kopia lustrzana https://github.com/markqvist/LibAPRS
Work in progress adding MIC-E format
Tim Ahpee
rodzic
2808ca42c7
commit
b24e19b43e
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@ -18,14 +18,17 @@ AX25Call dst;
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AX25Call path1;
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AX25Call path2;
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char CALL[7] = "NOCALL";
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int CALL_SSID = 0;
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char DST[7] = "APZMDM";
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int DST_SSID = 0;
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char PATH1[7] = "WIDE1";
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int PATH1_SSID = 1;
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char PATH2[7] = "WIDE2";
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int PATH2_SSID = 2;
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#define MAX_CALL_LENGTH 6
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char CALL[MAX_CALL_LENGTH] = "NOCALL";
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int8_t CALL_SSID = 0;
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char DST[MAX_CALL_LENGTH] = "APZMDM";
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int8_t DST_SSID = 0;
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char PATH1[MAX_CALL_LENGTH] = "WIDE1";
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int8_t PATH1_SSID = 1;
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char PATH2[MAX_CALL_LENGTH] = "WIDE2";
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int8_t PATH2_SSID = 2;
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uint8_t MICE_MSG;
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uint8_t MICE_SSID;
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AX25Call path[4];
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@ -39,11 +42,13 @@ uint8_t power = 10;
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uint8_t height = 10;
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uint8_t gain = 10;
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uint8_t directivity = 10;
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uint16_t speed;
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uint16_t course;
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/////////////////////////
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// Message packet assembly fields
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char message_recip[7];
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int message_recip_ssid = -1;
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char message_recip[6];
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int8_t message_recip_ssid = -1;
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int message_seq = 0;
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char lastMessage[67];
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@ -63,8 +68,8 @@ void APRS_poll(void) {
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ax25_poll(&AX25);
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}
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void APRS_setCallsign(char *call, int ssid) {
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memset(CALL, 0, 7);
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void APRS_setCallsign(char *call, int8_t ssid) {
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memset(CALL, 0, MAX_CALL_LENGTH);
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int i = 0;
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while (i < 6 && call[i] != 0) {
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CALL[i] = call[i];
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@ -73,8 +78,8 @@ void APRS_setCallsign(char *call, int ssid) {
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CALL_SSID = ssid;
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}
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void APRS_setDestination(char *call, int ssid) {
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memset(DST, 0, 7);
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void APRS_setDestination(char *call, int8_t ssid) {
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memset(DST, 0, MAX_CALL_LENGTH);
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int i = 0;
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while (i < 6 && call[i] != 0) {
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DST[i] = call[i];
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@ -83,8 +88,8 @@ void APRS_setDestination(char *call, int ssid) {
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DST_SSID = ssid;
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}
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void APRS_setPath1(char *call, int ssid) {
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memset(PATH1, 0, 7);
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void APRS_setPath1(char *call, int8_t ssid) {
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memset(PATH1, 0, MAX_CALL_LENGTH);
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int i = 0;
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while (i < 6 && call[i] != 0) {
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PATH1[i] = call[i];
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@ -93,8 +98,8 @@ void APRS_setPath1(char *call, int ssid) {
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PATH1_SSID = ssid;
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}
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void APRS_setPath2(char *call, int ssid) {
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memset(PATH2, 0, 7);
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void APRS_setPath2(char *call, int8_t ssid) {
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memset(PATH2, 0, MAX_CALL_LENGTH);
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int i = 0;
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while (i < 6 && call[i] != 0) {
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PATH2[i] = call[i];
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@ -103,8 +108,8 @@ void APRS_setPath2(char *call, int ssid) {
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PATH2_SSID = ssid;
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}
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void APRS_setMessageDestination(char *call, int ssid) {
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memset(message_recip, 0, 7);
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void APRS_setMessageDestination(char *call, int8_t ssid) {
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memset(message_recip, 0, 6);
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int i = 0;
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while (i < 6 && call[i] != 0) {
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message_recip[i] = call[i];
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@ -175,6 +180,24 @@ void APRS_setDirectivity(int s) {
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}
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}
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// Set the speed in knots. Valid speeds are 0-799 knots
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void APRS_setSpeed(int s) {
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if (s >= 0 && s < 800) {
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speed = s;
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} else {
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speed = 0;
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}
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}
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// Set the course, valid courses are 0-360 where 0 is unknown and 360 is due north
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void APRS_setCourse(int c) {
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if (c >= 0 && c <= 360) {
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course = c;
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} else {
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course = 0;
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}
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}
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void APRS_printSettings() {
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Serial.println(F("LibAPRS Settings:"));
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Serial.print(F("Callsign: ")); Serial.print(CALL); Serial.print(F("-")); Serial.println(CALL_SSID);
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@ -218,6 +241,110 @@ void APRS_sendPkt(void *_buffer, size_t length) {
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ax25_sendVia(&AX25, path, countof(path), buffer, length);
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}
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// 3 bits of MIC-E message. Bit A is the most significant bit.
