Pico GPIOs

GPIOs used by the Scoppy firmware.

GPIO	Input/Ouput	Summary	Description
0 & 1	Output	UART TX & RX	Some diagnostic information is written to the UART including error messages if scoppy enounters an unrecoverable error
2 & 3	Input - pulled down	CH1 Voltage Range	Currently selected voltage range for channel 1
4 & 5	Input - pulled down	CH2 Voltage Range	Currently selected voltage range for channel 2
6 to 13	Input	Logic Analyzer inputs	Connect up to 8 digital sources (0V to 3.3V)
14	Output	Wi-Fi Status	Connect to an LED to see if your Pico W is using wireless to connect to the Scoppy app
15	Output	Trigger	Connect to an LED to see when a trigger is fired
22	Output	Test signal	PWM 1kHz 50% duty cycle - can be connected directly to either of the ADC inputs
26	Input	CH1 ADC input	Connect the +ve output of your analog frontend (or signal source) here. Connect the ground of the analog frontend (or signal source) to GND.
27	Input	CH2 ADC input	Connect the +ve output of your analog frontend (or signal source) here. Connect the ground of the analog frontend (or signal source) to GND.