How can I properly set up the SWD interface for printk on a custom PCB? I have to build my project example and see the message printed on the VS Code console. My custom hardware does not have a UART connection broken out and I am programming my custom hardware over SWD with a nrf53DK board. I tried other solutions but none of them worked. This is my setup:
dts file:
/ {
model = "Atreides";
compatible = "lA,atreides";
chosen {
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_ns_partition;
zephyr,console = &uart2;
zephyr,shell-uart = &uart2;
zephyr,bt-uart = &uart2;
zephyr,bt-mon-uart = &uart2;
zephyr,bt-c2h-uart = &uart2;
zephyr,bt-hci-rpmsg-ipc = &ipc0;
};
zephyr,user {
EN_GATE-gpios = <&gpio0 0 0>;
OC_ADJ-gpios = <&gpio0 1 0>;
NFAULT-gpios = <&gpio0 2 0>;
M_OC-gpios = <&gpio0 4 0>;
NOCTW-gpios = <&gpio0 3 0>;
Stepper3_EN-gpios = <&gpio0 6 0>;
Stepper4_STEP-gpios = <&gpio0 8 0>;
Stepper3_STEP-gpios = <&gpio0 7 0>;
Stepper4_EN-gpios = <&gpio0 9 0>;
Stepper4_DIR-gpios = <&gpio0 10 0>;
Fan_Enable-gpios = <&gpio0 11 0>;
Stepper1_DIR-gpios = <&gpio0 26 0>;
Stepper1_STEP-gpios = <&gpio0 27 0>;
Stepper1_EN-gpios = <&gpio0 30 0>;
Stepper2_DIR-gpios = <&gpio0 31 0>;
Stepper3_DIR-gpios = <&gpio1 3 0>;
Stepper2_STEP-gpios = <&gpio1 11 0>;
Stepper2_EN-gpios = <&gpio1 13 0>;
INH_A-gpios = <&gpio1 1 0>;
INH_B-gpios = <&gpio1 0 0>;
INH_C-gpios = <&gpio1 15 0>;
INL_A-gpios = <&gpio0 12 0>;
INL_B-gpios = <&gpio0 29 0>;
INL_C-gpios = <&gpio1 10 0>;
SX1280_M1-gpios = <&gpio1 6 0>;
SX1280_M2-gpios = <&gpio1 4 0>;
SX1280_M0-gpios = <&gpio0 23 0>;
};
};
&flash0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
boot_partition: partition@0 {
label = "mcuboot";
reg = <0x0 0x10000>;
};
slot0_partition: partition@10000 {
label = "image-0";
reg = <0x10000 0x40000>;
};
slot0_ns_partition: partition@50000 {
label = "image-0-nonsecure";
reg = <0x50000 0x30000>;
};
slot1_partition: partition@80000 {
label = "image-1";
reg = <0x80000 0x40000>;
};
slot1_ns_partition: partition@c0000 {
label = "image-1-nonsecure";
reg = <0xc0000 0x30000>;
};
scratch_partition: partition@f0000 {
label = "image-scratch";
reg = <0xf0000 0xa000>;
};
storage_partition: partition@fa000 {
label = "storage";
reg = <0xfa000 0x6000>;
};
};
};
/* Default shared SRAM planning when building for nRF5340.
* This file is included by both nRF5340 CPUAPP (Application MCU)
* and nRF5340 CPUNET (Network MCU).
