【ST NUCLEO-U575ZI-Q 测评 】GPIOG端口点灯问题

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【ST NUCLEO-U575ZI-Q 测评 】GPIOG端口点灯问题 [复制链接]

有网友在问为什么PG2点不亮，这是介绍下,因为PG2使用VDDIO2需要单独配置其VDDIO2电源.

 

 

 

需要先使能VDDIO2,注意在PWR配置前需要先使能PWR时钟。

LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_PWR);

HAL_PWREx_EnableVddIO2();

HAL_PWREx_ConfigSupply(PWR_SMPS_SUPPLY);

先要PWR的SVMCR,bit29置位使能VDDIO2

 

 

然后PWR的CR3的bit1,选择VDDIO2的来源

 

PWR的SVMSR的bit1回读确认是否选择成功。

 

 

 

原理图中VDDIO2来源于SB28->VDD_MCU->JP5->VDD，确认该链路OK。

 

 

 

 

其他的就和其他端口一样了，注意使能对应端口的时钟。

#include "stm32u575xx.h"

#include "stm32u5xx_ll_gpio.h"

#include "stm32u5xx_ll_bus.h"

 

void SysTick_Handler(void)

{

static volatile uint32_t num = 0;

if(num++ >= 1000)

{

LL_GPIO_TogglePin(GPIOB, 1u<<7);

LL_GPIO_TogglePin(GPIOG, 1u<<2);

LL_GPIO_TogglePin(GPIOC, 1u<<7);

num=0;

}

HAL_IncTick();

}

 

 

void delay(uint32_t t)

{

volatile uint32_t timeout = t;

while(t--);

}

 

int main(void)

{

HAL_Init();

LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_PWR);

HAL_PWREx_EnableVddIO2();

HAL_PWREx_ConfigSupply(PWR_SMPS_SUPPLY);

#if 1

LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_PWR);

HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);

 

RCC_OscInitTypeDef pRCC_OscInitStruct;

pRCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

pRCC_OscInitStruct.HSIState = RCC_HSI_ON;

pRCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

pRCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;

pRCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

pRCC_OscInitStruct.PLL.PLLM = 1;

pRCC_OscInitStruct.PLL.PLLMBOOST = RCC_PLLMBOOST_DIV1;

pRCC_OscInitStruct.PLL.PLLN = 20;

pRCC_OscInitStruct.PLL.PLLP = 1;

pRCC_OscInitStruct.PLL.PLLQ = 1;

pRCC_OscInitStruct.PLL.PLLR = 2;

pRCC_OscInitStruct.PLL.PLLRGE = RCC_PLLVCIRANGE_0;

pRCC_OscInitStruct.PLL.PLLFRACN = 0;  /* */

HAL_RCC_OscConfig(&pRCC_OscInitStruct);

 

RCC_ClkInitTypeDef pRCC_ClkInitStruct;

pRCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;

pRCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

pRCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

pRCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;

pRCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

pRCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV2;

HAL_RCC_ClockConfig(&pRCC_ClkInitStruct, FLASH_LATENCY_4);

#endif

 

LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);

LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOG);

LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOC);

 

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);

 

GPIO_InitStruct.Pin = LL_GPIO_PIN_2;

GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;

GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_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(GPIOG, &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(GPIOC, &GPIO_InitStruct);

 

 

while(1)

{

///delay(1000000ul);

///LL_GPIO_TogglePin(GPIOB, 1u<<7);

}

}

 

okhxyyo

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