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The following commit(s) were added to refs/heads/master by this push:
new 7240565ca3 boards/linum-stm32h753bi: Fix LVGL video memory allocation
7240565ca3 is described below
commit 7240565ca386f39a57170959282f21f5492d51ab
Author: Jorge Guzman <jorge....@gmail.com>
AuthorDate: Tue Jan 28 10:21:49 2025 -0300
boards/linum-stm32h753bi: Fix LVGL video memory allocation
Previously, the LVGL example had a workaround in lv_nuttx_fbdev.c to prevent
video memory invasion. This fix properly addresses the issue by:
- Reducing total SDRAM size from 8MB to 6MB
- Moving LTDC base address to 0xC0600000
- Reserving dedicated space for video memory outside NuttX heap
This ensures proper memory separation between video buffer and system heap.
Signed-off-by: Jorge Guzman <jorge....@gmail.com>
---
.../arm/stm32h7/boards/linum-stm32h753bi/index.rst | 45 ++++++++++------------
.../linum-stm32h753bi/configs/lvgl/defconfig | 13 ++++---
.../arm/stm32h7/linum-stm32h753bi/include/board.h | 11 +++++-
3 files changed, 38 insertions(+), 31 deletions(-)
diff --git
a/Documentation/platforms/arm/stm32h7/boards/linum-stm32h753bi/index.rst
b/Documentation/platforms/arm/stm32h7/boards/linum-stm32h753bi/index.rst
index ddecaf0a05..bc135aa926 100644
--- a/Documentation/platforms/arm/stm32h7/boards/linum-stm32h753bi/index.rst
+++ b/Documentation/platforms/arm/stm32h7/boards/linum-stm32h753bi/index.rst
@@ -15,7 +15,7 @@ Board information
=================
This board was release by Witte Tenology in 2023 and developed based on
-STM32H753BI microcontroller. The board has 2 expansion connectors used by the
LCD display with
+STM32H753BI microcontroller. The board has 2 expansion connectors used by the
LCD display with
touchscreen and another for access to other peripherals of microcontroller.
The board features:
@@ -38,7 +38,7 @@ The board features:
- 2 On-board CAN-FD Transceiver
Expansion connector 1 features:
- - 1 Display RBG 888
+ - 1 Display RBG 565
- 1 Capacitive Touchscreen sensor
Expansion connector 2 features.
@@ -61,7 +61,7 @@ The LINUM-STM32H753BI has 3 software controllable LEDs.
======= =====
LED_R PG2
LED_G PG3
- LED_B PB2
+ LED_B PB2
======= =====
UART/USART
@@ -76,7 +76,7 @@ USART1
USART1 PINS
====== =====
TX PB14
- RX PB15
+ RX PB15
====== =====
The LINUM-STM32H753BI board has two on-board RS-232 transceiver connected to
USART2 and USART3.
@@ -114,9 +114,9 @@ The LINUM-STM32H753BI board has two on-board RS-485
transceiver connected to USA
====== =====
TXD PC6
RXD PC7
- DE PG12
+ DE PG12
====== =====
-
+
SDMMC
======
@@ -137,7 +137,7 @@ The LINUM-STM32H753BI has one SDCard slot connected as
below:
=============== =====
SDCARD_DETECTED PG7
SDCARD_PWR_EN PD7
- =============== =====
+ =============== =====
ETHERNET
========
@@ -170,7 +170,7 @@ The LINUM-STM32H753BI board has two on-board CAN-FD
transceiver connected to FDC
====== =====
TXD PH13
RXD PH14
- STD PI2
+ STD PI2
====== =====
====== =====
@@ -178,7 +178,7 @@ The LINUM-STM32H753BI board has two on-board CAN-FD
transceiver connected to FDC
====== =====
TXD PB13
RXD PB12
- STD PE3
+ STD PE3
====== =====
USB
@@ -212,7 +212,7 @@ The NOR memory used is the W25Q128JV with 16MB
CLK PF10
NCS PG6
======= =====
-
+
I2C3
============
The LINUM-STM32H753BI connects the EEPROM memory and the touchscreen sensor to
I2C3.
@@ -244,7 +244,7 @@ The touchscreen sensor used is the FT5X06.
I2C4
=======
The I2C4 is available for general use on the expansion connector.
-
+
====== =====
I2C4 PINS
====== =====
@@ -356,7 +356,7 @@ The LINUM-STM32H753BI has a buzzer without internal
oscillator connected to PB7
========= =====
GPIO PINS
========= =====
- BUZZER PB7
+ BUZZER PB7
========= =====
==============
@@ -541,7 +541,7 @@ Transmiting a file to PC::
# Using zmodem to receive a file from target
my_pc/temp$ rz > /dev/ttyACM0 < /dev/ttyACM0
- Receiving: nuttx_logo.txt
+ Receiving: nuttx_logo.txt
Bytes received: 1942/ 1942 BPS:124544
Transfer complete
@@ -672,7 +672,7 @@ In your pc you will be able connect to target using telnet
and access their shel
nsh> exit
Connection closed by foreign host.
$
-
+
Testing wget to download file from server::
# PC: Creating a http server and sharing local folder.
@@ -682,7 +682,7 @@ Testing wget to download file from server::
Serving HTTP on 0.0.0.0 port 80 (http://0.0.0.0:80/) ...
