From 74582835da9eb25c02635fcecc7f905c820668da Mon Sep 17 00:00:00 2001
From: ebp1g21 <ebp1g21@soton.ac.uk>
Date: Sun, 14 May 2023 12:48:37 +0000
Subject: [PATCH] Upload New File
---
ws2812.pio.h | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 114 insertions(+)
create mode 100644 ws2812.pio.h
diff --git a/ws2812.pio.h b/ws2812.pio.h
new file mode 100644
index 0000000..8cbeea6
--- /dev/null
+++ b/ws2812.pio.h
@@ -0,0 +1,114 @@
+// -------------------------------------------------- //
+// This file is autogenerated by pioasm; do not edit! //
+// -------------------------------------------------- //
+
+#pragma once
+
+#if !PICO_NO_HARDWARE
+#include "hardware/pio.h"
+#endif
+
+// ------ //
+// ws2812 //
+// ------ //
+
+#define ws2812_wrap_target 0
+#define ws2812_wrap 3
+
+#define ws2812_T1 2
+#define ws2812_T2 5
+#define ws2812_T3 3
+
+static const uint16_t ws2812_program_instructions[] = {
+ // .wrap_target
+ 0x6221, // 0: out x, 1 side 0 [2]
+ 0x1123, // 1: jmp !x, 3 side 1 [1]
+ 0x1400, // 2: jmp 0 side 1 [4]
+ 0xa442, // 3: nop side 0 [4]
+ // .wrap
+};
+
+#if !PICO_NO_HARDWARE
+static const struct pio_program ws2812_program = {
+ .instructions = ws2812_program_instructions,
+ .length = 4,
+ .origin = -1,
+};
+
+static inline pio_sm_config ws2812_program_get_default_config(uint offset) {
+ pio_sm_config c = pio_get_default_sm_config();
+ sm_config_set_wrap(&c, offset + ws2812_wrap_target, offset + ws2812_wrap);
+ sm_config_set_sideset(&c, 1, false, false);
+ return c;
+}
+
+#include "hardware/clocks.h"
+static inline void ws2812_program_init(PIO pio, uint sm, uint offset, uint pin, float freq, bool rgbw) {
+ pio_gpio_init(pio, pin);
+ pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true);
+ pio_sm_config c = ws2812_program_get_default_config(offset);
+ sm_config_set_sideset_pins(&c, pin);
+ sm_config_set_out_shift(&c, false, true, rgbw ? 32 : 24);
+ sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_TX);
+ int cycles_per_bit = ws2812_T1 + ws2812_T2 + ws2812_T3;
+ float div = clock_get_hz(clk_sys) / (freq * cycles_per_bit);
+ sm_config_set_clkdiv(&c, div);
+ pio_sm_init(pio, sm, offset, &c);
+ pio_sm_set_enabled(pio, sm, true);
+}
+
+#endif
+
+// --------------- //
+// ws2812_parallel //
+// --------------- //
+
+#define ws2812_parallel_wrap_target 0
+#define ws2812_parallel_wrap 3
+
+#define ws2812_parallel_T1 2
+#define ws2812_parallel_T2 5
+#define ws2812_parallel_T3 3
+
+static const uint16_t ws2812_parallel_program_instructions[] = {
+ // .wrap_target
+ 0x6020, // 0: out x, 32
+ 0xa10b, // 1: mov pins, !null [1]
+ 0xa401, // 2: mov pins, x [4]
+ 0xa103, // 3: mov pins, null [1]
+ // .wrap
+};
+
+#if !PICO_NO_HARDWARE
+static const struct pio_program ws2812_parallel_program = {
+ .instructions = ws2812_parallel_program_instructions,
+ .length = 4,
+ .origin = -1,
+};
+
+static inline pio_sm_config ws2812_parallel_program_get_default_config(uint offset) {
+ pio_sm_config c = pio_get_default_sm_config();
+ sm_config_set_wrap(&c, offset + ws2812_parallel_wrap_target, offset + ws2812_parallel_wrap);
+ return c;
+}
+
+#include "hardware/clocks.h"
+static inline void ws2812_parallel_program_init(PIO pio, uint sm, uint offset, uint pin_base, uint pin_count, float freq) {
+ for(uint i=pin_base; i<pin_base+pin_count; i++) {
+ pio_gpio_init(pio, i);
+ }
+ pio_sm_set_consecutive_pindirs(pio, sm, pin_base, pin_count, true);
+ pio_sm_config c = ws2812_parallel_program_get_default_config(offset);
+ sm_config_set_out_shift(&c, true, true, 32);
+ sm_config_set_out_pins(&c, pin_base, pin_count);
+ sm_config_set_set_pins(&c, pin_base, pin_count);
+ sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_TX);
+ int cycles_per_bit = ws2812_parallel_T1 + ws2812_parallel_T2 + ws2812_parallel_T3;
+ float div = clock_get_hz(clk_sys) / (freq * cycles_per_bit);
+ sm_config_set_clkdiv(&c, div);
+ pio_sm_init(pio, sm, offset, &c);
+ pio_sm_set_enabled(pio, sm, true);
+}
+
+#endif
+
--
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