LED won't blink (Timer with PWM)

[firassaabd]

Hi could somebody please help me with this: i am a beginner ,i have set the Timer_init and Gpio_init with bare Metal 
i'm working in STM32F429ZIT and i'm aiming to control GPIO pins PG13 and PG14 using the PWM channels with two channel each for every LED 
but the LEDs on PG13 and PG14 aren’t blinking
i debugged the Leds, they are working correctly but when it comes to use PWM nothing appears 
here's the code :

 

#include "stm32f4xx.h"

void GPIO_Config(void);
void TIM_Config(void);

int main(void)
{
GPIO_Config();
TIM_Config();

while (1)
{

}
}

void GPIO_Config(void)
{
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOGEN;

GPIOG->MODER &= ~((0x3 << (13 * 2)) | (0x3 << (14 * 2)));
GPIOG->MODER |= ((0x1 << (13 * 2)) | (0x1 << (14 * 2)));

GPIOG->AFR[1] |= ((0x2 << (4 * (13 - 8))) | (0x2 << (4 * (14 - 8))));
}

void TIM_Config(void)
{
RCC->APB1ENR |= RCC_APB1ENR_TIM4EN;

TIM4->PSC = 8400 - 1;
TIM4->ARR = 1000 - 1;

TIM4->CCMR1 |= (0x6 << 4);
TIM4->CCMR1 |= (1 << 3);
TIM4->CCER |= TIM_CCER_CC1E;
TIM4->CCR1 = 300;

TIM4->CCMR1 |= (0x6 << 12);
TIM4->CCMR1 |= (1 << 11);
TIM4->CCER |= TIM_CCER_CC2E;
TIM4->CCR2 = 700;

TIM4->CR1 |= TIM_CR1_CEN;
}

 

 

[waclawek.jan]

PG13 and PG14 are not TIM4_CH1 and TIM4_CH2.

 

JW

[Andrew Neil]

Welcome to the forum.

Please see the Posting Tips for how to properly post source code:

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

 

---

@firassaabd wrote:

 i am a beginner

---

Just a beginner with STM32, or a beginner with microcontrollers in general? Or with programming in general?

 

---

@firassaabd wrote:

i have set the Timer_init and Gpio_init with bare Metal 

---

Seems a bit advanced to start with.

Before doing that, have you got an LED blinking using just simple loop delays?

Have you tried configuring this with CubeMX - even if only to get a known-working point of reference?