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Convert hex to ascii?

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iPad_User

Last updated

Topic starter
Hey people,

for my actual lemur template I'd like to convert a sysex string to a ascii text.
When searching the forum I found two code examples that might help on this:

This first one converts a sysex array to hex numbers:
decl a, b, c , i;
c = sizeof(array)*3-1;
if(c>255) return({0x00}); // array size limit 
a = fill(1,0x20,c);
// break up each number into two nibbles of 4 bits each.
// If the nibble is 9 or less, it's a number and add 30h to it.
//    ASCII '0' is 0x30
// If the nibble is greater than 9, add 0x37 to it.
//    ASCII 'a' is
for(i = 0; i < c; i++)
{
   b = array[i] >> 4;
   a[i*3] = b > 9 ? b+55 : b+48;
   b = array[i] & 0xF;
   a[i*3+1] = b > 9 ? b+55 : b+48;
}
return arraytostring(a);
And this one should do a conversion of hex to ascii:
decl val=car;
if(car == '0') val = 0x30;
if(car == 0) val = 0x30;
else if(car == '\') val = 0x5C;
else if(car == '/') val = 0x2F;

else if(car == '1') val = 0x31;
else if(car == '2') val = 0x32;
else if(car == '3') val = 0x33;
else if(car == '4') val = 0x34;
else if(car == '5') val = 0x35;
else if(car == '6') val = 0x36;
else if(car == '7') val = 0x37;
else if(car == '8') val = 0x38;
else if(car == '9') val = 0x39;

else if(car == 1) val = 0x31;
else if(car == 2) val = 0x32;
else if(car == 3) val = 0x33;
else if(car == 4) val = 0x34;
else if(car == 5) val = 0x35;
else if(car == 6) val = 0x36;
else if(car == 7) val = 0x37;
else if(car == 8) val = 0x38;
else if(car == 9) val = 0x39;

else if(car == 'a') val = 0x61;
else if(car == 'b') val = 0x62;
else if(car == 'c') val = 0x63;
else if(car == 'd') val = 0x64;
else if(car == 'e') val = 0x65;
else if(car == 'f') val = 0x66;
else if(car == 'g') val = 0x67;
else if(car == 'h') val = 0x68;
else if(car == 'i') val = 0x69;
else if(car == 'j') val = 0x6A;
else if(car == 'k') val = 0x6B;
else if(car == 'l') val = 0x6C;
else if(car == 'm') val = 0x6D;
else if(car == 'n') val = 0x6E;
else if(car == 'o') val = 0x6F;
else if(car == 'p') val = 0x70;
else if(car == 'q') val = 0x71;
else if(car == 'r') val = 0x72;
else if(car == 's') val = 0x73;
else if(car == 't') val = 0x74;
else if(car == 'u') val = 0x75;
else if(car == 'v') val = 0x76;
else if(car == 'w') val = 0x77;
else if(car == 'x') val = 0x78;
else if(car == 'y') val = 0x79;
else if(car == 'z') val = 0x7A;

else if(car == 'A') val = 0x41;
else if(car == 'B') val = 0x42;
else if(car == 'C') val = 0x43;
else if(car == 'D') val = 0x44;
else if(car == 'E') val = 0x45;
else if(car == 'F') val = 0x46;
else if(car == 'G') val = 0x47;
else if(car == 'H') val = 0x48;
else if(car == 'I') val = 0x49;
else if(car == 'J') val = 0x4A;

else if(car == 'K') val = 0x4B;
else if(car == 'L') val = 0x4C;
else if(car == 'M') val = 0x4D;
else if(car == 'N') val = 0x4E;
else if(car == 'O') val = 0x4F;
else if(car == 'P') val = 0x50;
else if(car == 'Q') val = 0x51;
else if(car == 'R') val = 0x52;
else if(car == 'S') val = 0x53;
else if(car == 'T') val = 0x54;
else if(car == 'U') val = 0x55;
else if(car == 'V') val = 0x56;
else if(car == 'W') val = 0x57;
else if(car == 'X') val = 0x58;
else if(car == 'Y') val = 0x59;
else if(car == 'Z') val = 0x5A;

return val;
But I now don't know how to bring both codes together, so that I can send a sysex string like F0 48 61 6c 6c 6f (which is just F0 for sysex and the word "Hello" as hex) to lemur and it prints Hello on a monitor-object (or text-object).
I now have an OnMidi script on a monitor object which contains:
Monitor.value=arraytohex(MIDI_ARGS);
This works fine.

Could anybody help me with the next step?

Thanks,
Chris

iPad_User

Last updated

Has no one an idea how to convert a sysEx string to readable informations?

f.e. with this message 
F0 00 00 66 10 12 00 48 65 6C 6C 6F F7
I'm able to print "Hello" onto a surfaceLCD. But the surfaceLCD is limited in numbers of characters and also the width is fixed. That's why I want to use a text- or a monitor-object. So I'd need something, that converts 48 65 6C 6C 6F to chars...

Any help? ;-)