huaqing/WMZ_2nd_STM32G474RET6_ADC_prcts
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huaqing
2026-02-24 00:55:10 +08:00
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155
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file adc.c
* @brief This file provides code for the configuration
* of the ADC instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "adc.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
ADC_HandleTypeDef hadc1;
/* ADC1 init function */
void MX_ADC1_Init(void)
{
/* USER CODE BEGIN ADC1_Init 0 */
/* USER CODE END ADC1_Init 0 */
ADC_MultiModeTypeDef multimode = {0};
ADC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN ADC1_Init 1 */
/* USER CODE END ADC1_Init 1 */
/** Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.GainCompensation = 0;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.DMAContinuousRequests = DISABLE;
hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc1.Init.OversamplingMode = DISABLE;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure the ADC multi-mode
*/
multimode.Mode = ADC_MODE_INDEPENDENT;
if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_1;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_24CYCLES_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC1_Init 2 */
/* USER CODE END ADC1_Init 2 */
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC12;
PeriphClkInit.Adc12ClockSelection = RCC_ADC12CLKSOURCE_SYSCLK;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* ADC1 clock enable */
__HAL_RCC_ADC12_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**ADC1 GPIO Configuration
PA0 ------> ADC1_IN1
*/
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN ADC1_MspInit 1 */
/* USER CODE END ADC1_MspInit 1 */
}
}
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspDeInit 0 */
/* USER CODE END ADC1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_ADC12_CLK_DISABLE();
/**ADC1 GPIO Configuration
PA0 ------> ADC1_IN1
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0);
/* USER CODE BEGIN ADC1_MspDeInit 1 */
/* USER CODE END ADC1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */

83
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file gpio.c
* @brief This file provides code for the configuration
* of all used GPIO pins.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "gpio.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/*----------------------------------------------------------------------------*/
/* Configure GPIO */
/*----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|CS_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOC, DC_Pin|RES_Pin|D1_Pin|D0_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : PC0 PC1 PC2 PC3 */
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pins : PB12 PB13 PB14 CS_Pin */
GPIO_InitStruct.Pin = GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|CS_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pins : DC_Pin RES_Pin D1_Pin D0_Pin */
GPIO_InitStruct.Pin = DC_Pin|RES_Pin|D1_Pin|D0_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
}
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */

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#include "main.h"
#include "usart.h"
#include "gpio.h"
#include "oled.h"
#include "led.h"
void led(unsigned char color, unsigned char number)
{
/*unsigned char transfer[5];
transfer[0] = 2;
transfer[1] = 0;*/
if (number==1)
{
switch (color)
{
case 0:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET); //B
showstring("1,0", 1 ,1);
break;
case 1:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET); //B
showstring("1,1", 1 ,1);
break;
case 2:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET); //B
showstring("1,2", 1 ,1);
break;
case 3:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_RESET); //B
showstring("1,3", 1 ,1);
break;
case 4 :
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET); //B
showstring("1,4", 1 ,1);
break;
case 5:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_RESET); //B
showstring("1,5", 1 ,1);
break;
case 6:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_RESET); //B
showstring("1,6", 1 ,1);
break;
case 7:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_RESET); //B
showstring("1,7", 1 ,1);
break;
default:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET); //B
showstring("1,default", 1 ,1);
}
}
/*else if (number==2)
{
switch (color)
{
case 0:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET); //R
