SPI DMA example code

[dangho3]

Hello,
I'm new to this toolchain/MCU. How can I get an example code or setup sequence to configure the SPI using DMA to transmit data?

Thank you

[qinzhao]

After installing the SDK in YT Config Tool.

[dangho3]

I have done these steps, but the function "SPI_DRV_MasterTransfer" seem not working cause I have checked the signals on SPI2_SOUT. There isn't any signals

[Diga]

We download Spi_Master_Dma_Demo code and capture 4 pins shown following.


Maybe you should check pin connection or code if download.

[vonh2]

Hi, thanks for the information, the issue was due to my IAR setup.
However, when using the example code. I observed that the PCS timing is not OK (Some time it triggers after the first clock edge) which caused the data corrupted.

[Frank]

Hi， If the clock idle polarity is configured as high, during the SPI initialization will provide a low pulse to the clock pin (subsequent low pulses will not occur unless execute de-initilization and Init again). However, since the PCS (Peripheral Chip Select) signal is always activated after the first edge of the clock, it does not affect data transmission.