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Release TWI bus right after stop or repeated start condition #3735

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Release TWI bus right after stop or repeated start condition #3735

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4 changes: 2 additions & 2 deletions hardware/arduino/avr/libraries/Wire/utility/twi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -476,6 +476,8 @@ ISR(TWI_vect)
}
break;
case TW_SR_STOP: // stop or repeated start condition received
// ack future responses and leave slave receiver state
twi_releaseBus();
// put a null char after data if there's room
if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){
twi_rxBuffer[twi_rxBufferIndex] = '\0';
Expand All @@ -484,8 +486,6 @@ ISR(TWI_vect)
twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex);
// since we submit rx buffer to "wire" library, we can reset it
twi_rxBufferIndex = 0;
// ack future responses and leave slave receiver state
twi_releaseBus();
break;
case TW_SR_DATA_NACK: // data received, returned nack
case TW_SR_GCALL_DATA_NACK: // data received generally, returned nack
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