lvgl sample code build is not working

[bilal7317]

I am trying to build basic LVGL code and it is giving me the following error. I did not customize the code.

https://github.com/nrfconnect/sdk-zephyr/tree/v3.4.99-ncs1-rc2/samples/subsys/display/lvgl/ 

prj.conf


CONFIG_LV_Z_MEM_POOL_NUMBER_BLOCKS=8
CONFIG_LV_Z_SHELL=y
CONFIG_MAIN_STACK_SIZE=2048

CONFIG_DISPLAY=y
CONFIG_DISPLAY_LOG_LEVEL_ERR=y

CONFIG_LOG=y
CONFIG_SHELL=y

CONFIG_LVGL=y
CONFIG_LV_MEM_CUSTOM=y
CONFIG_LV_USE_LOG=y
CONFIG_LV_USE_LABEL=y
CONFIG_LV_USE_BTN=y
CONFIG_LV_USE_IMG=y
CONFIG_LV_USE_MONKEY=y
CONFIG_LV_FONT_MONTSERRAT_14=y

nrf52dk_nrf52832_deconfig



# SPDX-License-Identifier: Apache-2.0

CONFIG_SOC_SERIES_NRF52X=y
CONFIG_SOC_NRF52832_QFAA=y
CONFIG_BOARD_NRF52DK_NRF52832=y

# Enable MPU
CONFIG_ARM_MPU=y

# Enable hardware stack protection
CONFIG_HW_STACK_PROTECTION=y

# Enable RTT
CONFIG_USE_SEGGER_RTT=y

# enable GPIO
CONFIG_GPIO=y

# enable uart driver
CONFIG_SERIAL=y

# enable console
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y

CONFIG_PINCTRL=y

nrf52dk_nrf52832.dts


/*
 * Copyright (c) 2017 Shawn Nock <[e-mail]>
 * Copyright (c) 2017 Linaro Limited
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <nordic/nrf52832_qfaa.dtsi>
#include "nrf52dk_nrf52832-pinctrl.dtsi"
#include <zephyr/dt-bindings/input/input-event-codes.h>

/ {
	model = "Nordic nRF52 DK NRF52832";
	compatible = "nordic,nrf52-dk-nrf52832";

	chosen {
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,uart-mcumgr = &uart0;
		zephyr,bt-mon-uart = &uart0;
		zephyr,bt-c2h-uart = &uart0;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
	};

	leds {
		compatible = "gpio-leds";
		led0: led_0 {
			gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
			label = "Green LED 0";
		};
		led1: led_1 {
			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
			label = "Green LED 1";
		};
		led2: led_2 {
			gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
			label = "Green LED 2";
		};
		led3: led_3 {
			gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
			label = "Green LED 3";
		};
	};

	pwmleds {
		compatible = "pwm-leds";
		pwm_led0: pwm_led_0 {
			pwms = <&pwm0 0 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
		};
	};

	buttons {
		compatible = "gpio-keys";
		button0: button_0 {
			gpios = <&gpio0 13 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "Push button switch 0";
			zephyr,code = <INPUT_KEY_0>;
		};
		button1: button_1 {
			gpios = <&gpio0 14 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "Push button switch 1";
			zephyr,code = <INPUT_KEY_1>;
		};
		button2: button_2 {
			gpios = <&gpio0 15 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "Push button switch 2";
			zephyr,code = <INPUT_KEY_2>;
		};
		button3: button_3 {
			gpios = <&gpio0 16 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "Push button switch 3";
			zephyr,code = <INPUT_KEY_3>;
		};
	};

	arduino_header: connector {
		compatible = "arduino-header-r3";
		#gpio-cells = <2>;
		gpio-map-mask = <0xffffffff 0xffffffc0>;
		gpio-map-pass-thru = <0 0x3f>;
		gpio-map = <0 0 &gpio0 3 0>,	/* A0 */
			   <1 0 &gpio0 4 0>,	/* A1 */
			   <2 0 &gpio0 28 0>,	/* A2 */
			   <3 0 &gpio0 29 0>,	/* A3 */
			   <4 0 &gpio0 30 0>,	/* A4 */
			   <5 0 &gpio0 31 0>,	/* A5 */
			   <6 0 &gpio0 11 0>,	/* D0 */
			   <7 0 &gpio0 12 0>,	/* D1 */
			   <8 0 &gpio0 13 0>,	/* D2 */
			   <9 0 &gpio0 14 0>,	/* D3 */
			   <10 0 &gpio0 15 0>,	/* D4 */
			   <11 0 &gpio0 16 0>,	/* D5 */
			   <12 0 &gpio0 17 0>,	/* D6 */
			   <13 0 &gpio0 18 0>,	/* D7 */
			   <14 0 &gpio0 19 0>,	/* D8 */
			   <15 0 &gpio0 20 0>,	/* D9 */
			   <16 0 &gpio0 22 0>,	/* D10 */
			   <17 0 &gpio0 23 0>,	/* D11 */
			   <18 0 &gpio0 24 0>,	/* D12 */
			   <19 0 &gpio0 25 0>,	/* D13 */
			   <20 0 &gpio0 26 0>,	/* D14 */
			   <21 0 &gpio0 27 0>;	/* D15 */
	};

