Part Number: AM2632
Hello TI team,
In our project, we need configure QSPI&GPMC&UART to EDMA mode. But there is the conflict of DMA channel usage. So the UART transaction failed. This problem is solved by modifying the UART Tx and UART Rx to use some other channel (3 and 4 for example) . The screenshot below is the answer of this question.
Furthermore, there are some questions about a way to handle some unexcepted situations in UART transaction with DMA mode.
- If the actual data length is more than or less than the expected data length in some abnormal situations, how can we identify this situation is happening and cancel this UART transaction or DMA transaction? So, we can try to start the next transaction rather than blocking the rest of all transactions.
- Is there configuration parameter about UART or EDMA time out in SysCfg? If the UART transaction is not happening, how can we identify if the transaction is time out? Besides, I found that the initial time out threshold of semaphore is forever in SDK, can I change this time out value to a reasonable time? And if I configure the UART read&write moede to "Callback", this time out in transaction parameter seems will not be used. So it seems that configuring the time out parameter will be a better way to solve my question.
