SSPA Sequencer for the attiny85 microcontroller (part of a protection board projet).
Project is pure assembly in order to maximize response time and accuracy.
This is why this ino file is empty: all the asm code is in t85_sspa_sequencer.S.
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Input:
- PB3: PTT (tx to ground).
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Outputs:
- PB2: event#1: switch on the RF relays;
- PB1: event#2: 50 milliseconds after event#1, turn on ldmos amplifier bias;
- PB0: event#3: 50 milliseconds after event#2, enable RF output from the driver.
Upon switching back to receive, these events are performed in reverse order, also spaced apart by 50ms in time.