Posted on May 17, 2016 at 17:30Hello am working with the timer1 input capture of an STM8S103F3. No input is registered by the input capture module though I fed it with square waves from 10Hz all the way up to 1MHz. The same square wave registers properly in the input capture module of a pic micro. I have seen that the PC6 (TIM1 Channnel1) pin is set to TIM1 channel1 as an alternate function but I have not found anything helpful in the STM8S standard development library. I have pasted my code below in case anyone can help thanks:
#include ''stm8s.h''
void main()
{
CLK_DeInit();
CLK_HSICmd(ENABLE);
CLK_LSICmd(DISABLE);
CLK_HSECmd(DISABLE);
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1);
GPIO_Init(GPIOC, GPIO_PIN_4, GPIO_MODE_IN_FL_NO_IT);
CLK_CCOConfig(CLK_OUTPUT_CPUDIV32);
CLK_CCOCmd(ENABLE);
GPIO_Init(GPIOC,GPIO_PIN_6,GPIO_MODE_IN_PU_NO_IT);
TIM1_DeInit();
CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1 , ENABLE);
TIM1_ICInit( TIM1_CHANNEL_1, TIM1_ICPOLARITY_RISING,TIM1_ICSELECTION_DIRECTTI,TIM1_ICPSC_DIV1, 0x00);
TIM1_SelectInputTrigger(TIM1_TS_TI1FP1);
TIM1_SelectSlaveMode(TIM1_SLAVEMODE_RESET);
TIM1_ITConfig(TIM1_IT_CC1,ENABLE);
TIM1_GenerateEvent(TIM1_EVENTSOURCE_CC1);
TIM1_ClearFlag(TIM1_FLAG_CC1);
TIM1_UpdateRequestConfig(TIM1_UPDATESOURCE_REGULAR);
TIM1_Cmd(ENABLE);
enableInterrupts();
while (1);
}
/***********Contents of stm8s_it.c*********************/
uint16_t Capture;
uint8_t Buf[10];
INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12)
{
if(TIM1_GetITStatus(TIM1_IT_CC1)==SET)
{
Capture=TIM1_GetCapture1();
TIM1_ClearFlag(TIM1_IT_CC1);
}
}
