FLAG_ABD: auto baudrate detection flag
|
\arg USART_FLAG_BSY: busy flag
|
\arg USART_FLAG_AM: address match flag
|
\arg USART_FLAG_SB: send break flag
|
\arg USART_FLAG_RWU: receiver wakeup from mute mode.
|
\arg USART_FLAG_WU: wakeup from deep-sleep mode flag
|
\arg USART_FLAG_TEA: transmit enable acknowledge flag
|
\arg USART_FLAG_REA: receive enable acknowledge flag
|
\arg USART_FLAG_EPERR: early parity error flag
|
\arg USART_FLAG_RFE: receive FIFO empty flag
|
\arg USART_FLAG_RFF: receive FIFO full flag
|
\arg USART_FLAG_RFFINT: receive FIFO full interrupt flag
|
\param[out] none
|
\retval FlagStatus: SET or RESET
|
*/
|
FlagStatus usart_flag_get(uint32_t usart_periph, usart_flag_enum flag)
|
{
|
if(RESET != (USART_REG_VAL(usart_periph, flag) & BIT(USART_BIT_POS(flag)))){
|
return SET;
|
}else{
|
return RESET;
|
}
|
}
|
|
/*!
|
\brief clear USART status
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] flag: flag type
|
only one parameter can be selected which is shown as below:
|
\arg USART_FLAG_PERR: parity error flag
|
\arg USART_FLAG_FERR: frame error flag
|
\arg USART_FLAG_NERR: noise detected flag
|
\arg USART_FLAG_ORERR: overrun error flag
|
\arg USART_FLAG_IDLE: idle line detected flag
|
\arg USART_FLAG_TC: transmission complete flag
|
\arg USART_FLAG_LBD: LIN break detected flag
|
\arg USART_FLAG_CTSF: CTS change flag
|
\arg USART_FLAG_RT: receiver timeout flag
|
\arg USART_FLAG_EB: end of block flag
|
\arg USART_FLAG_AM: address match flag
|
\arg USART_FLAG_WU: wakeup from deep-sleep mode flag
|
\arg USART_FLAG_EPERR: early parity error flag
|
\param[out] none
|
\retval none
|
*/
|
void usart_flag_clear(uint32_t usart_periph, usart_flag_enum flag)
|
{
|
USART_INTC(usart_periph) |= BIT(USART_BIT_POS(flag));
|
}
|
|
/*!
|
\brief enable USART interrupt
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] inttype: interrupt type
|
only one parameter can be selected which is shown as below:
|
\arg USART_INT_IDLE: idle interrupt
|
\arg USART_INT_RBNE: read data buffer not empty interrupt and
|
overrun error interrupt enable interrupt
|
\arg USART_INT_TC: transmission complete interrupt
|
\arg USART_INT_TBE: transmit data register empty interrupt
|
\arg USART_INT_PERR: parity error interrupt
|
\arg USART_INT_AM: address match interrupt
|
\arg USART_INT_RT: receiver timeout interrupt
|
\arg USART_INT_EB: end of block interrupt
|
\arg USART_INT_LBD: LIN break detection interrupt
|
\arg USART_INT_ERR: error interrupt enable in multibuffer communication
|
\arg USART_INT_CTS: CTS interrupt
|
\arg USART_INT_WU: wakeup from deep-sleep mode interrupt
|
\arg USART_INT_RFF: receive FIFO full interrupt enable
|
\param[out] none
|
\retval none
|
*/
|
void usart_interrupt_enable(uint32_t usart_periph, usart_interrupt_enum inttype)
|
{
|
USART_REG_VAL(usart_periph, inttype) |= BIT(USART_BIT_POS(inttype));
|
}
|
|
/*!
|
\brief disable USART interrupt
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] inttype: interrupt type
|
only one parameter can be selected which is shown as below:
|
\arg USART_INT_IDLE: idle interrupt
|
\arg USART_INT_RBNE: read data buffer not empty interrupt and
|
overrun error interrupt
|
\arg USART_INT_TC: transmission complete interrupt
|
\arg USART_INT_TBE: transmit data register empty interrupt
|
\arg USART_INT_PERR: parity error interrupt
|
\arg USART_INT_AM: address match interrupt
|
\arg USART_INT_RT: receiver timeout interrupt
|
\arg USART_INT_EB: end of block interrupt
|
\arg USART_INT_LBD: LIN break detection interrupt
|
\arg USART_INT_ERR: error interrupt enable in multibuffer communication
|
\arg USART_INT_CTS: CTS interrupt
|
\arg USART_INT_WU: wakeup from deep-sleep mode interrupt
|
\arg USART_INT_RFF: receive FIFO full interrupt enable
|
\param[out] none
|
\retval none
|
*/
|
void usart_interrupt_disable(uint32_t usart_periph, usart_interrupt_enum inttype)
|
{
|
USART_REG_VAL(usart_periph, inttype) &= ~BIT(USART_BIT_POS(inttype));
|
}
|
|
/*!
