[ST NUCLEO-U575ZI-Q Review] GPIO-lighting using HAL/LL library

qinyunti

[ST NUCLEO-U575ZI-Q Review] GPIO-lighting using HAL/LL library [Copy link]

Preface

We have built a development environment before. This article starts with the simplest GPIO lighting to experience the operation of HAL and LL libraries.

process

GPIO

Reference Manual, "13 General-purpose I/Os (GPIO)"

Pinout

From the schematic diagram, we can see that pins PG2 and PB7 correspond to LED3 and LED2, and the output high lights up the LED.

HAL/LL library

stm32u5xx_hal_gpio.c/h

stm32u5xx_ll_gpio.c/h

Macros need to be defined in projects using the HAL library

USE_HAL_DRIVER

Macros need to be defined in projects using the LL library

USE_FULL_LL_DRIVER

stm32u5xx_hal_conf.h

#define HAL_GPIO_MODULE_ENABLED The macro definition will include

Corresponding header file

#ifdef HAL_GPIO_MODULE_ENABLED

#include "stm32u5xx_hal_gpio.h"

#endif /* HAL_GPIO_MODULE_ENABLED */

The code of stm32u5xx_hal_gpio.c will compile

The HAL library only needs to include the total header file #include "stm32u575xx.h";

The LL library needs to include the corresponding module header file #include "stm32u5xx_ll_gpio.h".

GPIO Operation

The LL library is used here.

First, enable the corresponding clock and include the header file #include "stm32u5xx_ll_bus.h"

LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);

We can see the operation interface such as LL library from the corresponding header file

ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx);

ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct);

void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct);

The total code is as follows

#include "stm32u575xx.h"

#include "stm32u5xx_ll_gpio.h"

#include "stm32u5xx_ll_bus.h"

void delay(uint32_t t)

{

volatile uint32_t timeout = t;

while(t--);

}

int main(void)

{

LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);

LL_GPIO_InitTypeDef GPIO_InitStruct;

//LL_GPIO_StructInit(&GPIO_InitStruct);

GPIO_InitStruct.Pin = LL_GPIO_PIN_7;

GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;

GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;

GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;

GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;

GPIO_InitStruct.Alternate = LL_GPIO_AF_0;

LL_GPIO_Init(GPIOB, &GPIO_InitStruct);

while(1)

{

delay(1000000ul);

LL_GPIO_TogglePin(GPIOB, 1u<<7);

}

}

After downloading the simulation, Yunxin can see the blue LED start to flash and can check the corresponding register of GPIO

Summarize

Thanks to the perfect library, operating peripherals is very simple and efficient, which STM does very well. It should be noted that the corresponding peripheral clock must be enabled before using the peripheral.

lugl4313820

Why can't I turn on the PG2 light? Do I need any special configuration?

damiaa

lugl4313820 posted on 2022-12-14 22:28 Why can't I turn on the PG2 light? Do I need special configuration?

He only ordered pb7 here

lugl4313820

damiaa posted on 2022-12-15 10:04 He only clicked pb7 here

Yeah.

qinyunti

lugl4313820 posted on 2022-12-14 22:28 Why can't I turn on the PG2 light? Do I need special configuration?

[ST NUCLEO-U575ZI-Q Review] PGIOG port lighting problem - stm32/stm8 - Electronic Engineering World - Forum (eeworld.com.cn)

VDDIO2 needs to be configured

qinyunti

damiaa posted on 2022-12-15 10:04 He only clicked pb7 here

See also

[ST NUCLEO-U575ZI-Q Review] PGIOG port lighting problem - stm32/stm8 - Electronic Engineering World - Forum (eeworld.com.cn)

starcat123

Thanks, I learned

The problem of lighting up the lamp forever, I found that it was very difficult to modify the routine and port the FreeRTOS small program

Finally, I found that the GPIO MODE, PULLUP, and PULLDOWN in CubeMX were not configured properly.

hhhhcccc

I'm studying recently, the tutorial is very good, I can say that I'm very attentive

okhxyyo

Review summary: Free application | ST NUCLEO-U575ZI-Q https://en.eeworld.com/bbs/thread-1228653-1-1.html