ruuvi_interface_i2c_tmp117.c

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#include "ruuvi_driver_enabled_modules.h"
#if RI_TMP117_ENABLED || DOXYGEN
#include "ruuvi_driver_error.h"
#include "ruuvi_interface_i2c.h"
#include "ruuvi_interface_i2c_tmp117.h"
 
#define TMP_ADDR_SIZE (1U)
#define TMP_REG_SIZE (2U)
#define TMP_TX_SIZE (TMP_ADDR_SIZE + TMP_REG_SIZE)
 
rd_status_t ri_i2c_tmp117_write (const uint8_t dev_id,
                                 const uint8_t reg_addr, const uint16_t reg_val)
{
    uint8_t command[TMP_TX_SIZE];
    command[0] = reg_addr;
    command[1] = reg_val >> 8;
    command[2] = reg_val & 0xFF;
    return ri_i2c_write_blocking (dev_id, command, TMP_TX_SIZE, true);
}
 
rd_status_t ri_i2c_tmp117_read (const uint8_t dev_id,
                                const uint8_t reg_addr,
                                uint16_t * const reg_val)
{
    rd_status_t err_code = RD_SUCCESS;
    uint8_t command[TMP_TX_SIZE] = {0};
    command[0] = reg_addr;
    err_code |= ri_i2c_write_blocking (dev_id, command, TMP_ADDR_SIZE, false);
    err_code |= ri_i2c_read_blocking (dev_id, & (command[1]), TMP_REG_SIZE);
    *reg_val = (uint16_t) (command[1] << 8U) + command[2];
    return err_code;
}
#endif