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comparison dac.pio @ 25:6070d2e66b4c

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Cascade IRQs from DAC to control so manual & external trigger are the same.
author Daniel O'Connor <darius@dons.net.au>
date Tue, 25 Feb 2025 16:53:32 +1030
parents 9ad0dd5c638c
children e1d8fe3e418a
comparison
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24:c7845db23ab2 25:6070d2e66b4c
1 ; 1 ;
2 ; Copyright (c) 2025 Daniel O'Connor 2 ; Copyright (c) 2025 Daniel O'Connor
3 ; 3 ;
4 4
5 .program dac 5 .program dac
6 .define TRIGGER_IRQ 0 6 .define DAC_IRQ 0
7 .define DAC_TRIGGER_IRQ 0
8 .define CTRL_TRIGGER_IRQ 1
7 ; Need 1 side set pin, the clock 9 ; Need 1 side set pin, the clock
8 .side_set 1 10 .side_set 1
9 11
10 ; Clock in a 0 byte 12 ; Clock in a 0 byte
11 mov pins, null side 0 13 mov pins, null side 0
12 nop side 1 14 nop side 1
13 ; Wait for start trigger and clear IRQ 15 ; Wait for start trigger and clear IRQ
14 wait 1 irq TRIGGER_IRQ side 0 16 wait 1 irq DAC_TRIGGER_IRQ side 0
17 ; Trigger the control SM
18 irq nowait CTRL_TRIGGER_IRQ side 0
15 ; Clock DAC and write data from the FIFO 19 ; Clock DAC and write data from the FIFO
16 ; DAC clocks data in on the rising clock edge 20 ; DAC clocks data in on the rising clock edge
17 .wrap_target 21 .wrap_target
18 out pins 8 side 0 22 out pins 8 side 0
19 nop side 1 23 nop side 1