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fix: tons of minor issues; first successful point on aprs.fi

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s3lph 2023-05-01 06:16:06 +02:00
parent e198d32b7f
commit 45d29a8391
Signed by: s3lph
GPG key ID: 0AA29A52FB33CFB5
1 changed files with 47 additions and 22 deletions
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69
src/main.cpp
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@ -5,12 +5,20 @@
#include "afsk_sinus.hpp" #include "afsk_sinus.hpp"
#include "eepromedit.hpp" #include "eepromedit.hpp"
#define DESTINATION "GPS " #define MIN_INTERVAL 300000 // 5 min
#define SEND_INVALID 0
#define DESTINATION "WIDE1 \x01"
#define TXDELAY 32 #define TXDELAY 32
#define FRAME_REPEAT 3
#define PTT 4
#define PTT_IND 13
#define EDITOR_EEPROM_BASE 42 #define EDITOR_EEPROM_BASE 42
char callsign[7] = { ' ', ' ', ' ', ' ', ' ', ' ', '\0' }; char callsign[7] = { ' ', ' ', ' ', ' ', ' ', ' ', '\0' };
uint8_t editorPinMap[8] = { 10, 11, 4, 6, 7, 8, 9, 5 }; uint8_t editorPinMap[8] = { 10, 9, 12, 8, 5, 7, 6, 11 };
uint32_t lastBroadcast = 0;
struct ax25 { struct ax25 {
uint8_t daddr[7]; uint8_t daddr[7];
@ -108,7 +116,7 @@ void initFrame() {
frame.daddr[i] <<=1; frame.daddr[i] <<=1;
frame.saddr[i] <<=1; frame.saddr[i] <<=1;
} }
frame.daddr[6] = (NONE << 1) | 0xe0; // command bit + reserved bits (AX.25 3.12.2) frame.daddr[6] = (DESTINATION[6] << 1) | 0xe0; // command bit + reserved bits (AX.25 3.12.2)
frame.saddr[6] = (callsign[6] << 1) | 0xe1; // command bit + reserved bits + end bit frame.saddr[6] = (callsign[6] << 1) | 0xe1; // command bit + reserved bits + end bit
frame.ctrl = 0x03; frame.ctrl = 0x03;
frame.proto = 0xf0; frame.proto = 0xf0;
@ -121,6 +129,10 @@ uint8_t mirrorByte(uint8_t byt) {
} }
void setup() { void setup() {
pinMode(PTT, OUTPUT);
digitalWrite(PTT, LOW);
pinMode(PTT_IND, OUTPUT);
digitalWrite(PTT_IND, LOW);
initEditor(callsign, 7, EDITOR_EEPROM_BASE, editorPinMap); initEditor(callsign, 7, EDITOR_EEPROM_BASE, editorPinMap);
OUT_DDR = 0x3f; OUT_DDR = 0x3f;
setZero(); setZero();
@ -173,8 +185,12 @@ void readNmeaGll() {
if (byt == '\n') { if (byt == '\n') {
state = 2; state = 2;
*sptr = 0; *sptr = 0;
if (str[3] == 'R' && str[4] == 'M' && str[5] == 'C' && *(sptr-6) == 'A') { if (str[3] == 'R' && str[4] == 'M' && str[5] == 'C') {
state = 2; if (SEND_INVALID || *(sptr-6) == 'A') {
state = 2;
} else {
state = 0;
}
} else { } else {
state = 0; state = 0;
} }
@ -186,27 +202,36 @@ void readNmeaGll() {
state = 0; state = 0;
} }
} }
// AX.25 3.8 - FCS is sent MSB first uint32_t now = millis();
uint16_t fcs = 0xffff; if (now - lastBroadcast > MIN_INTERVAL || lastBroadcast == 0) {
for (size_t i = 0; i < sizeof(frame); ++i) { lastBroadcast = now;
fcs = _crc_xmodem_update(fcs, mirrorByte(((uint8_t*) &frame)[i])); // AX.25 3.8 - FCS is sent MSB first
uint16_t fcs = 0xffff;
for (size_t i = 0; i < sizeof(frame); ++i) {
fcs = _crc_xmodem_update(fcs, mirrorByte(((uint8_t*) &frame)[i]));
}
for (char *c = str; c < sptr; ++c) {
fcs = _crc_xmodem_update(fcs, mirrorByte(*c));
}
fcs ^= 0xffff;
fcs = (mirrorByte(fcs & 0xff) << 8) | mirrorByte(fcs >> 8);
digitalWrite(PTT, HIGH);
digitalWrite(PTT_IND, HIGH);
sendFlag(true, TXDELAY+1);
for (uint8_t i = i; i < FRAME_REPEAT; ++i) {
sendBell202buf((uint8_t*) &frame, sizeof(frame), false);
sendBell202buf((uint8_t*) str, sptr-str, false);
sendBell202buf((uint8_t*) &fcs, 2, false);
sendFlag(false, 1);
}
setZero();
nrzi = true;
digitalWrite(PTT, LOW);
digitalWrite(PTT_IND, LOW);
} }
for (char *c = str; c < sptr; ++c) {
fcs = _crc_xmodem_update(fcs, mirrorByte(*c));
}
fcs ^= 0xffff;
fcs = (mirrorByte(fcs & 0xff) << 8) | mirrorByte(fcs >> 8);
sendFlag(true, TXDELAY+1);
sendBell202buf((uint8_t*) &frame, sizeof(frame), false);
sendBell202buf((uint8_t*) str, sptr-str, false);
sendBell202buf((uint8_t*) &fcs, 2, false);
sendFlag(false, 1);
setZero();
nrzi = true;
} }
void loop() { void loop() {
readNmeaGll(); readNmeaGll();
delay(10000);
} }