OWP_DG_1w-adaptor.ino File Reference

Example-Code for Adaptor Device to connect Dallas/Maxim DS2438 and DS18x20 1wire Slaves. More...

#include <OneWire.h>
#include <DS2438.h>
#include <PJON.h>

Macros
#define	SENSOR   "owp:1w:v1"
#define	OWPJONID   42
#define	OWPJONPIN   4
#define	ONE_WIRE_PIN   2
#define	_LED_BUILTIN   8
#define	READ_INFO   0x01
#define	READ_VCC   0x11
#define	READ_TEMP   0x12
#define	READ   0x21
#define	WRITE   0x22
#define	WRITE_CAL   0x32
#define	READ_DS2438_TEMP   0x41
#define	READ_DS2438_CHA   0x42
#define	READ_DS2438_CHB   0x43
#define	READ_DS18x20_TEMP   0x44
#define	READ_DS2438_ROM   0x4A
#define	READ_DS18x20_ROM   0x4B

Functions
OneWire	ow (ONE_WIRE_PIN)
PJON< SoftwareBitBang >	bus (OWPJONID)
bool	discoverOneWireDevices (const OneWire &ds, const uint8_t family=NULL)
void	setup ()
void	receiver_function (uint8_t *payload, uint16_t length, const PJON_Packet_Info &packet_info)
void	loop ()
float	readVcc ()
float	readTemp (void)
float	readDS18x20 (const OneWire ds, const byte addr[])

Variables
uint8_t	mem_buffer [256]
byte	addr [8]
bool	DS2438_ENABLE = false
byte	DS2438_addr [8]
bool	DS18x20_ENABLE = false
byte	DS18x20_addr [8]
DS2438 ds2438 &	ow

Detailed Description

Example-Code for Adaptor Device to connect Dallas/Maxim DS2438 and DS18x20 1wire Slaves.

Author

drtrigon

Date

2018-08-02

Version

1.0

• first version derived from OWPJON/ARDUINO/Local/SoftwareBitBang/DeviceGeneric/DeviceGeneric.ino using Arduino OneWire docu and DS2438 Arduino OneWire Library

OWPJON/ARDUINO/Local/SoftwareBitBang/DeviceGeneric/DeviceGeneric.ino

See Also

https://playground.arduino.cc/Learning/OneWire

https://github.com/jbechter/arduino-onewire-DS2438/blob/master/examples/DS2438TemperatureAndVoltage/DS2438TemperatureAndVoltage.ino

https://cdn.shopify.com/s/files/1/0164/3524/files/MultiSensor_Manual_v1.5.pdf?15845834050373852166

