bane

Thank you Chris and Mario for your reply, Chris, i don't have a problem with CS line when i use SPI without DMA. Without DMA it works fine and i don't need to raising/lowering the SPI_CS pin manually before each transaction, it is done automatic. As Mario sad: "The suggestion (1) of Chris could be an idea, but it's not allowable when you're using the DMA to transfer the data." what is in my case. Any way it must be possible to use SPI with DMA, in which CS is gonna raising/lowering after data transmit, otherwise what is the benefit of DMA if I need for example D/A converter to be attached to SPI. I need CS line which is raising/lowering after data transfer, or the output of my D/A will not change. There is one thing I did not try. When I try to configure SPI i choose fixed peripheral select, but not variable peripheral select, maybe that could be possible solution. Regards Bane

Hi CW2, Yes, i haven't executed GPNVM2 script, so this was main problem why my led wasn't blinking. Thanks a lot. But now after this it happend something strange. After executed GPNVM2 script everything work fine ( my led is blinking ) but when i reconnect cable i recive message: USB Device Not Recognized and in Device Manager/Ports i can't see any more AT91 USB to serial Converter. My LED is still blinking and work fine but my computer do not recognize netduino attached to computer. Is this normal? In attachment there is error message i recive when reconnect cable. Bane

Hi bane,

You can certainly erase your Netduino and deploy native firmware. IAR should work fine. What pin # are you trying to use to illuminate the LED?

Chris

Hi Chris,

Well, I use pin PB23 to illuminate the LED. In attachment there is SAM-BA window, which I used for downloading of .bin file.
After downloading of .bin file i reconnect cable, but my led still doesn't blinking.

Bane