Square Wave Generation on STM32F407

[Zaidii1122]

Hi,

I am a beginner and I want to generate a 50Hz square wave on STM32F407 on Keil UVision4
Please mention libraries etc that are being used and if you can how to add them to Keil UVision so it doesn't give an error.

 

[TDK]

Use the Example Selector in CubeMX to generate a PWM example project.

 

[Zaidii1122]

Hi , Thanks for this but i have to complete this on Keil Uvison 4 Software

[mƎALLEm]

Hello,

If you can't use CubeMX tool for code configuration/generation, you can also refer and inspire from the example provided in STM32CubeF4 under the path STM324xG_EVAL\Examples\TIM\TIM_PWMOutput

[mƎALLEm]

Hi @Zaidii1122 ,

As you are a beginner and if you don't want to use a timer but just GPIOs, you can simply toggle the pin you want at 20ms (1/50Hz) using: HAL_Delay(20). But this in not the way we recommend a such usage.

This is an example jhow to toggle the pin 5 on GPIOA:

/* -1- Enable GPIOA Clock (to be able to program the configuration registers) */
__HAL_RCC_GPIOA_CLK_ENABLE();

/* -2- Configure PA05 IO in output push-pull mode to
drive external LED */
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/* -3- Toggle PA05 IO in an infinite loop */
while (1)
{
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);

/* Insert delay 20 ms */
HAL_Delay(20);
}
}