STM32L4_AplProject/Src/TMP75AIDGKR.c

/*
 * BMA253.c
 *
 *  Created on: 2019. 5. 27.
 *      Author: parkyj
 */

#include "TMP75AIDGKR.h"
 
 
 static HAL_StatusTypeDef Tmp75_Write_Register(I2C_HandleTypeDef *hi2c, uint8_t adr, 
                             uint8_t register_pointer, uint16_t register_value);
 
 
 
 static HAL_StatusTypeDef Tmp75_Read_Register(I2C_HandleTypeDef *hi2c, uint8_t adr, 
                             uint8_t register_pointer, uint8_t* receive_buffer);
                             
 
 
 /*!
  * \brief Convert address line state to slave address
  *
  * \retval slave address or 0xff if address line state combination is invalid
  */
 uint8_t Tmp75_SlaveAddress(Tmp75_AddressLine_t a2, Tmp75_AddressLine_t a1, 
 Tmp75_AddressLine_t a0)
 {
     
     typedef struct
     {
         Tmp75_AddressLine_t a2;
         Tmp75_AddressLine_t a1;
         Tmp75_AddressLine_t a0;
         uint8_t SlaveAddress;
     } Lm75_addrconv_t;
     
     const Lm75_addrconv_t Lm75_addrconv[] =
     {
         {Tmp75Addr_Zero, Tmp75Addr_Zero, Tmp75Addr_Zero, 0x48},
         {Tmp75Addr_Zero, Tmp75Addr_Zero, Tmp75Addr_One, 0x49},
         {Tmp75Addr_Zero, Tmp75Addr_One, Tmp75Addr_Zero, 0x4A},
         {Tmp75Addr_Zero, Tmp75Addr_One, Tmp75Addr_One, 0x4B},
         {Tmp75Addr_One, Tmp75Addr_Zero, Tmp75Addr_Zero, 0x4C},
         {Tmp75Addr_One, Tmp75Addr_Zero, Tmp75Addr_One, 0x4D},
         {Tmp75Addr_One, Tmp75Addr_One, Tmp75Addr_Zero, 0x4E},
         {Tmp75Addr_One, Tmp75Addr_One, Tmp75Addr_One, 0x4F},
         {Tmp75Addr_Float, Tmp75Addr_Zero, Tmp75Addr_Zero, 0x70},
         {Tmp75Addr_Float, Tmp75Addr_Zero, Tmp75Addr_Float, 0x71},
         {Tmp75Addr_Float, Tmp75Addr_Zero, Tmp75Addr_One, 0x72},
         {Tmp75Addr_Float, Tmp75Addr_One, Tmp75Addr_Zero, 0x73},
         {Tmp75Addr_Float, Tmp75Addr_One, Tmp75Addr_Float, 0x74},
         {Tmp75Addr_Float, Tmp75Addr_One, Tmp75Addr_One, 0x75},
         {Tmp75Addr_Float, Tmp75Addr_Float, Tmp75Addr_Zero, 0x76},
         {Tmp75Addr_Float, Tmp75Addr_Float, Tmp75Addr_One, 0x77},
         {Tmp75Addr_Zero, Tmp75Addr_Float, Tmp75Addr_Zero, 0x28},
         {Tmp75Addr_Zero, Tmp75Addr_Float, Tmp75Addr_One, 0x29},
         {Tmp75Addr_One, Tmp75Addr_Float, Tmp75Addr_Zero, 0x2A},
         {Tmp75Addr_One, Tmp75Addr_Float, Tmp75Addr_One, 0x2B},
         {Tmp75Addr_Zero, Tmp75Addr_Zero, Tmp75Addr_Float, 0x2C},
         {Tmp75Addr_Zero, Tmp75Addr_One, Tmp75Addr_Float, 0x2D},
         {Tmp75Addr_One, Tmp75Addr_Zero, Tmp75Addr_Float, 0x2E},
         {Tmp75Addr_One, Tmp75Addr_One, Tmp75Addr_Float, 0x2F},
         {Tmp75Addr_Zero, Tmp75Addr_Float, Tmp75Addr_Float, 0x35},
         {Tmp75Addr_One, Tmp75Addr_Float, Tmp75Addr_Float, 0x36},
         {Tmp75Addr_Float, Tmp75Addr_Float, Tmp75Addr_Float, 0x37},
         {Tmp75Addr_Zero, Tmp75Addr_Zero, Tmp75Addr_Zero, 0x48},
         {Tmp75Addr_Zero, Tmp75Addr_Zero, Tmp75Addr_One, 0x49},
         {Tmp75Addr_Zero, Tmp75Addr_One, Tmp75Addr_Zero, 0x4A},
         {Tmp75Addr_Zero, Tmp75Addr_One, Tmp75Addr_One, 0x4B},
         {Tmp75Addr_One, Tmp75Addr_Zero, Tmp75Addr_Zero, 0x4C},
         {Tmp75Addr_One, Tmp75Addr_Zero, Tmp75Addr_One, 0x4D},
         {Tmp75Addr_One, Tmp75Addr_One, Tmp75Addr_Zero, 0x4E},
         {Tmp75Addr_One, Tmp75Addr_One, Tmp75Addr_One, 0x4F}
     };
     
