varpa: initial public commit

1 files changed, 54 insertions, 0 deletions

diff --git a/firmware/inc/driver/si4468.h b/firmware/inc/driver/si4468.h
new file mode 100644
index 0000000..61e72e5
--- /dev/null
+++ b/firmware/inc/driver/si4468.h
@@ -0,0 +1,54 @@
+/**
+ * 
+ * Author: Dylan Muller
+ * Copyright (c) 2025 
+ * All rights reserved.
+ * 
+ * - Commercial/IP use prohibited.
+ * - Attribution required.
+ * See License.txt
+ *
+ */
+
+#ifndef SI4468_H_
+#define SI4468_H_
+
+#include "setup.h"
+
+#include <stdint.h>
+#include <avr/io.h>
+
+#define SI4468_ID_RADIO 0xD1
+
+#define SI4468_CMD_READ_CMD_BUFF 0x44
+#define SI4468_CMD_PART_INFO 0x01
+#define SI4468_CMD_FUNC_INFO 0x10
+#define SI4468_CMD_SET_PROPERTY	0x11
+#define SI4468_CMD_IRCAL 0x17
+#define SI4468_CMD_START_TX	0x31
+#define SI4468_CMD_CHANGE_STATE	0x34
+
+#define SI4468_CTS 0xFF
+#define SI4468_GET_RESP_LEN 0x2
+
+#define SI4468_DEV_0 0
+#define SI4468_DEV_RADIO SI4468_DEV_0
+#define SI4468_DEV_0_PORT PORTB
+#define SI4468_DEV_0_DDR DDRB
+#define SI4468_DEV_0_SS PORTB2
+
+typedef struct {
+	uint8_t chipRev;
+	uint16_t part;
+	uint8_t partBuild;
+	uint16_t id;
+	uint8_t customer;
+	uint8_t romId; ///< ROM ID (3 = revB1B, 6 = revC2A)
+} si4468_info_t;
+
+void si4468_init(void);
+void si4468_get_info(si4468_info_t* info);
+void si4468_apply_startup_config(void);
+void si4468_tx_mode(void);
+void si4468_rx_mode(void);
+#endif