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 1:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET); //R
transfer[0] = 2;
transfer[1] = 1;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 2:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET); //R
transfer[0] = 2;
transfer[1] = 2;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 3:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_RESET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET); //R
transfer[0] = 2;
transfer[1] = 3;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 4 :
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET); //R
transfer[0] = 2;
transfer[1] = 4;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 5:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_RESET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET); //R
transfer[0] = 2;
transfer[1] = 5;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 6:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_RESET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET); //R
transfer[0] = 2;
transfer[1] = 6;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
case 7:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_RESET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET); //R
transfer[0] = 2;
transfer[1] = 7;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
break;
default:
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET); //R
transfer[0] = 2;
transfer[1] = 9;
HAL_UART_Transmit(&huart1,transfer, 2 ,1000);
}
}
else
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET); //R
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET); //B
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET); //G
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET); //R
}
*/
/*transfer[0] = 2;
transfer[1] = 0;*/
}

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "usart.h"
#include "gpio.h"
#include "oled.h"
#include "readpin.h"
#include "led.h"
#include <stdint.h>
#include <stdio.h>
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_UART4_Init();
MX_USART1_UART_Init();
MX_ADC1_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
OLED_Init();
/* USER CODE BEGIN 2 */
uint8_t receive;
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET);
unsigned char trans[9];
trans[0]=0;
trans[0]=1;
trans[0]=2;
trans[0]=3;
trans[0]=4;
trans[0]=5;
trans[0]=6;
trans[0]=7;
trans[0]=8;
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */\
char result[30];
uint16_t adc_read;
while (1)
{
HAL_ADC_Start(&hadc1);
adc_read=HAL_ADC_GetValue(&hadc1);
led(ReadPin(), 1);
sprintf(result, "%d",adc_read);
showstring(result, 0,0);
HAL_Delay(200);
}
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV5;
RCC_OscInitStruct.PLL.PLLN = 68;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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#include "char.h"
#include "main.h"
#include <string.h>
#define u8 unsigned char;
#define u16 unsigned short int;
#define u32 unsigned int;
#define OLED_CS cs_Pin
#define OLED_RST RES_Pin
#define OLED_DC dc_Pin
#define OLED_SCL D0_Pin
#define OLED_SDA D1_Pin
unsigned char OLED_GRAM[128][8];
void OLED_WR_Byte(unsigned char dat,unsigned char cmd) ///////////////////////////////////////////1
{
unsigned char i;
if(cmd==0)
{
HAL_GPIO_WritePin(DC_GPIO_Port,DC_Pin,GPIO_PIN_RESET);
}
if(cmd==1)
{
HAL_GPIO_WritePin(DC_GPIO_Port,DC_Pin,GPIO_PIN_SET);
}
HAL_GPIO_WritePin(CS_GPIO_Port,CS_Pin,GPIO_PIN_RESET);
for(i=0;i<8;i++)
{
HAL_GPIO_WritePin(D0_GPIO_Port,D0_Pin,GPIO_PIN_RESET);
if(dat&0x80)
HAL_GPIO_WritePin(D1_GPIO_Port,D1_Pin,GPIO_PIN_SET);
else
HAL_GPIO_WritePin(D1_GPIO_Port,D1_Pin,GPIO_PIN_RESET);
HAL_GPIO_WritePin(D0_GPIO_Port,D0_Pin,GPIO_PIN_SET);
dat<<=1;
}
HAL_GPIO_WritePin(CS_GPIO_Port,CS_Pin,GPIO_PIN_SET);
HAL_GPIO_WritePin(DC_GPIO_Port,DC_Pin,GPIO_PIN_SET);
}
void OLED_Refresh_Gram(void) ///////////////////////////////////2
{
unsigned char i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,0); //设置页地址（0~7）
OLED_WR_Byte (0x00,0); //设置显示位置—列低地址
OLED_WR_Byte (0x10,0); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(OLED_GRAM[n][i],1);
}
}
void OLED_Set_Pos(unsigned char x, unsigned char y)
{
OLED_WR_Byte(0xb0+y,0);
OLED_WR_Byte(((x&0xf0)>>4)|0x10,0);
OLED_WR_Byte((x&0x0f)|0x01,0);
}
//开启OLED显示
void OLED_Display_On(void) ///////////////////////////////////3
{
OLED_WR_Byte(0X8D,0); //SET DCDC命令
OLED_WR_Byte(0X14,0); //DCDC ON
OLED_WR_Byte(0XAF,0); //DISPLAY ON
}
void OLED_DrawPoint(unsigned char x,unsigned char y,unsigned char t)
{
unsigned char pos,bx,temp=0;
if(x>127||y>63)return;//超出范围了.
