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Fix regression: SerialUSB.available() do not return correct values

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Fix #172
This commit is contained in:
Cristian Maglie 2016-10-10 12:43:14 +02:00
parent dfe465f0eb
commit b06501baee
1 changed files with 13 additions and 1 deletions
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14
cores/arduino/USB/SAMD21_USBDevice.h
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@ -350,7 +350,19 @@ public:
// Returns how many bytes are stored in the buffers
virtual uint32_t available() const {
return (last0 - first0) + (last1 - first1);
if (current == 0) {
bool ready = false;
synchronized {
ready = ready0;
}
return ready ? (last0 - first0) : 0;
} else {
bool ready = false;
synchronized {
ready = ready1;
}
return ready ? (last1 - first1) : 0;
}
}
void release() {