Intel Edison spi read error

Stefan_V_ — Thu, 25 Dec 2014 13:38:34 GMT

Hi,

i tried out libmraa with iot - spi write works fine, lacks a little of perdormance.

I have problems reading from spi - because i always get a copy of the content of the write buffer in the read buffer. I have verified, that the data on receive line is different. I can track it down to libmraa. Libmraa uses the same call into iot for write, write_buf and transfer_buf - so all functions don't work for reading spi. I always get back a copy of the transmit buffer. Maybe for reading the content of the transfer-buffer register is read out instead of the receive-register.

Because low level registers of Intel Edison are documented so purely, i cannot track it further.

Could you check this please ?

Best regards,

Stefan Verse

Created an issue in github.

NagaVenkat_K_Intel — Fri, 26 Dec 2014 09:31:11 GMT

Created an issue in github. Please refer https://github.com/intel-iot-devkit/mraa/issues/82.

topic Intel Edison spi read error in Software Archive

Intel Edison spi read error

Created an issue in github.