首先用cubemx配置基础外设(STM32G431RBT6)
RCC:
GPIO:包括按键(PB0,PB1,PB2,PA0全部配置输入),LED(PC8~PC15和PD2全部配置输出)
把PC8~PC15设置输出高电平
UART:PA9和PA10
ADC:ADC1和ADC2用PB12 PB15
时钟修改一下
TIM:
先配基本定时器TIM6
再配TIM2(输入捕获)
一个上升沿一个下降沿
再配TIM3跟TIM17(PWM输出)
频率1KHz,占空比10%
输出频率和占空比可自行修改
用__HAL TIM SET COMPARE (&htim2,TIM_CHANNEL_1,500)
和__HAI TIM SET AUTORELOAD(&htim2,999)
最后配置TIM15
TIM全部搞定
RTC:
1.LED部分(点亮或者熄灭8个LED灯)
void LED_Disp(uint8_t ucLed) { //**将所有的灯熄灭 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_8 |GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_RESET); //根据ucLed的数值点亮相应的灯 HAL_GPIO_WritePin(GPIOC, ucLed<<8, GPIO_PIN_RESET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_SET); HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_RESET); }
2.KEY部分(四个按键)
uint8_t Key_Scan(void) { uint8_t unKey_Val = 0; if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0) == GPIO_PIN_RESET) unKey_Val = 1; if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_1) == GPIO_PIN_RESET) unKey_Val = 2; if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_2) == GPIO_PIN_RESET) unKey_Val = 3; if(HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == GPIO_PIN_RESET) unKey_Val = 4; return unKey_Val; }
3.LCD显示
LCD_Init();//初始化LCD LCD_Clear(White); LCD_SetBackColor(White); LCD_SetTextColor(Blue); sprintf((char *)Lcd_Disp_String, "xxx");//xxx为想显示的内容 LCD_DisplayStringLine(Line0, Lcd_Disp_String);
4.USART串口使用
检测串口部分 void Usart_Proc(void) { if((uwTick - uwTick_Usart_Point)<1000) return;//减速函数 uwTick_Usart_Set_Point = uwTick; sprintf(str, "%04d:Hello,world.\r\n", counter); HAL_UART_Transmit(&huart1,(unsigned char *)str, strlen(str), 50); if(++counter == 10000) counter = 0; } 5.ADC通道采集(R37跟R38) uint16_t getADC1(void) { uint16_t adc = 0; HAL_ADC_Start(&hadc1); adc = HAL_ADC_GetValue(&hadc1); return adc; } uint16_t getADC2(void) { uint16_t adc = 0; HAL_ADC_Start(&hadc2); adc = HAL_ADC_GetValue(&hadc2); return adc; }
6.PWM输入捕获输出比较(占空比问题)
//基本定时器6更新回调函数 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { if(htim->Instance==TIM6) { // if(++counter == 10) // { // counter = 0; // sprintf(str, "Hello,world.\r\n"); // HAL_UART_Transmit(&huart1,(unsigned char *)str, strlen(str), 50); // } } } //输入捕获PWM中断回调 void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim) { if(htim->Instance==TIM2) { if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1) { PWM_T_Count = HAL_TIM_ReadCapturedValue(htim,TIM_CHANNEL_1)+1; PWM_Duty = (float)PWM_D_Count/PWM_T_Count; } else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2) { PWM_D_Count = HAL_TIM_ReadCapturedValue(htim,TIM_CHANNEL_2)+1; } } } //方波输出回调函数 void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim) { if(htim->Instance==TIM15) { if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1) { __HAL_TIM_SET_COMPARE(htim,TIM_CHANNEL_1,(__HAL_TIM_GetCounter(htim)+500));//1Khz } } }
7.E2PROM的读写(掉电保存数据)
void iic_24c02_write(uint8_t *pucBuf, uint8_t ucAddr, uint8_t ucNum) { I2CStart(); I2CSendByte(0xa0); I2CWaitAck(); I2CSendByte(ucAddr); I2CWaitAck(); while(ucNum--) { I2CSendByte(*pucBuf++); I2CWaitAck(); } I2CStop(); delay1(500); } void iic_24c02_read(uint8_t *pucBuf, uint8_t ucAddr, uint8_t ucNum) { I2CStart(); I2CSendByte(0xa0); I2CWaitAck(); I2CSendByte(ucAddr); I2CWaitAck(); I2CStart(); I2CSendByte(0xa1); I2CWaitAck(); while(ucNum--) { *pucBuf++ = I2CReceiveByte(); if(ucNum) I2CSendAck(); else I2CSendNotAck(); } I2CStop(); }
8.RTC时钟
HAL_RTC_GetTime(&hrtc, &H_M_S_Time, RTC_FORMAT_BIN);//读取日期和时间必须同时使用 HAL_RTC_GetDate(&hrtc, &Y_M_D_Date, RTC_FORMAT_BIN); sprintf((char *)Lcd_Disp_String, "Time:%02d-%02d-%02d",(unsigned int)H_M_S_Time.Hours, (unsigned int)H_M_S_Time.Minutes,(unsigned int)H_M_S_Time.Seconds); LCD_DisplayStringLine(Line4, Lcd_Disp_String);
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