DA1469x

Hello,

I'm new on Dialog, and I using DA14695 & USB DK to studing sample code (SDK version: 10.0.8.105, WIRA 10.440.8.6).

I tried to use the SPI module and recorded the SPI waveform with LA, and found that the CS pin took too long.

My SPI speed is 4MHz, CLK timing about 0.25us / bit, but it took nearly 90us for CS to go from low to hi...

Timing chart like:

CS pin low ---------- wait 40us ---------- 9-bit data (total 3us) ---------- wait 40us ---------- CS pin high

Hello,

I'm new on Dialog, and I using DA14695 & USB DK to studing sample code (SDK version: 10.0.8.105, WIRA 10.440.8.6).

Now I try to implement SPI function, SPI1 8 bit mode is work properly, but now I need set SPI1 to 9 bit transfer mode.

On 9 bit mode, SPI clk seems OK (9 clocks in one data), but MOSI's highest bit is always 0. (Ex: 0x0AA, 0x0BF...)

Due to SPI buffer is "uint8_t", so I dont know how to set the 9th bit to 1...

How can I send 9 bit data like 0x1AA, 0x1BF?

Thanks!