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33 * \brief LM75 sensor temperature family.
35 * \author Daniele Basile <asterix@develer.com>
41 #include "hw/hw_lm75.h"
43 #include "cfg/cfg_lm75.h"
45 #include <cfg/debug.h>
46 #include <cfg/module.h>
48 // Define logging setting (for cfg/log.h module).
49 #define LOG_LEVEL LM75_LOG_LEVEL
50 #define LOG_FORMAT LM75_LOG_FORMAT
55 #include <drv/ntc.h> // Macro and data type to manage celsius degree
57 #define SELECT_ADDRESS(addr) LM75_ADDRESS_BYTE | (addr << 1)
59 deg_t lm75_read(addr_t sens_addr)
65 i2c_start_w(SELECT_ADDRESS(sens_addr));
66 i2c_put(LM75_PAD_BYTE);
67 i2c_start_r(SELECT_ADDRESS(sens_addr));
68 i2c_recv(data, sizeof(data));
70 degree = (int16_t)data[0];
71 deci_degree = (int16_t)(((data[1] >> 7) & 1 ) * 5);
73 LOG_INFO("[%d.%d C]\n", degree, deci_degree);
75 return degree * 10 + deci_degree;