lm75.c

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#include "lm75.h"

#include "hw/hw_lm75.h"

#include "cfg/cfg_lm75.h"

#include <cfg/debug.h>
#include <cfg/module.h>

// Define logging setting (for cfg/log.h module).
#define LOG_LEVEL   LM75_LOG_LEVEL
#define LOG_FORMAT  LM75_LOG_FORMAT

#include <cfg/log.h>

#include <drv/i2c.h>
#include <drv/ntc.h> // Macro and data type to manage celsius degree

#define SELECT_ADDRESS(addr)   LM75_ADDRESS_BYTE | (addr << 1)

deg_t lm75_read(uint8_t sens_addr)
{
    uint8_t data[2];
    int16_t degree;
    int16_t deci_degree;

    i2c_start_w(SELECT_ADDRESS(sens_addr));
    i2c_put(LM75_PAD_BYTE);
    i2c_start_r(SELECT_ADDRESS(sens_addr));
    i2c_recv(data, sizeof(data));

    degree = (int16_t)data[0];
    deci_degree = (int16_t)(((data[1] >> 7) & 1 ) * 5);

    LOG_INFO("[%d.%d C]\n", degree, deci_degree);

    return degree * 10 + deci_degree;
}

void lm75_init(void)
{
    // Check dependence
    MOD_CHECK(i2c);
    LM75_HW_INIT();
}