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Adding a custom chip definition to the ATmega2560 example

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This commit is contained in:
Aaron Averill 2019-08-20 10:30:09 -04:00
parent 4c0b34029b
commit 070b364f97
1 changed files with 13 additions and 3 deletions
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16
examples/avrprog_program_mega2560.py
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@ -1,7 +1,7 @@
"""
Arduino Mega 2560 programming example, be sure you have the Mega/2560 wired up so:
Mega Ground to CircuitPython GND
Mega 5V to CircuitPythong USB or make sure the Trinket is powered by USB
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
@ -17,8 +17,18 @@ 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
atmega2560 = avrprog.Boards.ATmega2560
# 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 """