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Add error handling and optimize FileIO::doBuffer() in the Bridge library

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Update FileIO::doBuffer() to check for TRANSFER_TIMEOUT and set buffered to 0, and optimize by incrementing readPos instead of moving all of the data one byte to the left in the buffer to skip the error code byte.
This commit is contained in:
bobh66 2013-12-26 15:02:59 -06:00 committed by Bob Haddleton
parent 660c7d86fd
commit d8c30c36d4
1 changed files with 8 additions and 5 deletions
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13
libraries/Bridge/src/FileIO.cpp
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@ -119,12 +119,15 @@ void File::doBuffer() {
// Try to buffer up to BUFFER_SIZE characters
readPos = 0;
uint8_t cmd[] = {'G', handle, BUFFER_SIZE - 1};
buffered = bridge.transfer(cmd, 3, buffer, BUFFER_SIZE) - 1;
buffered = bridge.transfer(cmd, 3, buffer, BUFFER_SIZE);
//err = buff[0]; // First byte is error code
if (buffered > 0) {
// Shift the reminder of buffer
for (uint8_t i = 0; i < buffered; i++)
buffer[i] = buffer[i + 1];
if (BridgeClass::TRANSFER_TIMEOUT == buffered || 0 == buffered) {
// transfer failed to retrieve any data
buffered = 0;
} else {
// transfer retrieved at least one byte of data so skip the error code character
readPos++;
buffered--;
}
}