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STM32F2/4 SPI Slave rx DMA and unknown transferlength

Question asked by Martin on Aug 23, 2013
Latest reply on Aug 23, 2013 by Clive One
Hello again,

I have connected two STM32F2 via SPI1. The data will be transfered via a variable sized datablock. The first two bytes are a command (5 bit) and a length (11bit) information of the following block. Is it possible to read the first two bytes via polling and transfer the remaining - variable sized block - block via dma?