varpa: initial public commit

1 files changed, 35 insertions, 0 deletions

diff --git a/firmware/inc/peripheral/twi.h b/firmware/inc/peripheral/twi.h
new file mode 100644
index 0000000..8f08777
--- /dev/null
+++ b/firmware/inc/peripheral/twi.h
@@ -0,0 +1,35 @@
+/**
+ * 
+ * Author: Dylan Muller
+ * Copyright (c) 2025 
+ * All rights reserved.
+ * 
+ * - Commercial/IP use prohibited.
+ * - Attribution required.
+ * See License.txt
+ *
+ */
+
+#ifndef TWI_H_
+#define TWI_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define TWI_ADDRESS_W(x)    (((x) << 1) & ~0x01)
+#define TWI_ADDRESS_R(x)    (((x) << 1) | 0x01)
+
+void twi_init(void);
+
+bool twi_busy(void);
+
+void twi_flush(void);
+
+void twi_start(
+    uint8_t address,
+    uint8_t *data,
+    size_t len
+);
+
+#endif