can't set tim1 PWM of stm8

e_m_inem · ‎2011-05-17

Posted on May 17, 2011 at 10:56

I would like to check pwm signal but it don't find any signal help me please

#include ''stm8s.h''

void main(void)

{

CLK->SWR = 0xB4 ;

while((CLK->SWCR&0x08) == 0){};

CLK->SWCR&=0xF7;

CLK->SWCR |= 0x02 ;

CLK->CMSR = 0xB4 ;

//CLK->ECKR |= CLK_ECKR_HSEEN ;

//CLK->ICKR = 0x03 ;

CLK->CKDIVR = 0x00 ;

CLK->PCKENR1 = 0x80 ;

CLK->PCKENR2 = 0x08 ;

CLK->CCOR = 0x33 ;

TIM1->CR1 = 0x80 ;

TIM1->CR2 = 0x10 ;

TIM1->ARRH = 0x0a ; //(Fclk/Fs)(16M/10K=1.6K)

TIM1->ARRL = 0x40 ;

TIM1->PSCRH = 0x00 ; // clk = 16M/(0+1)

TIM1->PSCRL = 0x00 ;

TIM1->IER = 0x00 ;

TIM1->BKR = 0x00 ;

TIM1->SR1 = 0x1b ;

TIM1->CCER1 = 0x05 ;

TIM1->CCER2 = 0x3f ;

TIM1->CCMR1 = 0x38 ;

TIM1->CCMR2 = 0xfa ;

TIM1->CCR1H = 0x05; // compare 800

TIM1->CCR1L= 0x20 ; // compare 800

GPIOC->DDR = 0x0f;

GPIOC->CR1 = 0x0f;

GPIOC->CR2 = 0x00;

while (1){

GPIOC->ODR = 0x0f; // 0000 1111

}

lowpowermcu · ‎2011-05-17

Posted on May 17, 2011 at 13:11

First of all check that you STM8S device embedds Timer 1. You should find it in the datasheet.