RE: How to clear UARTE buffer?

Lurn_Z — Fri, 03 Mar 2023 08:24:45 GMT

Ok,I used the method of judging the data header to solve the data split, and test OK.

{
        if (!nrf_queue_is_empty(&m_buf_queue))
        {
            buffer_t buf;
            err_code = nrf_queue_pop(&m_buf_queue, &buf);
            APP_ERROR_CHECK(err_code);
            err_code = nrf_libuarte_async_tx(&libuarte, buf.p_data, buf.length);
            APP_ERROR_CHECK(err_code);
            if(buf.p_data[0] == 0x5A && (buf.p_data[1] == 0xC4 || buf.p_data[1] == 0xC5))
            {
                memset(data_array, 0, sizeof(data_array));
                index = 0;
                memcpy(&data_array[index], buf.p_data, buf.length);
                index = buf.length;
            }
            else
            {
                memcpy(&data_array[index], buf.p_data, buf.length);
                index += buf.length;
            }
        }
}

RE: How to clear UARTE buffer?

Lurn_Z — Fri, 03 Mar 2023 05:56:27 GMT

Here's what's happening:

I initialised 3 buffers, each of 32 bytes wide.

I use another system sends a 30 bytes data.

Everything works as expected. I get an event after 30 bytes.

After that, I again get an event from the other system, as expected, because one buffer is filled. And then the buffer fills from start.

What I want is this:

After I process a response from the other device, I want to reset the write location of Rx buffer so that it starts from beginning.