#include "pwm.h"
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#include "interrupt_interface.h"
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#include "stm8s_tim1.h"
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#include "stm8s_tim2.h"
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#define CCR1_Val ((uint16_t)800)
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#define CCR2_Val ((uint16_t)250)
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#define CCR3_Val ((uint16_t)125)
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static void timer2_interrupt(void)
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{
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TIM2_ClearFlag(TIM2_FLAG_CC1);
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TIM2_ClearFlag(TIM2_FLAG_CC2);
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TIM2_ClearFlag(TIM2_FLAG_CC3);
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}
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/**
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* @brief Configure TIM1 to generate 6 Steps PWM signal
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* @param None
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* @retval None
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*/
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static void TIM1_Config(void)
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{
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/* TIM1 Peripheral Configuration */
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TIM1_DeInit();
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TIM1_InternalClockConfig();
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/* Time Base configuration */
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/*
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TIM1_Period = 1023
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TIM1_Prescaler = 0
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TIM1_CounterMode = TIM1_COUNTERMODE_UP
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TIM1_RepetitionCounter = 0
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*/
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TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, 999, 0); //fCK_CNT = fCK_PSC / (PSCR[15:0] + 1) =16M/1=16M fpwm=16M/(999+1)=16k
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/*
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TIM1_OCMode = TIM1_OCMODE_PWM2
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TIM1_OutputState = TIM1_OUTPUTSTATE_ENABLE
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TIM1_OutputNState = TIM1_OUTPUTNSTATE_ENABLE
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TIM1_Pulse = CCR1_Val
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TIM1_OCPolarity = TIM1_OCPOLARITY_LOW
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TIM1_OCNPolarity = TIM1_OCNPOLARITY_HIGH
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TIM1_OCIdleState = TIM1_OCIDLESTATE_SET
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TIM1_OCNIdleState = TIM1_OCIDLESTATE_RESET
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*/
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//110：PWM模式1－ 在向上计数时，一旦TIM1_CNT<TIM1_CCR1时通道1为有效电平
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TIM1_OC1Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
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CCR1_Val, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_RESET,
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TIM1_OCNIDLESTATE_SET);
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/*TIM1_Pulse = CCR2_Val*/
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TIM1_OC2Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
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CCR2_Val, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_RESET,
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TIM1_OCNIDLESTATE_SET);
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/*TIM1_Pulse = CCR3_Val*/
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TIM1_OC3Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
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CCR3_Val, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_RESET,
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TIM1_OCNIDLESTATE_SET);
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// /* Automatic Output enable, Break, dead time and lock configuration*/
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TIM1_BDTRConfig(TIM1_OSSISTATE_ENABLE, TIM1_LOCKLEVEL_OFF, 10, TIM1_BREAK_DISABLE,
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TIM1_BREAKPOLARITY_LOW, TIM1_AUTOMATICOUTPUT_ENABLE);
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/* TIM1 counter enable */
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TIM1_Cmd(ENABLE);
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}
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/**
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* @brief Configure TIM1 to generate 6 Steps PWM signal
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* @param None
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* @retval None
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*/
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static void TIM2_Config(void)
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{
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/* TIM2 Peripheral Configuration */
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TIM2_DeInit();
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TIM2_ICInit(TIM2_CHANNEL_1, TIM2_ICPOLARITY_FALLING, TIM2_ICSELECTION_DIRECTTI,
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TIM2_ICPSC_DIV1, 0x0);
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TIM2_ICInit(TIM2_CHANNEL_2, TIM2_ICPOLARITY_FALLING, TIM2_ICSELECTION_DIRECTTI,
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TIM2_ICPSC_DIV1, 0x0);
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TIM2_ICInit(TIM2_CHANNEL_3, TIM2_ICPOLARITY_FALLING, TIM2_ICSELECTION_DIRECTTI,
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TIM2_ICPSC_DIV1, 0x0);
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/* Clear CC1 Flag*/
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TIM2_ClearFlag(TIM2_FLAG_CC1);
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TIM2_ClearFlag(TIM2_FLAG_CC2);
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TIM2_ClearFlag(TIM2_FLAG_CC3);
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TIM2_ITConfig(TIM2_IT_CC1, ENABLE);
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TIM2_ITConfig(TIM2_IT_CC2, ENABLE);
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TIM2_ITConfig(TIM2_IT_CC3, ENABLE);
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/* TIM1 counter enable */
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TIM2_Cmd(ENABLE);
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}
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extern void PWM_Config(void)
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{
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TIM1_Config();
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/* Main Output Enable */
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TIM1_CtrlPWMOutputs(ENABLE);
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// TIM1_SetCompare1(0);
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TIM2_Config();
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RegInterruptFunc(timer2_interrupt, 2);
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}
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extern void PWM_SetDuty1(unsigned int value)
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{
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TIM1_SetCompare1(value);
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}
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extern void PWM_SetDuty2(unsigned int value)
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{
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TIM1_SetCompare2(value);
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}
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extern void PWM_SetDuty3(unsigned int value)
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{
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TIM1_SetCompare3(value);
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}
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