Initial Release

pio/ws2812/generated/ws2812.pio.h

@@ -0,0 +1,112 @@
+// -------------------------------------------------- //
+// This file is autogenerated by pioasm; do not edit! //
+// -------------------------------------------------- //
+
+#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
+

pio/ws2812/generated/ws2812.py

@@ -0,0 +1,46 @@
+# -------------------------------------------------- #
+# This file is autogenerated by pioasm; do not edit! #
+# -------------------------------------------------- #
+
+import rp2
+from machine import Pin
+# ------ #
+# ws2812 #
+# ------ #
+
+ws2812_T1 = 2
+ws2812_T2 = 5
+ws2812_T3 = 3
+
+@rp2.asm_pio(sideset_init=pico.PIO.OUT_HIGH, out_init=pico.PIO.OUT_HIGH, out_shiftdir=1)
+def ws2812():
+    wrap_target()
+    label("0")
+    out(x, 1)               .side(0) [2]  # 0
+    jmp(not_x, "3")         .side(1) [1]  # 1
+    jmp("0")                .side(1) [4]  # 2
+    label("3")
+    nop()                   .side(0) [4]  # 3
+    wrap()
+
+
+
+# --------------- #
+# ws2812_parallel #
+# --------------- #
+
+ws2812_parallel_T1 = 2
+ws2812_parallel_T2 = 5
+ws2812_parallel_T3 = 3
+
+@rp2.asm_pio()
+def ws2812_parallel():
+    wrap_target()
+    out(x, 32)                            # 0
+    mov(pins, not null)              [1]  # 1
+    mov(pins, x)                     [4]  # 2
+    mov(pins, null)                  [1]  # 3
+    wrap()
+
+
+