rpitx/ft8_lib
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Fixed issues in grid unpacking

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This commit is contained in:
Karlis Goba 2018-11-15 15:29:28 +02:00
parent a8d963cdfd
commit 73dd8e2709
2 changed files with 29 additions and 16 deletions
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8
ft8/text.cpp
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@ -84,13 +84,17 @@ void int_to_dd(char *str, int value, int width) {
++str;
value = -value;
}
else {
*str = '+';
++str;
}
int divisor = 1;
for (int i = 0; i < width; ++i) {
for (int i = 0; i < width - 1; ++i) {
divisor *= 10;
}
while (divisor > 1) {
while (divisor >= 1) {
int digit = value / divisor;
*str = '0' + digit;

37
ft8/unpack.cpp
View file

@ -46,13 +46,23 @@ void unpackgrid(uint16_t ng, char *grid) {
constexpr uint16_t NGBASE = 180*180;
if (ng == NGBASE + 1) {
// Empty grid is allowed
grid[0] = 0;
return;
}
// if ng >= NGBASE+1 and ng < NGBASE+31:
// return " -%02d" % (ng - (NGBASE+1)) // sig str, -01 to -30 DB
// if ng >= NGBASE+31 and ng < NGBASE+62:
// return "R-%02d" % (ng - (NGBASE+31))
// Check for signal strength reports (-01 to -30 dB)
if (ng >= NGBASE + 1 && ng < NGBASE + 31) {
int_to_dd(grid, ((NGBASE + 1) - ng), 2);
return;
}
if (ng >= NGBASE + 31 && ng < NGBASE + 62) {
grid[0] = 'R';
int_to_dd(grid + 1, ((NGBASE + 31) - ng), 2);
return;
}
// Check for special cases
if (ng == NGBASE + 62) {
strcpy(grid, "RO");
return;
@ -66,6 +76,7 @@ void unpackgrid(uint16_t ng, char *grid) {
return;
}
// Decode 4-symbol grid
int16_t lat = (int16_t)(ng % 180) - 90;
int16_t lng = ((int16_t)(ng / 180) * 2) - 180;
@ -75,16 +86,16 @@ void unpackgrid(uint16_t ng, char *grid) {
grid[3] = '0' + ((90 + lat) % 10);
grid[4] = 0;
// Check for extended range signal reports
if ((grid[0] == 'K') && (grid[1] == 'A')) {
// really + signal strength
// sig = int(g[2:4]) - 50
// return "+%02d" % (sig)
int sig = dd_to_int(grid + 2, 2) - 50;
int_to_dd(grid, sig, 2);
return;
}
else if ((grid[0] == 'L') && (grid[1] == 'A')) {
// really R+ signal strength
// sig = int(g[2:4]) - 50
// return "R+%02d" % (sig)
if ((grid[0] == 'L') && (grid[1] == 'A')) {
int sig = dd_to_int(grid + 2, 2) - 50;
grid[0] = 'R';
int_to_dd(grid + 1, sig, 2);
return;
}
}
@ -136,7 +147,7 @@ int unpack(const uint8_t *a72, char *message) {
nc2 |= (a72[5] << 8);
nc2 |= (a72[6]);
ng = (a72[7] >> 8);
ng = (a72[7] << 8);
ng |= (a72[8]);
if (ng & 0x8000) {
@ -200,7 +211,5 @@ int unpack(const uint8_t *a72, char *message) {
strcat(message, " ");
strcat(message, grid);
//if "000AAA" in msg:
// return None
return 0;
}