Bongjun Hur / Mbed 2 deprecated DS18B20Sensor

Simple cpp wrapper of a ds18b20, onewire 'c' library. Supports multiple sensors.

Dependencies:   mbed

Dependents:   LPC11U68_DS18B20Sensor

Fork of DS18B20Sensor by Steve Spence

DS18X20.h@5:0bcc4e42fec0, 2014-07-04 (annotated)

Committer:
Bongjun
Date:
Fri Jul 04 00:08:44 2014 +0000
Revision:
5:0bcc4e42fec0
Parent:
0:1449f126b241 
added comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jsteve 0:1449f126b241 1 /* DS18X20 specific values (see datasheet www.maxim-ic.com/datasheet/index.mvp/id/2812) */
jsteve 0:1449f126b241 2 #ifndef _DS18X20_
jsteve 0:1449f126b241 3 #define _DS18X20_
jsteve 0:1449f126b241 4 #define DS18S20_ID 0x10
jsteve 0:1449f126b241 5 #define DS18B20_ID 0x28
jsteve 0:1449f126b241 6
jsteve 0:1449f126b241 7 #define DS18X20_POWER_PARASITE 0x00
jsteve 0:1449f126b241 8 #define DS18X20_POWER_EXTERN 0x01
jsteve 0:1449f126b241 9 #define DS18X20_CONVERT_T 0x44
jsteve 0:1449f126b241 10 #define DS18X20_READ 0xBE
jsteve 0:1449f126b241 11 #define DS18X20_WRITE 0x4E
jsteve 0:1449f126b241 12 #define DS18X20_EE_WRITE 0x48
jsteve 0:1449f126b241 13 #define DS18X20_EE_RECALL 0xB8
jsteve 0:1449f126b241 14 #define DS18X20_READ_POWER_SUPPLY 0xB4
jsteve 0:1449f126b241 15
jsteve 0:1449f126b241 16 #define DS18X20_OK 0x00
jsteve 0:1449f126b241 17 #define DS18X20_ERROR 0x01
jsteve 0:1449f126b241 18 #define DS18X20_START_FAIL 0x02
jsteve 0:1449f126b241 19 #define DS18X20_ERROR_CRC 0x03
jsteve 0:1449f126b241 20
jsteve 0:1449f126b241 21 #define DS18B20_CONF_REG 4
jsteve 0:1449f126b241 22 #define DS18B20_9_BIT 0
jsteve 0:1449f126b241 23 #define DS18B20_10_BIT (1<<5)
jsteve 0:1449f126b241 24 #define DS18B20_11_BIT (1<<6)
jsteve 0:1449f126b241 25 #define DS18B20_12_BIT ((1<<6)|(1<<5))
jsteve 0:1449f126b241 26
jsteve 0:1449f126b241 27 // indefined bits in LSB if 18B20 != 12bit
jsteve 0:1449f126b241 28 #define DS18B20_9_BIT_UNDF ((1<<0)|(1<<1)|(1<<2))
jsteve 0:1449f126b241 29 #define DS18B20_10_BIT_UNDF ((1<<0)|(1<<1))
jsteve 0:1449f126b241 30 #define DS18B20_11_BIT_UNDF ((1<<0))
jsteve 0:1449f126b241 31 #define DS18B20_12_BIT_UNDF 0
jsteve 0:1449f126b241 32
jsteve 0:1449f126b241 33 // conversion times in ms
jsteve 0:1449f126b241 34 #define DS18B20_TCONV_12BIT 750
jsteve 0:1449f126b241 35 #define DS18B20_TCONV_11BIT DS18B20_TCONV_12_BIT/2
jsteve 0:1449f126b241 36 #define DS18B20_TCONV_10BIT DS18B20_TCONV_12_BIT/4
jsteve 0:1449f126b241 37 #define DS18B20_TCONV_9BIT DS18B20_TCONV_12_BIT/8
jsteve 0:1449f126b241 38 #define DS18S20_TCONV DS18B20_TCONV_12_BIT
jsteve 0:1449f126b241 39
jsteve 0:1449f126b241 40 // constant to convert the fraction bits to cel*(10^-4)
jsteve 0:1449f126b241 41 #define DS18X20_FRACCONV 625
jsteve 0:1449f126b241 42
jsteve 0:1449f126b241 43 #define DS18X20_SP_SIZE 9
jsteve 0:1449f126b241 44
jsteve 0:1449f126b241 45 // DS18X20 EEPROM-Support
jsteve 0:1449f126b241 46 #define DS18X20_WRITE_SCRATCHPAD 0x4E
jsteve 0:1449f126b241 47 #define DS18X20_COPY_SCRATCHPAD 0x48
jsteve 0:1449f126b241 48 #define DS18X20_RECALL_E2 0xB8
jsteve 0:1449f126b241 49 #define DS18X20_COPYSP_DELAY 10 /* ms */
jsteve 0:1449f126b241 50 #define DS18X20_TH_REG 2
jsteve 0:1449f126b241 51 #define DS18X20_TL_REG 3
jsteve 0:1449f126b241 52
jsteve 0:1449f126b241 53 uint8_t DS18X20_get_power_status(uint8_t id[]);
jsteve 0:1449f126b241 54 uint8_t DS18X20_start_meas( uint8_t with_external, uint8_t id[]);
jsteve 0:1449f126b241 55 uint8_t DS18X20_read_meas(uint8_t id[], uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits);
jsteve 0:1449f126b241 56 uint8_t DS18X20_read_meas_single(uint8_t familycode, uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits);
jsteve 0:1449f126b241 57 uint8_t DS18X20_meas_to_cel( uint8_t fc, uint8_t *sp, uint8_t* subzero, uint8_t* cel, uint8_t* cel_frac_bits);
jsteve 0:1449f126b241 58 uint16_t DS18X20_temp_to_decicel(uint8_t subzero, uint8_t cel, uint8_t cel_frac_bits);
jsteve 0:1449f126b241 59 int8_t DS18X20_temp_cmp(uint8_t subzero1, uint16_t cel1, uint8_t subzero2, uint16_t cel2);
jsteve 0:1449f126b241 60 #endif