initial checkin of some c-language code to parse Sierra Wireless HAPC
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commit
a915c1c944
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OSMO_CFLAGS:=`pkg-config --cflags libosmocore`
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OSMO_LDFLAGS:=`pkg-config --libs libosmocore`
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CFLAGS=-g -Wall $(OSMO_CFLAGS)
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LDFLAGS=$(OSMO_LDFLAGS)
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all: hapc_test
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%.o: %.c
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$(CC) $(CFLAGS) -o $@ -c $<
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hapc_test: hapc_test.o hapc_frame.o
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$(CC) $(LDFLAGS) -o $@ $^
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clean:
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rm -f hapc_test *.o || true
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#include <osmocom/core/utils.h>
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#include "hapc_frame.h"
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const struct value_string hapc_flow_names[30] = {
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{ HAPC_FLOW_STATUS, "status" },
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{ HAPC_FLOW_DEBUG, "debug" },
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{ HAPC_FLOW_INIT, "init" },
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{ HAPC_FLOW_WI2C, "wi2c" },
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{ HAPC_FLOW_TRACE, "trace" },
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{ HAPC_FLOW_RI2C, "ri2c" },
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{ HAPC_FLOW_MSG, "msg" },
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{ HAPC_FLOW_GDB, "gdb" },
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{ HAPC_FLOW_READ, "read" },
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{ HAPC_FLOW_READ_PACK, "read-pack" },
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{ HAPC_FLOW_WRITE, "write" },
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{ HAPC_FLOW_OBJECT, "object" },
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{ HAPC_FLOW_RESET, "reset" },
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{ HAPC_FLOW_PROTOCOL, "protocol" },
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{ HAPC_FLOW_EEPROM, "eeprom" },
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{ HAPC_FLOW_EEPROM2, "eeprom2" },
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{ HAPC_FLOW_FS, "filesystem" },
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{ HAPC_FLOW_MSG2, "msg2" },
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{ HAPC_FLOW_KBD, "kbd" },
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{ HAPC_FLOW_WATCH, "watch" },
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{ HAPC_FLOW_DIAG, "diag" },
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{ HAPC_FLOW_RTK, "rtk" },
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{ HAPC_FLOW_RPC2, "rpc2" },
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{ HAPC_FLOW_PROD, "prod" },
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{ HAPC_FLOW_RADIO, "radio" },
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{ HAPC_FLOW_AT, "at" },
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{ HAPC_FLOW_TRACE_TSTP, "trace" },
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{ HAPC_FLOW_DUMP, "dump" },
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{ HAPC_FLOW_ATENCAP, "atencap" },
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{ 0, NULL }
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};
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const struct value_string hapc_obj_status_names[9] = {
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{ HAPC_OBJ_READ_REQ, "read-req" },
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{ HAPC_OBJ_READ_RESP, "read-resp" },
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{ HAPC_OBJ_WRITE_REQ, "write-req" },
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{ HAPC_OBJ_WRITE_RESP, "write-resp" },
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{ HAPC_OBJ_ID_LIST_REQ, "id-list-req" },
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{ HAPC_OBJ_ID_LIST_RESP,"id-list-resp" },
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{ HAPC_OBJ_DEL_REQ, "delete-req" },
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{ HAPC_OBJ_DEL_RESP, "delete-resp" },
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{ 0, NULL }
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};
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#pragma once
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#include <stdint.h>
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enum hapc_flow_id {
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HAPC_FLOW_STATUS = 0x00,
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HAPC_FLOW_DEBUG = 0x01,
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HAPC_FLOW_INIT = 0x02,
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HAPC_FLOW_WI2C = 0x03,
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HAPC_FLOW_TRACE = 0x04,
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HAPC_FLOW_RI2C = 0x05,
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HAPC_FLOW_MSG = 0x06,
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HAPC_FLOW_GDB = 0x07,
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HAPC_FLOW_READ = 0x08,
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HAPC_FLOW_READ_PACK = 0x09,
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HAPC_FLOW_WRITE = 0x0A,
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HAPC_FLOW_OBJECT = 0x0B,
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HAPC_FLOW_RESET = 0x0C,
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HAPC_FLOW_PROTOCOL = 0x0D,
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HAPC_FLOW_EEPROM = 0x0E,
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HAPC_FLOW_EEPROM2 = 0x0F,
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HAPC_FLOW_FS = 0x10,
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HAPC_FLOW_MSG2 = 0x11,
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HAPC_FLOW_KBD = 0x12,
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HAPC_FLOW_WATCH = 0x14,
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HAPC_FLOW_DIAG = 0x16,
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HAPC_FLOW_RTK = 0x18,
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HAPC_FLOW_RPC2 = 0x19,
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HAPC_FLOW_PROD = 0x1A,
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HAPC_FLOW_RADIO = 0x1C,
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HAPC_FLOW_AT = 0x1D,
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HAPC_FLOW_TRACE_TSTP = 0x1E,
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HAPC_FLOW_DUMP = 0x20,
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HAPC_FLOW_ATENCAP = 0x9F,
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};
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/* HAPC frame format:
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* first byte: 0xAA
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* 2nd byte: LSB of length
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* 3rd byte: MSB of length (3 lower bits) + flow-id (5 upper bits)
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* N bytes payload
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* 2 bytes of checksum
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*/
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/* common HAPC header */
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struct hapc_msg_hdr {
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uint8_t aa;
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uint8_t lsb_len;