pos=7-y/8;
bx=y%8;
temp=1<<(7-bx);
if(t)OLED_GRAM[x][pos]|=temp;
else OLED_GRAM[x][pos]&=~temp;
}
void OLED_Fill(unsigned char x1,unsigned char y1,unsigned char x2,unsigned char y2,unsigned char dot) ///////////////////////////4
{
unsigned char x,y;
for(x=x1;x<=x2;x++)
{
for(y=y1;y<=y2;y++)
{
OLED_DrawPoint(x,y,dot);
}
}
OLED_Refresh_Gram();//更新显示
}
void OLED_Clear(void) ////////////////////////////////////////////////////////////////////////////////5
{
unsigned char i,n;
for(i=0;i<8;i++)
{
for(n=0;n<128;n++)
{
OLED_GRAM[n][i]=0;
}
}
OLED_Refresh_Gram();//更新显示
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 12/16/24
void OLED_ShowChar(unsigned char x,unsigned char y,unsigned char chr,unsigned char ucWid,unsigned char mode) ///////////////////////////6
{
unsigned char temp,t,t1;
unsigned char y0=y;
unsigned char cucWid=(ucWid/8+((ucWid%8)?1:0))*(ucWid/2); //得到字体一个字符对应点阵集所占的字节数
chr=chr-' ';//得到偏移后的值
for(t=0;t<cucWid;t++)
{
if(ucWid==12)temp=ascii_1206[chr][t]; //调用1206字体
else if(ucWid==16)temp=ascii_1608[chr][t]; //调用1608字体
else if(ucWid==24)temp=ascii_2412[chr][t]; //调用2412字体
else return; //没有的字库
for(t1=0;t1<8;t1++)
{
if(temp&0x80)OLED_DrawPoint(x,y,mode);
else OLED_DrawPoint(x,y,!mode);
temp<<=1;
y++;
if((y-y0)==ucWid)
{
y=y0;
x++;
break;
}
}
}
}
////////////////////////////////////////////////////////////////////////////////
void OLED_ShowFontHZ(unsigned char x,unsigned char y,unsigned char pos,unsigned char size,unsigned char mode)
{
unsigned char temp,t,t1;
unsigned char y0=y;
unsigned char csize=(size/8+((size%8)?1:0))*(size);//得到字体一个字符对应点阵集所占的字节数
if(size!=12&&size!=16&&size!=24)return; //不支持的size
for(t=0;t<csize;t++)
{
if(size==12)temp=FontHzk[pos][t]; //调用1206字体
else if(size==16)temp=FontHzk[pos][t]; //调用1608字体
else if(size==24)temp=FontHzk[pos][t]; //调用2412字体
else return; //没有的字库
for(t1=0;t1<8;t1++)
{
if(temp&0x80)OLED_DrawPoint(x,y,mode);
else OLED_DrawPoint(x,y,!mode);
temp<<=1;
y++;
if((y-y0)==size)
{
y=y0;
x++;
break;
}
}
}
}
////////////////////////////////////////////
void showstring(char A[], unsigned char x ,unsigned char y) ///////////////////////////////////////////7
{
OLED_Clear();
int len,i=0;
unsigned a=1,b=1;
len=strlen(A);
a=x+a;
b=y+b;
while(i<len)
{
OLED_ShowChar(a,b,A[i],16,1);
a=a+9;
if((i>12)&&(((i-12)%13)==1))
{
a=1+x;
b=b+16;
}
i=i+1;
}
OLED_Refresh_Gram() ;
}
void plusstring(char A[], unsigned char x ,unsigned char y) ///////////////////////////////////////////8
{
int len,i=0;
unsigned a=1,b=1;
len=strlen(A);
a=x+a;
b=y+b;
while(i<len)
{
OLED_ShowChar(a,b,A[i],16,1);
a=a+9;
if((i>12)&&(((i-12)%13)==1))
{
a=1+x;
b=b+16;
}
i=i+1;
}
OLED_Refresh_Gram() ;
}
void roll_x_string(char A[], unsigned char x1 ,unsigned char y1, unsigned char x2) /////////////////////////////////9
{
if(x1>x2)
{
while((x1-x2)>10)
{
showstring(A,x1,y1);
x1=x1-10;
}
showstring(A,x2,y1);
}
else
{
while((x2-x1)>5)
{
showstring(A,x1,y1);
x1=x1+5;
}
showstring(A,x2,y1);
