wave: add header

2021-03-13 15:47:24 -08:00
parent 963cd1059e
commit 960c8956b2
1 changed files with 20 additions and 0 deletions
--- a/wave/wave.h
+++ b/wave/wave.h
@@ -0,0 +1,20 @@
+#pragma once
+
+struct pdmout {
+  volatile uint16_t amplitude;
+  volatile uint16_t flags;
+};
+
+#define PDMOUT_FLAG_ENABLE_pos 0
+#define PDMOUT_FLAG_ENABLE_msk (1 << PDMOUT_FLAG_ENABLE_pos)
+
+struct square {
+  volatile uint16_t period;
+  volatile uint16_t high_val;
+  volatile uint16_t low_val;
+  volatile uint16_t output_address;
+  volatile uint16_t flags;
+};
+
+#define SQUARE_FLAG_ENABLE_pos 0
+#define SQUARE_FLAG_ENABLE_msk (1 << SQUARE_FLAG_ENABLE_pos)