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comparison dac.pio @ 10:98880b18bcc1

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Reset DAC PIO and use force trigger to do manual trigger.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 24 Feb 2025 12:12:09 +1030
parents 3acdebd7eec7
children f1e44afb41a3
comparison
equal deleted inserted replaced
9:3acdebd7eec7 10:98880b18bcc1
4 4
5 .program dac 5 .program dac
6 .define TRIGGER_IRQ 0 6 .define TRIGGER_IRQ 0
7 ; Need 1 side set pin, the clock 7 ; Need 1 side set pin, the clock
8 .side_set 1 8 .side_set 1
9 ; Force load at address 0 so DMA handler can force a jump
10 ; presumably we could calculate the address but this is easier.
11 .origin 0
12 9
13 ; Clock in a 0 byte 10 ; Clock in a 0 byte
14 ; mov pins, null side 0 11 mov pins, null side 0
15 ; nop side 1 12 nop side 1
16 ; Wait for start trigger 13 ; Wait for start trigger and clear IRQ
17 ; wait 1 irq TRIGGER_IRQ side 0 14 wait 1 irq TRIGGER_IRQ side 0
18 ; Clock DAC and write data from the FIFO 15 ; Clock DAC and write data from the FIFO
19 ; DAC clocks data in on the rising clock edge 16 ; DAC clocks data in on the rising clock edge
20 ; Autopull is enabled so no need to pull 17 ; Autopull is enabled so no need to pull
21 .wrap_target 18 .wrap_target
22 out pins 8 side 0 19 out pins 8 side 0