Hello, I am using the MIMXRT1050 board with Keilv5 Pro edition.
I am working on a custom project and need help configuring my LPSPI and DMA. My goal is the use DMA to send 160 bytes to the transmit buffer of LPSPI. I have a area of memory where the data is stored. My function will take in the start address of the data and size of data as parameters.
I want to use DMA to send the data to the transmit buffer of the LPSPI. I see there is a special LPSPI_EDMA functions, but I am confused on how to set these API functions for my specific case. All the examples involve a master and slave board. In my case, I will be moving data from memory to the LPSPI TX buffer.
My understanding is if I use DMA and set the watermark of the FIFO to 2 words, I will be able to send2 words to the transmit buffer then the transmit buffer will be full and send out those words and return empty to take in the next 2 words until the DMA is complete.
How can I use the LPSPI_EDMA to send data from stored memory to the LPSPI TX buffer?
Any help is appreciated.
Best,
Kamal
