Device reset happening and i can't able to upload the code

Question

Hello, 
 In my project i am using nrf52840 with my custom board and to upload the code through NRF_CONNECT application with soft device its uploading properly but with segger emmbedded its giving some error like this .please have look and let me know what is the problem. 
 
 after this i have add DEBUG in preprocessor definition and i got this

thank you.

Simonr · Accepted Answer

Hi Sorry, but you can check out the Serial Power Library example with two UARTEs that is in the nRF5 SDK v16.0.0. It was removed for later versions for some reason, but should show how to set up two UART instances. Here's the source code: /** * Copyright (c) 2018 - 2019, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include #include #include #include "nrf.h" #include "nrf_drv_clock.h" #include "nrf_gpio.h" #include "nrf_delay.h" #include "nrf_log.h" #include "nrf_log_ctrl.h" #include "nrf_drv_power.h" #include "nrf_serial.h" #include "app_timer.h" #include "app_error.h" #include "app_util.h" #include "boards.h" /** @file * @defgroup nrf_serial_uartes_example main.c * @{ * @ingroup nrf_serial_uartes_example * @brief Example of @ref nrf_serial usage. Loopback example using two UARTE peripherals. * Please short Arduino SCL and SDA GPIOs to start transmission. * */ #define OP_QUEUES_SIZE 3 #define APP_TIMER_PRESCALER NRF_SERIAL_APP_TIMER_PRESCALER static void sleep_handler(void) { __WFE(); __SEV(); __WFE(); } NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uarte0_drv_config, RX_PIN_NUMBER, ARDUINO_SCL_PIN, RTS_PIN_NUMBER, CTS_PIN_NUMBER, NRF_UART_HWFC_DISABLED, NRF_UART_PARITY_EXCLUDED, NRF_UART_BAUDRATE_115200, UART_DEFAULT_CONFIG_IRQ_PRIORITY); NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uarte1_drv_config, ARDUINO_SDA_PIN, TX_PIN_NUMBER, RTS_PIN_NUMBER, CTS_PIN_NUMBER, NRF_UART_HWFC_DISABLED, NRF_UART_PARITY_EXCLUDED, NRF_UART_BAUDRATE_115200, UART_DEFAULT_CONFIG_IRQ_PRIORITY); #define SERIAL_FIFO_TX_SIZE 32 #define SERIAL_FIFO_RX_SIZE 32 NRF_SERIAL_QUEUES_DEF(serial0_queues, SERIAL_FIFO_TX_SIZE, SERIAL_FIFO_RX_SIZE); NRF_SERIAL_QUEUES_DEF(serial1_queues, SERIAL_FIFO_TX_SIZE, SERIAL_FIFO_RX_SIZE); #define SERIAL_BUFF_TX_SIZE 1 #define SERIAL_BUFF_RX_SIZE 1 NRF_SERIAL_BUFFERS_DEF(serial0_buffs, SERIAL_BUFF_TX_SIZE, SERIAL_BUFF_RX_SIZE); NRF_SERIAL_BUFFERS_DEF(serial1_buffs, SERIAL_BUFF_TX_SIZE, SERIAL_BUFF_RX_SIZE); NRF_SERIAL_CONFIG_DEF(serial0_config, NRF_SERIAL_MODE_DMA, &serial0_queues, &serial0_buffs, NULL, sleep_handler); NRF_SERIAL_CONFIG_DEF(serial1_config, NRF_SERIAL_MODE_DMA, &serial1_queues, &serial1_buffs, NULL, sleep_handler); NRF_SERIAL_UART_DEF(serial0_uarte, 0); NRF_SERIAL_UART_DEF(serial1_uarte, 1); int main(void) { ret_code_t ret; ret = nrf_drv_clock_init(); APP_ERROR_CHECK(ret); ret = nrf_drv_power_init(NULL); APP_ERROR_CHECK(ret); nrf_drv_clock_lfclk_request(NULL); ret = app_timer_init(); APP_ERROR_CHECK(ret); // Initialize LEDs and buttons. bsp_board_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS); ret = nrf_serial_init(&serial0_uarte, &m_uarte0_drv_config, &serial0_config); APP_ERROR_CHECK(ret); ret = nrf_serial_init(&serial1_uarte, &m_uarte1_drv_config, &serial1_config); APP_ERROR_CHECK(ret); static char tx_message[] = "Hello nrf_serial! "; ret = nrf_serial_write(&serial1_uarte, tx_message, strlen(tx_message), NULL, NRF_SERIAL_MAX_TIMEOUT); (void)nrf_serial_flush(&serial1_uarte, 0); while (true) { char c; ret = nrf_serial_read(&serial0_uarte, &c, sizeof(c), NULL, 1000); if (ret != NRF_SUCCESS) { continue; } (void)nrf_serial_write(&serial0_uarte, &c, sizeof(c), NULL, 0); (void)nrf_serial_flush(&serial0_uarte, 0); ret = nrf_serial_read(&serial1_uarte, &c, sizeof(c), NULL, 1000); if (ret != NRF_SUCCESS) { continue; } (void)nrf_serial_write(&serial1_uarte, &c, sizeof(c), NULL, 0); (void)nrf_serial_flush(&serial1_uarte, 0); } } /** @} */ Best regards, Simon

Device reset happening and i can't able to upload the code

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