	arduino_adc: analog-connector {
		compatible = "arduino,uno-adc";
		#io-channel-cells = <1>;
		io-channel-map = <0 &adc 1>,	/* A0 = P0.3 = AIN1 */
				 <1 &adc 2>,	/* A1 = P0.4 = AIN2 */
				 <2 &adc 4>,	/* A2 = P0.28 = AIN4 */
				 <3 &adc 5>,	/* A3 = P0.29 = AIN5 */
				 <4 &adc 6>,	/* A4 = P0.30 = AIN6 */
				 <5 &adc 7>;	/* A5 = P0.31 = AIN7 */
	};

	/* These aliases are provided for compatibility with samples */
	aliases {
		led0 = &led0;
		led1 = &led1;
		led2 = &led2;
		led3 = &led3;
		pwm-led0 = &pwm_led0;
		sw0 = &button0;
		sw1 = &button1;
		sw2 = &button2;
		sw3 = &button3;
		bootloader-led0 = &led0;
		mcuboot-button0 = &button0;
		mcuboot-led0 = &led0;
		watchdog0 = &wdt0;
	};
};

&adc {
	status = "okay";
};

&uicr {
	gpio-as-nreset;
};

&gpiote {
	status = "okay";
};

&gpio0 {
	status = "okay";
};

arduino_serial: &uart0 {
	status = "okay";
	compatible = "nordic,nrf-uarte";
	current-speed = <115200>;
	pinctrl-0 = <&uart0_default>;
	pinctrl-1 = <&uart0_sleep>;
	pinctrl-names = "default", "sleep";
};

arduino_i2c: &i2c0 {
	compatible = "nordic,nrf-twi";
	status = "okay";
	pinctrl-0 = <&i2c0_default>;
	pinctrl-1 = <&i2c0_sleep>;
	pinctrl-names = "default", "sleep";
};

&i2c1 {
	compatible = "nordic,nrf-twi";
	/* Cannot be used together with spi1. */
	/* status = "okay"; */
	pinctrl-0 = <&i2c1_default>;
	pinctrl-1 = <&i2c1_sleep>;
	pinctrl-names = "default", "sleep";
};

&pwm0 {
	status = "okay";
	pinctrl-0 = <&pwm0_default>;
	pinctrl-1 = <&pwm0_sleep>;
	pinctrl-names = "default", "sleep";
};

&spi0 {
	compatible = "nordic,nrf-spi";
	/* Cannot be used together with i2c0. */
	/* status = "okay"; */
	pinctrl-0 = <&spi0_default>;
	pinctrl-1 = <&spi0_sleep>;
	pinctrl-names = "default", "sleep";
};

&spi1 {
	compatible = "nordic,nrf-spi";
	status = "okay";
	pinctrl-0 = <&spi1_default>;
	pinctrl-1 = <&spi1_sleep>;
	pinctrl-names = "default", "sleep";
};

arduino_spi: &spi2 {
	compatible = "nordic,nrf-spi";
	status = "okay";
	cs-gpios = <&arduino_header 16 GPIO_ACTIVE_LOW>; /* D10 */
	pinctrl-0 = <&spi2_default>;
	pinctrl-1 = <&spi2_sleep>;
	pinctrl-names = "default", "sleep";
};

&flash0 {

	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x00000000 0xc000>;
		};
		slot0_partition: partition@c000 {
			label = "image-0";
			reg = <0x0000C000 0x37000>;
		};
		slot1_partition: partition@43000 {
			label = "image-1";
			reg = <0x00043000 0x37000>;
		};
		storage_partition: partition@7a000 {
			label = "storage";
			reg = <0x0007a000 0x00006000>;
		};
	};
};

Error:

main.c.obj -c ../src/main.c
In file included from C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\toolchain\gcc.h:92,
from C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\toolchain.h:50,
from C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\sys\time_units.h:10,
from C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\sys\util.h:615,
from C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\devicetree.h:25,
from C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:12,
from d:\nrf\test_proj\test\lvgl\src\main.c:7:
../src/main.c: In function 'main':
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:85:41: error: '__device_dts_ord_DT_CHOSEN_zephyr_display_ORD' undeclared (first use in this function)
85 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
| ^~~~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\toolchain\common.h:132:26: note: in definition of macro '_DO_CONCAT'
132 | #define _DO_CONCAT(x, y) x ## y
| ^
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:85:33: note: in expansion of macro '_CONCAT'
85 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
| ^~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:211:37: note: in expansion of macro 'DEVICE_NAME_GET'
211 | #define DEVICE_DT_NAME_GET(node_id) DEVICE_NAME_GET(Z_DEVICE_DT_DEV_ID(node_id))
| ^~~~~~~~~~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:228:34: note: in expansion of macro 'DEVICE_DT_NAME_GET'
228 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
| ^~~~~~~~~~~~~~~~~~
d:\nrf\test_proj\test\lvgl\src\main.c:46:23: note: in expansion of macro 'DEVICE_DT_GET'
46 | display_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display));
| ^~~~~~~~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:85:41: note: each undeclared identifier is reported only once for each function it appears in
85 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
| ^~~~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\toolchain\common.h:132:26: note: in definition of macro '_DO_CONCAT'
132 | #define _DO_CONCAT(x, y) x ## y
| ^
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:85:33: note: in expansion of macro '_CONCAT'
85 | #define DEVICE_NAME_GET(dev_id) _CONCAT(__device_, dev_id)
| ^~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:211:37: note: in expansion of macro 'DEVICE_NAME_GET'
211 | #define DEVICE_DT_NAME_GET(node_id) DEVICE_NAME_GET(Z_DEVICE_DT_DEV_ID(node_id))
| ^~~~~~~~~~~~~~~
C:\ncs\v2.5.0-rc2\zephyr\include\zephyr\device.h:228:34: note: in expansion of macro 'DEVICE_DT_NAME_GET'
228 | #define DEVICE_DT_GET(node_id) (&DEVICE_DT_NAME_GET(node_id))
| ^~~~~~~~~~~~~~~~~~
d:\nrf\test_proj\test\lvgl\src\main.c:46:23: note: in expansion of macro 'DEVICE_DT_GET'
46 | display_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display));
| ^~~~~~~~~~~~~
[48/357] Building C object zephyr/CMakeFiles/zephyr.dir/lib/os/printk.c.obj
[49/357] Building C object zephyr/CMakeFiles/zephyr.dir/lib/posix/getopt/getopt.c.obj
[50/357] Building C object zephyr/CMakeFiles/zephyr.dir/lib/os/cbprintf_packaged.c.obj
[51/357] Building ASM object zephyr/arch/arch/arm/core/aarch32/CMakeFiles/arch__arm__core__aarch32.dir/isr_wrapper.S.obj
[52/357] Building C object zephyr/arch/common/CMakeFiles/isr_tables.dir/isr_tables.c.obj
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'C:\ncs\toolchains\c57af46cb7\opt\bin\cmake.EXE' --build 'd:\nrf\test_proj\test\lvgl\build'

[Sigurd Hellesvik]

Hi,

Which command did you use to build the sample?

Regards,
Sigurd Hellesvik

[bilal7317]

I have tried both but still getting the same error:

Building lvgl
C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl"


Building lvgl
C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl --pristine --board nrf52840dk_nrf52840 --no-sysbuild -- -DNCS_TOOLCHAIN_VERSION:STRING="NONE" -DBOARD_ROOT:STRING="d:/nrf/test_proj/test/lvgl;d:/nrf/test_proj/test/display;." -DCONF_FILE:STRING="d:/nrf/test_proj/test/lvgl/prj.conf""



I was also able to see the following message if it is of any use:

-- Found assembler: C:/ncs/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc.exe
CMake Warning at C:/ncs/v2.5.0-rc2/zephyr/CMakeLists.txt:893 (message):
No SOURCES given to Zephyr library: drivers__display

Excluding target from build.

[Sigurd Hellesvik]

From your logs:

Try nrf52dk_nrf52832

[bilal7317]

Sigurd Hellesvik 

I have also tried nrf52dk_nrf52832 but I was still getting the error. I was using v2.5.0-rc2 version so converted it to v2.5.0 and now it showed a bit progress but I am getting " `RAM' overflowed " error.

The error logs are mentioned below:

 

PS D:\nrf\test_proj\test\lvgl> C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl --pristine --board nrf52dk_nrf52832 -- -DSHIELD=adafruit_2_8_tft_touch_v2"
-- west build: making build dir d:\nrf\test_proj\test\lvgl\build pristine
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: D:/nrf/test_proj/test/lvgl
-- CMake version: 3.20.5
-- Using NCS Toolchain 2.5.20231017.848171396279 for building. (C:/ncs2/toolchains/c57af46cb7/cmake)
CMake Deprecation Warning at C:/ncs2/v2.5.0/zephyr/cmake/modules/FindDeprecated.cmake:121 (message):
'PYTHON_PREFER' variable is deprecated. Please use Python3_EXECUTABLE
instead.
Call Stack (most recent call first):
C:/ncs2/v2.5.0/zephyr/cmake/modules/python.cmake:16 (find_package)
C:/ncs2/v2.5.0/zephyr/cmake/modules/zephyr_default.cmake:129 (include)
C:/ncs2/v2.5.0/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
C:/ncs2/v2.5.0/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
CMakeLists.txt:5 (find_package)

-- Found Python3: C:/ncs2/toolchains/c57af46cb7/opt/bin/python.exe (found suitable version "3.8.2", minimum required is "3.8") found components: Interpreter
-- Cache files will be written to: C:/ncs2/v2.5.0/zephyr/.cache
-- Zephyr version: 3.4.99 (C:/ncs2/v2.5.0/zephyr)
-- Found west (found suitable version "1.1.0", minimum required is "0.14.0")
-- Board: nrf52dk_nrf52832
-- Shield(s): adafruit_2_8_tft_touch_v2
-- Found host-tools: zephyr 0.16.1 (C:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk)
-- Found toolchain: zephyr 0.16.1 (C:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk)
-- Found Dtc: C:/ncs2/toolchains/c57af46cb7/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6")
-- Found BOARD.dts: C:/ncs2/v2.5.0/zephyr/boards/arm/nrf52dk_nrf52832/nrf52dk_nrf52832.dts
-- Found devicetree overlay: C:/ncs2/v2.5.0/zephyr/boards/shields/adafruit_2_8_tft_touch_v2/adafruit_2_8_tft_touch_v2.overlay
-- Generated zephyr.dts: D:/nrf/test_proj/test/lvgl/build/zephyr/zephyr.dts
-- Generated devicetree_generated.h: D:/nrf/test_proj/test/lvgl/build/zephyr/include/generated/devicetree_generated.h
-- Including generated dts.cmake file: D:/nrf/test_proj/test/lvgl/build/zephyr/dts.cmake
Parsing C:/ncs2/v2.5.0/zephyr/Kconfig
Loaded configuration 'C:/ncs2/v2.5.0/zephyr/boards/arm/nrf52dk_nrf52832/nrf52dk_nrf52832_defconfig'
Merged configuration 'D:/nrf/test_proj/test/lvgl/prj.conf'
Configuration saved to 'D:/nrf/test_proj/test/lvgl/build/zephyr/.config'
Kconfig header saved to 'D:/nrf/test_proj/test/lvgl/build/zephyr/include/generated/autoconf.h'
-- Found GnuLd: c:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe (found version "2.38")
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- The ASM compiler identification is GNU
-- Found assembler: C:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc.exe
-- Configuring done
-- Generating done
-- Build files have been written to: D:/nrf/test_proj/test/lvgl/build
←[92m-- west build: building application
[2/377] Generating include/generated/version.h
-- Zephyr version: 3.4.99 (C:/ncs2/v2.5.0/zephyr), build: v3.4.99-ncs1
[372/377] Linking C executable zephyr\zephyr_pre0.elf
FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map
cmd.exe /C "cd . && C:\ncs2\toolchains\c57af46cb7\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe -gdwarf-4 zephyr/CMakeFiles/zephyr_pre0.dir/misc/empty_file.c.obj -o zephyr\zephyr_pre0.elf -fuse-ld=bfd -T zephyr/linker_zephyr_pre0.cmd -Wl,-Map=D:/nrf/test_proj/test/lvgl/build/zephyr/zephyr_pre0.map -Wl,--whole-archive app/libapp.a zephyr/libzephyr.a zephyr/arch/common/libarch__common.a zephyr/arch/arch/arm/core/aarch32/libarch__arm__core__aarch32.a zephyr/arch/arch/arm/core/aarch32/cortex_m/libarch__arm__core__aarch32__cortex_m.a zephyr/arch/arch/arm/core/aarch32/mpu/libarch__arm__core__aarch32__mpu.a zephyr/lib/libc/picolibc/liblib__libc__picolibc.a zephyr/lib/libc/common/liblib__libc__common.a zephyr/lib/posix/liblib__posix.a zephyr/soc/soc/arm/common/cortex_m/libsoc__arm__common__cortex_m.a zephyr/soc/soc/arm/nordic_nrf/nrf52/libsoc__arm__nordic_nrf__nrf52.a zephyr/subsys/input/libsubsys__input.a zephyr/drivers/clock_control/libdrivers__clock_control.a zephyr/drivers/console/libdrivers__console.a zephyr/drivers/display/libdrivers__display.a zephyr/drivers/gpio/libdrivers__gpio.a
zephyr/drivers/i2c/libdrivers__i2c.a zephyr/drivers/input/libdrivers__input.a zephyr/drivers/pinctrl/libdrivers__pinctrl.a zephyr/drivers/serial/libdrivers__serial.a zephyr/drivers/spi/libdrivers__spi.a zephyr/drivers/timer/libdrivers__timer.a modules/nrf/lib/fatal_error/lib..__nrf__lib__fatal_error.a modules/hal_nordic/nrfx/libmodules__hal_nordic__nrfx.a modules/lvgl/libmodules__lvgl.a modules/segger/libmodules__segger.a -Wl,--no-whole-archive zephyr/kernel/libkernel.a zephyr/CMakeFiles/offsets.dir/./arch/arm/core/offsets/offsets.c.obj -L"c:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/thumb/v7e-m/nofp" -LD:/nrf/test_proj/test/lvgl/build/zephyr -lgcc zephyr/arch/common/libisr_tables.a -mcpu=cortex-m4 -mthumb -mabi=aapcs -mfp16-format=ieee -Wl,--gc-sections -Wl,--build-id=none -Wl,--sort-common=descending -Wl,--sort-section=alignment -Wl,-u,_OffsetAbsSyms
-Wl,-u,_ConfigAbsSyms -nostdlib -static -Wl,-X -Wl,-N -Wl,--orphan-handling=warn -Wl,-no-pie -DPICOLIBC_INTEGER_PRINTF_SCANF --specs=picolibc.specs -lc -lgcc && cmd.exe /C "cd /D
D:\nrf\test_proj\test\lvgl\build\zephyr && C:\ncs2\toolchains\c57af46cb7\opt\bin\cmake.exe -E true""
c:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr\zephyr_pre0.elf section `bss' will not
fit in region `RAM'
c:/ncs2/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: region `RAM' overflowed by 116852 bytes
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'C:\ncs2\toolchains\c57af46cb7\opt\bin\cmake.EXE' --build 'd:\nrf\test_proj\test\lvgl\build'

