【东软载波ESF0654 PDS开发板活动】高级定时器（AD16C4T0）

#include "bsp_pwm.h"

timer_handle_t pwm_tim;

timer_clock_config_t pwm_tim_clock;

timer_oc_init_t tim_ocinit;



void pwm_init()

{

  gpio_init_t GPIO_InitStructure;

        /* Initialize tim0 ch1 pin */

        GPIO_InitStructure.mode = GPIO_MODE_OUTPUT;

        GPIO_InitStructure.odos = GPIO_PUSH_PULL;

        GPIO_InitStructure.pupd = GPIO_PUSH_UP;

        GPIO_InitStructure.odrv = GPIO_OUT_DRIVE_NORMAL;

        GPIO_InitStructure.flt  = GPIO_FILTER_DISABLE;

        GPIO_InitStructure.type = GPIO_TYPE_TTL;

        GPIO_InitStructure.func = GPIO_FUNC_2;  

        ald_gpio_init(TIMER0_CHANNEL_PORT, TIMER0_CHANNEL1_PIN, &GPIO_InitStructure);

   ald_gpio_init(TIMER0_CHANNEL_PORT, TIMER0_CHANNEL2_PIN, &GPIO_InitStructure);

   ald_gpio_init(TIMER0_CHANNEL_PORT, TIMER0_CHANNEL3_PIN, &GPIO_InitStructure);

   ald_gpio_init(TIMER0_CHANNEL_PORT, TIMER0_CHANNEL4_PIN, &GPIO_InitStructure);



        pwm_tim.perh              = AD16C4T0;

        pwm_tim.init.prescaler    = pwm_psc;

        pwm_tim.init.period       = pwm_arr;

        pwm_tim.init.mode         = TIMER_CNT_MODE_UP;

        pwm_tim.init.clk_div      = TIMER_CLOCK_DIV1;

        pwm_tim.init.re_cnt       = 0;

        ald_timer_pwm_init(&pwm_tim);

        

        /* Initialize clock source */

        pwm_tim_clock.source = TIMER_SRC_INTER;

        ald_timer_config_clock_source(&pwm_tim, &pwm_tim_clock);



/* Common configuration for all channels */

tim_ocinit.oc_mode      = TIMER_OC_MODE_PWM1;

  tim_ocinit.oc_polarity  = TIMER_OC_POLARITY_HIGH;

  tim_ocinit.oc_fast_en   = DISABLE;

  tim_ocinit.ocn_polarity = TIMER_OCN_POLARITY_HIGH;

  tim_ocinit.ocn_idle     = TIMER_OCN_IDLE_RESET;

  tim_ocinit.oc_idle      = TIMER_OC_IDLE_RESET;

    

  /* Set the pulse value for channel 1 */

  tim_ocinit.pulse = PULSE1_VALUE;

        ald_timer_oc_config_channel(&pwm_tim, &tim_ocinit, TIMER_CHANNEL_1);   

  /* Set the pulse value for channel 2 */

  tim_ocinit.pulse = PULSE2_VALUE;

        ald_timer_oc_config_channel(&pwm_tim, &tim_ocinit, TIMER_CHANNEL_2);   

  /* Set the pulse value for channel 3 */

  tim_ocinit.pulse = PULSE3_VALUE;

        ald_timer_oc_config_channel(&pwm_tim, &tim_ocinit, TIMER_CHANNEL_3);  

  /* Set the pulse value for channel 4 */

  tim_ocinit.pulse = PULSE4_VALUE;

        ald_timer_oc_config_channel(&pwm_tim, &tim_ocinit, TIMER_CHANNEL_4);

        /* Start input pwm from tim0 channel 1 */

        ald_timer_oc_start(&pwm_tim, TIMER_CHANNEL_1);  

  /* Start input pwm from tim0 channel 2 */

        ald_timer_oc_start(&pwm_tim, TIMER_CHANNEL_2);

  /* Start input pwm from tim0 channel 3 */

        ald_timer_oc_start(&pwm_tim, TIMER_CHANNEL_3);  

  /* Start input pwm from tim0 channel 4 */

        ald_timer_oc_start(&pwm_tim, TIMER_CHANNEL_4);

}





#ifndef __BSP_PWM_H__

#define __BSP_PWM_H__

#include "ald_timer.h"

#include "ald_gpio.h"

#define  pwm_psc             0  

#define  pwm_arr            (uint32_t)(700 - 1)  /* Period Value  */

#define  PULSE1_VALUE       (uint32_t)(pwm_arr/2)        /* Capture Compare 1 Value  */

#define  PULSE2_VALUE       (uint32_t)(pwm_arr*37.5/100) /* Capture Compare 2 Value  */

#define  PULSE3_VALUE       (uint32_t)(pwm_arr/4)        /* Capture Compare 3 Value  */

#define  PULSE4_VALUE       (uint32_t)(pwm_arr*12.5/100) /* Capture Compare 4 Value  */



#define TIMER0_CHANNEL_PORT GPIOA

#define TIMER0_CHANNEL1_PIN GPIO_PIN_8

#define TIMER0_CHANNEL2_PIN GPIO_PIN_9

#define TIMER0_CHANNEL3_PIN GPIO_PIN_10

#define TIMER0_CHANNEL4_PIN GPIO_PIN_11

void pwm_init(void);

#endif

#include "main.h"

int main()

{

        //初始化ALD

        ald_cmu_init();     

        //初始化系统时钟

        ald_cmu_pll1_config(CMU_PLL1_INPUT_HRC_6, CMU_PLL1_OUTPUT_48M);

        ald_cmu_clock_config(CMU_CLOCK_PLL1,48000000);

        led_module_init();   //LED初始化

        bsp_key_init();      //按键初始化

        adc_module_init();   //ADC模块初始化

  //tim0_pin_init();   //定时器初始化

 

        pwm_init();          //pwm初始化

        while (1) 

        { 

        }

}