Onboard neopixel led support

1 files changed, 22 insertions, 0 deletions

diff --git a/src/neopix.h b/src/neopix.h
new file mode 100644
index 0000000..8b01038
--- /dev/null
+++ b/src/neopix.h
@@ -0,0 +1,22 @@
+#include "hardware/pio.h"
+#include "hardware/gpio.h"
+
+struct neopix {
+	PIO pio;
+	uint sm;
+	uint pin;
+};
+
+void neopix_init(struct neopix *pix, PIO pio, uint sm, uint pin);
+void neopix_put(struct neopix *pix, uint32_t rgb);
+
+inline uint32_t
+neopix_u32rgb(uint8_t r, uint8_t g, uint8_t b) {
+	uint32_t rgb;
+
+	rgb = ((uint32_t) r) << 8;
+	rgb |= ((uint32_t) g) << 16;
+	rgb |= ((uint32_t) b) << 0;
+
+	return rgb;
+}