yangsong8-a1 opened a new pull request, #3241:
URL: https://github.com/apache/nuttx-apps/pull/3241

   ## Summary
   
   Adjust the number of parameters in spitool. 
   Add the ability to transfer multiple transactions in one spitool seqs.
   
   ## Impact
   
   spitool can be used to transfer multiple trans at once.
   
   ## Testing
   
   target: tricore device
   -w 32 indicates the data transmission width is 32 bits.
   -r 2  indicates there are 2 transactions.
   -x 1 indicates exchange 1  32bit in each transaction.
   
   ```
   $ spi exch -b 1 -t 0 -n 0 -f 3000000 -m 1 -w 32 -x 1 -r 2 f001fff1 0000ff35
   Sending:        F1FF01F0 35FF0000
   Received:       2850C038 38500201
   ```
   
   
   


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