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weathex: frid=1 raw

test
Zilog80 2023-05-17 21:37:50 +02:00
rodzic 6d0cfc4f64
commit 2e7d14d907
1 zmienionych plików z 40 dodań i 31 usunięć
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weathex/weathex_20230512_401100kHz.c
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@ -26,24 +26,22 @@ int wav_channel = 0; // audio channel: left
#define BAUD_RATE 4800.0 // (4997.2) // 5000
#define FRAMELEN 69 //64 //200 //(66)
#define FRAMELEN 69 //64
#define BITFRAMELEN (8*FRAMELEN)
/*
#define HEADLEN 56 //64
#define HEADLEN 56
#define HEADOFS 0
char header[] = "10101010""10101010""10101010"//"10101010" // preamble
"11000001""10010100""11000001""11000110";
char header[] = "10101010""10101010""10101010" // AA AA AA (preamble)
"11000001""10010100""11000001"; // C1 94 C1
*/
//preamble_header_sn1: 101010101010101010101010 1100000110010100110000011100011001111000 110001010110110111100100
//preamble_header_sn2: 101010101010101010101010 1100000110010100110000011100011001111000 001100100110110111100100
//preamble_header_sn3: 101010101010101010101010 1100000110010100110000011100011001111000 001010000110110111100100
#define HEADLEN 48 //64
#define HEADLEN 40 //48
#define HEADOFS 0
char header[] = //"10101010""10101010""10101010"//"10101010" // preamble
//"00101101""11010100""10101010";//"000100";
"10101010""10101010""10101010"
"00101101""11010100""10101010"; //00010010010101000011011110001001
char header[] = "10101010""10101010""10101010" // AA AA AA (preamble)
"00101101""11010100"; //"10101010"; // 2D D4 55/AA
char buf[HEADLEN+1] = "xxxxxxxxxx\0";
int bufpos = 0;
@ -267,13 +265,13 @@ int bits2bytes(char *bitstr, ui8_t *bytes) {
// cf. https://www.ti.com/lit/an/swra322/swra322.pdf
// https://destevez.net/2019/07/lucky-7-decoded/
//
// counter low byte: frame[OFS+6] XOR 0xCC
// zero bytes, frame[OFS+32]: 0C CA C9 FB 49 37 E5 A8
// counter low byte: frame[OFS+4] XOR 0xCC
// zero bytes, frame[OFS+30]: 0C CA C9 FB 49 37 E5 A8
//
ui8_t PN9b[64] = { 0xFF, 0x87, 0xB8, 0x59, 0xB7, 0xA1, 0xCC, 0x24,
0x57, 0x5E, 0x4B, 0x9C, 0x0E, 0xE9, 0xEA, 0x50,
0x2A, 0xBE, 0xB4, 0x1B, 0xB6, 0xB0, 0x5D, 0xF1,
0xE6, 0x9A, 0xE3, 0x45, 0xFD, 0x2c, 0x53, 0x18,
0xE6, 0x9A, 0xE3, 0x45, 0xFD, 0x2C, 0x53, 0x18,
0x0C, 0xCA, 0xC9, 0xFB, 0x49, 0x37, 0xE5, 0xA8,
0x51, 0x3B, 0x2F, 0x61, 0xAA, 0x72, 0x18, 0x84,
0x02, 0x23, 0x23, 0xAB, 0x63, 0x89, 0x51, 0xB3,
@ -295,7 +293,7 @@ ui32_t xor8sum(ui8_t bytes[], int len) {
}
#define OFS 4
#define OFS 6 // xPN9: OFS=8, different baud
int print_frame() {
int j;
@ -305,12 +303,12 @@ int print_frame() {
for (j = 0; j < FRAMELEN; j++) {
ui8_t b = frame_bytes[j];
//if (j >= 6) b ^= PN9b[(j-6)%64];
//if (j >= 6) b ^= PN9b[(j-6)%64]; // PN9 baud diff
xframe[j] = b;
}
chkval = xor8sum(xframe+OFS+2, 53);
chkdat = (xframe[OFS+55]<<8) | xframe[OFS+55+1];
chkval = xor8sum(xframe+OFS, 53);
chkdat = (xframe[OFS+53]<<8) | xframe[OFS+53+1];
chk_ok = (chkdat == chkval);
if (option_raw) {
@ -336,21 +334,24 @@ int print_frame() {
ui32_t cnt;
int val;
// SN ?
