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题目
配置
注意事项
代码 - 默写大师
EEPROM读写函数
LED驱动函数
ADC采集
上电初始化
LCD
按键
PWM互补输出
全部代码
hardware.c
hardware.h
control.c
control.h
main.c 题目 配置
注意事项
复制LCD的工程#xff0c;先配置资源 --- 勾选完选项一…目录
题目
配置
注意事项
代码 - 默写大师
EEPROM读写函数
LED驱动函数
ADC采集
上电初始化
LCD
按键
PWM互补输出
全部代码
hardware.c
hardware.h
control.c
control.h
main.c 题目 配置
注意事项
复制LCD的工程先配置资源 --- 勾选完选项一定要再看一眼可能选择错误 ADC配置ADC2_IN15对应PB15引脚 EEROM配置PB6和PB7 按键 输入模式PB0、PB1、PB2、PA0
LED 一定要使能PD2 PWM互补输出用TIM15 TIM6 - 10ms基准定时器 代码 - 默写大师
先默写几个函数
EEPROM读写函数
随机地址读函数 - 参考手册的时序 uint8_t EEPROM_ReadByte(uint8_t address)
{uint8_t data;I2CStart();I2CSendByte(0xA0); // address writeI2CWaitAck();I2CSendByte(address);I2CWaitAck();I2CStop();I2CStart();I2CSendByte(0xA1); // address readI2CWaitAck();data I2CReceiveByte();I2CSendNotAck();I2CStop();return data;
}void EEPROM_WriteByte(uint8_t address, uint8_t data)
{I2CStart();I2CSendByte(0xA0);I2CWaitAck();I2CSendByte(address);I2CWaitAck();I2CSendByte(data);I2CWaitAck();I2CStop();
}
定义几个结构体
//-----------------------
void power_init(void);
void LCD_Disp(void);
void Key_Proc(void);
void ADC_Proc(void);
void PWM_Proc(void);//-----------------------
struct Tick{uint32_t lcd;uint32_t key;uint32_t adc;uint32_t pwm;
};
extern struct Tick tick;struct Flag{bool PWM_Mode;uint8_t LCD_View;
};
extern struct Flag flag;struct Param{double ADC;uint16_t PWM_Frq; //频率uint8_t PWM_Duty_PA9;uint8_t PWM_Duty_PA14;
};
extern struct Param param;
//定义变量
struct Tick tick;
struct Flag flag;
struct Param param;
struct Keys key;
LED驱动函数
void LED_Disp(uint8_t state)
{HAL_GPIO_WritePin(GPIOC, 0xFF00, GPIO_PIN_SET); //0ffHAL_GPIO_WritePin(GPIOC, state 8, GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_RESET);
}
ADC采集
double Get_ADC(ADC_HandleTypeDef *hadc)
{uint32_t adc;HAL_ADC_Start(hadc);adc HAL_ADC_GetValue(hadc);return adc*3.3/4040; //这里应该是adc*3.3/4096
}
double Get_ADC(ADC_HandleTypeDef *hadc)
{uint32_t adc;HAL_ADC_Start(hadc);adc Hal_ADC_GetValue(hadc);return adc*3.3/4040;
}
返回值应该是adc*3.3/4096但是这里我改成了return adc*3.3/4040; 补偿电压采集的数据范围是0~3.30V
void ADC_Proc(void)
{if (uwTick - tick.adc 250)return;tick.adc uwTick;param.ADC Get_ADC(hadc2);
}
上电初始化
void power_init(void)
{LCD_Clear(Black);LCD_SetBackColor(Black);LCD_SetTextColor(White);LED_Disp(0x00); //0ffI2CInit();if (EEPROM_ReadByte(0x55) ! 0x11) //第一次上电{param.PWM_Frq 1000; //初始化参数EEPROM_WriteByte(0x55, 0x11);HAL_Delay(10);EEPROM_WriteByte(0x01, 1);HAL_Delay(10);}else{param.PWM_Frq EEPROM_ReadByte(0x01)*1000;}
}
LCD
封装LCD显示函数使用可变参数列表
#include stdio.h
#include string.h
#include stdarg.hvoid LCD_Printf(uint8_t linex, char *format, ...)
