Add support for Cynthion r0.6, r0.7, r1.0, r1.1, r1.2 #16
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mossmann
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mndza
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Jun 20, 2023
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There is an external pull-up starting in Cynthion r0.6. The internal pull-up could cause problems starting in Cynthion r0.7.
Spurious interrupts during FPGA configuration on Cynthion have convinced us to develop a more sophisticated method for the FPGA to communicate its needs to the microcontroller.
A post-0.14.0 commit of tinyusb is used in order to incorporate the recent renaming of Cynthion (from LUNA to Cynthion) and the change to a 2 KiB bootloader for Cynthion. Also rename the Apollo board from luna to cynthion to match tinyusb.
Previously we required a recursive installation of a large number of submodules, but now those dependencies are fetched on demand and are limited to those required for the target platform.
mndza
reviewed
Oct 3, 2023
If we want to use LED(s) to indicate the switch state, we should do it in a way that the existing LED usage does not override.
mossmann
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The shared USB port (CONTROL) is now handed off to the FPGA at start-up (only on r1 for now). Press the PROGRAM button to have Apollo take over the port.
LED D now indicates that Apollo is using the shared USB port.