MRI lab: FPGA controller documentation

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Control registers

Register Bits Function device
PhaseIncrement 31:0 Frequency of generated sinewave /dev/pio_phaseIncrement
Pulse1On 31:0 Length of first pulse /dev/pio_pulse1On
Pulse1Off 31:0 Interval between first and second pulse /dev/pio_pulse1Off
Pulse2On 31:0 Length of second pulse /dev/pio_pulse2On
Pulse2On 31:0 Interval between second pulse and end of cycle /dev/pio_pulse2Off
PulseControl /dev/pio_pulse2On
ADC DMA source 5:4 00 = adc input (normal operation); 01 = adc test signal (count); 10 = test mode (DAC output); 11 = test mode (constant 0xDEADBEEF)

API