{char lcd_show_text[30];memset(lcd_show_text, \0, sizeof(lcd_show_text));va_list arg;va_start(arg, format);vsprintf(lcd_show_text, format, arg);LCD_DisplayStringLine(linex, (uint8_t *)lcd_show_text);va_end(arg);
}
LCD界面
void LCD_Disp(void)
{if (uwTick - tick.lcd 200)return;tick.lcd uwTick;if (flag.LCD_View 0){LCD_Printf(Line0, Para);LCD_Printf(Line2, ADC_V:%.2fV , param.ADC);LCD_Printf(Line4, State:%s , (flag.PWM_Mode) ? start : stop ); //三目运算符LCD_Printf(Line6, Siginal:PA9: %2d%% , (flag.PWM_Mode) ? (param.PWM_Duty_PA9) : 0);LCD_Printf(Line7, PB14:%2d%% , (flag.PWM_Mode) ? (param.PWM_Duty_PA14) :0);LCD_Printf(Line8, %dKHz , param.PWM_Frq/1000);LCD_Printf(Line9, 1); }else if (flag.LCD_View 1){LCD_Printf(Line1, Setting);LCD_Printf(Line5, Signal_Frq:%dKHz , param.PWM_Frq/1000);LCD_Printf(Line9, 2);}
}
按键
按键扫描
void Key_Read(void)
{if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0) 0)key.value 1;else if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_1) 0)key.value 2;else if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_2) 0)key.value 3;else if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) 0)key.value 4;elsekey.value 0;key.down key.value (key.value ^ key.old);key.up ~key.value (key.value ^ key.old);key.old key.value;
}
按键处理函数
void Key_Proc(void)
{if (uwTick - tick.key 10) //10msreturn;tick.key uwTick;Key_Read();if (key.down 1) //“B1”按键设定为“启动/停止”按键{flag.PWM_Mode !flag.PWM_Mode;}if (key.down 2){//先判断是否存入E2PROMif (flag.LCD_View 1){//eepromEEPROM_WriteByte(0x01, param.PWM_Frq/1000); //存整数部分HAL_Delay(10);}// 再刷新界面flag.LCD_View ;if (flag.LCD_View 2) flag.LCD_View 0;LCD_Clear(Black); }if (key.down 3){if (flag.LCD_View 1){param.PWM_Frq 1000;if (param.PWM_Frq 10000) param.PWM_Frq 1000;}}
}
PWM互补输出
PWM配置的定时器给的80-1预分频那计数值就是80M/80 1M 频率设置TIMx-ARR 1e6/频率 占空比设置TIMx-CCRx (1e6/频率)*占空比 我代码里的占空比只保留整数部分所以我的CCR赋值时候最后除以100。
void PWM_Proc(void)
{if (uwTick - tick.pwm 100)return;tick.pwm uwTick;//计算占空比param.PWM_Duty_PA9 (uint8_t)(param.ADC*100.0/3.3);param.PWM_Duty_PA14 100-param.PWM_Duty_PA9;TIM15-ARR 1e6 / param.PWM_Frq; //计算频率if (flag.PWM_Mode 0) //stop{ //关闭PWM输出LED_Disp(0);HAL_TIM_PWM_Stop(htim15, TIM_CHANNEL_1);HAL_TIMEx_PWMN_Stop(htim15, TIM_CHANNEL_1);}else{LED_Disp(0x01);TIM15 - CCR1 (TIM15-ARR 1) * param.PWM_Duty_PA9 / 100;HAL_TIM_PWM_Start(htim15, TIM_CHANNEL_1);HAL_TIMEx_PWMN_Start(htim15, TIM_CHANNEL_1);}
}互补PWM的函数
//PWM开启
HAL_TIM_PWM_Start(htim15, TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Start(htim15, TIM_CHANNEL_1);
//PWM关闭
HAL_TIM_PWM_Stop(htim15, TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Stop(htim15, TIM_CHANNEL_1);
全部代码
hardware.c
#include hardware.hstruct Keys key;void LED_Disp(uint8_t state)
{HAL_GPIO_WritePin(GPIOC, 0xFF00, GPIO_PIN_SET); //0ffHAL_GPIO_WritePin(GPIOC, state 8, GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_RESET);
}void Key_Read(void)
{if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0) 0)key.value 1;else if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_1) 0)key.value 2;else if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_2) 0)key.value 3;else if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) 0)key.value 4;elsekey.value 0;key.down key.value (key.value ^ key.old);key.up ~key.value (key.value ^ key.old);key.old key.value;
}double Get_ADC(ADC_HandleTypeDef *hadc)
{uint32_t adc;HAL_ADC_Start(hadc);adc HAL_ADC_GetValue(hadc);return adc*3.3/4040;
}hardware.h
#ifndef __HARDWARE_H
#define __HARDWARE_H#include stm32g4xx_hal.hvoid LED_Disp(uint8_t state);