|
\brief enable USART command
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] cmdtype: command type
|
only one parameter can be selected which is shown as below:
|
\arg USART_CMD_ABDCMD: auto baudrate detection command
|
\arg USART_CMD_SBKCMD: send break command
|
\arg USART_CMD_MMCMD: mute mode command
|
\arg USART_CMD_RXFCMD: receive data flush command
|
\arg USART_CMD_TXFCMD: transmit data flush request
|
\param[out] none
|
\retval none
|
*/
|
void usart_command_enable(uint32_t usart_periph, uint32_t cmdtype)
|
{
|
USART_CMD(usart_periph) |= (cmdtype);
|
}
|
|
/*!
|
\brief get USART interrupt and flag status
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] int_flag: interrupt and flag type, refer to usart_interrupt_flag_enum
|
only one parameter can be selected which is shown as below:
|
\arg USART_INT_FLAG_EB: end of block interrupt and flag
|
\arg USART_INT_FLAG_RT: receiver timeout interrupt and flag
|
\arg USART_INT_FLAG_AM: address match interrupt and flag
|
\arg USART_INT_FLAG_PERR: parity error interrupt and flag
|
\arg USART_INT_FLAG_TBE: transmitter buffer empty interrupt and flag
|
\arg USART_INT_FLAG_TC: transmission complete interrupt and flag
|
\arg USART_INT_FLAG_RBNE: read data buffer not empty interrupt and flag
|
\arg USART_INT_FLAG_RBNE_ORERR: read data buffer not empty interrupt and overrun error flag
|
\arg USART_INT_FLAG_IDLE: IDLE line detected interrupt and flag
|
\arg USART_INT_FLAG_LBD: LIN break detected interrupt and flag
|
\arg USART_INT_FLAG_WU: wakeup from deep-sleep mode interrupt and flag
|
\arg USART_INT_FLAG_CTS: CTS interrupt and flag
|
\arg USART_INT_FLAG_ERR_NERR: error interrupt and noise error flag
|
\arg USART_INT_FLAG_ERR_ORERR: error interrupt and overrun error
|
\arg USART_INT_FLAG_ERR_FERR: error interrupt and frame error flag
|
\arg USART_INT_FLAG_RFF: receive FIFO full interrupt and flag
|
\param[out] none
|
\retval FlagStatus: SET or RESET
|
*/
|
FlagStatus usart_interrupt_flag_get(uint32_t usart_periph, usart_interrupt_flag_enum int_flag)
|
{
|
uint32_t intenable = 0U, flagstatus = 0U;
|
/* get the interrupt enable bit status */
|
intenable = (USART_REG_VAL(usart_periph, int_flag) & BIT(USART_BIT_POS(int_flag)));
|
/* get the corresponding flag bit status */
|
flagstatus = (USART_REG_VAL2(usart_periph, int_flag) & BIT(USART_BIT_POS2(int_flag)));
|
|
if(flagstatus && intenable){
|
return SET;
|
}else{
|
return RESET;
|
}
|
}
|
|
/*!
|
\brief clear USART interrupt flag
|
\param[in] usart_periph: USARTx(x=0,1)
|
\param[in] flag: USART interrupt flag
|
only one parameter can be selected which is shown as below:
|
\arg USART_INT_FLAG_PERR: parity error flag
|
\arg USART_INT_FLAG_ERR_FERR: frame error flag
|
\arg USART_INT_FLAG_ERR_NERR: noise detected flag
|
\arg USART_INT_FLAG_RBNE_ORERR: read data buffer not empty interrupt and overrun error flag
|
\arg USART_INT_FLAG_ERR_ORERR: error interrupt and overrun error
|
\arg USART_INT_FLAG_IDLE: idle line detected flag
|
\arg USART_INT_FLAG_TC: transmission complete flag
|
\arg USART_INT_FLAG_LBD: LIN break detected flag
|
\arg USART_INT_FLAG_CTS: CTS change flag
|
\arg USART_INT_FLAG_RT: receiver timeout flag
|
\arg USART_INT_FLAG_EB: end of block flag
|
\arg USART_INT_FLAG_AM: address match flag
|
\arg USART_INT_FLAG_WU: wakeup from deep-sleep mode flag
|
\arg USART_INT_FLAG_RFF: receive FIFO full interrupt and flag
|
\param[out] none
|
\retval none
|
*/
|
void usart_interrupt_flag_clear(uint32_t usart_periph, usart_interrupt_flag_enum flag)
|
{
|
if(USART_INT_FLAG_RFF == flag){
|
USART_RFCS(usart_periph) &= (uint32_t)(~USART_RFCS_RFFINT);
|
}else{
|
USART_INTC(usart_periph) |= BIT(USART_BIT_POS2(flag));
|
}
|
}
|
