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28e2fdaba7
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/*
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* transmits a frame of AO-7 telemetry as 1k2 AFSK in X.25 format
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*
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* Portions Copyright (C) 2018 Jonathan Brandenburg
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include "status.h"
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#include "ax5043.h"
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#include "ax25.h"
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#include "spi/ax5043spi.h"
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ax5043_conf_t hax5043;
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ax25_conf_t hax25;
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static void init_rf();
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void config_x25();
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void trans_x25();
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extern int upper_digit(int number);
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extern int lower_digit(int number);
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int config_afsk() {
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init_rf();
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printf("INFO: Initiating radio for X.25\n");
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ax25_init(&hax25, (uint8_t *) "CQ", '2', (uint8_t *) "DX", '2',
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AX25_PREAMBLE_LEN,
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AX25_POSTAMBLE_LEN);
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return(1);
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}
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int send_afsk(int tlm[][5]) {
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// printf("INFO: Configuring rf for X.25\n");
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// setSpiChannel(SPI_CHANNEL);
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// setSpiSpeed(SPI_SPEED);
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// initializeSpi();
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int ret;
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uint8_t data[1024];
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// 0x03 is a UI frame
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// 0x0F is no Level 3 protocol
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// rest is dummy CubeSatSim telemetry in AO-7 format
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//const char *str = "\x03\x0fhi hi 101 102 103 104 202 203 204 205 303 304 305 306 404 405 406 407 408 505 506 507 508 606 607 608 609\n";
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/* Infinite loop */
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// for (;;) {
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// sleep(2);
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// send X.25 packet
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printf("INFO: Preparing X.25 packet\n");
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char str[1000];
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char tlm_str[1000];
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char header_str[] = "\x03\x0fhi hi ";
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strcpy(str, header_str);
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int channel;
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for (channel = 1; channel < 7; channel++) {
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// printf("%d %d %d %d \n", tlm[channel][1], tlm[channel][2], tlm[channel][3], tlm[channel][4]);
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sprintf(tlm_str, "%d%d%d %d%d%d %d%d%d %d%d%d ",
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channel, upper_digit(tlm[channel][1]), lower_digit(tlm[channel][1]),
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channel, upper_digit(tlm[channel][2]), lower_digit(tlm[channel][2]),
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channel, upper_digit(tlm[channel][3]), lower_digit(tlm[channel][3]),
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channel, upper_digit(tlm[channel][4]), lower_digit(tlm[channel][4]));
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// printf("%s \n",tlm_str);
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strcat(str, tlm_str);
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}
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printf("INFO: Transmitting X.25 packet\n");
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memcpy(data, str, strnlen(str, 256));
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ret = ax25_tx_frame(&hax25, &hax5043, data, strnlen(str, 256));
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if (ret) {
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fprintf(stderr,
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"ERROR: Failed to transmit AX.25 frame with error code %d\n",
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ret);
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exit(EXIT_FAILURE);
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}
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ax5043_wait_for_transmit();
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if (ret) {
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fprintf(stderr,
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"ERROR: Failed to transmit entire AX.25 frame with error code %d\n",
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ret);
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exit(EXIT_FAILURE);
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}
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// }
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// sleep(20);
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return 0;
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}
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static void init_rf() {
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printf("INFO: Before rf init\n");
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int ret;
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ret = ax5043_init(&hax5043, XTAL_FREQ_HZ, VCO_INTERNAL);
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printf("INFO: After rf init\n");
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if (ret != PQWS_SUCCESS) {
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fprintf(stderr,
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"ERROR: Failed to initialize AX5043 with error code %d\n", ret);
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exit(EXIT_FAILURE);
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}
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}
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