sn = xframe[OFS+2] | (xframe[OFS+3]<<8) | ((xframe[OFS+4])<<16) | ((xframe[OFS+5])<<24);
printf(" (0x%08X) ", sn);
sn = xframe[OFS] | (xframe[OFS+1]<<8) | (xframe[OFS+2]<<16) | (xframe[OFS+3]<<24);
// counter ?
cnt = xframe[OFS+6] | (xframe[OFS+7]<<8);
printf(" [%5d] ", cnt);
// counter
cnt = xframe[OFS+4] | (xframe[OFS+5]<<8);
ui8_t frid = xframe[OFS+8];
ui8_t frid = xframe[OFS+6];
if (frid == 2)
{
// SN ?
printf(" (0x%08X) ", sn);
// counter
printf(" [%5d] ", cnt);
// time/UTC
int hms;
hms = xframe[OFS+9] | (xframe[OFS+10]<<8) | ((xframe[OFS+11])<<16);
hms = xframe[OFS+7] | (xframe[OFS+8]<<8) | (xframe[OFS+9]<<16);
hms &= 0x3FFFF;
//printf(" (%6d) ", hms);
ui8_t h = hms / 10000;
@ -359,7 +360,7 @@ int print_frame() {
printf(" %02d:%02d:%02d ", h, m, s); // UTC
// alt
val = xframe[OFS+15] | (xframe[OFS+16]<<8) | ((xframe[OFS+17])<<16);
val = xframe[OFS+13] | (xframe[OFS+14]<<8) | (xframe[OFS+15]<<16);
val &= 0x7FFFFF; // int23 ?
val >>= 4;
//if (val & 0x3FFFFF) val -= 0x400000;
@ -367,7 +368,7 @@ int print_frame() {
printf(" alt: %.1f ", alt); // MSL
// lat
val = xframe[OFS+17] | (xframe[OFS+18]<<8) | ((xframe[OFS+19])<<16) | ((xframe[OFS+20])<<24);
val = xframe[OFS+15] | (xframe[OFS+16]<<8) | (xframe[OFS+17]<<16) | (xframe[OFS+18]<<24);
val >>= 7;
val &= 0x3FFFFFF; // int26 ?
if (val & 0x2000000) val -= 0x4000000; // sign ?
@ -375,19 +376,27 @@ int print_frame() {
printf(" lat: %.4f ", lat);
// lon
val = xframe[OFS+21] | (xframe[OFS+22]<<8) | ((xframe[OFS+23])<<16)| ((xframe[OFS+24])<<24);
val = xframe[OFS+19] | (xframe[OFS+20]<<8) | (xframe[OFS+21]<<16)| (xframe[OFS+22]<<24);
val &= 0x3FFFFFF; // int26 ?
if (val & 0x2000000) val -= 0x4000000; // sign ?
float lon = val / 1e5f;
printf(" lon: %.4f ", lon);
// checksum
printf(" %s", chk_ok ? "[OK]" : "[NO]");
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
printf("\n");
}
else if (frid ==1 && option_verbose) {
printf(" (0x%08X) ", sn);
printf(" [%5d] ", cnt);
// checksum
printf(" %s", chk_ok ? "[OK]" : "[NO]");
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
printf(" %s", chk_ok ? "[OK]" : "[NO]");
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
printf("\n");
printf("\n");
}
}
return 0;