* - 64 kB SRAM allocated as Shared memory (sram0_shared)
* - Region defined after the image SRAM of Application MCU
*/
/ {
chosen {
/* shared memory reserved for the inter-processor communication */
zephyr,ipc_shm = &sram0_shared;
};
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;
sram0_shared: memory@20070000 {
/* SRAM allocated to shared memory */
reg = <0x20070000 0x10000>;
};
};
};
&gpio0 {
status = "okay";
};
&gpio1 {
status = "okay";
};
&i2c1 {
WPS_front: WPS_front@77{
compatible = "i2c-device";
reg = < 0x77 >;
label = "WPS_front";
};
VisionController: VisionController@50{
compatible = "i2c-device";
reg = < 0x50 >;
label = "VisionController";
};
clock-frequency = <I2C_BITRATE_STANDARD>;
status = "okay";
pinctrl-0 = <&i2c1_default>;
pinctrl-names = "default";
};
&i2c0 {
//BMI270
bmi_270: bmi_270@69{
compatible = "i2c-device";
reg = < 0x69 >;
label = "BMI270-IMU";
};
//Multiplexer with IMUs
BUS_0_MUX_1: BUS_0_MUX_1@70{
compatible = "i2c-device";
reg = < 0x70 >;
label = "BUS_0_MUX_1";
};
WPS_rear: WPS_rear@77{
compatible = "i2c-device";
reg = < 0x77 >;
label = "WPS_rear";
};
status = "okay";
pinctrl-0 = <&i2c0_default>;
pinctrl-names = "default";
};
&uart2 {
GPS {
compatible = "uart-device";
};
status = "okay";
pinctrl-0 = <&uart2_default>;
pinctrl-names = "default";
current-speed = <115200>;
};
&uart3 {
SX1280 {
compatible = "uart-device";
};
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&uart3_default>;
pinctrl-names = "default";
};
&spi4 {
status = "okay";
pinctrl-0 = <&spi4_default>;
pinctrl-names = "default";
cs-gpios = <&gpio1 5 0>;
};
&rtc0 {
status = "disabled";
};
&qspi {
status = "okay";
pinctrl-0 = <&qspi_default>;
pinctrl-names = "default";
};
&adc {
status = "disabled";
};
&gpiote1 {
status = "okay";
};
deconfig:# Copyright (c) 2024 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0
CONFIG_SOC_SERIES_NRF53X=y
CONFIG_SOC_NRF5340_CPUAPP_QKAA=y
CONFIG_BOARD_ATREIDES=y
# Enable MPU
CONFIG_ARM_MPU=y
# Enable hardware stack protection
CONFIG_HW_STACK_PROTECTION=y
# Enable TrustZone-M
CONFIG_ARM_TRUSTZONE_M=y
# This Board implies building Non-Secure firmware
CONFIG_TRUSTED_EXECUTION_NONSECURE=y
# enable GPIO
CONFIG_GPIO=y
# enable PINCTRL
CONFIG_PINCTRL=y
# Enable uart driver
CONFIG_SERIAL=y
# enable console
CONFIG_UART_CONSOLE=n
CONFIG_CONSOLE=y
# Enable RTT
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_LOG=y
prj.conf:CONFIG_I2C=y
CONFIG_BT=y
CONFIG_BT_DEVICE_NAME="BT-DEV"
CONFIG_PWM=y
CONFIG_UART_ASYNC_API=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_GATT_CLIENT=y
CONFIG_BT_GAP_AUTO_UPDATE_CONN_PARAMS=y
# STEP 12 - Update Data Length and MTU
CONFIG_BT_USER_DATA_LEN_UPDATE=y
CONFIG_BT_CTLR_DATA_LENGTH_MAX=251
CONFIG_BT_BUF_ACL_RX_SIZE=251
CONFIG_BT_BUF_ACL_TX_SIZE=251
CONFIG_BT_L2CAP_TX_MTU=247
# Increase stack size for the main thread and System Workqueue
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_MAIN_STACK_SIZE=2048
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_NRF53_SYNC_RTC=n
CONFIG_LOG_PRINTK=y
CONFIG_PRINTK=y
main.c
#include <zephyr/kernel.h>
#include <zephyr/sys/printk.h>
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(AtreidesLogs,LOG_LEVEL_DBG);
int main(void)
{
printk("Init Test");
LOG_DBG("A log message in debug level");
while(1){
printk("Init Test");
k_sleep(K_MSEC(1000));
}
}
RTT Output:SEGGER J-Link V7.88j - Real time terminal output
SEGGER J-Link (unknown) V1.0, SN=1050051574
Process: JLinkExe
