tail_light_stm8/usr/src/hw_init.c

#include "stm8s.h"

void HW_Init(void)
{
  //时钟设置
  CLK_DeInit();                        
  CLK_HSICmd(ENABLE); //配置内部高速时钟  
  CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1); //内核1分频
  CLK_SYSCLKConfig(CLK_PRESCALER_HSIDIV8); //时钟8分频

  //GPIO
  GPIO_DeInit(GPIOD);
  GPIO_Init(GPIOD, GPIO_PIN_4, GPIO_MODE_IN_FL_IT); //PD4 KEY
  EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOD, EXTI_SENSITIVITY_FALL_ONLY);
  GPIO_DeInit(GPIOC);
  GPIO_Init(GPIOC, GPIO_PIN_3, GPIO_MODE_IN_PU_IT); //PC3 INT2
  EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOC, EXTI_SENSITIVITY_FALL_ONLY);
  GPIO_Init(GPIOC, GPIO_PIN_7, GPIO_MODE_IN_PU_IT); //PC7 INT7
  EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOC, EXTI_SENSITIVITY_FALL_ONLY);
  GPIO_DeInit(GPIOB);
  GPIO_Init(GPIOB, GPIO_PIN_4, GPIO_MODE_OUT_OD_HIZ_FAST); //SCL
  GPIO_Init(GPIOB, GPIO_PIN_5, GPIO_MODE_OUT_OD_HIZ_FAST); //SDA
  
  //TIM4
  TIM4_DeInit();
  TIM4_TimeBaseInit(TIM4_PRESCALER_8, 255); //1ms
  TIM4_ClearFlag(TIM4_FLAG_UPDATE);
  TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
  TIM4_Cmd(ENABLE);
  
  //TIM1
  TIM1_DeInit();
  TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, 999, 0);
  TIM1_OC1Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_DISABLE,
               800, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_RESET,
               TIM1_OCNIDLESTATE_SET);  //PWM1模式，输出使能，不互补，占空比800， 输出极性高，空闲低电平
  TIM1_Cmd(ENABLE);
  
  //TIM2
  TIM2_DeInit();
  TIM2_TimeBaseInit(TIM2_PRESCALER_1, 999);
  TIM2_OC1Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE, 200, TIM2_OCPOLARITY_LOW);
  TIM2_OC1PreloadConfig(ENABLE);
  TIM2_OC2Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE, 200, TIM2_OCPOLARITY_LOW);
  TIM2_OC2PreloadConfig(ENABLE);       
  TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE, 200, TIM2_OCPOLARITY_LOW);
  TIM2_OC3PreloadConfig(ENABLE);
  TIM2_ARRPreloadConfig(ENABLE);
  TIM2_Cmd(ENABLE);
  
  //ADC
  GPIO_Init(GPIOD, GPIO_PIN_5, GPIO_MODE_IN_FL_NO_IT); //Light_in,ch5
  GPIO_Init(GPIOD, GPIO_PIN_6, GPIO_MODE_IN_FL_NO_IT); //Vin,ch6
  GPIO_Init(GPIOC, GPIO_PIN_4, GPIO_MODE_IN_FL_NO_IT); //Chg_in,ch2
  ADC1_DeInit();
  ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_2, ADC1_PRESSEL_FCPU_D2, \
            ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL5,\
            DISABLE);
  ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_5, ADC1_PRESSEL_FCPU_D2, \
            ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL5,\
            DISABLE);
  ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_6, ADC1_PRESSEL_FCPU_D2, \
            ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL6,\
            DISABLE);
  ADC1_ITConfig(ADC1_IT_AWS2, ENABLE);
  ADC1_ITConfig(ADC1_IT_AWS5, ENABLE);
  ADC1_ITConfig(ADC1_IT_AWS6, ENABLE);

  /* Enable general interrupts */  
  enableInterrupts();
}