ARM-定时器-定时器函数封装配置
注意事项：GD32中TIMER7是高级定时器，相关详细请参考上一篇文章。
main.c
//main.c#include \"gd32f4xx.h\"#include \"systick.h\"#include #include \"main.h\"#include \"Usart0.h\"#include \"Timer.h\"float duty0 = 0;float duty1 = 0;float duty2 = 0;void Usart0_on_recv(uint8_t* data, uint32_t len) { printf(\"recv: %s\\r\\n\", data);if(data[0] == 0x00) { // T2 ch0 +Timer7_ch0_update(duty0++);} else if(data[0] == 0x01) { // T2 ch0 -Timer7_ch0_update(duty0--);} else if(data[0] == 0x02) { // T2 ch1 + Timer7_ch1_update(duty1++);} else if(data[0] == 0x03) { // T2 ch1 -Timer7_ch1_update(duty1--);} else if(data[0] == 0x04) { // T2 ch2 +Timer7_ch2_update(duty2++);} else if(data[0] == 0x05) { // T2 ch2 -Timer7_ch2_update(duty2--);}}int main(void){ systick_config(); Usart0_init();Timer_init(); while(1) { }}关心的内容
该代码中，data[0] == 0x00等等是用来检查通过 USART0 (串口0) 接收到的数据的第一个字节是否为0x00。这个data数组是通过Usart0_on_recv函数的参数传入的，而这个函数看起来是一个串口接收回调函数。
Timer7.c
//Timer7.c#include \"Timer7.h\"#if USE_TIMER_7void Timer7_init() {// T7 ch0 ch1 ch2 ch3// PC6 PC7 PC8//哪个定时器uint32_t timer_rcu = RCU_TIMER7;uint32_t timer = TIMER7;//uint32_t timer_rcu_psc = RCU_TIMER_PSC_MUL4;// 倍频//定时器周期和分频uint32_t timer_param_psc = TIMER7_PSC;uint32_t timer_param_period = TIMER7_PERIOD;/******************** GPIO *********************************/// // PC6 PC7 PC8//////////// ch0#if TIMER7_CH0_ENABLE// P和N#if TIMER7_CH0_P_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH0_P_PORT_RCU);gpio_mode_set(TIMER7_CH0_P_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH0_P_PIN);gpio_output_options_set(TIMER7_CH0_P_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH0_P_PIN);gpio_af_set(TIMER7_CH0_P_PORT, TIMER7_CH0_P_AF, TIMER7_CH0_P_PIN);#endif#if TIMER7_CH0_N_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH0_N_PORT_RCU);gpio_mode_set(TIMER7_CH0_N_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH0_N_PIN);gpio_output_options_set(TIMER7_CH0_N_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH0_N_PIN);gpio_af_set(TIMER7_CH0_N_PORT, TIMER7_CH0_N_AF, TIMER7_CH0_N_PIN);#endif#endif//////////// ch1#if TIMER7_CH1_ENABLE// P和N#if TIMER7_CH1_P_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH1_P_PORT_RCU);gpio_mode_set(TIMER7_CH1_P_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH1_P_PIN);gpio_output_options_set(TIMER7_CH1_P_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH1_P_PIN);gpio_af_set(TIMER7_CH1_P_PORT, TIMER7_CH1_P_AF, TIMER7_CH1_P_PIN);#endif#if TIMER7_CH1_N_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH1_N_PORT_RCU);gpio_mode_set(TIMER7_CH1_N_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH1_N_PIN);gpio_output_options_set(TIMER7_CH1_N_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH1_N_PIN);gpio_af_set(TIMER7_CH1_N_PORT, TIMER7_CH1_N_AF, TIMER7_CH1_N_PIN);#endif#endif//////////// ch2#if TIMER7_CH2_ENABLE// P和N#if