}
}
void roll_y_string(char A[], unsigned char x1 ,unsigned char y1, unsigned char y2) /////////////////////////////////10
{
if(y1>y2)
{
while(y1>y2)
{
showstring(A,x1,y1);
y1=y1-1;
}
}
else
{
while(y1<y2)
{
showstring(A,x1,y1);
y1=y1+1;
}
}
}
void OLED_Init() /////////////////////////////////12
{
HAL_GPIO_WritePin(RES_GPIO_Port,RES_Pin,GPIO_PIN_SET);
HAL_Delay(100);
HAL_GPIO_WritePin(RES_GPIO_Port,RES_Pin,GPIO_PIN_RESET);
HAL_Delay(100);
HAL_GPIO_WritePin(RES_GPIO_Port,RES_Pin,GPIO_PIN_SET);
OLED_WR_Byte(0xAE,0); //关闭显示
OLED_WR_Byte(0xD5,0); //设置时钟分频因子,震荡频率
OLED_WR_Byte(80,0); //[3:0],分频因子;[7:4],震荡频率
OLED_WR_Byte(0xA8,0); //设置驱动路数
OLED_WR_Byte(0X3F,0); //默认0X3F(1/64)
OLED_WR_Byte(0xD3,0); //设置显示偏移
OLED_WR_Byte(0X00,0); //默认为0
OLED_WR_Byte(0x40,0); //设置显示开始行 [5:0],行数.
OLED_WR_Byte(0x8D,0); //电荷泵设置
OLED_WR_Byte(0x14,0); //bit2，开启/关闭
OLED_WR_Byte(0x20,0); //设置内存地址模式
OLED_WR_Byte(0x02,0); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
OLED_WR_Byte(0xA1,0); //段重定义设置,bit0:0,0->0;1,0->127;
OLED_WR_Byte(0xC0,0); //设置COM扫描方向;bit3:0,普通模式;1,重定义模式 COM[N-1]->COM0;N:驱动路数
OLED_WR_Byte(0xDA,0); //设置COM硬件引脚配置
OLED_WR_Byte(0x12,0); //[5:4]配置
OLED_WR_Byte(0x81,0); //对比度设置
OLED_WR_Byte(0x7F,0); //1~255;默认0X7F (亮度设置,越大越亮)
OLED_WR_Byte(0xD9,0); //设置预充电周期
OLED_WR_Byte(0xf1,0); //[3:0],PHASE 1;[7:4],PHASE 2;
OLED_WR_Byte(0xDB,0); //设置VCOMH 电压倍率
OLED_WR_Byte(0x30,0); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
OLED_WR_Byte(0xA4,0); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
OLED_WR_Byte(0xA6,0); //设置显示方式;bit0:1,反相显示;0,正常显示
OLED_WR_Byte(0xAF,0); //开启显示
OLED_Clear();
}
void sciishow(char *box, unsigned char A)
{
unsigned char high, low;
high=(A&0xf0)>>4;
low=A&0x0f;
if(high>=0x0A)
{
box[0]=high+0x37;
}
else
{
box[0]=high+0x30;
}
if(low>=0x0A)
{
box[1]=low+0x37;
}
else
{
box[1]=low+0x30;
}
}

29
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#include "gpio.h"
#include "main.h"
unsigned char ReadPin(void)
{
unsigned char pin = 0x00;
if(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_0) == GPIO_PIN_SET)
{
pin = pin+1;
}
pin = pin*2;
if(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_1) == GPIO_PIN_SET)
{
pin = pin+1;
}
pin = pin*2;
if(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_2) == GPIO_PIN_SET)
{
pin = pin+1;
}
pin = pin*2;
if(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_3) == GPIO_PIN_SET)
{
pin = pin+1;
}
pin = pin*2;
return pin;
}

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g4xx_hal_msp.c
* @brief This file provides code for the MSP Initialization
* and de-Initialization codes.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define */
/* USER CODE END Define */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro */
/* USER CODE END Macro */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions */
/* USER CODE END ExternalFunctions */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* Initializes the Global MSP.
