STM32F429-disc1 GPIO_IOToggle test (How can I modify GPIO pin

[Carter Lee]

Posted on September 05, 2017 at 18:43

Hi.

I've done set up the \STM32F4xx_DSP_StdPeriph_Lib_V1.8.0 with keil and  think the flash download works good.

So I'm trying to implement GPIO_IOToggle test with 

STM32F4xx_DSP_StdPeriph_Lib_V1.8.0's

template project 

After compile, there is no error and I've uploaded to flash my firmware.

But LED does not work. I think there are some mismatch between STM32F429-disc1 kit and 

STM32F4xx_DSP_StdPeriph_Lib_V1.8.0's GPIO declaration.

STM32F429-disc1 ki  have just 2 leds  and it's connected PG13 and PG14. but there is no PG13 and PG14.

 main code is the following.

the original code is

int main(void)

{

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);

GPIO_InitStructure.GPIO_Pin = LED1_PIN | LED2_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOG, &GPIO_InitStructure); while (1) { /* Set PG6 and PG8 */ GPIOG->BSRRL = LED1_PIN | LED2_PIN; /* Reset PG6 and PG8 */ GPIOG->BSRRH = LED1_PIN | LED2_PIN;

and I modify such as the below.

int main(void)

{

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);

GPIO_InitStructure.GPIO_Pin = LED13_PIN | LED14_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOG, &GPIO_InitStructure); while (1) {

GPIOG->BSRRL = LED13_PIN | LED14_PIN;

GPIOG->BSRRH = LED13_PIN | LED14_PIN;

}

I just want to test of blink in 

GPIO_IOToggle example project.

Can I use ''stm32f4xx_gpio.c'' of ''STM32F4xx_StdPeriph_Driver'' for blink test to PG13 and PG14?

How to connect between PG13, PG14  and ''

stm32f4xx_gpio.c'' of ''

STM32F4xx_StdPeriph_Driver''?

Would you please help me what am I supposed to do?

#stm32f429-discovery #gpio

[Tesla DeLorean · Accepted solution]

Posted on September 05, 2017 at 18:51

What's the issue with the second piece of code, you don't specify

This might have a higher probability of working

void delay(void)

{  volatile int i;  for(i=0; i<10000000; i++);}

int main(void)

{RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;GPIO_Init(GPIOG, &GPIO_InitStructure);

while (1)

{GPIOG->BSRRL = GPIO_Pin_13 | GPIO_Pin_14;delay();GPIOG->BSRRH = GPIO_Pin_13 | GPIO_Pin_14;delay();}

[Carter Lee]

Posted on September 06, 2017 at 10:24

Hi Clive, Thanks

Your instruction works very well..

void delay(void)

{ volatile int i; for(i=0; i<10000000; i++);} int main(void){RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;GPIO_Init(GPIOG, &GPIO_InitStructure); while (1){GPIOG->BSRRL = GPIO_Pin_13 | GPIO_Pin_14;delay();GPIOG->BSRRH = GPIO_Pin_13 | GPIO_Pin_14;delay();}}