TIMER7_CH2_P_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH2_P_PORT_RCU);gpio_mode_set(TIMER7_CH2_P_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH2_P_PIN);gpio_output_options_set(TIMER7_CH2_P_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH2_P_PIN);gpio_af_set(TIMER7_CH2_P_PORT, TIMER7_CH2_P_AF, TIMER7_CH2_P_PIN);#endif#if TIMER7_CH2_N_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH2_N_PORT_RCU);gpio_mode_set(TIMER7_CH2_N_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH2_N_PIN);gpio_output_options_set(TIMER7_CH2_N_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH2_N_PIN);gpio_af_set(TIMER7_CH2_N_PORT, TIMER7_CH2_N_AF, TIMER7_CH2_N_PIN);#endif#endif//////////// ch3#if TIMER7_CH3_ENABLE// P和N#if TIMER7_CH3_P_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH3_P_PORT_RCU);gpio_mode_set(TIMER7_CH3_P_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH3_P_PIN);gpio_output_options_set(TIMER7_CH3_P_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH3_P_PIN);gpio_af_set(TIMER7_CH3_P_PORT, TIMER7_CH3_P_AF, TIMER7_CH3_P_PIN);#endif#if TIMER7_CH3_N_ENABLE// gpio初始化 ch0rcu_periph_clock_enable(TIMER7_CH3_N_PORT_RCU);gpio_mode_set(TIMER7_CH3_N_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, TIMER7_CH3_N_PIN);gpio_output_options_set(TIMER7_CH3_N_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_MAX, TIMER7_CH3_N_PIN);gpio_af_set(TIMER7_CH3_N_PORT, TIMER7_CH3_N_AF, TIMER7_CH3_N_PIN);#endif#endif/************************ timer ************************/// 初始化定时器相关配置rcu_periph_clock_enable(timer_rcu);timer_deinit(timer);timer_parameter_struct tps;timer_struct_para_init(&tps);//配置默认值// 根据实际需求去修改值tps.prescaler = timer_param_psc;tps.period = timer_param_period; // 周期计数（从0开始计数）timer_init(timer, &tps);/*************** timer CH 配置 **********************/timer_oc_parameter_struct tops;// 定时器通道配置 CH0//////////////// ch0#if TIMER7_CH0_ENABLEtimer_channel_output_struct_para_init(&tops);// N和P#if TIMER7_CH0_P_ENABLEtops.outputstate = TIMER_CCX_ENABLE;tops.ocpolarity = TIMER_OC_POLARITY_HIGH;#endif#if TIMER7_CH0_N_ENABLEtops.outputnstate = TIMER_CCXN_ENABLE;tops.ocnpolarity = TIMER_OCN_POLARITY_HIGH;#endiftimer_channel_output_config(timer, TIMER_CH_0 , &tops);timer_channel_output_mode_config(timer, TIMER_CH_0, TIMER_OC_MODE_PWM0);timer_channel_output_pulse_value_config(timer, TIMER_CH_0, 0);//pwm值#endif//////////////////////////////////////////#if TIMER7_CH1_ENABLE// 定时器通道配置 CH1timer_channel_output_struct_para_init(&tops);// N和P#if TIMER7_CH1_P_ENABLEtops.outputstate = TIMER_CCX_ENABLE;#endif#if TIMER7_CH1_N_ENABLEtops.outputnstate = TIMER_CCXN_ENABLE;#endiftimer_channel_output_config(timer, TIMER_CH_1 , &tops);timer_channel_output_mode_config(timer, TIMER_CH_1, TIMER_OC_MODE_PWM0);timer_channel_output_pulse_value_config(timer, TIMER_CH_1, 0);//pwm值#endif#if TIMER7_CH2_ENABLE// 定时器通道配置 CH2timer_channel_output_struct_para_init(&tops);// N和P#if TIMER7_CH2_P_ENABLEtops.outputstate = TIMER_CCX_ENABLE;#endif#if TIMER7_CH2_N_ENABLEtops.outputnstate = TIMER_CCXN_ENABLE;#endiftimer_channel_output_config(timer, TIMER_CH_2 , &tops);timer_channel_output_mode_config(timer, TIMER_CH_2, TIMER_OC_MODE_PWM0);timer_channel_output_pulse_value_config(timer, TIMER_CH_2, 