My projects are acting weirdly, same code works on other solutions

PlatformIO Core
1

Hello.
I recently moved to PlatformIO, because my main code editor is Vim.

My code is:

#include <stm32l0xx.h>
#include <stm32l0xx_hal.h>
#include <stm32l0xx_hal_gpio.h>

int main(void)
{
HAL_Init();

__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();

GPIO_InitTypeDef gpio;
gpio.Pin = GPIO_PIN_5;
gpio.Mode = GPIO_MODE_OUTPUT_PP;
gpio.Pull = GPIO_NOPULL;
gpio.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &gpio);

gpio.Pin = GPIO_PIN_13; // konfigurujemy pin 13
gpio.Mode = GPIO_MODE_INPUT; // jako wejście
gpio.Pull = GPIO_PULLUP; // włączamy rezystor podciągający
HAL_GPIO_Init(GPIOC, &gpio); // port GPIOC

while (1)
{
if (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_RESET) { // jesli przycisk jest przycisniety,
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET); // zapal diode
} else {
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);
}
}
}

which is meant to light the LED on board after pressing a button.
Yet… after uploading it with PlatformIO Led lights we acting weirdly, I have to press two buttons at once.
I tried the same code on OpenSTM32, and it works just fine.
My board is Nucleo L073RZ if it helps.
Also, my platformio.ini:

[env:nucleo_l073rz]
platform = ststm32
board = nucleo_l073rz
framework = stm32cube

I’m under Arch Linux.

2

You’re forgetting to initialize the .Alternate member here, maybe initialize it to 0?

Which two buttons do you have to press?

You are also setting the speed a GPIO_SPEED_FREQ_LOW but if the button has bouncing, it might change very rapidly. You might want a software debounce here, too.

There, a different version of the STM32 HAL library may be used. According to the Release_Notes.html file for the L0 HAL provided by PIO, it was released 26-October-2018.

1 Like