* OneWire PJON Generic "OWPG" scheme:
*   @ref OWPJON/LINUX/Local/LocalUDP/RemoteWorker/DeviceGeneric/DeviceGeneric.cpp
*
* Compatible with: atmega328 (Uno, Nano), atmega32u4 (Yun)
*   ID 42: Nano Test Device on outdoor SWBB bus (testing)
*
* Pinout (Uno, Nano):
*   1wire PJON data bus (OWPJON SWBB):
*        1WIRE DATA    -> Arduino Pin D12
*        GND black     -> Arduino GND
*   1wire Dallas/Maxim data bus (MicroLAN):
*        1WIRE DATA    -> Arduino Pin D2
*   A 4.7k pull-up resistor must be connected to the 1-wire bus (Pin D2).
*   Needs a weak pull-up (that the uP cannot provide).
*
* Example sending READ_DS... commands to device id 42:
* $ printf "\x4A" | ./owpshell - - 42 | ../../../ThroughSerial/RemoteWorker/DeviceGeneric/unpack.py BBBBBBBB
* 38, 0, 0, 215, 1, 0, 0, 77
* $ printf "\x4B" | ./owpshell - - 42 | ../../../ThroughSerial/RemoteWorker/DeviceGeneric/unpack.py BBBBBBBB
* 40, 66, 243, 63, 5, 0, 0, 10
* $ printf "\x41" | ./owpshell - - 42 | ../../../ThroughSerial/RemoteWorker/DeviceGeneric/unpack.py f
* 23.03125,
* $ printf "\x42" | ./owpshell - - 42 | ../../../ThroughSerial/RemoteWorker/DeviceGeneric/unpack.py f
* 1.690000057220459,
* $ printf "\x43" | ./owpshell - - 42 | ../../../ThroughSerial/RemoteWorker/DeviceGeneric/unpack.py f
* 4.590000152587891,
* $ printf "\x44" | ./owpshell - - 42 | ../../../ThroughSerial/RemoteWorker/DeviceGeneric/unpack.py f
* 27.125,
* More info can be found in @ref OWPJON/README.md. Confer also the docu of
* following files for info about tests on Ubuntu or Raspberry Pi Server (owpshell):
*   - @ref OWPJON/LINUX/Local/LocalUDP/RemoteWorker/DeviceGeneric/DeviceGeneric.cpp
*   - @ref OWPJON/LINUX/Local/ThroughSerial/RemoteWorker/DeviceGeneric/DeviceGeneric.cpp
*
* Using on (minimal/raw) atmega328 w. 16MHz oscil.
*   use Uno with ArduinoISP Example and "Arduino as ISP"
*   connect (like attiny85) for ISP (SPI) programming, see e.g.
*     http://www.gammon.com.au/breadboard
*     https://github.com/nickgammon/arduino_sketches
*     (for debugging see "Chip not detected", "Alternate clock source")
*   select "Arduino/Genuino Uno" board and Tools > Burn Bootloader
*   then compile and upload sketch with (Upload button doesn't work)
*     Sketch > Upload Using Programmer
*
* Thanks to:
* gioblu - PJON 11.0 and support
*          @see https://www.pjon.org/
*          @see https://github.com/gioblu/PJON
* fredilarsen - support
* 

Macro Definition Documentation

#define _LED_BUILTIN   8

#define ONE_WIRE_PIN   2

#define OWPJONID   42

#define OWPJONPIN   4

#define READ   0x21

#define READ_DS18x20_ROM   0x4B

#define READ_DS18x20_TEMP   0x44

#define READ_DS2438_CHA   0x42

#define READ_DS2438_CHB   0x43

#define READ_DS2438_ROM   0x4A

#define READ_DS2438_TEMP   0x41

#define READ_INFO   0x01

#define READ_TEMP   0x12

#define READ_VCC   0x11

#define SENSOR   "owp:1w:v1"

#define WRITE   0x22

#define WRITE_CAL   0x32

Function Documentation

PJON<SoftwareBitBang> bus

(

OWPJONID

)

bool discoverOneWireDevices	(	const OneWire &	ds,
		const uint8_t	family = NULL
	)

void loop

(

void

)

OneWirePJON device status update function.

Returns

(void)

OneWire ow

(

ONE_WIRE_PIN

)

float readDS18x20	(	const OneWire	ds,
		const byte	addr[]
	)

float readTemp

(

void

)

Internal Temperature Sensor for ATmega328 types.

Parameters

void

See Also

receiver_function()

https://playground.arduino.cc/Main/InternalTemperatureSensor

Returns

The chip temperature in [°C]

float readVcc

(

)

Accessing the secret voltmeter on the Arduino 168 or 328.

See Also

receiver_function()

http://code.google.com/p/tinkerit/wiki/SecretVoltmeter

Returns

The supply voltage in [V]

void receiver_function	(	uint8_t *	payload,
		uint16_t	length,
		const PJON_Packet_Info &	packet_info
	)

void setup

(

void

)

Arduino IDE: put your setup code here, to run once.

Variable Documentation

byte addr[8]

byte DS18x20_addr[8]

bool DS18x20_ENABLE = false

byte DS2438_addr[8]

bool DS2438_ENABLE = false

uint8_t mem_buffer[256]

DS2438 ds2438& ow