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ems+ xF7 and xF9 commands

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proddy
2019-05-03 18:08:30 +02:00
parent 1850eb3797
commit 17307300fb
2 changed files with 26 additions and 7 deletions
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27
src/ems.cpp
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@@ -716,16 +716,31 @@ void _ems_readTelegram(uint8_t * telegram, uint8_t length) {
// determing if its normal ems or ems plus
if (telegram[2] >= 0xF0) {
// its EMS plus
// its EMS plus / EMS 2.0
EMS_RxTelegram.emsplus = true;
EMS_RxTelegram.type = (telegram[4] << 8) + telegram[5]; // is a long in bytes 5 & 6
EMS_RxTelegram.data = telegram + 6;
if (length <= 7) {
EMS_RxTelegram.data_length = 0; // special broadcast on ems+ have no data values
if (telegram[2] == 0xFF) {
EMS_RxTelegram.type = (telegram[4] << 8) + telegram[5]; // is a long in bytes 5 & 6
EMS_RxTelegram.data = telegram + 6;
if (length <= 7) {
EMS_RxTelegram.data_length = 0; // special broadcast on ems+ have no data values
} else {
EMS_RxTelegram.data_length = length - 7; // remove 6 byte header plus CRC
}
} else {
EMS_RxTelegram.data_length = length - 7; // remove 6 byte header plus CRC
// its F9 or F7
uint8_t shift = (telegram[4] != 0xFF); // true (1) if byte 4 is not 0xFF, then telegram is 1 byte longer
EMS_RxTelegram.type = (telegram[5 + shift] << 8) + telegram[6 + shift];
EMS_RxTelegram.data = telegram + 6 + shift; // there is a special byte after the typeID which we ignore for now
if (length <= (9 + shift)) {
EMS_RxTelegram.data_length = 0; // special broadcast on ems+ have no data values
} else {
EMS_RxTelegram.data_length = length - (9 + shift);
}
}
} else {
// Normal EMS 1.0
EMS_RxTelegram.emsplus = false;
EMS_RxTelegram.type = telegram[2]; // 3rd byte
EMS_RxTelegram.data = telegram + 4;