SPI slave driver sometime receive empty data

RE: SPI slave driver sometime receive empty data

Sylar — Wed, 16 Dec 2020 03:04:48 GMT

Hi haakonsh

Thanks for your effort,

We have found the root cause of this issue. Since nRF board voltage level is not match with my Master board (Total phase VAARDVARK),

Once I add below code to pullup spis signal, the event can be received correctly

spis_config.csn_pullup = NRF_GPIO_PIN_PULLUP;

RE: SPI slave driver sometime receive empty data

haakonsh — Tue, 15 Dec 2020 08:46:11 GMT

I think the memset(m_rx_buf, 0x01, m_length); call in the main loop is at fault. Since both this call and NRF_LOG_FLUSH(); both run in the main's context and you have no way of controlling whether your logs are printed before you erase the rx buffer or not.