bool Brain::parsePacket() {
// Loop through the packet, extracting data.
// Based on mindset_communications_protocol.pdf from the Neurosky Mindset SDK.
hasPower = false;
clearEegPower(); // clear the eeg power to make sure we're honest about missing values... null would be better than 0.
for (int i = 0; i < packetLength; i++) {
switch (packetData[i]) {
case 2:
signalQuality = packetData[++i];
break;
case 4:
attention = packetData[++i];
break;
case 5:
meditation = packetData[++i];
break;
case 131:
// ASIC_EEG_POWER: eight big-endian 3-byte unsigned integer values representing delta, theta, low-alpha high-alpha, low-beta, high-beta, low-gamma, and mid-gamma EEG band power values
// The next byte sets the length, usually 24 (Eight 24-bit numbers... big endian?)
eegPowerLength = packetData[++i];
// Extract the values. Possible memory savings here by creating three temp longs?
for(int j = 0; j < EEG_POWER_BANDS; j++) {
eegPower[j] = ((unsigned long)packetData[++i] << 16) | ((unsigned long)packetData[++i] << 8) | (unsigned long)packetData[++i];
}
hasPower = true;
// This seems to happen once during start-up on the force trainer. Strange. Wise to wait a couple of packets before
// you start reading.
break;
default:
return false;
}
}
CEEGdata temp;
temp.signalQuality=signalQuality;
temp.attention=attention;
temp.time=time;
for(int j = 0; j < EEG_POWER_BANDS; j++)
temp.eegPower[j]=eegPower[j];
eegdata.push_back(temp);
return true;
}
void Brain::init() {
brainSerial->begin(9600);
freshPacket = false;
inPacket = false;
packetIndex = 0;
packetLength = 0;
checksum = 0;
checksumAccumulator = 0;
eegPowerLength = 0;
hasPower = false;
signalQuality = 200;
attention = 0;
meditation = 0;
clearEegPower();
}
void Brain::init(const char *comport) {
//brainSerial->begin(9600);// default, no need to set
if (comport[0]=='n')
yescome=false;
else
yescome=true;
com.open(comport);
// old lines
freshPacket = false;
inPacket = false;
packetIndex = 0;
packetLength = 0;
checksum = 0;
checksumAccumulator = 0;
eegPowerLength = 0;
hasPower = false;
signalQuality = 200;
attention = 0;
meditation = 0;
clearEegPower();
}
