天和机器人音量调节说明文档

#define VOLUME_CHANGE(x){
    X9C102_CS_GPIO_PORT->ODR &= ~X9C102_CS_PIN;
    if(x)
	X9C102_UD_GPIO_PORT->ODR &= ~X9C102_UD_PIN;
    else
	X9C102_UD_GPIO_PORT->ODR |= X9C102_UD_PIN;
    DELAY_US(100);
    for(int i=0;i<10;i++){
	X9C102_INC_GPIO_PORT->ODR |= X9C102_INC_PIN;
	DELAY_US(10);
	X9C102_INC_GPIO_PORT->ODR &= ~X9C102_INC_PIN;
	DELAY_US(10);
    }
    X9C102_CS_GPIO_PORT->ODR |= X9C102_CS_PIN;
}

#define VOLUME_UP() VOLUME_CHANGE(1);
#define VOLUME_DOWN() VOLUME_CHANGE(0);

{
if(volume){
    if(volume>0){
	VOLUME_UP();
    }else{
	VOLUME_DOWN();
    }
    volume = 0;
}
}

#define CYCLE 10
static uint16_t pgCount = 0;
static uint8_t pgReady = 0;
int8_t volume = 0;
int8_t outB = 0;
/**
  * @brief Timer1 Update/Overflow/Trigger/Break Interrupt routine.
  * @param  None
  * @retval None
  */
INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11)
{
  /* In order to detect unexpected events during development,
     it is recommended to set a breakpoint on the following instruction.
  */
    TIM1_ClearITPendingBit(TIM1_IT_UPDATE);
    if(pgbPort->IDR & pgbPin){
	outB = 1;
    }else{
	outB = 0;
    }
    if(pgPort->IDR & pgPin){
	if(pgCount<CYCLE)
	    pgCount++;
    }else{
	if(pgCount>0)
	    pgCount--;
    }
    if(pgCount == 0){
	pgReady = 1;
    }
    if(pgCount == CYCLE && pgReady){
	if(pgbPort->IDR & pgbPin)
	    volume = -1;
	else 
	    volume = 1;
	pgReady = 0;
    }
}