gateware: add R3.3 touch sensing support - Githubissues

apfelaudio / eurorack-pmod

A eurorack-friendly audio frontend compatible with many FPGA boards, based on the AK4619VN audio CODEC.

https://apfelaudio.com/modules/available/pmod/

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gateware: add R3.3 touch sensing support #54

Closed schnommus closed 3 months ago

schnommus commented 3 months ago

clean up the following changes and bring to master:

gateware/i2c_master: support builds with + without touch scanning
gateware/cal: forward touch0-7 over debug uart to cal tool for debugging
cores/touch_cv: add a simple example of controlling CV outputs with touch

example build:

make BOARD=icebreaker CORE=touch_cv HW_REV=HW_R33 TOUCH=TOUCH_SENSE_ENABLED prog

users should build with TOUCH=TOUCH_SENSE_ENABLED otherwise the interface will wire all touch sense lines to zero