ST LCD DSI MB1835
Overview
The MB1835 shield (revision B-01) provides a 2.47-inch round TFT-LCD with MIPI DSI interface and capacitive touch screen, specifically designed for STM32U5G9J-DK1 Discovery kit.
The shield features:
2.47-inch round TFT-LCD with 480x480 pixel resolution
16.7M color depth (RGB888)
J025F1CN0201W display module with Himax HX8379C LCD controller
MIPI DSI® 2-data lane interface
Capacitive touch panel (CTP)
LED backlight with GPIO control
MB1835 Display Shield Front Image
MB1835 Display Shield Back Image
The MB1835 display board connects to the STM32U5G9J-DK1 through the CN1 connector:
CN1 odd |
Description |
Interface |
CN1 even |
Description |
Interface |
|---|---|---|---|---|---|
1 |
GND |
2 |
|||
3 |
DSI_CK_P |
DSI |
4 |
TOUCH_INT |
Interrupt out |
5 |
DSI_CK_N |
DSI |
6 |
GND |
|
7 |
GND |
8 |
|||
9 |
DSI_D0_P |
DSI |
10 |
||
11 |
DSI_D0_N |
DSI |
12 |
GND |
|
13 |
GND |
14 |
|||
15 |
DSI_D1_P |
DSI |
16 |
||
17 |
DSI_D1_N |
DSI |
18 |
GND |
|
19 |
GND |
20 |
|||
21 |
BLVDD(+5V) |
22 |
|||
23 |
BLVDD(+5V) |
24 |
|||
25 |
26 |
||||
27 |
BLGND |
28 |
|||
29 |
BLGND |
30 |
|||
31 |
32 |
||||
33 |
34 |
||||
35 |
36 |
3.3V |
|||
37 |
38 |
||||
39 |
40 |
I2C_SDA |
I2C |
||
41 |
42 |
||||
43 |
44 |
I2C_SCL |
I2C |
||
45 |
46 |
||||
47 |
48 |
||||
49 |
DSI_TE |
DSI |
50 |
||
51 |
52 |
||||
53 |
BL_CTRL |
GPIO |
54 |
||
55 |
56 |
||||
57 |
RESET |
GPIO |
58 |
||
59 |
60 |
1.8V |
Requirements
Your board needs to have a mipi_dsi device tree label to work with this shield.
Usage
The shield can be used in any application by setting SHIELD to
st_lcd_dsi_mb1835 and adding the necessary device tree properties.
Set --shield "st_lcd_dsi_mb1835" when you invoke west build. For example:
# From the root of the zephyr repository
west build -b stm32u5g9j_dk1 --shield st_lcd_dsi_mb1835 samples/drivers/display