Posted on May 14, 2017 at 21:52Hello,
I want to create program that:
1. Measure time
2. Start one conversion of ADC
3. After conversion show it on LCD (it's optional, but it would be great if it works)
The 2nd point is problematic. I want to realize all on interrupts and my program doesn't jump into adc int handling.
Here is a ADC configuration:
void ADC_Periph_Init(void)
{
CLK->PCKENR2|=0x01; //adc clock en
ADC1->CR1|=0x01; //adc ADON
ADC1->SQR[0]|=0x81; //select channel 24, DMA disable for single conversion
GPIOF->DDR&=0xFE;
GPIOF->CR1&=0xFE;
GPIOF->CR2&=0xFE; //gpio for adc configutation for PF0
ADC1->CR1|=0x68; //resolution, single conversion, enable interrupt end of conversion
ADC1->CR2&=0x78; //sample time, PRESC=0
ADC1->CR3=0x1F; //sample time
ADC1->CR1&=0xFE;
}
Here is TIM4 int
INTERRUPT_HANDLER(TIM4_UPD_OVF_TRG_IRQHandler, 25)
{
TIM4->SR1&=0xFE; //clear flag from ovf
if(((GPIOC->ODR&0x80)>>7)==0x01){
GPIOC->ODR&=0x7F;
}
else{
GPIOC->ODR|=0x80;
}
if((GPIOA->IDR&0x08)==0x08)licznik2++;
else licznik2=0;
if ((licznik2==10)&&(~ADC_start_conv)){
ADC1->CR1|=0x01;
ADC_start_conv=TRUE;
for(i=0;i>16000;i++)
ADC1->CR1|=0x02;
}
TIM4->CNTR=0xFF-488;
return;
}
generally ADC->CR1|=0x01 is done when switch is on for a period of time.
I use IAR.
Where is the fault and how it should look properly?
