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Forum Post: AM2634: IPC hangs on callback

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Part Number: AM2634 I'm using IPC with SDK 8.6 with syscfg 1.19.0. My code stucks in IpcNotify_isr() when there is a lot of IPC traffic. The RPMessage_notifyCallback() is trying to handle messages from the RxBuf but RPMessage_vringIsFullRxBuf always returns true but inside RPMessage_recvHandler the RPMessage_allocEndPtMsg always return null. What is causing this endless loop? We are using 2 lockstep cores and this is the syscfg configuration for IPC: Thanks Alessandro

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