frederic blanc / OneWireFB

OneWire DS18B20,DS2450,MAX31850

Dependents:   MAX31850_HelloWorld

DS18X20.h@0:9acbbb021a43, 2015-02-12 (annotated)

Committer:
fblanc
Date:
Thu Feb 12 14:03:55 2015 +0000
Revision:
0:9acbbb021a43
MAX31850 ok

Who changed what in which revision?

UserRevisionLine numberNew contents of line
fblanc 0:9acbbb021a43 1 /* DS18X20 specific values (see datasheet www.maxim-ic.com/datasheet/index.mvp/id/2812) */
fblanc 0:9acbbb021a43 2 #ifndef _DS18X20_
fblanc 0:9acbbb021a43 3 #define _DS18X20_
fblanc 0:9acbbb021a43 4 #define DS18S20_ID 0x10
fblanc 0:9acbbb021a43 5 #define DS18B20_ID 0x28
fblanc 0:9acbbb021a43 6
fblanc 0:9acbbb021a43 7 #define DS18X20_POWER_PARASITE 0x00
fblanc 0:9acbbb021a43 8 #define DS18X20_POWER_EXTERN 0x01
fblanc 0:9acbbb021a43 9 #define DS18X20_CONVERT_T 0x44
fblanc 0:9acbbb021a43 10 #define DS18X20_READ 0xBE
fblanc 0:9acbbb021a43 11 #define DS18X20_WRITE 0x4E
fblanc 0:9acbbb021a43 12 #define DS18X20_EE_WRITE 0x48
fblanc 0:9acbbb021a43 13 #define DS18X20_EE_RECALL 0xB8
fblanc 0:9acbbb021a43 14 #define DS18X20_READ_POWER_SUPPLY 0xB4
fblanc 0:9acbbb021a43 15
fblanc 0:9acbbb021a43 16 #define DS18X20_OK 0x00
fblanc 0:9acbbb021a43 17 #define DS18X20_ERROR 0x01
fblanc 0:9acbbb021a43 18 #define DS18X20_START_FAIL 0x02
fblanc 0:9acbbb021a43 19 #define DS18X20_ERROR_CRC 0x03
fblanc 0:9acbbb021a43 20
fblanc 0:9acbbb021a43 21 #define DS18B20_CONF_REG 4
fblanc 0:9acbbb021a43 22 #define DS18B20_9_BIT 0
fblanc 0:9acbbb021a43 23 #define DS18B20_10_BIT (1<<5)
fblanc 0:9acbbb021a43 24 #define DS18B20_11_BIT (1<<6)
fblanc 0:9acbbb021a43 25 #define DS18B20_12_BIT ((1<<6)|(1<<5))
fblanc 0:9acbbb021a43 26
fblanc 0:9acbbb021a43 27 // indefined bits in LSB if 18B20 != 12bit
fblanc 0:9acbbb021a43 28 #define DS18B20_9_BIT_UNDF ((1<<0)|(1<<1)|(1<<2))
fblanc 0:9acbbb021a43 29 #define DS18B20_10_BIT_UNDF ((1<<0)|(1<<1))
fblanc 0:9acbbb021a43 30 #define DS18B20_11_BIT_UNDF ((1<<0))
fblanc 0:9acbbb021a43 31 #define DS18B20_12_BIT_UNDF 0
fblanc 0:9acbbb021a43 32
fblanc 0:9acbbb021a43 33 // conversion times in ms
fblanc 0:9acbbb021a43 34 #define DS18B20_TCONV_12BIT 750
fblanc 0:9acbbb021a43 35 #define DS18B20_TCONV_11BIT DS18B20_TCONV_12_BIT/2
fblanc 0:9acbbb021a43 36 #define DS18B20_TCONV_10BIT DS18B20_TCONV_12_BIT/4
fblanc 0:9acbbb021a43 37 #define DS18B20_TCONV_9BIT DS18B20_TCONV_12_BIT/8
fblanc 0:9acbbb021a43 38 #define DS18S20_TCONV DS18B20_TCONV_12_BIT
fblanc 0:9acbbb021a43 39
fblanc 0:9acbbb021a43 40 // constant to convert the fraction bits to cel*(10^-4)
fblanc 0:9acbbb021a43 41 #define DS18X20_FRACCONV 625
fblanc 0:9acbbb021a43 42
fblanc 0:9acbbb021a43 43 #define DS18X20_SP_SIZE 9
fblanc 0:9acbbb021a43 44
fblanc 0:9acbbb021a43 45 // DS18X20 EEPROM-Support
fblanc 0:9acbbb021a43 46 #define DS18X20_WRITE_SCRATCHPAD 0x4E
fblanc 0:9acbbb021a43 47 #define DS18X20_COPY_SCRATCHPAD 0x48
fblanc 0:9acbbb021a43 48 #define DS18X20_RECALL_E2 0xB8
fblanc 0:9acbbb021a43 49 #define DS18X20_COPYSP_DELAY 10 /* ms */
fblanc 0:9acbbb021a43 50 #define DS18X20_TH_REG 2
fblanc 0:9acbbb021a43 51 #define DS18X20_TL_REG 3
fblanc 0:9acbbb021a43 52
fblanc 0:9acbbb021a43 53 void DS18X20_show_temp(uint8_t subzero, uint8_t cel, uint8_t cel_frac_bits,char *text);
fblanc 0:9acbbb021a43 54 float DS18X20_temp(uint8_t subzero, uint8_t cel, uint8_t cel_frac_bits);
fblanc 0:9acbbb021a43 55 uint8_t DS18X20_get_power_status(uint8_t id[]);
fblanc 0:9acbbb021a43 56 uint8_t DS18X20_get_power_status(uint8_t n,uint8_t id[]);
fblanc 0:9acbbb021a43 57 uint8_t DS18X20_start_meas( uint8_t with_external, uint8_t id[]);
fblanc 0:9acbbb021a43 58 uint8_t DS18X20_start_meas(uint8_t n, uint8_t with_external, uint8_t id[]);
fblanc 0:9acbbb021a43 59 uint8_t DS18X20_read_meas(uint8_t id[], uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits);
fblanc 0:9acbbb021a43 60 uint8_t DS18X20_read_meas(uint8_t n, uint8_t id[], uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits);
fblanc 0:9acbbb021a43 61 uint8_t DS18X20_read_meas_single(uint8_t familycode, uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits);
fblanc 0:9acbbb021a43 62 uint8_t DS18X20_meas_to_cel( uint8_t fc, uint8_t *sp, uint8_t* subzero, uint8_t* cel, uint8_t* cel_frac_bits);
fblanc 0:9acbbb021a43 63 uint8_t DS18X20_read_meas(uint8_t n,uint8_t id[], float* temperature);
fblanc 0:9acbbb021a43 64 uint16_t DS18X20_temp_to_decicel(uint8_t subzero, uint8_t cel, uint8_t cel_frac_bits);
fblanc 0:9acbbb021a43 65 int8_t DS18X20_temp_cmp(uint8_t subzero1, uint16_t cel1, uint8_t subzero2, uint16_t cel2);
fblanc 0:9acbbb021a43 66 #endif