Low Speed Serial Interface mode support in SPI

[Thangaraj]

Hi All,

We are interfacing Nordic nRF52832 with our Display using SPI interface. As per display, Data / Command bit needs to be set at the beginning of transfer. Using this bit, Display differentiates Data and Command.

Below is the Technical note from Display datasheet: "The write mode of the interface means the micro controller writes commands and data to the LCD driver. 3-pins serial data packet contains a control bit D/CX and a transmission byte and in 4-pins serial case, data packet contains just transmission byte and control bit D/CX is transferred by the D/CX pin. If D/CX is “low”, the transmission byte is interpreted as a command byte. If D/CX is “high”, the transmission byte is stored in the display data RAM (Memory write command), or command register as parameter"

Please Let me know How nRF52 can be used to support this.

Thanks.

[Wojtek]

I think you just have to manually handle this before calling spi transactions. Just set/clr that D/CX pin when needed...

[Thangaraj]

This Suggestion We tried and it works