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Accessory command validations

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This commit is contained in:
Asbelos 2020-06-23 20:00:34 +01:00
parent e7e4d4fbd9
commit 030cb654b4
2 changed files with 7 additions and 1 deletions
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5
DCC.cpp
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@ -81,6 +81,11 @@ static void DCC::setFn( int cab, byte functionNumber, bool on) {
}
void DCC::setAccessory(int address, byte number, bool activate) {
// use masks to detect wrong values and do nothing
if(address != address & 511)
return;
if(number != number & 3)
return;
byte b[2];
b[0] = address % 64 + 128; // first byte is of the form 10AAAAAA, where AAAAAA represent 6 least signifcant bits of accessory address

3
DCCEXParser.cpp
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@ -133,7 +133,8 @@ void DCCEXParser::parse(Print & stream, const char *com) {
break;
case 'a': // ACCESSORY <a ADDRESS SUBADDRESS ACTIVATE>
DCC::setAccessory(p[0],p[1],p[2]);
if(p[2] != p[2] & 1) return;
DCC::setAccessory(p[0],p[1],p[2]==1);
return;
case 'T': // TURNOUT <T ...>