Simple test

Ensure your device works with this simple test.

examples/avrprog_read_signature_simpletest.py
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# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

"""
Read Signature Test - All this does is read the signature from the chip to
check connectivity!
"""

import board
import busio
import pwmio
import adafruit_avrprog

spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
avrprog = adafruit_avrprog.AVRprog()
avrprog.init(spi, board.D5)

# pylint: disable-msg=no-member
# we can generate an 6 MHz clock for driving bare chips too!
clock_pwm = pwmio.PWMOut(board.D9, frequency=6000000, duty_cycle=65536 // 2)
# pylint: enable-msg=no-member

avrprog.begin()
print("Signature bytes: ", [hex(i) for i in avrprog.read_signature()])
avrprog.end()
examples/avrprog_program_trinket85.py
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# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

"""
Trinket/Gemma (ATtiny85) programming example, be sure you have the '85 wired up so:
  Trinket Ground to CircuitPython GND
  Trinket USB to CircuitPythong USB or make sure the Trinket is powered by USB
  Pin 2 -> CircuitPython SCK
  Pin 1 -> CircuitPython MISO
  Pin 0 -> CircuitPython MOSI
  RESET  -> CircuitPython D5 (or change the init() below to change it!)
Drag "trinket_boot.hex" onto the CircuitPython disk drive, then open REPL!
"""

import board
import busio
import adafruit_avrprog

spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
avrprog = adafruit_avrprog.AVRprog()
avrprog.init(spi, board.D5)

# Each chip has to have a definition so the script knows how to find it
attiny85 = avrprog.Boards.ATtiny85


def error(err):
    """ Helper to print out errors for us and then halt """
    print("ERROR: " + err)
    avrprog.end()
    while True:
        pass


while input("Ready to GO, type 'G' here to start> ") != "G":
    pass

if not avrprog.verify_sig(attiny85, verbose=True):
    error("Signature read failure")
print("Found", attiny85["name"])

avrprog.write_fuses(attiny85, low=0xF1, high=0xD5, ext=0x06, lock=0x3F)
if not avrprog.verify_fuses(attiny85, low=0xF1, high=0xD5, ext=0x06, lock=0x3F):
    error("Failure verifying fuses!")

print("Programming flash from file")
avrprog.program_file(attiny85, "trinket_boot.hex", verbose=True, verify=True)

print("Done!")
examples/avrprog_program_uno328.py
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# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

"""
UNO Optiboot programming example, be sure you have the UNO wired up so:
  UNO Ground to CircuitPython GND
  UNO 5V to CircuitPython USB or make sure the UNO is powered by USB
  UNO Pin 13 -> CircuitPython SCK
  UNO Pin 12 -> CircuitPython MISO
  UNO Pin 11 -> CircuitPython MOSI
  UNO RESET  -> CircuitPython D5 (or change the init() below to change it!)
Drag "optiboot_atmega328.hex" onto the CircuitPython disk drive, then open REPL!
"""

import board
import busio
import pwmio
import adafruit_avrprog

spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
avrprog = adafruit_avrprog.AVRprog()
avrprog.init(spi, board.D5)

# pylint: disable-msg=no-member
# we can generate an 6 MHz clock for driving bare chips too!
clock_pwm = pwmio.PWMOut(board.D9, frequency=6000000, duty_cycle=65536 // 2)
# pylint: enable-msg=no-member

# Each chip has to have a definition so the script knows how to find it
atmega328p = avrprog.Boards.ATmega328p


def error(err):
    """ Helper to print out errors for us and then halt """
    print("ERROR: " + err)
    avrprog.end()
    while True:
        pass


while input("Ready to GO, type 'G' here to start> ") != "G":
    pass

if not avrprog.verify_sig(atmega328p, verbose=True):
    error("Signature read failure")
print("Found", atmega328p["name"])

# Since we are unsetting the lock fuse, an erase is required!
avrprog.erase_chip()

avrprog.write_fuses(atmega328p, low=0xFF, high=0xDE, ext=0x05, lock=0x3F)
if not avrprog.verify_fuses(atmega328p, low=0xFF, high=0xDE, ext=0x05, lock=0x3F):
    error(
        "Failure programming fuses: "
        + str([hex(i) for i in avrprog.read_fuses(atmega328p)])
    )

print("Programming flash from file")
avrprog.program_file(atmega328p, "optiboot_atmega328.hex", verbose=True, verify=True)

avrprog.write_fuses(atmega328p, lock=0x0F)
if not avrprog.verify_fuses(atmega328p, lock=0x0F):
    error("Failure verifying fuses!")

print("Done!")
examples/avrprog_program_mega2560.py
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# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

"""
Arduino Mega 2560 programming example, be sure you have the Mega/2560 wired up so:
  Mega Ground to CircuitPython GND
  Mega 5V to CircuitPython USB or make sure the Trinket is powered by USB
  Pin 52 -> CircuitPython SCK
  Pin 50 -> CircuitPython MISO  - Note this is backwards from what you expect
  Pin 51 -> CircuitPython MOSI  - Note this is backwards from what you expect
  RESET  -> CircuitPython D5 (or change the init() below to change it)
Drag "stk500boot_v2_mega2560.hex" onto the CircuitPython disk drive, then open REPL
"""

import board
import busio
import adafruit_avrprog

spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
avrprog = adafruit_avrprog.AVRprog()
avrprog.init(spi, board.D5)

# To program a chip, you'll need to find out the signature, size of the flash,
# flash-page size and fuse mask. You can find this in the datasheet or in
# avrdude.conf located at:
# http://svn.savannah.nongnu.org/viewvc/*checkout*/avrdude/trunk/avrdude/avrdude.conf.in
# You can also use the predefined values in AVRprog.Boards
atmega2560 = {
    "name": "ATmega2560",
    "sig": [0x1E, 0x98, 0x01],
    "flash_size": 262144,
    "page_size": 256,
    "fuse_mask": (0xFF, 0xFF, 0x07, 0x3F),
}


def error(err):
    """ Helper to print out errors for us and then halt """
    print("ERROR: " + err)
    avrprog.end()
    while True:
        pass


while input("Ready to GO, type 'G' here to start> ") != "G":
    pass

if not avrprog.verify_sig(atmega2560, verbose=True):
    error("Signature read failure")
print("Found", atmega2560["name"])

# Since we are unsetting the lock fuse, an erase is required!
avrprog.erase_chip()

avrprog.write_fuses(atmega2560, low=0xFF, high=0xD8, ext=0x05, lock=0x3F)
if not avrprog.verify_fuses(atmega2560, low=0xFF, high=0xD8, ext=0x05, lock=0x3F):
    error(
        "Failure programming fuses: "
        + str([hex(i) for i in avrprog.read_fuses(atmega2560)])
    )

print("Programming flash from file")
avrprog.program_file(
    atmega2560, "stk500boot_v2_mega2560.hex", verbose=True, verify=True
)

avrprog.write_fuses(atmega2560, lock=0x0F)
if not avrprog.verify_fuses(atmega2560, lock=0x0F):
    error("Failure verifying fuses!")

print("Done!")