*/
void HAL_MspInit(void)
{
/* USER CODE BEGIN MspInit 0 */
/* USER CODE END MspInit 0 */
__HAL_RCC_SYSCFG_CLK_ENABLE();
__HAL_RCC_PWR_CLK_ENABLE();
/* System interrupt init*/
/** Disable the internal Pull-Up in Dead Battery pins of UCPD peripheral
*/
HAL_PWREx_DisableUCPDDeadBattery();
/* USER CODE BEGIN MspInit 1 */
/* USER CODE END MspInit 1 */
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g4xx_it.c
* @brief Interrupt Service Routines.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32g4xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/* External variables --------------------------------------------------------*/
/* USER CODE BEGIN EV */
/* USER CODE END EV */
/******************************************************************************/
/* Cortex-M4 Processor Interruption and Exception Handlers */
/******************************************************************************/
/**
* @brief This function handles Non maskable interrupt.
*/
void NMI_Handler(void)
{
/* USER CODE BEGIN NonMaskableInt_IRQn 0 */
/* USER CODE END NonMaskableInt_IRQn 0 */
/* USER CODE BEGIN NonMaskableInt_IRQn 1 */
while (1)
{
}
/* USER CODE END NonMaskableInt_IRQn 1 */
}
/**
* @brief This function handles Hard fault interrupt.
*/
void HardFault_Handler(void)
{
/* USER CODE BEGIN HardFault_IRQn 0 */
/* USER CODE END HardFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_HardFault_IRQn 0 */
/* USER CODE END W1_HardFault_IRQn 0 */
}
}
/**
* @brief This function handles Memory management fault.
*/
void MemManage_Handler(void)
{
/* USER CODE BEGIN MemoryManagement_IRQn 0 */
/* USER CODE END MemoryManagement_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
/* USER CODE END W1_MemoryManagement_IRQn 0 */
}
}
/**
* @brief This function handles Prefetch fault, memory access fault.
*/
void BusFault_Handler(void)
{
/* USER CODE BEGIN BusFault_IRQn 0 */
/* USER CODE END BusFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_BusFault_IRQn 0 */
/* USER CODE END W1_BusFault_IRQn 0 */
}
}
/**
* @brief This function handles Undefined instruction or illegal state.
*/
void UsageFault_Handler(void)
{
/* USER CODE BEGIN UsageFault_IRQn 0 */
/* USER CODE END UsageFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_UsageFault_IRQn 0 */
/* USER CODE END W1_UsageFault_IRQn 0 */
}
}
/**
* @brief This function handles System service call via SWI instruction.
*/
void SVC_Handler(void)
{
/* USER CODE BEGIN SVCall_IRQn 0 */
/* USER CODE END SVCall_IRQn 0 */
/* USER CODE BEGIN SVCall_IRQn 1 */
/* USER CODE END SVCall_IRQn 1 */
}
/**
* @brief This function handles Debug monitor.
*/
void DebugMon_Handler(void)
{
/* USER CODE BEGIN DebugMonitor_IRQn 0 */
/* USER CODE END DebugMonitor_IRQn 0 */
/* USER CODE BEGIN DebugMonitor_IRQn 1 */
/* USER CODE END DebugMonitor_IRQn 1 */
}
/**
* @brief This function handles Pendable request for system service.
*/
void PendSV_Handler(void)
{
/* USER CODE BEGIN PendSV_IRQn 0 */
/* USER CODE END PendSV_IRQn 0 */
/* USER CODE BEGIN PendSV_IRQn 1 */
/* USER CODE END PendSV_IRQn 1 */
}
/**
* @brief This function handles System tick timer.