void Key_Read(void);
double Get_ADC(ADC_HandleTypeDef *hadc);struct Keys{uint8_t value;uint8_t old;uint8_t down;uint8_t up;
};
extern struct Keys key;#endifcontrol.c
#include control.h//定义变量
struct Tick tick;
struct Flag flag;
struct Param param;void power_init(void)
{LCD_Clear(Black);LCD_SetBackColor(Black);LCD_SetTextColor(White);LED_Disp(0x00); //0ffI2CInit();if (EEPROM_ReadByte(0x55) ! 0x11) //第一次上电{param.PWM_Frq 1000; //初始化参数EEPROM_WriteByte(0x55, 0x11);HAL_Delay(10);EEPROM_WriteByte(0x01, 1);HAL_Delay(10);}else{param.PWM_Frq EEPROM_ReadByte(0x01)*1000;}
}void LCD_Disp(void)
{if (uwTick - tick.lcd 200)return;tick.lcd uwTick;if (flag.LCD_View 0){LCD_Printf(Line0, Para);LCD_Printf(Line2, ADC_V:%.2fV , param.ADC);LCD_Printf(Line4, State:%s , (flag.PWM_Mode) ? start : stop ); //三目运算符LCD_Printf(Line6, Siginal:PA9: %2d%% , (flag.PWM_Mode) ? (param.PWM_Duty_PA9) : 0);LCD_Printf(Line7, PB14:%2d%% , (flag.PWM_Mode) ? (param.PWM_Duty_PA14) :0);LCD_Printf(Line8, %dKHz , param.PWM_Frq/1000);LCD_Printf(Line9, 1); }else if (flag.LCD_View 1){LCD_Printf(Line1, Setting);LCD_Printf(Line5, Signal_Frq:%dKHz , param.PWM_Frq/1000);LCD_Printf(Line9, 2);}
}void Key_Proc(void)
{if (uwTick - tick.key 10) //10msreturn;tick.key uwTick;Key_Read();if (key.down 1) //“B1”按键设定为“启动/停止”按键{flag.PWM_Mode !flag.PWM_Mode;}if (key.down 2){//先判断是否存入E2PROMif (flag.LCD_View 1){//eepromEEPROM_WriteByte(0x01, param.PWM_Frq/1000); //存整数部分HAL_Delay(10);}// 再刷新界面flag.LCD_View ;if (flag.LCD_View 2) flag.LCD_View 0;LCD_Clear(Black); }if (key.down 3){if (flag.LCD_View 1){param.PWM_Frq 1000;if (param.PWM_Frq 10000) param.PWM_Frq 1000;}}
}void ADC_Proc(void)
{if (uwTick - tick.adc 250)return;tick.adc uwTick;param.ADC Get_ADC(hadc2);
}void PWM_Proc(void)
{if (uwTick - tick.pwm 100)return;tick.pwm uwTick;//计算占空比param.PWM_Duty_PA9 (uint8_t)(param.ADC*100.0/3.3);param.PWM_Duty_PA14 100-param.PWM_Duty_PA9;TIM15-ARR 1e6 / param.PWM_Frq; //计算频率if (flag.PWM_Mode 0) //stop{ //关闭PWM输出LED_Disp(0);HAL_TIM_PWM_Stop(htim15, TIM_CHANNEL_1);HAL_TIMEx_PWMN_Stop(htim15, TIM_CHANNEL_1);}else{LED_Disp(0x01);TIM15 - CCR1 (TIM15-ARR 1) * param.PWM_Duty_PA9 / 100;HAL_TIM_PWM_Start(htim15, TIM_CHANNEL_1);HAL_TIMEx_PWMN_Start(htim15, TIM_CHANNEL_1);}
}
control.h
#ifndef __CONTROL_H
#define __CONTROL_H#include stm32g4xx_hal.h
#include string.h
#include stdio.h
#include stdbool.h#include hardware.h
#include i2c_hal.h
#include tim.h
#include adc.h
#include lcd.h//-----------------------
void power_init(void);
void LCD_Disp(void);
void Key_Proc(void);
void ADC_Proc(void);
void PWM_Proc(void);//-----------------------
struct Tick{uint32_t lcd;uint32_t key;uint32_t adc;uint32_t pwm;};
extern struct Tick tick;struct Flag{bool PWM_Mode;uint8_t LCD_View;};
extern struct Flag flag;struct Param{double ADC;uint16_t PWM_Frq; //频率uint8_t PWM_Duty_PA9;uint8_t PWM_Duty_PA14;};
extern struct Param param;
//-----------------------#endif
main.c
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include main.h
#include adc.h
#include tim.h
#include gpio.h/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */#include control.h/* 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_TIM6_Init();MX_ADC2_Init();MX_TIM15_Init();/* USER CODE BEGIN 2 */LCD_Init();/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */power_init();while (1){Key_Proc();LCD_Disp();ADC_Proc();PWM_Proc();/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}
完结第六届国赛比较简单只有PWM互补输出是没有写过的
后续会更新其他届的赛题同步源码到我的Gitee~
波形展示具体见B站演示视频
