STM32驱动MLX90614红外测温模块 |
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STM32驱动MLX90614红外测温模块
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简介：STM32F103C8T6驱动MLX90614红外测温模块源码介绍。 开发平台：KEIL ARM MCU型号：STM32F103C8T6 传感器型号：MLX90614 特别提示：驱动内可能使用了某些其他组件，比如delay等，在文末外设模板下载地址内有。 1积分源码下载地址在文末！！！ 接口图：
使用举例： #include #include "MLX90614.h" int main() { float tem; SMBus_Init(); // 初始化 while(1) { tem = SMBus_ReadTemp(); // 读取温度 printf("tem:%f\n", tem); delayMs(1000); } }驱动源码： MLX90614.c #include "MLX90614.h" #define ACK 0 #define NACK 1 #define SA 0x00 #define RAM_ACCESS 0x00 #define EEPROM_ACCESS 0x20 #define RAM_TOBJ1 0x07 #define SMBUS_PORT GPIOB #define SMBUS_SCK GPIO_Pin_7 #define SMBUS_SDA GPIO_Pin_6 #define RCC_APB2Periph_SMBUS_PORT RCC_APB2Periph_GPIOB #define SMBUS_SCK_H() SMBUS_PORT->BSRR = SMBUS_SCK #define SMBUS_SCK_L() SMBUS_PORT->BRR = SMBUS_SCK #define SMBUS_SDA_H() SMBUS_PORT->BSRR = SMBUS_SDA #define SMBUS_SDA_L() SMBUS_PORT->BRR = SMBUS_SDA #define SMBUS_SDA_PIN() SMBUS_PORT->IDR & SMBUS_SDA void SMBus_StartBit(void) { SMBUS_SDA_H(); // Set SDA line SMBus_Delay(8); // Wait a few microseconds SMBUS_SCK_H(); // Set SCL line SMBus_Delay(8); // Generate bus free time between Stop SMBUS_SDA_L(); // Clear SDA line SMBus_Delay(8); // Hold time after (Repeated) Start // Condition. After this period, the first clock is generated. //(Thd:sta=4.0us min) SMBUS_SCK_L(); // Clear SCL line SMBus_Delay(8); // Wait a few microseconds } void SMBus_StopBit(void) { SMBUS_SCK_L(); // Clear SCL line SMBus_Delay(8); // Wait a few microseconds SMBUS_SDA_L(); // Clear SDA line SMBus_Delay(8); // Wait a few microseconds SMBUS_SCK_H(); // Set SCL line SMBus_Delay(8); // Stop condition setup time(Tsu:sto=4.0us min) SMBUS_SDA_H(); // Set SDA line } u8 SMBus_SendByte(u8 Tx_buffer) { u8 Bit_counter; u8 Ack_bit; u8 bit_out; for(Bit_counter=8; Bit_counter; Bit_counter--) { if (Tx_buffer&0x80) { bit_out=1; // If the current bit of Tx_buffer is 1 set bit_out } else { bit_out=0; // else clear bit_out } SMBus_SendBit(bit_out); // Send the current bit on SDA Tx_buffer |
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