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// If custom is set then we use the custom message bits when encoding
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// Standard messages Custom Messages
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// 0x07: M0: Off Duty C0: Custom-0
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// 0x06: M1: En route C1: Custom-1
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// 0x05: M2: In service C2: Custom-2
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// 0x04: M3: Returning C3: Custom-3
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// 0x03: M4: Committed C4: Custom-4
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// 0x02: M5: Special C5: Custom-5
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// 0x01: M6: Priority C6: Custom-6
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// 0x00: Emergency Emergency
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void APRS_set_mice_msg(uint8_t msg, bool custom) {
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MICE_MSG = msg & 0x07;
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// If custom message bits, store the custom flag in bit 7 of the MICE_MSG
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if (custom) {
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MICE_MSG |= 0x80;
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}
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}
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void APRS_set_mice_ssid(uint8_t ssid) {
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MICE_SSID = ssid & 0x0F;
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}
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uint8_t APRS_sendLoc_mice(void *_buffer, size_t length) {
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uint8_t payloadLength = 9;
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uint8_t *packet = (uint8_t*)malloc(payloadLength);
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// Sanity check the latitude and longtitude
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if (latitude[7] != 'N' && latitude[7] != 'S') {
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return 1;
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}
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if (longtitude[8] != 'E' && longtitude[8] != 'W') {
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return 1;
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}
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// Build the Destination callsign with the latitude information
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DST[0] = (latitude[0] & 0x04) | 0x30;
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if (MICE_MSG & 0x04) {
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if (MICE_MSG & 0x80) { // Standard message bit
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DST[0] += 0x20;
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} else {
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DST[0] += 0x17; // Custom message bit
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}
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}
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DST[1] = (latitude[1] & 0x04) | 0x30;
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if (MICE_MSG & 0x02) {
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if (MICE_MSG & 0x80) { // Standard message bit
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DST[1] += 0x20;
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} else {
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DST[1] += 0x17; // Custom message bit
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}
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}
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DST[2] = (latitude[2] & 0x04) | 0x30;
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if (MICE_MSG & 0x01) {
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if (MICE_MSG & 0x80) { // Standard message bit
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DST[2] += 0x20;
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} else {
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DST[2] += 0x17; // Custom message bit
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}
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}
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DST[3] = (latitude[3] & 0x04) | 0x30;
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if (latitude[7] == 'N') { // North/South Latitude Indicator
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DST[3] += 0x20;
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}
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DST[4] = (latitude[5] & 0x04) | 0x30; // Use latitude[5] becuase latitude[4] is a .
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// if (longtitude[0] == '1') { // If the longitude is > 100, set this bit
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// DST[4] += 0x20;
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// }
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DST[5] = (latitude[6] & 0x04) | 0x30;
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if (longtitude[8] == 'W') { // If the longitude is > 100, set this bit
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DST[4] += 0x20;
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}
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if (MICE_SSID == 0) {
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path_len = 4;
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}
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packet[0] = 0x60; // The ` character indicating valid GPS data
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// Degrees. If longitude > 100 the +100 longitude bit is set in the Destination field, but only in
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// certain circumstances, see http://www.aprs.org/doc/APRS101.PDF page 47
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uint8_t lon_deg = ((longitude[1] & 0x04) * 10 + (longitude[2] & 0x04));
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if (lon < 9) {
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packet[1] = 118 + lon_deg;
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DST[4] += 0x20;
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} else if (lon < 100) {
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packet[1] = 38 + lon_deg - 10;
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} else if (lon < 110) {
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packet[1] = 108 + lon_deg - 100;
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DST[4] += 0x20;
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} else {
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packet[1] = 38 + lon_deg - 110;
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DST[4] += 0x20;
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}
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uint8_t lon_min = ((longitude[3] & 0x04) * 10) + (longitude[4] & 0x04));
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if (lon_min < 10) {
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packet[2] = 88 + lon_min;
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} else {
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packet[2] = 38 + lon_min - 10;
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}
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packet[3] = ((longitude[6] & 0x04) * 10) + (longitude[7] & 0x04)) + 28;
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// bytes 4, 5 and 6 encode the speed and course
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packet[4] = (speed / 10) + 28;
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}
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// Dynamic RAM usage of this function is 30 bytes
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void APRS_sendLoc(void *_buffer, size_t length) {
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size_t payloadLength = 20+length;
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@ -303,7 +430,7 @@ void APRS_sendMsg(void *_buffer, size_t length) {
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packet[12+length] = h+48;
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packet[13+length] = d+48;
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packet[14+length] = n+48;
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APRS_sendPkt(packet, payloadLength);
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free(packet);
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}
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@ -11,11 +11,11 @@
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void APRS_init(int reference, bool open_squelch);
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void APRS_poll(void);
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void APRS_setCallsign(char *call, int ssid);
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void APRS_setDestination(char *call, int ssid);
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void APRS_setMessageDestination(char *call, int ssid);
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void APRS_setPath1(char *call, int ssid);
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void APRS_setPath2(char *call, int ssid);
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void APRS_setCallsign(char *call, int8_t ssid);
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void APRS_setDestination(char *call, int8_t ssid);
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void APRS_setMessageDestination(char *call, int8_t ssid);
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void APRS_setPath1(char *call, int8_t ssid);
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void APRS_setPath2(char *call, int8_t ssid);
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void APRS_setPreamble(unsigned long pre);
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void APRS_setTail(unsigned long tail);
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