Send data received on ble nus to SPI

RE: Send data received on ble nus to SPI

Satyamkr80 — Thu, 25 Jul 2019 11:46:00 GMT

yes, i ressolved this issue by increasing the receving packet size m_rx_buf

#define TEST_STRING "Nordic"
static uint8_t m_tx_buf[] = TEST_STRING; /**< TX buffer. */
static uint8_t m_rx_buf[sizeof(TEST_STRING) + 1]; /**< RX buffer. */

RE: Send data received on ble nus to SPI

awneil — Thu, 25 Jul 2019 11:41:24 GMT

so has that also fixed the problem with receiving only 6 bytes?

RE: Send data received on ble nus to SPI

awneil — Thu, 25 Jul 2019 11:38:28 GMT

again, have you got this working without BLE ?

Have you used an oscilloscope to see what's happening on the wires?

RE: Send data received on ble nus to SPI

Satyamkr80 — Thu, 25 Jul 2019 11:38:00 GMT

hi awneil,

Actually problem was with variable definition inside nrf_drv_spi_transfer, now its working fine after using this line

nrf_drv_spi_transfer(&spi, p_evt->params.rx_data.p_data, p_evt->params.rx_data.length, NULL, 0);

RE: Send data received on ble nus to SPI

Satyamkr80 — Thu, 25 Jul 2019 11:31:42 GMT

hi,

it worked ! Thanks

But i am receiving only 6 bytes on spis side, note more than that?

for example, if i am sending "abcdefg" i am receiving only "abcdef" at slave board.

RE: Send data received on ble nus to SPI

awneil — Thu, 25 Jul 2019 11:24:12 GMT

[quote userid="79478" url="~/f/nordic-q-a/50138/send-data-received-on-ble-nus-to-spi"] i am not able to receive data on spi[/quote]

Are you certain that the data is actually being transmitted ?

Have you used an oscilloscope to see what's happening on the wires?

[quote userid="79478" url="~/f/nordic-q-a/50138/send-data-received-on-ble-nus-to-spi/200486"]on other side i am using another board with spis example[/quote]

Have you got this working without BLE ?

RE: Send data received on ble nus to SPI

Satyamkr80 — Thu, 25 Jul 2019 11:18:41 GMT

on other side i am using another board with spis example, i am not getting any error while sending data, but receiving no output at spis board,

Now i will try the solution provided by you, then i will update the same here.

RE: Send data received on ble nus to SPI

Jørgen Holmefjord — Thu, 25 Jul 2019 11:11:31 GMT

Hi,

What is on the other side of the SPI bus? Do you get any error codes when trying to send the data with nrf_drv_spi_transfer()?

It may not be a good idea to place the call inside the for-loop. The SPI can send the whole buffer in one transfer. Try something like this before the for-loop:

nrf_drv_spi_transfer(&spi, p_evt->params.rx_data.p_data, p_evt->params.rx_data.length, NULL, 0);

(I set the RX buffer to 0, as I do not know if you expect any response from the SPI slave).

Best regards,
Jørgen