testmav.c

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/*
  simple MAVLink testsuite for C
 */
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>
#include <stddef.h>

#define MAVLINK_USE_CONVENIENCE_FUNCTIONS
#define MAVLINK_COMM_NUM_BUFFERS 2

// this trick allows us to make mavlink_message_t as small as possible
// for this dialect, which saves some memory
#include <version.h>
#define MAVLINK_MAX_PAYLOAD_LEN MAVLINK_MAX_DIALECT_PAYLOAD_SIZE

#include <mavlink_types.h>
static mavlink_system_t mavlink_system = {42,11,};

#define MAVLINK_ASSERT(x) assert(x)
static void comm_send_ch(mavlink_channel_t chan, uint8_t c);

static mavlink_message_t last_msg;

#include <mavlink.h>
#include <testsuite.h>

static unsigned chan_counts[MAVLINK_COMM_NUM_BUFFERS];

static const unsigned message_lengths[] = MAVLINK_MESSAGE_LENGTHS;
static unsigned error_count;

static const mavlink_message_info_t message_info[256] = MAVLINK_MESSAGE_INFO;

static void print_one_field(mavlink_message_t *msg, const mavlink_field_info_t *f, int idx)
{
#define PRINT_FORMAT(f, def) (f->print_format?f->print_format:def)
        switch (f->type) {
        case MAVLINK_TYPE_CHAR:
                printf(PRINT_FORMAT(f, "%c"), _MAV_RETURN_char(msg, f->wire_offset+idx*1));
                break;
        case MAVLINK_TYPE_UINT8_T:
                printf(PRINT_FORMAT(f, "%u"), _MAV_RETURN_uint8_t(msg, f->wire_offset+idx*1));
                break;
        case MAVLINK_TYPE_INT8_T:
                printf(PRINT_FORMAT(f, "%d"), _MAV_RETURN_int8_t(msg, f->wire_offset+idx*1));
                break;
        case MAVLINK_TYPE_UINT16_T:
                printf(PRINT_FORMAT(f, "%u"), _MAV_RETURN_uint16_t(msg, f->wire_offset+idx*2));
                break;
        case MAVLINK_TYPE_INT16_T:
                printf(PRINT_FORMAT(f, "%d"), _MAV_RETURN_int16_t(msg, f->wire_offset+idx*2));
                break;
        case MAVLINK_TYPE_UINT32_T:
                printf(PRINT_FORMAT(f, "%lu"), (unsigned long)_MAV_RETURN_uint32_t(msg, f->wire_offset+idx*4));
                break;
        case MAVLINK_TYPE_INT32_T:
                printf(PRINT_FORMAT(f, "%ld"), (long)_MAV_RETURN_int32_t(msg, f->wire_offset+idx*4));
                break;
        case MAVLINK_TYPE_UINT64_T:
                printf(PRINT_FORMAT(f, "%llu"), (unsigned long long)_MAV_RETURN_uint64_t(msg, f->wire_offset+idx*8));
                break;
        case MAVLINK_TYPE_INT64_T:
                printf(PRINT_FORMAT(f, "%lld"), (long long)_MAV_RETURN_int64_t(msg, f->wire_offset+idx*8));
                break;
        case MAVLINK_TYPE_FLOAT:
                printf(PRINT_FORMAT(f, "%f"), (double)_MAV_RETURN_float(msg, f->wire_offset+idx*4));
                break;
        case MAVLINK_TYPE_DOUBLE:
                printf(PRINT_FORMAT(f, "%f"), _MAV_RETURN_double(msg, f->wire_offset+idx*8));
                break;
        }
}

static void print_field(mavlink_message_t *msg, const mavlink_field_info_t *f)
{
        printf("%s: ", f->name);
        if (f->array_length == 0) {
                print_one_field(msg, f, 0);
                printf(" ");
        } else {
                unsigned i;
                /* print an array */
                if (f->type == MAVLINK_TYPE_CHAR) {
                        printf("'%.*s'", f->array_length,
                               f->wire_offset+(const char *)_MAV_PAYLOAD(msg));
                        
                } else {
                        printf("[ ");
                        for (i=0; i<f->array_length; i++) {
                                print_one_field(msg, f, i);
                                if (i < f->array_length) {
                                        printf(", ");
                                }
                        }
                        printf("]");
                }
        }
        printf(" ");
}

static void print_message(mavlink_message_t *msg)
{
        const mavlink_message_info_t *m = &message_info[msg->msgid];
        const mavlink_field_info_t *f = m->fields;
        unsigned i;
        printf("%s { ", m->name);
        for (i=0; i<m->num_fields; i++) {
                print_field(msg, &f[i]);
        }
        printf("}\n");
}

static void comm_send_ch(mavlink_channel_t chan, uint8_t c)
{
        mavlink_status_t status;
        if (mavlink_parse_char(chan, c, &last_msg, &status)) {
                print_message(&last_msg);
                chan_counts[chan]++;
                /* channel 0 gets 3 messages per message, because of
                   the channel defaults for _pack() and _encode() */
                if (chan == MAVLINK_COMM_0 && status.current_rx_seq != (uint8_t)(chan_counts[chan]*3)) {
                        printf("Channel 0 sequence mismatch error at packet %u (rx_seq=%u)\n", 
                               chan_counts[chan], status.current_rx_seq);
                        error_count++;
                } else if (chan > MAVLINK_COMM_0 && status.current_rx_seq != (uint8_t)chan_counts[chan]) {
                        printf("Channel %u sequence mismatch error at packet %u (rx_seq=%u)\n", 
                               (unsigned)chan, chan_counts[chan], status.current_rx_seq);
                        error_count++;
                }
                if (message_lengths[last_msg.msgid] != last_msg.len) {
                        printf("Incorrect message length %u for message %u - expected %u\n", 
                               (unsigned)last_msg.len, (unsigned)last_msg.msgid, message_lengths[last_msg.msgid]);
                        error_count++;
                }
        }
        if (status.packet_rx_drop_count != 0) {
                printf("Parse error at packet %u\n", chan_counts[chan]);
                error_count++;
        }
}

int main(void)
{
        mavlink_channel_t chan;
        mavlink_test_all(11, 10, &last_msg);
        for (chan=MAVLINK_COMM_0; chan<=MAVLINK_COMM_1; chan++) {
                printf("Received %u messages on channel %u OK\n", 
                       chan_counts[chan], (unsigned)chan);
        }
        if (error_count != 0) {
                printf("Error count %u\n", error_count);
                exit(1);
        }
        printf("No errors detected\n");
        return 0;
}