EPICS support for Measurement Computing Corporation daq hats for Raspberry Pi

vendor of hats:

• Measurement Computing Corporation https://www.mccdaq.com/
• now Digilent (part of Emerson) https://digilent.com/

possible types:

• MCC118: 8-ch 12-bit 100kS/s analog input, single ended -10V…+10V common clock input/output, common trigger input
• MCC128: 8-ch 16-bit 100kS/s analog input, single ended or 4-ch 16-bit 100kS/s analog input, differential -10V…+10V, -5V…+5V, -2V…+2V, -1V…+1V common clock input/output, common trigger input
• MCC134: 4-ch 24-bit thermocouple input
• MCC152: 2-ch 12-bit analog output 0V…5V 8-ch bit-configureable digital I/O
• MCC172: 2-ch 24-bit 51.2kS/s analog input, differential -5V…+5V common trigger input

some types might blink the status LED (118,128,152,172)

required Github library https://github.com/mccdaq/daqhats

required EPICS https://epics-controls.org/

• base https://github.com/epics-base/epics-base
• asyn https://github.com/epics-modules/asyn