10.42.0.2 - - [28/Apr/2024 16:14:39] "GET /nuttx_logo.txt HTTP/1.0" 200 -
- # Using wget on target
+ # Using wget on target
nsh> mount -t tmpfs /tmp
nsh> cd /tmp
nsh> pwd
@@ -707,7 +707,7 @@ Enable the USB Mass Storage with the command **msconn**::
After that check if your PC recognized the usb driver::
$ sudo dmesg | tail
- [sudo] password for jaga:
+ [sudo] password for jaga:
[27219.361934] usbcore: registered new interface driver uas
[27220.378231] scsi 0:0:0:0: Direct-Access NuttX Mass Storage
0101 PQ: 0 ANSI: 2
[27220.378646] sd 0:0:0:0: Attached scsi generic sg0 type 0
@@ -817,7 +817,7 @@ Configures the board to use the SPI4 and enables RFID
driver with MFRC522::
lvgl
----
-Configures the board to use display of 7 inch with lvgl example. The touch
screen functionality is implemented using
+Configures the board to use display of 7 inch with lvgl example. The touch
screen functionality is implemented using
the FT5X06 capacitive touch controller connected to I2C3 interface, with
interrupt handling configured on pin PH9 for touch event detection.
To verify if the touch controller is functioning correctly, use the **tc**
command.::
@@ -886,17 +886,12 @@ To verify if the display is functioning correctly, use
the **fb** command. You s
5: (465,270) ( 94, 60)
Test finished
-Once the **fd** command work, run the lvgl exemple. ::
+Once the **fd** command works, run the lvgl examples. ::
nsh> lvgldemo
+ nsh> lvgldemo benchmark
-**WARNING:** This example at the moment is not working correctly yet and have
a bug fix to be done.
-In the lvgl file
**./apps/graphics/lvgl/lvgl/src/drivers/nuttx/lv_nuttx_fbdev.c**
-search the function **lv_nuttx_fbdev_set_file** and modify line 156 as
follows::
-
- dsc->mem_off_screen = malloc(data_size);
- to
- dsc->mem_off_screen = (void*)0xC0000000;
+**WARNING:** For this example, the total SDRAM size was reduced from 8M to 6M
and the LTDC base address was moved to address 0xC0600000 to avoid video memory
invasion since the SDRAM was mapped to use the nuttx heap. If using the example
with 2 layers, the reserved value will need to be doubled.
tone
----
diff --git a/boards/arm/stm32h7/linum-stm32h753bi/configs/lvgl/defconfig
b/boards/arm/stm32h7/linum-stm32h753bi/configs/lvgl/defconfig
index a167a5b30c..47cd49c6cb 100644
--- a/boards/arm/stm32h7/linum-stm32h753bi/configs/lvgl/defconfig
+++ b/boards/arm/stm32h7/linum-stm32h753bi/configs/lvgl/defconfig
@@ -41,12 +41,14 @@ CONFIG_INPUT_FT5X06=y
CONFIG_INTELHEX_BINARY=y
CONFIG_LIBM=y
CONFIG_LINE_MAX=64
-CONFIG_LV_USE_CLIB_MALLOC=y
-CONFIG_LV_USE_CLIB_SPRINTF=y
-CONFIG_LV_USE_CLIB_STRING=y
+CONFIG_LV_FONT_MONTSERRAT_24=y
+CONFIG_LV_MEM_SIZE_KILOBYTES=128
+CONFIG_LV_USE_DEMO_BENCHMARK=y
CONFIG_LV_USE_DEMO_WIDGETS=y
CONFIG_LV_USE_NUTTX=y
CONFIG_LV_USE_NUTTX_TOUCHSCREEN=y
+CONFIG_LV_USE_PERF_MONITOR=y
+CONFIG_LV_USE_SYSMON=y
CONFIG_MM_REGIONS=5
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
@@ -69,8 +71,8 @@ CONFIG_START_YEAR=2011
CONFIG_STM32H7_FMC=y
CONFIG_STM32H7_I2C3=y
CONFIG_STM32H7_LTDC=y
-CONFIG_STM32H7_LTDC_FB_BASE=0xC0000000
-CONFIG_STM32H7_LTDC_FB_SIZE=1228800
+CONFIG_STM32H7_LTDC_FB_BASE=0xC0600000
+CONFIG_STM32H7_LTDC_FB_SIZE=2097152
CONFIG_STM32H7_PWR=y
CONFIG_STM32H7_RTC=y
CONFIG_STM32H7_USART1=y
@@ -78,4 +80,5 @@ CONFIG_SYSTEM_NSH=y
CONFIG_TASK_NAME_SIZE=0
CONFIG_TESTING_RAMTEST=y
CONFIG_USART1_SERIAL_CONSOLE=y
+CONFIG_USEC_PER_TICK=1000
CONFIG_VIDEO_FB=y
diff --git a/boards/arm/stm32h7/linum-stm32h753bi/include/board.h
b/boards/arm/stm32h7/linum-stm32h753bi/include/board.h
index 0470c4832b..80fb6682a6 100644
--- a/boards/arm/stm32h7/linum-stm32h753bi/include/board.h
+++ b/boards/arm/stm32h7/linum-stm32h753bi/include/board.h
@@ -497,7 +497,16 @@
# endif
#endif
-#define BOARD_SDRAM1_SIZE (8*1024*1024)
+/* BOARD_SDRAM1_SIZE - With ltdc enabled, we reserve the last 2M
+ * of SDRAM for use with the LTDC framebuffer. If using double buffering,
+ * this value will need to be doubled.
+ */
+
+#ifdef CONFIG_STM32H7_LTDC
+# define BOARD_SDRAM1_SIZE (6*1024*1024)
+#else
+# define BOARD_SDRAM1_SIZE (8*1024*1024)
+#endif
/* BOARD_FMC_SDCR1 - Initial value for SDRAM control registers for SDRAM
* bank 1. Note bank 2 isn't used!