*/
void SysTick_Handler(void)
{
/* USER CODE BEGIN SysTick_IRQn 0 */
/* USER CODE END SysTick_IRQn 0 */
HAL_IncTick();
/* USER CODE BEGIN SysTick_IRQn 1 */
/* USER CODE END SysTick_IRQn 1 */
}
/******************************************************************************/
/* STM32G4xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32g4xx.s). */
/******************************************************************************/
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */

285
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/**
******************************************************************************
* @file system_stm32g4xx.c
* @author MCD Application Team
* @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File
*
* This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32g4xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
* After each device reset the HSI (16 MHz) is used as system clock source.
* Then SystemInit() function is called, in "startup_stm32g4xx.s" file, to
* configure the system clock before to branch to main program.
*
* This file configures the system clock as follows:
*=============================================================================
*-----------------------------------------------------------------------------
* System Clock source | HSI
*-----------------------------------------------------------------------------
* SYSCLK(Hz) | 16000000
*-----------------------------------------------------------------------------
* HCLK(Hz) | 16000000
*-----------------------------------------------------------------------------
* AHB Prescaler | 1
*-----------------------------------------------------------------------------
* APB1 Prescaler | 1
*-----------------------------------------------------------------------------
* APB2 Prescaler | 1
*-----------------------------------------------------------------------------
* PLL_M | 1
*-----------------------------------------------------------------------------
* PLL_N | 16
*-----------------------------------------------------------------------------
* PLL_P | 7
*-----------------------------------------------------------------------------
* PLL_Q | 2
*-----------------------------------------------------------------------------
* PLL_R | 2
*-----------------------------------------------------------------------------
* Require 48MHz for RNG | Disabled
*-----------------------------------------------------------------------------
*=============================================================================
******************************************************************************
* @attention
*
* Copyright (c) 2019 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32g4xx_system
* @{
*/
/** @addtogroup STM32G4xx_System_Private_Includes
* @{
*/
#include "stm32g4xx.h"
#if !defined (HSE_VALUE)
#define HSE_VALUE 24000000U /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */
#if !defined (HSI_VALUE)
#define HSI_VALUE 16000000U /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */
/**
* @}
*/
/** @addtogroup STM32G4xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32G4xx_System_Private_Defines
* @{
*/
/************************* Miscellaneous Configuration ************************/
/* Note: Following vector table addresses must be defined in line with linker
configuration. */
/*!< Uncomment the following line if you need to relocate the vector table
anywhere in Flash or Sram, else the vector table is kept at the automatic
remap of boot address selected */
/* #define USER_VECT_TAB_ADDRESS */
#if defined(USER_VECT_TAB_ADDRESS)
/*!< Uncomment the following line if you need to relocate your vector Table
in Sram else user remap will be done in Flash. */
/* #define VECT_TAB_SRAM */
#if defined(VECT_TAB_SRAM)
#define VECT_TAB_BASE_ADDRESS SRAM_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#else
#define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#endif /* VECT_TAB_SRAM */
#endif /* USER_VECT_TAB_ADDRESS */
/******************************************************************************/
/**
* @}
*/
/** @addtogroup STM32G4xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32G4xx_System_Private_Variables
* @{
*/
/* The SystemCoreClock variable is updated in three ways:
1) by calling CMSIS function SystemCoreClockUpdate()
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
Note: If you use this function to configure the system clock; then there
is no need to call the 2 first functions listed above, since SystemCoreClock
variable is updated automatically.
*/
uint32_t SystemCoreClock = HSI_VALUE;
const uint8_t AHBPrescTable[16] = {0U, 0U, 0U, 0U, 0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U, 6U, 7U, 8U, 9U};
const uint8_t APBPrescTable[8] = {0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U};
/**
* @}
*/
/** @addtogroup STM32G4xx_System_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @addtogroup STM32G4xx_System_Private_Functions
* @{
*/
/**
* @brief Setup the microcontroller system.
* @param None
* @retval None
*/
void SystemInit(void)
{
/* FPU settings ------------------------------------------------------------*/
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
SCB->CPACR |= ((3UL << (10*2))|(3UL << (11*2))); /* set CP10 and CP11 Full Access */
#endif
/* Configure the Vector Table location add offset address ------------------*/
#if defined(USER_VECT_TAB_ADDRESS)
SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
#endif /* USER_VECT_TAB_ADDRESS */
}
/**
* @brief Update SystemCoreClock variable according to Clock Register Values.
