SPI master disable recieve

RE: SPI master disable recieve

Sebastian — Mon, 27 Jul 2015 10:57:36 GMT

Look at SPI master driver in SDK 9.0.0 - it should support zero length RX buffer.

In case you don't want to connect MISO line, during initialization you may declare it as unused: NRF_DRV_SPI_PIN_NOT_USED.

RE: SPI master disable recieve

Francesco F — Sun, 26 Jul 2015 21:58:56 GMT

Hi guys, I'm experiencing a similar problem: I'm working with a sharp memory lcd and my code for transmission was

spi_master_send_recv(SPI_MASTER_0, linebuff, linebuff_len, NULL, 0);

For the moment it's not working.. Is that a bad idea to have put rx_buff to NULL and rx_buff_len to 0?

Thanks in advance for the hint :)

RE: SPI master disable recieve

Stian Røed Hafskjold — Wed, 08 Jul 2015 13:30:38 GMT

Did you set the SPI master frequency to the highest? You can change the frequency when you initialize the module. Please have a look at the documentation here: developer.nordicsemi.com/.../a00012.html

I don't think removing any use of the receive buffer will actually speed up anything.