wip: RFM69

1 files changed, 41 insertions, 0 deletions

diff --git a/rf_test/rfm.c b/rf_test/rfm.c
new file mode 100644
index 0000000..1b88773
--- /dev/null
+++ b/rf_test/rfm.c
@@ -0,0 +1,41 @@
+#include "rfm.h"
+#include "spi.h"
+
+#define READ_MASK  0x7F
+#define WRITE_MASK 0x80
+
+static inline void send_cmd(uint8_t addr, uint8_t val)
+{
+	uint8_t ra, wa;
+
+	ra = addr | READ_MASK;
+	wa = addr | WRITE_MASK; 
+
+	while (spi_recv(ra) != val)
+		spi_send(wa, val);
+}
+
+void rfm_init(uint8_t addr)
+{
+	spi_init();
+
+	// mode: standby + packet
+	send_cmd(0x01, 0x44);
+
+	// rx interrupt on DPIO0
+	send_cmd(0x25, 0x40);
+	send_cmd(0x26, 0x07);
+
+	// packet format: 8 bits + whitening + crc + addr filtering
+	send_cmd(0x37, 0x52);
+	send_cmd(0x38, 0x08);
+	send_cmd(0x38, addr);
+
+	// disable encryption
+	send_cmd(0x3D, 0x02);
+}
+
+void rfm_send(uint8_t addr, uint8_t data)
+{
+	
+}