STM32-I2C-HDC1080.zip

#include <stdint.h> #include "HDC1080.h" #include "delay.h" #include "iic.h" #include "stm32f10x.h" #include "headfile.h" void HDC1080_Write_Buffer(uint8_t addr, uint8_t *buffer, uint8_t len) { IIC_Start(); IIC_Send_Byte(HDC1080_Device_Adderss); IIC_Wait_Ack(); IIC_Send_Byte(addr); IIC_Wait_Ack(); while ( len-- ) { IIC_Send_Byte(*buffer); IIC_Wait_Ack(); buffer++; } IIC_Stop(); } /******************************************************************************* * @brief HDC1080_Read_Buffer between triger and read there is no wait. * @param uint8_t addr is point register * @param uint8_t *buffer is the need to read data point * @param uint8_t len is the read data length * @retval void *******************************************************************************/ void HDC1080_Read_Buffer(uint8_t addr, uint8_t *buffer, uint8_t len) { uint8_t temp = 0; IIC_Start(); IIC_Send_Byte(HDC1080_Device_Adderss); IIC_Wait_Ack(); IIC_Send_Byte(addr); IIC_Wait_Ack(); IIC_Stop(); while(IIC_SCL) { delay_us(20); temp++; if ( temp >= 100 ) { break; } } IIC_Start(); IIC_Send_Byte(HDC1080_Device_Adderss|0x01); //read IIC_Wait_Ack(); while ( len-- ) { *buffer = IIC_Read_Byte(0); buffer++; if ( len == 0 ) IIC_NAck(); else IIC_Ack(); } IIC_Stop(); } /******************************************************************************* * @brief HDC1080_Read_MBuffer becareful between triger and read there is a wait. * @param uint8_t addr is point register * @param uint8_t *buffer is the need to read data point * @param uint8_t len is the read data length * @retval void *******************************************************************************/ void HDC1080_Read_MBuffer(uint8_t addr, uint8_t *buffer, uint8_t len) { uint8_t temp = 0; IIC_Start(); IIC_Send_Byte(HDC1080_Device_Adderss); IIC_Wait_Ack(); IIC_Send_Byte(0X00); IIC_Wait_Ack(); IIC_Stop(); while(IIC_SCL) { delay_ms(20); temp++; if ( temp >= 100 ) { break; } } delay_ms(10); // after triger should wait at least 6.5ms IIC_Start(); IIC_Send_Byte(HDC1080_Device_Adderss|0x01); //read IIC_Wait_Ack(); while ( len-- ) { *buffer = IIC_Read_Byte(0); buffer++; if ( len == 0 ) IIC_NAck(); else IIC_Ack(); } IIC_Stop(); } /******************************************************************************* * @brief HDC1080_Soft_Reset * @param void * @retval void *******************************************************************************/ void HDC1080_Soft_Reset(void) { uint8_t temp[2]; temp[0] = 0x80; temp[1] = 0x00; HDC1080_Write_Buffer(HDC1080_Read_Config, temp, 2); delay_ms(20);//there should be waiting for more than 15 ms. } /******************************************************************************* * @brief HDC1080_Setting * @param void * @retval void *******************************************************************************/ void HDC1080_Setting(void) { uint16_t tempcom = 0; uint8_t temp[2]; tempcom |= 1<<HDC1080_Mode ;//???????????'?? // ?�????�???14bit temp[0] = (uint8_t)(tempcom >> 8); temp[1] = (uint8_t)tempcom; HDC1080_Write_Buffer(0x02, temp, 2); } /******************************************************************************* * @brief HDC1080_Init * @param void * @retval void *******************************************************************************/ void HDC1080_Init(void) { uint8_t temp = 0; IIC_Init(); HDC1080_Soft_Reset(); HDC1080_Setting(); while( IIC_SCL ) { delay_us(20);; temp++; if ( temp >= 100 ) { break; } } } /******************************************************************************* * @brief HDC1080_Read_Temper * @param void * @retval int16_t tempr value *******************************************************************************/ int16_t HDC1080_Read_Temper(void) { uint8_t buffer[2]; HDC1080_Read_MBuffer(0x00, buffer, 2); //return ((buffer[0]<<8)|buffer[1]); return (int16_t)((((buffer[0]<<8)|buffer[1])/65536.0)*165-40); //return (int16_t)(((((buffer[0]<<8)|buffer[1])/65536.0)*165-40)*100); } /******************************************************************************* * @brief HDC1080_Read_Humidity * @param void * @retval int16_t Humidity value *******************************************************************************/ int16_t HDC1080_Read_Humidi(void) { uint8_t buffer[2]; HDC1080_Read_MBuffer(HDC1080_Read_Humidity, buffer, 2); return (buffer[0]<<8)|buffer[1]; //return (int16_t)((((buffer[0]<<8)|buffer[1])/65536.0)*10000); } /******************************************************************************* * @brief HDC1080_Read_Configuration * @param void * @retval Config value *******************************************************************************/ uint16_t HDC1080_Read_Conf(void) { uint8_t buffer[2]; HDC1080_Read_Buffer(HDC1080_Read_Config, buffer, 2); return ((buffer[0]<<8)|buffer[1]); } /******************************************************************************* * @brief HDC1080_Read_ManufacturerID * @param void * @retval ManufacturerID *******************************************************************************/ uint16_t HDC1080_Read_ManufacturerID(void) { uint8_t buffer[2]; HDC1080_Read_Buffer(0xfe, buffer, 2); return ((buffer[0]<<8)|buffer[1]); } /******************************************************************************* * @brief HDC1080_Read_DeviceID * @param void * @retval DeviceID *******************************************************************************/ uint16_t HDC1080_Read_DeviceID(void) { uint8_t buffer[2]; HDC1080_Read_Buffer(0xff, buffer, 2); return ((buffer[0]<<8)|buffer[1]); }