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comparison trigger.pio @ 24:c7845db23ab2

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Add sideset for trigger output. Trigger both SMs
author Daniel O'Connor <darius@dons.net.au>
date Tue, 25 Feb 2025 16:47:00 +1030
parents 283955273884
children 6070d2e66b4c
comparison
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23:3c713073dd0c 24:c7845db23ab2
1 ; 1 ;
2 ; Copyright (c) 2025 Daniel O'Connor 2 ; Copyright (c) 2025 Daniel O'Connor
3 ; 3 ;
4 4
5 .program trigger 5 .program trigger
6 .define TRIGGER_IRQ 0 6 .define DAC_TRIGGER_IRQ 0
7 .define CTRL_TRIGGER_IRQ 1
8 ; Use 1 side set pin for debugging
9 .side_set 1
7 10
8 .wrap_target 11 .wrap_target
9 ; Wait for trigger to be low 12 ; Wait for trigger to be low
10 wait 0 pin 0 13 wait 0 pin 0 side 0
11 ; Wait for rising edge 14 ; Wait for rising edge
12 wait 1 pin 0 15 wait 1 pin 0 side 0
13 ; Signal other state machine 16 ; Signal other state machines
14 irq nowait TRIGGER_IRQ 17 irq nowait DAC_TRIGGER_IRQ side 1
18 irq nowait CTRL_TRIGGER_IRQ side 1
15 .wrap 19 .wrap
16 20
17 % c-sdk { 21 % c-sdk {
18 static inline void trigger_program_init(PIO pio, uint sm, uint offset, uint pin, uint clkdiv) { 22 static inline void trigger_program_init(PIO pio, uint sm, uint offset, uint pin, uint clkdiv) {
19 pio_sm_config c = trigger_program_get_default_config(offset); 23 pio_sm_config c = trigger_program_get_default_config(offset);
23 // Set to input 27 // Set to input
24 pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false); 28 pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false);
25 // Connect this GPIO to this PIO block 29 // Connect this GPIO to this PIO block
26 pio_gpio_init(pio, pin); 30 pio_gpio_init(pio, pin);
27 31
32 // Configure side pin mapping to point to debug pin
33 sm_config_set_sideset_pins(&c, pin + 1);
34 // Set to output
35 pio_sm_set_consecutive_pindirs(pio, sm, pin + 1, 1, true);
36 // Connect this GPIO to this PIO block
37 pio_gpio_init(pio, pin + 1);
38
28 sm_config_set_clkdiv(&c, clkdiv); 39 sm_config_set_clkdiv(&c, clkdiv);
29 40
30 // Load our configuration, and start the program from the beginning 41 // Load our configuration, and start the program from the beginning
31 pio_sm_init(pio, sm, offset, &c); 42 pio_sm_init(pio, sm, offset, &c);
32 pio_sm_set_enabled(pio, sm, true); 43 pio_sm_set_enabled(pio, sm, true);