Author | Jean Marchaudon, Copyright © 2010..2010, all rights reserved. |
Adapted-by | And-Tech.pl, Bert van Dam, Jean Marchaudon, Olivier Seit, |
Compiler | >=2.4m |
1 wire routines for the DS18b20 temperature probe Read sensor temperature DS18b20 from a specific device using the drive's ID use _s_ procedures when there is only one device on the bus. use _m_ procedures when there is more than one device on the bus.
ds18b20 datasheet (http://datasheets.maxim-ic.com/en/ds/DS18B20.pdf)
requires 1_wire.jal
No dependency found
ds18b20_m_convert(byte in id[])
ds18b20_convert()
ds18b20_setup(sbyte in th, sbyte in tl, byte in resolution)
ds18b20_m_temp(byte in id[], sword out temperature) return bit
ds18b20_s_read_rom() return bit
ds18b20_s_temp(sword out temperature) return bit
var byte scratchpad[9]
No documentation found
ds18b20_m_convert(byte in id[])
ds18b20_m_convert - start conversion of a specific devices on the bus. Parameter: 8-byte ID of device to operate on
ds18b20_convert()
ds18b20_convert - start conversion of all devices on the bus. This is actually like an _s_ procedure. When it is executed on a bus with multiple ds18b20 devices, all will start conversion.
ds18b20_setup(sbyte in th, sbyte in tl, byte in resolution)
ds18b20_setup -- !!! UNTESTED !!! ***** YOU DON'T NEED THIS FUNCTION FOR TEMPERATURE ***** ***** READING WITH 12 BIT (DEFAULT) RESOLUTION ***** *** PLEASE REPORT IF YOU TESTED THIS FUNCTION (PARTLY OR FULL) *** resolution can be 9, 10, 11, 12 TL = minimum -55 TH = maximum 124
_ds18b20_skip_rom()
_ds18b20_skip_rom - activate all devices on the bus Note: not sure if 'all devices' means all ds18b20 devices or all one_wire devices. I guess this is beyond the scope of this library though ;)
_ds18b20_match_rom(byte in id[])
_ds18b20_match_rom - activate specified device Parameter: 8-byte ID of device to operate on
ds18b20_m_temp(byte in id[], sword out temperature) return bit
ds18b20_m_temp - read temperature from single device on bus Use this procedure when there is more than one device on the one_wire bus. behavior of this procedure (retry, converions) is influenced by constants, see lib header. return: true if success (crc okay).
ds18b20_s_read_rom() return bit
ds18b20_s_read_rom - read ID from single device on bus Only use this procedure when there is only one device on the one_wire bus. result is 8-byte ID in the scratchpad area return: true if success (crc okay).
ds18b20_s_temp(sword out temperature) return bit
ds18b20_s_temp - read temperature from single device on bus Only use this procedure when there is only one device on the one_wire bus. behavior of this procedure (retry, converions) is influenced by constants, see lib header. return: true if success (crc okay).
_ds18b20_read( byte in nbre_byte ) return bit
_ds18b20_read - read the requested number of bytes The result is stored in scratchpad for further processiong. crc of received data is calculated. parameter: nbre_byte: 8 when you read rom ID 9 when you read the scratchpad return: true if success (crc okay).
16f648a | 16f648a_ds18b20_single.jal |
16f877 | 16f877_ds18b20_single.jal |
16f877a | 16f877a_ds18b20_single.jal |
16f88 | 16f88_ds18b20_single.jal |
18f2450 | 18f2450_ds18b20_single.jal |
18f2585 | 18f2585_1wire_ds1820.jal |
18f452 | 18f452_ds18b20_single.jal |
18f4550 | 18f4550_ds18b20_single.jal |