蓝桥杯物联网竞赛_STM32L071KBU6_手动配置代码分析

Narnat2024-05-27 12:14

大概还有八天国赛，好久没练了，手动配置的代码又有些生疏了，再来回顾回顾

c 复制代码

void OLED_Write(unsigned char type, unsigned char data){  // 主要是给显示屏写指令 
	unsigned char WriteData[2];
	WriteData[0] = type;
	WriteData[1] = data;
	HAL_I2C_Master_Transmit(&hi2c3, 0x78, WriteData, 2, 0xff);  // 函数是主机发送给显示屏用的i2c3线 
}

void Function_OledInit(unsigned char ms){
	HAL_GPIO_WritePin(OLED_Power_GPIO_Port, OLED_Power_Pin, GPIO_PIN_RESET);
	HAL_Delay(ms);  // 这里延时一下是等主机通上电再调用初始化函数写指令 
	OLED_Init();  // 写指令 
}


/*
   初始化指令不用返还数据
   取数据指令会返还数据
   用的spi1线 
*/ 
unsigned char SPI_WriteRead(unsigned char address, unsigned char data){
	unsigned char TxData[2], RxData[2];
	TxData[0] = address;
	TxData[1] = data;
	HAL_GPIO_WritePin(SPI1_NSS_GPIO_Port, SPI1_NSS_Pin, GPIO_PIN_RESET);  // 片选 
	HAL_SPI_TransmitReceive(&hspi1, TxData, RxData, sizeof(TxData), 0xff);
	HAL_GPIO_WritePin(SPI1_NSS_GPIO_Port, SPI1_NSS_Pin, GPIO_PIN_SET);
	return RxData[1]; 
}

float* Function_AdcGet(unsigned char ms){
	uint16_t AdcData[2];
	static float AdcValue[3];
	for(unsigned char i = 0; i < 2; i ++){
		HAL_ADC_Start(&hadc); 
		HAL_ADC_PollForConversion(&hadc, 0xff);  // 等待轮转 
		AdcData[i] = HAL_ADC_GetValue(&hadc);
		AdcValue[i] = AdcData[i] * 3.30f / 4095;
		HAL_Delay(ms); 
	}
	HAL_ADC_Stop(&hadc);
	AdcValue[2] = AdcValue[0];
	AdcValue[0] = AdcValue[1];
	AdcValue[1] = AdcValue[2];
	return AdcValue;
}



void Function_SendMsg(const char* data, uint16_t len){
	HAL_UART_Transmit(&huart2, data, len, 0xff);
}

void Function_ReceiveMsg(char* data, uint16_t len){
	HAL_UART_Receive(&huart2, data, len, 0xff); 
}

// << 8 等效 * 2 ^ 8 
float Function_GetTemp(){
	unsigned char Data[2];
	Data[0] = 0x24;
	Data[1] = 0x0b;
	HAL_I2C_Master_Transmit(&hi2c1, 0x94, Data, 2, 0xff);  // 向外设发送获取温度指令 
	HAL_I2C_Master_Receive(&hi2c1, 0x95, Data, 2, 0xff);  // 接收获取的温度数据 
	return (float) (Data[0] << 8 | Data[1]) * 175.0 / 65535 - 45;  // 转换返还 
}

再次分析一下在于OLED用的是i2c3,温度用的是i2c1,LORA用的是spi1,串口用的uart2,剩下就是一个adc了
配置对应引脚也是相应的配就可以了