ash/Pi-Pico-ExpressionPedal2Midi
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Ashley Strahle
2021-01-30 18:24:48 +10:00
parent 1e6a74e825
commit a45a9dbf43
1 changed files with 3 additions and 23 deletions
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26
main.py
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@@ -11,9 +11,7 @@ exp = machine.ADC(Pin(26)) # Expression pedal device on pin 31
uart = machine.UART(1, 31250) # UART Midi device on pin 6 uart = machine.UART(1, 31250) # UART Midi device on pin 6
led = machine.Pin(25, Pin.OUT) # Pico onboard led led = machine.Pin(25, Pin.OUT) # Pico onboard led
# Expression pedal settings # Expression pedal maximum and minimum
# exp_min = 352 # Expression pedal minimum value
#exp_max = 65535 #Expression pedal maximum value
# Set these to reverse thresholds # Set these to reverse thresholds
exp_min = 65535 exp_min = 65535
exp_max = 0 exp_max = 0
@@ -42,29 +40,11 @@ while True:
elif exp_current < exp_min: elif exp_current < exp_min:
exp_min = exp_current exp_min = exp_current
if exp_current != exp_previous: if exp_current != exp_previous and exp_max - exp_min > 40000:
led.value(1) # Turn led on led.value(1) # Turn led on
cc_val = translate(exp_current) cc_val = translate(exp_current)
uart.write(ustruct.pack("bbb",ControlChange + midi_channel - 1,cc,cc_val)) uart.write(ustruct.pack("bbb",ControlChange + midi_channel - 1,cc,cc_val))
led.value(0) # Turn led off led.value(0) # Turn led off
exp_previous = exp_current exp_previous = exp_current
print("Writing Midi Channel: {}, ControlChange: {}, Value {}. Exp Pedal: cur: {}, min: {}, max: {}".format(midi_channel, cc, cc_val, exp_current, exp_min, exp_max)) print("Writing Midi Channel: {}, ControlChange: {}, Value {}. Exp Pedal: cur: {}, min: {}, max: {}".format(midi_channel, cc, cc_val, exp_current, exp_min, exp_max))
time.sleep(0.05)
# max = 0
# min = 66000
# while True:
# exp_current = exp.read_u16()
# if exp_current > max:
# max = exp_current
# if exp_current < min:
# min = exp_current
# print ("Current value: {}, min: {}, max: {}".format(exp_current, min, max))
# time.sleep(0.1)
# while True:
# for i in range(97):
# led.value(1)
# uart.write(ustruct.pack("bbb",ControlChange + midi_channel - 1,cc,i))
# print("Writing CC value " + str(i))
# led.value(0)
# time.sleep(0.1)