* The SystemCoreClock variable contains the core clock (HCLK), it can
* be used by the user application to setup the SysTick timer or configure
* other parameters.
*
* @note Each time the core clock (HCLK) changes, this function must be called
* to update SystemCoreClock variable value. Otherwise, any configuration
* based on this variable will be incorrect.
*
* @note - The system frequency computed by this function is not the real
* frequency in the chip. It is calculated based on the predefined
* constant and the selected clock source:
*
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(**)
*
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(***)
*
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(***)
* or HSI_VALUE(*) multiplied/divided by the PLL factors.
*
* (**) HSI_VALUE is a constant defined in stm32g4xx_hal.h file (default value
* 16 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (***) HSE_VALUE is a constant defined in stm32g4xx_hal.h file (default value
* 24 MHz), user has to ensure that HSE_VALUE is same as the real
* frequency of the crystal used. Otherwise, this function may
* have wrong result.
*
* - The result of this function could be not correct when using fractional
* value for HSE crystal.
*
* @param None
* @retval None
*/
void SystemCoreClockUpdate(void)
{
uint32_t tmp, pllvco, pllr, pllsource, pllm;
/* Get SYSCLK source -------------------------------------------------------*/
switch (RCC->CFGR & RCC_CFGR_SWS)
{
case 0x04: /* HSI used as system clock source */
SystemCoreClock = HSI_VALUE;
break;
case 0x08: /* HSE used as system clock source */
SystemCoreClock = HSE_VALUE;
break;
case 0x0C: /* PLL used as system clock source */
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN
SYSCLK = PLL_VCO / PLLR
*/
pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC);
pllm = ((RCC->PLLCFGR & RCC_PLLCFGR_PLLM) >> 4) + 1U ;
if (pllsource == 0x02UL) /* HSI used as PLL clock source */
{
pllvco = (HSI_VALUE / pllm);
}
else /* HSE used as PLL clock source */
{
pllvco = (HSE_VALUE / pllm);
}
pllvco = pllvco * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 8);
pllr = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> 25) + 1U) * 2U;
SystemCoreClock = pllvco/pllr;
break;
default:
break;
}
/* Compute HCLK clock frequency --------------------------------------------*/
/* Get HCLK prescaler */
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
/* HCLK clock frequency */
SystemCoreClock >>= tmp;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file usart.c
* @brief This file provides code for the configuration
* of the USART instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "usart.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
UART_HandleTypeDef huart4;
UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
UART_HandleTypeDef huart3;
/* UART4 init function */
void MX_UART4_Init(void)
{
/* USER CODE BEGIN UART4_Init 0 */
/* USER CODE END UART4_Init 0 */
/* USER CODE BEGIN UART4_Init 1 */
/* USER CODE END UART4_Init 1 */
huart4.Instance = UART4;
huart4.Init.BaudRate = 115200;
huart4.Init.WordLength = UART_WORDLENGTH_8B;
huart4.Init.StopBits = UART_STOPBITS_1;
huart4.Init.Parity = UART_PARITY_NONE;
huart4.Init.Mode = UART_MODE_TX_RX;
huart4.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart4.Init.OverSampling = UART_OVERSAMPLING_16;
huart4.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart4.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart4.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart4) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart4, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart4, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart4) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN UART4_Init 2 */
/* USER CODE END UART4_Init 2 */
}
/* USART1 init function */
void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
/* USART2 init function */
void MX_USART2_UART_Init(void)
{
/* USER CODE BEGIN USART2_Init 0 */
/* USER CODE END USART2_Init 0 */
/* USER CODE BEGIN USART2_Init 1 */
/* USER CODE END USART2_Init 1 */
huart2.Instance = USART2;
huart2.Init.BaudRate = 115200;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart2, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart2, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART2_Init 2 */
/* USER CODE END USART2_Init 2 */
}
/* USART3 init function */
void MX_USART3_UART_Init(void)
{
/* USER CODE BEGIN USART3_Init 0 */
/* USER CODE END USART3_Init 0 */
/* USER CODE BEGIN USART3_Init 1 */
/* USER CODE END USART3_Init 1 */
