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diff 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
line wrap: on
line diff
--- a/dac.pio	Fri Feb 21 17:27:22 2025 +1030
+++ b/dac.pio	Mon Feb 24 12:12:09 2025 +1030
@@ -6,15 +6,12 @@
 .define TRIGGER_IRQ 0
 ; Need 1 side set pin, the clock
 .side_set 1
-; Force load at address 0 so DMA handler can force a jump
-; presumably we could calculate the address but this is easier.
-.origin 0
 
 ; Clock in a 0 byte
-;    mov pins, null side 0
-;    nop side 1
-; Wait for start trigger
-;    wait 1 irq TRIGGER_IRQ side 0
+    mov pins, null side 0
+    nop side 1
+; Wait for start trigger and clear IRQ
+    wait 1 irq TRIGGER_IRQ side 0
 ; Clock DAC and write data from the FIFO
 ; DAC clocks data in on the rising clock edge
 ; Autopull is enabled so no need to pull