     int i;
     
     for (i = 0; i<(sizeof(Lm75_addrconv) / sizeof(Lm75_addrconv[0])); i++)
     {
         if ( (Lm75_addrconv[i].a0 == a0) &
                 (Lm75_addrconv[i].a1 == a1) &
                (Lm75_addrconv[i].a2 == a2) ) return Lm75_addrconv[i].SlaveAddress;
     }
     printf("Address Not Found \r\n");
     return 0xff;
     
     
 }
 
 /**
   * @brief  Init TMP75  
   * @param  hi2c: pointer to I2C handle
     * @param  adr: Slave address
     * @param  cfg: configuration register
   * @retval None
   */
 HAL_StatusTypeDef Tmp75_Init(I2C_HandleTypeDef *hi2c, uint8_t adr, 
 Tmp75_regconf_t cfg) {
                                                              
   uint16_t regval = cfg.r << 8;
     return Tmp75_Write_Register(hi2c, adr, TMP75_RCONF, regval);
 
 }
 
 
 static HAL_StatusTypeDef Tmp75_Write_Register(I2C_HandleTypeDef *hi2c, uint8_t adr, 
 uint8_t register_pointer, uint16_t register_value) {
 
     uint8_t data[3];
 
   data[0] = register_pointer;     // Register address
     data[1] = register_value >> 8;  // MSB byte of 16bit data
     data[2] = register_value;       // LSB byte of 16bit data
 
     return HAL_I2C_Master_Transmit(hi2c, adr<<1, data, 3, 100);
 
 }
 
 static HAL_StatusTypeDef Tmp75_Read_Register(I2C_HandleTypeDef *hi2c, uint8_t adr, 
 uint8_t register_pointer, uint8_t* receive_buffer) {
 
     HAL_StatusTypeDef status;
     
   // first set the register pointer to the register wanted to be read
     status = HAL_I2C_Master_Transmit(hi2c, adr<<1, &register_pointer, 1, 100);
   
     // receive the 2 x 8bit data into the receive buffer
     status |= HAL_I2C_Master_Receive(hi2c, adr<<1 | 0x01, receive_buffer, 2, 100);
     return status;
     
 }
                             
 HAL_StatusTypeDef Tmp75_Read_Teperature(I2C_HandleTypeDef *hi2c, uint8_t adr, 
 float* temperature) {
     HAL_StatusTypeDef status;
     uint8_t T_buffer[2];
     uint16_t temp;
     
     status = Tmp75_Read_Register(hi2c, adr, TMP75_RTEMP, T_buffer);
     if (status == HAL_OK)
     {
         temp = ((T_buffer[0]<<8) | T_buffer[1]) >> 4;
         *temperature = (float)temp * 0.0625f; 
     }
     
     return status;  
 }
 
 
 
 HAL_StatusTypeDef Tmp75_Read_Int_Teperature(I2C_HandleTypeDef *hi2c, uint8_t tmp75addr, 
 int32_t* temperature) 
 {
     float T;
     Tmp75_regconf_t TMP75_cfg;
     HAL_StatusTypeDef status;
     TMP75_cfg.b.R = TMP75_RESOLUTION_12BITS;
     TMP75_cfg.b.OS = 1;
     TMP75_cfg.b.F = 0;
     TMP75_cfg.b.POL = 0;
     TMP75_cfg.b.TM = 0;
     TMP75_cfg.b.SD = 0;
     
   status = Tmp75_Init(hi2c, tmp75addr, TMP75_cfg);
     if (status == HAL_OK) { 
        status = Tmp75_Read_Teperature(hi2c, tmp75addr, &T);
     }
   /////////// TEST
   /// T = -11.5;
   /////////// TEST
     *temperature = (int32_t)(T*1000);
      printf("Current tmp : %f \r\n",(float)(*temperature/1000.0));
     return status;
 }