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comparison modulator.c @ 2:0d653f60dec8

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Actually get data moving out. Previous shape info caused a hard fault.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 29 Mar 2021 17:39:00 +1030
parents a55e39064a71
children b10097c3383d
comparison
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1:b9ec45077bff 2:0d653f60dec8
21 #include "hardware/clocks.h" 21 #include "hardware/clocks.h"
22 #include "hardware/pio.h" 22 #include "hardware/pio.h"
23 23
24 #include "dac.pio.h" 24 #include "dac.pio.h"
25 25
26 #if 0
26 extern void* shaped_trap_dat_size; 27 extern void* shaped_trap_dat_size;
27 extern void* shaped_trap_dat_start; 28 extern void* shaped_trap_dat_start;
28 29
29 extern void* sgauss_dat_size; 30 extern void* sgauss_dat_size;
30 extern void* sgauss_dat_start; 31 extern void* sgauss_dat_start;
32 #endif
33
34 uint8_t shaped_trap_dat_start[] = { 0, 1, 2, 4, 8, 16, 32, 64, 128, 0, 0, 0, 0, 0, 0, 0 };
35 //uint8_t shaped_trap_dat_start[] = { 0, 1, 2, 3, 1, 2, 0, 3, 1, 1, 2, 3, 0, 1, 2, 3 };
31 36
32 int 37 int
33 main() { 38 main() {
34 int i; 39 int i;
35 const uint LED_PIN = PICO_DEFAULT_LED_PIN; 40 const uint LED_PIN = PICO_DEFAULT_LED_PIN;
42 // Load the clocked_input program, and configure a free state machine 47 // Load the clocked_input program, and configure a free state machine
43 // to run the program. 48 // to run the program.
44 PIO pio = pio0; 49 PIO pio = pio0;
45 uint offset = pio_add_program(pio, &dac_program); 50 uint offset = pio_add_program(pio, &dac_program);
46 uint sm = pio_claim_unused_sm(pio, true); 51 uint sm = pio_claim_unused_sm(pio, true);
47 dac_program_init(pio, sm, offset, 4); 52 // XXX: I would prefer starting at GPIO16 but in that case the top 2
53 // bits don't seem to work
54 dac_program_init(pio, sm, offset, 14);
48 55
49 while (true) { 56 while (true) {
50 for (i = 0; i < (int)&shaped_trap_dat_size; i++) { 57 for (int i = 0; i < sizeof(shaped_trap_dat_start) / 4; i++) {
51 if (*(uint8_t *)shaped_trap_dat_start) 58 pio_sm_put_blocking(pio, sm, ((uint32_t *)shaped_trap_dat_start)[i]);
52 gpio_put(LED_PIN, 1);
53 else
54 gpio_put(LED_PIN, 0);
55 sleep_ms(250);
56 } 59 }
57 for (i = 0; i < (int)&sgauss_dat_size; i++) { 60 #if 0
58 if (*(uint8_t *)sgauss_dat_start) 61 gpio_put(LED_PIN, 1);
59 gpio_put(LED_PIN, 1); 62 sleep_ms(100);
60 else 63 gpio_put(LED_PIN, 0);
61 gpio_put(LED_PIN, 0); 64 #endif
62 sleep_ms(250);
63 }
64 } 65 }
65 } 66 }