0);//pwm值#endif#if TIMER7_CH3_ENABLEtimer_channel_output_struct_para_init(&tops);#if TIMER7_CH3_P_ENABLEtops.outputstate = TIMER_CCX_ENABLE;#endif#if TIMER7_CH3_N_ENABLEtops.outputnstate = TIMER_CCXN_ENABLE;#endiftimer_channel_output_config(timer, TIMER_CH_3 , &tops);timer_channel_output_mode_config(timer, TIMER_CH_3, TIMER_OC_MODE_PWM0);timer_channel_output_pulse_value_config(timer, TIMER_CH_3, 0);//pwm值#endif//只针对高级定时器，break，保护电路，打开break电路timer_break_parameter_struct tbps;timer_break_struct_para_init(&tbps); tbps.breakpolarity = TIMER_BREAK_POLARITY_HIGH; tbps.outputautostate = TIMER_OUTAUTO_ENABLE; tbps.breakstate = TIMER_BREAK_ENABLE;timer_break_config(timer, &tbps);timer_break_enable(timer);timer_enable(timer);}#if TIMER7_CH0_ENABLEvoid Timer7_ch0_update(float duty){uint32_t timer = TIMER7;if(duty > 100) duty = 100;if(duty 100) duty = 100;if(duty 100) duty = 100;if(duty 100) duty = 100;if(duty < 0) duty = 0;uint32_t count = TIMER7_PERIOD + 1;uint32_t pulse = count * duty / 100 - 1;//计数值timer_channel_output_pulse_value_config(timer, TIMER_CH_3, pulse);//pwm值}#endif#endif关心的内容
TIMER7高级定时器，四通道
这里的引脚分为P和N类型，不同引脚要配置不同的输出状态
所以封装过程中需要分类
P、N配置
Timer7.h
//Timer7.h#ifndef __TIMER_7_H__#define __TIMER_7_H__#include \"Timer_config.h\"#if USE_TIMER_7// 1. 基本timer，有中断函数// 2. timer, 控制多个通道的duty变化// 3. timer, 控制周期频率动态变化// 4. ARM中有很多timervoid Timer7_init();#if TIMER7_CH0_ENABLEvoid Timer7_ch0_update(float duty);#endif#if TIMER7_CH1_ENABLEvoid Timer7_ch1_update(float duty);#endif#if TIMER7_CH2_ENABLEvoid Timer7_ch2_update(float duty);#endif#if TIMER7_CH3_ENABLEvoid Timer7_ch3_update(float duty);#endif#endif#endifTimer_config.h
//Timer_config.h#ifndef __TIMER_CONFIG_H__#define __TIMER_CONFIG_H__#include \"gd32f4xx.h\"#include \"systick.h\"#define USE_TIMER_0 0#define USE_TIMER_1 0#define USE_TIMER_2 0#define USE_TIMER_3 0#define USE_TIMER_4 0#define USE_TIMER_5 0#define USE_TIMER_6 0#define USE_TIMER_7 1#define USE_TIMER_8 0#define USE_TIMER_9 0#define USE_TIMER_10 0#define USE_TIMER_11 0#define USE_TIMER_12 0#define USE_TIMER_13 0/*************** Timer 0 *************//*************** Timer 1 *************//*************** Timer 2 *************/#if USE_TIMER_2// 0: output1: base timer2: input#define TIMER2_FUNC0#if TIMER2_FUNC == 0#define TIMER2_CH0_ENABLE 1#define TIMER2_CH1_ENABLE 1#define TIMER2_CH2_ENABLE 1#define TIMER2_CH3_ENABLE 0#endif/*** TIMER2_PSC(10 - 1)* TIMER2_PERIOD(SystemCoreClock / 10000 - 1)* 表示10秒执行10000次*/#define TIMER2_PSC(1 - 1)#define TIMER2_PERIOD(SystemCoreClock / 10000 - 1)#if TIMER2_CH0_ENABLE// PA6(AF2),PB4(AF2),PC6(AF2)#define TIMER2_CH0_PORT_RCURCU_GPIOC#define TIMER2_CH0_PORTGPIOC#define TIMER2_CH0_PINGPIO_PIN_6#define TIMER2_CH0_AFGPIO_AF_2#endif#if TIMER2_CH1_ENABLE//PA7,PB5,PC7#define TIMER2_CH1_PORT_RCURCU_GPIOC#define TIMER2_CH1_PORTGPIOC#define TIMER2_CH1_PINGPIO_PIN_7#define TIMER2_CH1_AFGPIO_AF_2#endif#if TIMER2_CH2_ENABLE//PB0,PC8#define TIMER2_CH2_PORT_RCURCU_GPIOC#define