mlx90614.zip_STM32红外测温_ear9fp_stm32 MLX90614_stm32测温_红外 测温

#include "stm32f10x.h" #include "sys.h" //************************************ #define uint32_t unsigned int #define uint8_t unsigned char #define Nack_counter 10 #define IIC_counter 10 float Value; extern void delay_us(uint32_t); //**************端口定义************** //mlx90614端口定义 //棕色 正 黑色 负 //SCL时钟线(h色线) PA7 //SDA数据线(b色线) PA6 /* #define SCL_SET GPIO_SetBits(GPIOB,GPIO_Pin_10) #define SCL_CLR GPIO_ResetBits(GPIOB,GPIO_Pin_10) #define SDA_SET GPIO_SetBits(GPIOB,GPIO_Pin_11) #define SDA_CLR GPIO_ResetBits(GPIOB,GPIO_Pin_11) */ //IO方向设置 #define SDA_IN() {GPIOB->CRH&=0XFFFFFFF0;GPIOB->CRH|=8;} #define SDA_OUT() {GPIOB->CRH&=0XFFFFFFF0;GPIOB->CRH|=3;} #define SCL PBout(9) #define SDA PBout(8) //SDA #define READ_SDA PBin(8) //输入SDA //************????**************** uint8_t bit_out; uint8_t bit_in; uint8_t DataH,DataL,Pecreg; //************????*********************************** void start_bitsz(void); //MLX90614??????? void stop_bitsz(void); //MLX90614??????? uint8_t rx_bytesz(void); //MLX90614??????? void send_bitsz(void); //MLX90614?????? void tx_bytesz(uint8_t dat_byte); //MLX90614??????? void receive_bitsz(void); //MLX90614?????? uint32_t memreadsz(void); //????? uint32_t ta_memreadsz(void); //????? //*********???????********* //************************************ void start_bitsz(void) { SDA_OUT(); SDA=1; delay_us(IIC_counter); delay_us(IIC_counter); SCL=1; delay_us(IIC_counter); SDA=0; delay_us(IIC_counter); SCL=0; delay_us(IIC_counter); } //------------------------------ void stop_bitsz(void) { SDA_OUT(); SCL=0; SDA=0; delay_us(IIC_counter); SCL=1; delay_us(IIC_counter); SDA=1; } //---------??????--------- void tx_bytesz(uint8_t dat_byte) { char i,n,dat; n=Nack_counter; TX_again: dat=dat_byte; for(i=0;i<8;i++) { if(dat&0x80) bit_out=1; else bit_out=0; send_bitsz(); dat=dat<<1; } receive_bitsz(); if(bit_in==1) { stop_bitsz(); if(n!=0) { n--; goto Repeat; } else goto exit; } else goto exit; Repeat: start_bitsz(); goto TX_again; exit: ; } //-----------?????--------- void send_bitsz(void) { SDA_OUT(); if(bit_out==0) SDA=0; else SDA=1; delay_us(IIC_counter); // delay_us(IIC_counter); SCL=1; delay_us(IIC_counter); delay_us(IIC_counter); SCL=0; delay_us(IIC_counter); } //----------??????-------- uint8_t rx_bytesz(void) { uint8_t i,dat; dat=0; for(i=0;i<8;i++) { dat=dat<<1; receive_bitsz(); if(bit_in==1) dat=dat+1; } send_bitsz(); return dat; } //----------?????---------- void receive_bitsz(void) { SDA_IN(); SDA=1;//bit_in=1; delay_us(IIC_counter); delay_us(IIC_counter); SCL=1; delay_us(IIC_counter); delay_us(IIC_counter); bit_in=READ_SDA; // delay_us(IIC_counter); SCL=0; // delay_us(IIC_counter); } //------------??-------------- //------------------------------ uint32_t memreadsz(void) { start_bitsz(); tx_bytesz(0x00); //Send SlaveAddress //if(_Is90614) tx_bytesz(0x07); //Send Command //else // tx_bytesz(0x27); //Send Command // delay_us(0x3FFF); start_bitsz(); tx_bytesz(0x01); bit_out=0; DataH=rx_bytesz(); bit_out=0; DataL=rx_bytesz(); bit_out=1; Pecreg=rx_bytesz(); stop_bitsz(); // return(DataL*256+DataH); Value=(DataL*256+DataH); Value = Value * 10; Value = Value/50 - 2731; return(Value); } uint32_t ta_memreadsz(void) //环境温度 { start_bitsz(); tx_bytesz(0x00); //Send SlaveAddress //if(_Is90614) tx_bytesz(0x06); //Send Command //else // tx_bytesz(0x27); //Send Command // delay_us(0x3FFF); start_bitsz(); tx_bytesz(0x01); bit_out=0; DataH=rx_bytesz(); bit_out=0; DataL=rx_bytesz(); bit_out=1; Pecreg=rx_bytesz(); stop_bitsz(); // return(DataL*256+DataH); Value=(DataL*256+DataH); Value = Value * 10; Value = Value/50 - 2731; return(Value); }