32-BITS SPI READ

RE: 32-BITS SPI READ

Marte Myrvold — Mon, 23 Jan 2023 07:28:37 GMT

Hi Gianmarco,

Most likely, yes. You can use .count=1 instead.

Best regards,

Marte

RE: 32-BITS SPI READ

gianmarcod — Sat, 21 Jan 2023 14:20:53 GMT

Hi Marte,

Thanks for your feedback. I usually set .count=1, which is probably wrong.

Setting count=ARRAY_SIZE(rx_buf) triggers the error you can see in the picture below.

Do you think that it may be due to the fact that spi_buf has size 1?

Regards,

Gianmarco

RE: 32-BITS SPI READ

Marte Myrvold — Fri, 20 Jan 2023 14:06:00 GMT

Hi Gianmarco,

For 32-bit (or 4 byte) you can do the following:

static uint8_t rx_buffer[4];

const struct spi_buf rx_buf = {
   .buf = rx_buffer,
   .len = sizeof(rx_buffer)
}

const struct spi_buf_set rx = {
   .buffers = &rx_buf,
   .count = ARRAY_SIZE(rx_buf)
}

Best regards,

Marte