#include "uart.h"
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#include "gpio.h"
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#include "gd32e23x_usart.h"
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static Uart_DataPtrType Uart_DataPtr = {0xaa, 0xbb, 0, 0, 0, 0};
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/******************************************************************
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|Usart0
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|PB6-TX:复用推挽输出
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|PB7-RX：浮空输入
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******************************************************************/
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static void GPIO_Uart_Init(void)
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{
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rcu_periph_clock_enable(RCU_GPIOB);
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gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_6);
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gpio_mode_set(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO_PIN_7);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_6);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_7);
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}
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/******************************************************************
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|Usart0
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|PB6-TX
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|PB7-RX
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******************************************************************/
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void UartInit(void)
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{
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GPIO_Uart_Init();
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rcu_periph_clock_enable(RCU_USART0);
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usart_deinit(USART0);
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usart_baudrate_set(USART0, 9600);
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usart_parity_config(USART0, USART_PM_NONE);
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usart_word_length_set(USART0, USART_WL_8BIT);
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usart_stop_bit_set(USART0, USART_STB_1BIT);
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usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);
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usart_enable(USART0);
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usart_interrupt_enable(USART0, USART_INT_RBNE);
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nvic_irq_enable(USART0_IRQn, 0);
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}
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void USART0_IRQHandler()
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{
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unsigned short Rdat;
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Rdat = usart_data_receive(USART0);
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usart_data_transmit(USART0, Rdat);
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switch (Uart_DataPtr.R_Number)
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{
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case 0:
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{
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if (Rdat == Uart_DataPtr.HeadA)
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{
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Uart_DataPtr.R_Number = 1;
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}
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break;
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}
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case 1:
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{
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if (Rdat == Uart_DataPtr.HeadB)
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{
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Uart_DataPtr.R_Number = 2;
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}
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else
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{
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Uart_DataPtr.R_Number = 0;
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}
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break;
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}
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case 2:
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{
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Uart_DataPtr.R_SpeedH = Rdat;
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Uart_DataPtr.R_Number = 3;
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break;
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}
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case 3:
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{
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Uart_DataPtr.R_SpeedL = Rdat;
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Uart_DataPtr.R_Number = 0;
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break;
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}
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default:
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break;
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}
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}
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