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29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
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)
58 #define LM75_ADDRESS_BYTE 0x91
59 #define LM75_PAD_BYTE 0x0
62 #if !CONFIG_I2C_DISABLE_OLD_API
64 deg_t lm75_read_1(uint8_t sens_addr)
70 if( !(i2c_start_w(SELECT_ADDRESS(sens_addr))
71 && i2c_put(LM75_PAD_BYTE)
72 && i2c_start_r(SELECT_ADDRESS(sens_addr))) )
78 if ( !i2c_recv(data, sizeof(data)) )
85 degree = (int16_t)data[0];
86 deci_degree = (int16_t)(((data[1] >> 7) & 1 ) * 5);
88 LOG_INFO("[%d.%d C]\n", degree, deci_degree);
90 return degree * 10 + deci_degree;
93 void lm75_init_0(void)
99 #endif /* !CONFIG_I2C_DISABLE_OLD_API */
105 deg_t lm75_read_2(I2c *i2c, uint8_t sens_addr)
111 i2c_start_w(i2c, SELECT_ADDRESS(sens_addr), 1, I2C_NOSTOP);
112 i2c_putc(i2c, LM75_PAD_BYTE);
113 i2c_start_r(i2c, SELECT_ADDRESS(sens_addr), sizeof(data), I2C_STOP);
114 i2c_read(i2c, data, sizeof(data));
119 degree = (int16_t)data[0];
120 deci_degree = (int16_t)(((data[1] >> 7) & 1 ) * 5);
122 LOG_INFO("[%d.%d C]\n", degree, deci_degree);
124 return degree * 10 + deci_degree;
127 void lm75_init_1(I2c *i2c)