huart3.Instance = USART3;
huart3.Init.BaudRate = 115200;
huart3.Init.WordLength = UART_WORDLENGTH_8B;
huart3.Init.StopBits = UART_STOPBITS_1;
huart3.Init.Parity = UART_PARITY_NONE;
huart3.Init.Mode = UART_MODE_TX_RX;
huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart3.Init.OverSampling = UART_OVERSAMPLING_16;
huart3.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart3.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart3.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart3) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart3, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart3, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart3) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART3_Init 2 */
/* USER CODE END USART3_Init 2 */
}
void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(uartHandle->Instance==UART4)
{
/* USER CODE BEGIN UART4_MspInit 0 */
/* USER CODE END UART4_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_UART4;
PeriphClkInit.Uart4ClockSelection = RCC_UART4CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* UART4 clock enable */
__HAL_RCC_UART4_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
/**UART4 GPIO Configuration
PC10 ------> UART4_TX
PC11 ------> UART4_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF5_UART4;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/* USER CODE BEGIN UART4_MspInit 1 */
/* USER CODE END UART4_MspInit 1 */
}
else if(uartHandle->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspInit 0 */
/* USER CODE END USART1_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* USART1 clock enable */
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**USART1 GPIO Configuration
PA9 ------> USART1_TX
PA10 ------> USART1_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN USART1_MspInit 1 */
/* USER CODE END USART1_MspInit 1 */
}
else if(uartHandle->Instance==USART2)
{
/* USER CODE BEGIN USART2_MspInit 0 */
/* USER CODE END USART2_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* USART2 clock enable */
__HAL_RCC_USART2_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**USART2 GPIO Configuration
PA2 ------> USART2_TX
PA3 ------> USART2_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN USART2_MspInit 1 */
/* USER CODE END USART2_MspInit 1 */
}
else if(uartHandle->Instance==USART3)
{
/* USER CODE BEGIN USART3_MspInit 0 */
/* USER CODE END USART3_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART3;
PeriphClkInit.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* USART3 clock enable */
__HAL_RCC_USART3_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**USART3 GPIO Configuration
PB10 ------> USART3_TX
PB11 ------> USART3_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF7_USART3;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* USER CODE BEGIN USART3_MspInit 1 */
/* USER CODE END USART3_MspInit 1 */
}
}
void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{
if(uartHandle->Instance==UART4)
{
/* USER CODE BEGIN UART4_MspDeInit 0 */
/* USER CODE END UART4_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_UART4_CLK_DISABLE();
/**UART4 GPIO Configuration
PC10 ------> UART4_TX
PC11 ------> UART4_RX
*/
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_10|GPIO_PIN_11);
/* USER CODE BEGIN UART4_MspDeInit 1 */
/* USER CODE END UART4_MspDeInit 1 */
}
else if(uartHandle->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspDeInit 0 */
/* USER CODE END USART1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART1_CLK_DISABLE();
/**USART1 GPIO Configuration
PA9 ------> USART1_TX
PA10 ------> USART1_RX
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);
/* USER CODE BEGIN USART1_MspDeInit 1 */
/* USER CODE END USART1_MspDeInit 1 */
}
else if(uartHandle->Instance==USART2)
{
/* USER CODE BEGIN USART2_MspDeInit 0 */
/* USER CODE END USART2_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART2_CLK_DISABLE();
/**USART2 GPIO Configuration
PA2 ------> USART2_TX
PA3 ------> USART2_RX
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);
/* USER CODE BEGIN USART2_MspDeInit 1 */
/* USER CODE END USART2_MspDeInit 1 */
}
else if(uartHandle->Instance==USART3)
{
/* USER CODE BEGIN USART3_MspDeInit 0 */
/* USER CODE END USART3_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART3_CLK_DISABLE();
/**USART3 GPIO Configuration
PB10 ------> USART3_TX
PB11 ------> USART3_RX
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10|GPIO_PIN_11);
/* USER CODE BEGIN USART3_MspDeInit 1 */
/* USER CODE END USART3_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */