In my application, I have implemented Serial Recovery. The interface used for the transfer is UART0, which I also use in my application at a baud rate of 1M. When I enter MCUboot to update the firmware, I set a baud rate of 1M in mcumgr, but the update speed is extremely slow.
I would like to try reducing the baud rate in MCUboot to see if the issue is related to speed.
How can I set UART0 to 1M for my application and 115200 for MCUboot?
I tried modifying my device tree, but I couldn't find a solution. Does anyone have any suggestions?
Below is my device tree:
/dts-v1/;
#include <nordic/nrf52840_qiaa.dtsi>
#include "my_board-pinctrl.dtsi"
#include <zephyr/dt-bindings/input/input-event-codes.h>
/ {
model = "My Board";
compatible = "vendor,my_board";
chosen {
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
zephyr,uart-mcumgr = &uart0;
zephyr,flash-controller = &flash_controller;
};
leds {
compatible = "gpio-leds";
led_red: led_0 {
gpios = < &gpio0 8 GPIO_ACTIVE_LOW>;
label = "Led Red";
};
led_green: led_1 {
gpios = < &gpio1 9 GPIO_ACTIVE_LOW >;
label = "Led Green";
};
led_blue: led_2 {
gpios = < &gpio0 12 GPIO_ACTIVE_LOW >;
label = "Led Blue";
};
};
pwmleds {
compatible = "pwm-leds";
pwm_led_red: pwm_led_red {
pwms = <&pwm0 0 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
label = "Pwm Led Red";
};
pwm_led_green: pwm_led_green {
pwms = <&pwm1 1 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
label = "Pwm Led Green";
};
pwm_led_blue: pwm_led_blue {
pwms = <&pwm2 2 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
label = "Pwm Led Blue";
};
};
buttons {
compatible = "gpio-keys";
button0: button_0 {
gpios = <&gpio0 07 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
label = "Push button switch 0";
zephyr,code = <INPUT_KEY_0>;
};
};
aliases {
mcuboot-button0 = &button0;
mcuboot-led0 = &led_blue;
};
};
&gpio1 {
status = "okay";
};
&gpio0 {
status = "okay";
};
&gpiote {
status = "okay";
};
&pwm0 {
status = "okay";
pinctrl-0 = <&pwm0_default>;
pinctrl-1 = <&pwm0_sleep>;
pinctrl-names = "default", "sleep";
};
&pwm1 {
status = "okay";
pinctrl-0 = <&pwm1_default>;
pinctrl-1 = <&pwm1_sleep>;
pinctrl-names = "default", "sleep";
};
&pwm2 {
status = "okay";
pinctrl-0 = <&pwm2_default>;
pinctrl-1 = <&pwm2_sleep>;
pinctrl-names = "default", "sleep";
};
&uart0 {
compatible = "nordic,nrf-uarte";
status = "okay";
current-speed = <1000000>;
pinctrl-0 = <&uart0_default>;
pinctrl-1 = <&uart0_sleep>;
pinctrl-names = "default", "sleep";
};
&flash0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(48)>;
};
slot0_partition: partition@c000 {
label = "image-0";
reg = <0x0000c000 DT_SIZE_K(472)>;
};
slot1_partition: partition@82000 {
label = "image-1";
reg = <0x00082000 DT_SIZE_K(472)>;
};
storage_partition: partition@f8000 {
label = "storage";
reg = <0x000f8000 0x00008000>;
};
};
};
