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arduino-libraries / ArduinoBLE

ArduinoBLE library for Arduino
GNU Lesser General Public License v2.1
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BLE is doing with hardFault exception when using CAN ISRs #249

Open fterretf opened 2 years ago

fterretf commented 2 years ago

My project is using CAN and BLE at the same time on Arduino mkr1010 BLE alone is OK BLE and CAN without ISR is OK BLE and CAN with CAN Rx ISRs is crashing after a while with a hardFault exception because _discoveredDevices ._root.next...next pointer is overwritten. Any ideas? image

fterretf commented 2 years ago

More investigation: I modify the CAN interrupt to be the minimum. It now only clear the interrupt flag and wait for a while: image ModifyRegister() is clearing the interrupt flag through SPI image The hardFault exception still occurs Is BLE using SPI? with beginTransaction() endTransaction()?

facchinm commented 2 years ago

Hi @fterretf , On MKR WIFI 1010 the BLE uses the UART pins so there shouldn't be any "concurrency" issue. Are you using Sandeep's arduino-CAN library? Since the crash doesn't happen immediately I'd check if there's a memory leak somewhere; some of them were solved in version 1.3.1 of this library, maybe double check that it's the version you are using :wink:

fterretf commented 2 years ago

Hi @facchinm, Yes, I used my own fork fterretf /arduino-CAN from Sandeep's arduino-CAN library. But the problem should be reproducible with Sandeep Can lib Yes, I use BLE 1.3.1