[Sigurd Hellesvik]

I suggest that you try some Memory footprint optimization with that

[bilal7317]

I was using the wrong command to build. I was trying to build lvgl for adafruit display and I wanted to build it for st7735.

bilal7317 said:

PS D:\nrf\test_proj\test\lvgl> C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl --pristine --board nrf52dk_nrf52832 -- -DSHIELD=adafruit_2_8_tft_touch_v2"

[bilal7317]

Done! 

Sigurd Hellesvik  Thanks a lot for the guidance. It wouldn't be possible to do this task without your help.

I am sharing the following details so it can help others navigate through this issue:

1. Build Error: 
I was using the following command to build but I was getting error that nrf52832 is not available board. But the issue was that I was using v2.5.0-rc and I think it was not stable version so I had to shift my version to v2.5.0 and then it worked.

 Command: C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl --pristine --board nrf52dk_nrf52832 -- -DSHIELD=st7735r_ada_160x128"

2. Ram Overflow Error:

bilal7317 said:

section `bss' will not
fit in region `RAM'

I was getting this error when I was trying to build lvgl code for Adafruit LCD and adafruit have their own UI libraries so I will not recommend to use lvgl with Adafruit LCD. 

bilal7317 said:

PS D:\nrf\test_proj\test\lvgl> C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl --pristine --board nrf52dk_nrf52832 -- -DSHIELD=adafruit_2_8_tft_touch_v2"

It was working fine when I tried to build it for st7735.
Command: 

C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir d:/nrf/test_proj/test/lvgl/build d:/nrf/test_proj/test/lvgl --pristine --board nrf52dk_nrf52832 -- -DSHIELD=st7735r_ada_160x128"


3. GPIO Issue:
After building I was unable to identify the pins that should be used to communicate. I tried multiple examples on community but it didn't work. It was only mentioned that you should use D8-D13 (https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.5.0-rc2/zephyr/boards/shields/st7735r/doc/index.html )but I was not sure where to connect it on nrf52832 development kit. This information was available in "nrf52dk_nrf52832.dts" file as shown in the image attached. 

gpio 19 is refering to P0.19 pin on nrf52832 development kit.