I am using STM8S001J3 for PWM at TIMER 1 channel 4(PC4) PIN NO 7,but not getting pwm..pls.suggest.

[Pravin kumar]

void PWM(void)//timer1 channel4

{

TIM1_ARRH = 0x03;    // Reload counter = 960

TIM1_ARRL = 0xc0;

TIM1_PSCRH|= 0;     // Prescalar = 0 (i.e. 1)

TIM1_PSCRL |= 0;

//TIM1_CR1 = 0;    // Up counter.

TIM1_CR1|= 0;    // Edge aligned counter.

TIM1_RCR |= 0;      // No repetition.

//

// Now configure Timer 1, channel 4.

//

TIM1_CCMR4|= 0X80;  // Set up to use PWM mode 2.

TIM1_CCER2|= 0X10;  // Output is enabled.

TIM1_CCER2|= 0X20;  // Active is defined as high.

TIM1_CCR4H|= 0x01;   // 480 = 50% duty cycle (based on TIM1_ARR).

TIM1_CCR4L|= 0xe0;

TIM1_BKR|= 0X80;//1;    // Enable the main output.

//

// Uncomment the following line to produce a single pulse.

 TIM1_CR1|=0x01;// Enable counter

}

[Cristian Gyorgy]

Hi!

With only the code you posted we cannot say much. Did you enable the clock for TIM1 in CLK_PCKEN register? Is the port output enabled?

Does your timer run? How are you debugging?

[prain · Accepted solution]

Compare your code with SPL library for your MCU. In SPL there are examples to test PWM.

[Pravin kumar]

Please share SPL libary for PWM on Timer 1 channel 4 for stm8s001j3

[Pravin kumar]

enable the clock for TIM1 in CLK_PCKEN register & Is the port output ;besic timer 4 is running at 4 ms interrupt.using stm8-so8-disco for debug.