initial checkin of some c-language code to parse Sierra Wireless HAPC

1 files changed, 109 insertions, 0 deletions

diff --git a/hapc_frame.h b/hapc_frame.h
new file mode 100644
index 0000000..96a81b6
--- /dev/null
+++ b/hapc_frame.h
@@ -0,0 +1,109 @@
+#pragma once
+
+#include <stdint.h>
+
+enum hapc_flow_id {
+	HAPC_FLOW_STATUS	= 0x00,
+	HAPC_FLOW_DEBUG		= 0x01,
+	HAPC_FLOW_INIT		= 0x02,
+	HAPC_FLOW_WI2C		= 0x03,
+	HAPC_FLOW_TRACE		= 0x04,
+	HAPC_FLOW_RI2C		= 0x05,
+	HAPC_FLOW_MSG		= 0x06,
+	HAPC_FLOW_GDB		= 0x07,
+	HAPC_FLOW_READ		= 0x08,
+	HAPC_FLOW_READ_PACK	= 0x09,
+	HAPC_FLOW_WRITE		= 0x0A,
+	HAPC_FLOW_OBJECT	= 0x0B,
+	HAPC_FLOW_RESET		= 0x0C,
+	HAPC_FLOW_PROTOCOL	= 0x0D,
+	HAPC_FLOW_EEPROM	= 0x0E,
+	HAPC_FLOW_EEPROM2	= 0x0F,
+	HAPC_FLOW_FS		= 0x10,
+	HAPC_FLOW_MSG2		= 0x11,
+	HAPC_FLOW_KBD		= 0x12,
+	HAPC_FLOW_WATCH		= 0x14,
+	HAPC_FLOW_DIAG		= 0x16,
+	HAPC_FLOW_RTK		= 0x18,
+	HAPC_FLOW_RPC2		= 0x19,
+	HAPC_FLOW_PROD		= 0x1A,
+	HAPC_FLOW_RADIO		= 0x1C,
+	HAPC_FLOW_AT		= 0x1D,
+	HAPC_FLOW_TRACE_TSTP	= 0x1E,
+	HAPC_FLOW_DUMP		= 0x20,
+	HAPC_FLOW_ATENCAP	= 0x9F,
+};
+
+/* HAPC frame format:
+ * first byte: 0xAA
+ * 2nd byte: LSB of length
+ * 3rd byte: MSB of length (3 lower bits) + flow-id (5 upper bits)
+ * N bytes payload
+ * 2 bytes of checksum
+ */
+
+/* common HAPC header */
+struct hapc_msg_hdr {
+	uint8_t aa;
+	uint8_t lsb_len;
+	uint8_t msb_len:3,
+		flow_id:5;
+	uint8_t data[0];
+} __attribute__ ((packed));
+
+#define hapc_payload_len(x)	((x)->msb_len << 8 | (x)->lsb_len)
+
+static inline uint8_t hapc_frame_csum(const struct hapc_msg_hdr *mh)
+{
+	unsigned int payload_len = hapc_payload_len(mh);
+
+	return mh->data[payload_len];
+}
+
+enum hapc_obj_status_id {
+	HAPC_OBJ_READ_REQ	= 0x01,
+	HAPC_OBJ_READ_RESP	= 0x02,
+	HAPC_OBJ_READ_RESP2	= 0x82,
+	HAPC_OBJ_WRITE_REQ	= 0x03,
+	HAPC_OBJ_WRITE_RESP	= 0x04,
+	HAPC_OBJ_WRITE_RESP2	= 0x84,
+	HAPC_OBJ_ID_LIST_REQ	= 0x05,
+	HAPC_OBJ_ID_LIST_RESP	= 0x06,
+	HAPC_OBJ_ID_LIST_RESP2	= 0x86,
+	HAPC_OBJ_DEL_REQ	= 0x07,
+	HAPC_OBJ_DEL_RESP	= 0x08,
+	HAPC_OBJ_DEL_RESP2	= 0x88,
+};
+
+/* uses HAPC_FLOW_OBJECT */
+struct hapc_flash_obj_hdr {
+	uint32_t obj_id;
+	uint32_t mask;
+	uint16_t total_size;
+	uint16_t block_size;
+	uint16_t offset_block;
+	uint8_t obj_status;
+	uint8_t data[0];
+} __attribute__ ((packed));
+
+
+/* uses HAPC_FLOW_READ_PACK */
+struct hapc_ram_read {
+	uint32_t start_addr;
+	uint16_t len;
+	uint8_t data[0];
+} __attribute__ ((packed));
+
+/* uses HAPC_FLOW_WRITE */
+struct hapc_ram_write {
+	uint8_t pad0[8];
+	uint32_t start_addr;
+	uint16_t len;
+	uint8_t pad1[2];
+	uint8_t data[0];
+} __attribute__ ((packed));
+
+#include <osmocom/core/utils.h>
+
+extern const struct value_string hapc_flow_names[30];
+const struct value_string hapc_obj_status_names[9];