continuously read few register on SPI slave device, using DMA? Master is a STM32H757, slave is a LSM6DSO ( accelero + gyro ).I have a SPI link inbetween.The "int2" pin on the LSM6 rise up when data are readable in registers.This pin is connected on EXTI2 on STM32.Register read is auto incremental on LSM6.I need to read 12 output registers on LSM6 when int2 pin rise up. I use BDMA to send over SPI 13 bytes ( register start adress + 12 dummy ). This is triggered with EXTI2, and work well.So the BDMA for TX is sending what the LSM6 requieres. On the other side, I have a BDMA channel on SPI rx that transfers to READ BUFFER what the spi miso is reading. If I use HAL_SPI_TransmitReceive(), with a lenght of 13, the system is looping perfectly, On MOSI I have 13 bytes( register adress + dummys ), and on MISO, I read 13 bytes ( dummys + registers data ), but each (13 bytes ) reading is overwriting the previous one. But my need is to fill a read buffer in memory of let say a size of 1024. I fact to trigg an aquisition of 1024 points, all
