1 files changed, 31 insertions, 0 deletions
diff --git a/shared/pb/driver.c b/shared/pb/driver.c
new file mode 100644
index 0000000..6b675ca
--- /dev/null
+++ b/shared/pb/driver.c
@@ -0,0 +1,31 @@
+#include "types.h"
+#include "driver.h"
+
+__weak bool pbdrv_hook_cmd() {
+	return false;
+}
+
+__weak void pbdrv_i2c_recv(uint16_t addr, const char * buf, size_t sz) {
+	if (sz == 0) return;
+	pb_cmd_t cmd = (enum pb_cmd) buf[0];
+
+	// shift buffer pointer to only contain the puzzle bus message buf
+	buf++;
+	sz--;
+
+	// allow user to override command handler while still using this weak
+	// function
+	if (pbdrv_hook_cmd(cmd, buf, sz)) return;
+
+	switch (cmd) {
+		case PB_CMD_READ: return pbdrv_handle_read(buf, sz);
+		// case PB_CMD_WRITE: return pbdrv_handle_write(buf, sz);
+		// case PB_CMD_MAGIC: return pbdrv_handle_magic(buf, sz);
+		default: return;
+	}
+}
+
+__weak void pbdrv_i2c_send(uint16_t addr, const char * buf, size_t sz) {
+	return;
+}
+