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Fix I2C Master hang when communicating with bad I2C slaves. #591

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Merged
merged 1 commit into from
Oct 20, 2021
Merged

Fix I2C Master hang when communicating with bad I2C slaves. #591

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4 changes: 2 additions & 2 deletions cores/arduino/SERCOM.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -568,8 +568,8 @@ bool SERCOM::sendDataMasterWIRE(uint8_t data)
while(!sercom->I2CM.INTFLAG.bit.MB) {

// If a bus error occurs, the MB bit may never be set.
// Check the bus error bit and bail if it's set.
if (sercom->I2CM.STATUS.bit.BUSERR) {
// Check the bus error bit and ARBLOST bit and bail if either is set.
if (sercom->I2CM.STATUS.bit.BUSERR || sercom->I2CM.STATUS.bit.ARBLOST) {
return false;
}
}
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