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uint8_t msb_len:3,
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flow_id:5;
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uint8_t data[0];
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} __attribute__ ((packed));
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#define hapc_payload_len(x) ((x)->msb_len << 8 | (x)->lsb_len)
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static inline uint8_t hapc_frame_csum(const struct hapc_msg_hdr *mh)
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{
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unsigned int payload_len = hapc_payload_len(mh);
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return mh->data[payload_len];
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}
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enum hapc_obj_status_id {
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HAPC_OBJ_READ_REQ = 0x01,
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HAPC_OBJ_READ_RESP = 0x02,
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HAPC_OBJ_READ_RESP2 = 0x82,
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HAPC_OBJ_WRITE_REQ = 0x03,
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HAPC_OBJ_WRITE_RESP = 0x04,
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HAPC_OBJ_WRITE_RESP2 = 0x84,
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HAPC_OBJ_ID_LIST_REQ = 0x05,
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HAPC_OBJ_ID_LIST_RESP = 0x06,
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HAPC_OBJ_ID_LIST_RESP2 = 0x86,
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HAPC_OBJ_DEL_REQ = 0x07,
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HAPC_OBJ_DEL_RESP = 0x08,
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HAPC_OBJ_DEL_RESP2 = 0x88,
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};
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/* uses HAPC_FLOW_OBJECT */
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struct hapc_flash_obj_hdr {
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uint32_t obj_id;
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uint32_t mask;
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uint16_t total_size;
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uint16_t block_size;
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uint16_t offset_block;
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uint8_t obj_status;
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uint8_t data[0];
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} __attribute__ ((packed));
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/* uses HAPC_FLOW_READ_PACK */
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struct hapc_ram_read {
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uint32_t start_addr;
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uint16_t len;
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uint8_t data[0];
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} __attribute__ ((packed));
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/* uses HAPC_FLOW_WRITE */
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struct hapc_ram_write {
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uint8_t pad0[8];
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uint32_t start_addr;
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uint16_t len;
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uint8_t pad1[2];
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uint8_t data[0];
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} __attribute__ ((packed));
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#include <osmocom/core/utils.h>
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extern const struct value_string hapc_flow_names[30];
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const struct value_string hapc_obj_status_names[9];
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#include <stdio.h>
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#include "hapc_frame.h"
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const uint8_t test_frame[] = { 0xAA, 0x10, 0x58, 0x02, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x01, 0x00, 0x13 };
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const uint8_t resp_frame[] = { 0xAA, 0x20, 0x58, 0x02, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x10, 0x00, 0x00, 0x00, 0x82,
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0x18, 0x81, 0x00, 0x00, 0x20, 0x03, 0x00, 0x09, 0x08, 0x91, 0x94, 0x58, 0x16, 0x89, 0x63, 0x07, 0xf2, 0x0d };
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static void dump_frame_object(const struct hapc_flash_obj_hdr *foh, unsigned int len)
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{
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unsigned int payload_len = len - sizeof(*foh);
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printf("obj_id=0x%08x, mask=0x%08x, total_size=%d, block_size=%d, offset_block=%d, status=%s, data=%s\n",
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foh->obj_id, foh->mask, foh->total_size, foh->block_size, foh->offset_block,
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get_value_string(hapc_obj_status_names, foh->obj_status & 0x7f), osmo_hexdump(foh->data, payload_len));
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}
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static uint8_t compute_checksum(const uint8_t *data, unsigned int len)
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{
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unsigned int i;
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uint8_t checksum = 0;
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for (i = 0; i < len; i++)
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checksum += data[i];
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return checksum;
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}
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void dump_frame(const struct hapc_msg_hdr *hdr)
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{
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unsigned int len = hapc_payload_len(hdr);
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printf("len=%4u, flow_id=%s: ", len,
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get_value_string(hapc_flow_names, hdr->flow_id));
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printf("checksum=0x%02x, computed=0x%02x\n",
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hapc_frame_csum(hdr), compute_checksum((const uint8_t *) hdr, sizeof(*hdr)+len));
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switch (hdr->flow_id) {
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case HAPC_FLOW_OBJECT:
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dump_frame_object((const struct hapc_flash_obj_hdr *) hdr->data, len - sizeof(*hdr));
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break;
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default:
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printf("\n");
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break;
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}
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}
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int main(int argc, char **argv)
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{
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const struct hapc_msg_hdr *hdr = (const struct hapc_msg_hdr *) test_frame;
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dump_frame(hdr);
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hdr = (const struct hapc_msg_hdr *) resp_frame;
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dump_frame(hdr);
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}
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