Compatibility issue with AVR DxCore Family

[sandeepkumar0153]

Description

OneWire wont work on the new AVR Dx Series chips using board variant from SpenceKonde.

modified \Libraries\OneWire\2.3.7\OneWire\util\OneWire_direct_gpio.h

added condition in case ARDUINO_avrdb is defiend to achieve fall back mode and added following code modification.
this should work with DA series and other boards with proper condition in to fall back mode.

#if defined(ARDUINO_avrdb)
#define PIN_TO_BASEREG(pin) (0)
#define PIN_TO_BITMASK(pin) (pin)
#define IO_REG_TYPE uint8_t
#define IO_REG_BASE_ATTR
#define IO_REG_MASK_ATTR
#define DIRECT_READ(base, pin) digitalRead(pin)
#define DIRECT_WRITE_LOW(base, pin) digitalWrite(pin, LOW)
#define DIRECT_WRITE_HIGH(base, pin) digitalWrite(pin, HIGH)
#define DIRECT_MODE_INPUT(base, pin) pinMode(pin,INPUT)
#define DIRECT_MODE_OUTPUT(base, pin) pinMode(pin,OUTPUT)
#warning "OneWire. Fallback mode. Using API calls for pinMode,digitalRead and digitalWrite. Operation of this library is not guaranteed on this architecture."

#elif defined(AVR)

[nurazur]

Fallback mode did not work for me, when F_CPU clock is 4 MHz or below.
I am working on ATmega4808 and AVR dd devices.
this line works, replacing line #18 in OneWire\util\OneWire_direct_gpio.h:
#if defined(__AVR_ATmega4809__) || defined(__AVR_ATmega4808__) || defined (ARDUINO_avrdd)
Since the architecture of ATmega480x and AVR Dx is very similar, I assume this to work for AVR db series as well if you add
|| defined (ARDUINO_avrdb) to line #18

[noeldum]

Thank you nurazur. It took me hours to find why the avr32db28 did not read the ds18b20. Troubleshooting ended after reading you above.

Your comment has a tipo. So to recap for those encountering the same problem.
In line

OneWire/util/OneWire_direct_gpio.h

Line 18 in dbf2033

#if defined(__AVR_ATmega4809__)

add to the end of line:
|| defined (ARDUINO_avrdb)

[nurazur]

typo in my previous post is corrected. Sorry for the inconvenience.

[WeirdConstructor]

Also stumbled across this one today (had to add ARDUINO_avrdd to line 18).