unexpected error from APP_UART_INIThttps://devzone.nordicsemi.com/f/nordic-q-a/29737/unexpected-error-from-app_uart_initSDK 12.2 on nrf52 custom board uint32_t err_code; const app_uart_comm_params_t comm_params = { RX_PIN_NUMBER, TX_PIN_NUMBER, RTS_PIN_NUMBER, CTS_PIN_NUMBER, APP_UART_FLOW_CONTROL_DISABLED, false, UART_BAUDRATE_BAUDRATE_Baud57600 };en-USTelligent Community 13Thu, 25 Jan 2018 17:59:45 GMTRE: unexpected error from APP_UART_INIThttps://devzone.nordicsemi.com/thread/117963?ContentTypeID=1Thu, 25 Jan 2018 17:59:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a9faa13d-0c18-4079-bf5a-28a39a0bad9fJoakim Jakobsen<p>I´m glad to hear that fixed your problem!<br /> I updated my comment to an answer.<br /> Best regards.</p><div style="clear:both;"></div>RE: unexpected error from APP_UART_INIThttps://devzone.nordicsemi.com/thread/117962?ContentTypeID=1Thu, 25 Jan 2018 16:10:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a3ee7864-6cc5-4ed6-8594-58f6626e14b9paul_tanner<p>Thx @Joakim Yes. Error code 7 is indeed NRF_ERROR_INVALID_PARAM. I had switched from APP_UART_FIFO_INIT without altering the Makefile. I do not get why the linker did not pick the fact that I was still referencing app_uart_fifo_init. Anyway, referencing the right .c file seems to have fixed it.</p><div style="clear:both;"></div>RE: unexpected error from APP_UART_INIThttps://devzone.nordicsemi.com/thread/117961?ContentTypeID=1Thu, 25 Jan 2018 14:05:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b936d888-41d2-4c64-98b3-a9f097c09685Joakim Jakobsen<p>Hi Paul.<br /> You can find the complete list of error codes in the <code>nrf_error.h</code> header file.<br /> The list can also be found in our all-knowing <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v3.0.0/group__nrf__error.html?cp=2_3_1_1_2_2_0_7">infocenter</a>.</p> <p>The infocenter also states this about <code>NRF_ERROR_INVALID_PARAM</code>:</p> <blockquote> <p>When Hardware Flow Control is not used, these errors cannot occur.</p> </blockquote> <p>Maybe you could take a look at <a href="https://devzone.nordicsemi.com/question/92697/uart-init-without-fifo/">this post</a>, and see if that could be helpful?</p> <p>Best regards,<br /> Joakim.</p><div style="clear:both;"></div>