Software files for using the Board Zero for data collection.
Sets up the transmit side of coherent CW. Illustrates how to declare a volatile variable that an interrupt can set; how to declare a hardware interrupt and attach it to an interrupt service routine.
Same things; set up to do data collection from audio output of a shortwave radio and transmit them, via a serial port, to python host code.
Text file of the histories of the CCW transmit versions.
Sets up the hardware interrupt service routine for the GPS 1 pulse per second.
Sets up the software timer interrupt that does Morse code servicing. Send rate can be set.