TIMER2_CH2_PORTGPIOC#define TIMER2_CH2_PINGPIO_PIN_8#define TIMER2_CH2_AFGPIO_AF_2#endif#if TIMER2_CH3_ENABLE//PB1,PC9#define TIMER2_CH3_PORT_RCURCU_GPIOC#define TIMER2_CH3_PORTGPIOC#define TIMER2_CH3_PINGPIO_PIN_6#define TIMER2_CH3_AFGPIO_AF_2#endif#endif/***************************************//*************** Timer 7 **************//**************************************/#if USE_TIMER_7// 0: output1: base timer2: input#define TIMER7_FUNC0#if TIMER7_FUNC == 0#define TIMER7_CH0_ENABLE 1#define TIMER7_CH1_ENABLE 1#define TIMER7_CH2_ENABLE 1#define TIMER7_CH3_ENABLE 0#endif#if TIMER7_CH0_ENABLE#define TIMER7_CH0_P_ENABLE 1#define TIMER7_CH0_N_ENABLE 1#endif#if TIMER7_CH1_ENABLE#define TIMER7_CH1_P_ENABLE 0#define TIMER7_CH1_N_ENABLE 1#endif#if TIMER7_CH2_ENABLE#define TIMER7_CH2_P_ENABLE 0#define TIMER7_CH2_N_ENABLE 1#endif#if TIMER7_CH3_ENABLE#define TIMER7_CH3_P_ENABLE 0#define TIMER7_CH3_N_ENABLE 1#endif/*** TIMER2_PSC(10 - 1)* TIMER2_PERIOD(SystemCoreClock / 10000 - 1)* 表示10秒执行10000次*/#define TIMER7_PSC(1 - 1)#define TIMER7_PERIOD(SystemCoreClock / 10000 - 1)//////////////// ch0#if TIMER7_CH0_P_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH0_P_PORT_RCURCU_GPIOC#define TIMER7_CH0_P_PORTGPIOC#define TIMER7_CH0_P_PINGPIO_PIN_6#define TIMER7_CH0_P_AFGPIO_AF_3#endif#if TIMER7_CH0_N_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH0_N_PORT_RCURCU_GPIOA#define TIMER7_CH0_N_PORTGPIOA#define TIMER7_CH0_N_PINGPIO_PIN_5#define TIMER7_CH0_N_AFGPIO_AF_3#endif////////////////////////////////////////////////////////// ch1#if TIMER7_CH1_P_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH1_P_PORT_RCURCU_GPIOC#define TIMER7_CH1_P_PORTGPIOC#define TIMER7_CH1_P_PINGPIO_PIN_6#define TIMER7_CH1_P_AFGPIO_AF_3#endif#if TIMER7_CH1_N_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH1_N_PORT_RCURCU_GPIOA#define TIMER7_CH1_N_PORTGPIOA#define TIMER7_CH1_N_PINGPIO_PIN_7#define TIMER7_CH1_N_AFGPIO_AF_3#endif////////////////////////////////////////////////////////// ch2#if TIMER7_CH2_P_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH2_P_PORT_RCURCU_GPIOC#define TIMER7_CH2_P_PORTGPIOC#define TIMER7_CH2_P_PINGPIO_PIN_6#define TIMER7_CH2_P_AFGPIO_AF_3#endif#if TIMER7_CH2_N_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH2_N_PORT_RCURCU_GPIOA#define TIMER7_CH2_N_PORTGPIOA#define TIMER7_CH2_N_PINGPIO_PIN_7#define TIMER7_CH2_N_AFGPIO_AF_3#endif////////////////////////////////////////////////////////// ch3#if TIMER7_CH3_P_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH3_P_PORT_RCURCU_GPIOC#define TIMER7_CH3_P_PORTGPIOC#define TIMER7_CH3_P_PINGPIO_PIN_6#define TIMER7_CH3_P_AFGPIO_AF_3#endif#if TIMER7_CH3_N_ENABLE// PA7(AF3),PB4(AF2),PC6(AF2)#define TIMER7_CH3_N_PORT_RCURCU_GPIOA#define TIMER7_CH3_N_PORTGPIOA#define TIMER7_CH3_N_PINGPIO_PIN_7#define TIMER7_CH3_N_AFGPIO_AF_3#endif//////////////////////////////////////////#endif/*********************************************************/#endif以上是以高级定时器TIMER7和通用定时器TIMER2为例封装配置，可参考此流程封装配置GD32F4其余剩下的12个定时器。
