1. Write external flash chip through QSPI
2. Need to transmit 512 Bytes, for one selecton of LUT sequence, so need to keep loading Tx buffer as and when the data gets pushed out of the QSPI lines.
1. Is it possible to use eDMA to transfer data to Tx buffer of QSPI.
2. How eDMA will get to know Tx buffer full information from QSPI so that it will wait till there is empty place in Tx buffer.