In ArduinoISP.ino, add an option to enable a 4 MHz clock signal #8757
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This clock signal can be used to reprogram the fuses of an AVR that has been set wrong (ie. when an external clock has been configured but the board/chip does not have one). This is disabled by default. We check that we compile for known chips before enabling the clock generation. Maybe there is other chips that support this code.
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Hi @procsynth , ArduinoISP sketch is meant to run on all Arduinos (also the ones with ARM chips), so it would be nice to keep the sketch functionalities in sync between all the targets. The functionality is interesting and should be expanded a bit, like having a couple of options for the pin and the frequency to use, and less magic numbers 😉 |
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| #ifdef ENABLE_CLOCK_GEN | ||
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| #if defined(__AVR_ATmega328__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__) || defined(__AVR_ATmega88__) |
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ArduinoISP sketch is meant to run on all Arduinos (also the ones with ARM chips), so it would be nice to keep the sketch functionalities in sync between all the targets.
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Hi @facchinm, thanks for your reply. I did not think in the scope of the whole Arduino project. |
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Moved to arduino/arduino-examples#17 |
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added
Component: Documentation
Add an option on Uno boards to enable a 4 MHz clock signal on pin 3
This clock signal can be used to reprogram the fuses of an AVR that
has been set wrong (ie. when an external clock has been configured but
the board/chip does not have one).
This is disabled by default. We check that we compile for known chips
before enabling the clock generation. Maybe there is other chips that
support this code.