Buttons And Leds; Table 8. Port Assignment For Control Of Led Indicators - STMicroelectronics STM32F469I-DISCO User Manual

Hardware layout and configuration
CN10
pin
14
15
16
17
18
19
20
21
22
23
24
25
4.15

Buttons and LEDs

The black button B1 located bottom side is the reset of the microcontroller
STM32F469NIH6. Refer to the
The blue button B2 located bottom side is available to be used as a digital input or as
alternate function Wake-up. When the button is depressed the logic state is 1, otherwise the
logic state is 0.
Four LEDs located top side are available for the user. Refer to the
DISCO top side layout
green, orange, red, blue respectively. To light a LED a low logic state 0 should be written in
the corresponding
22/30
Table 7. DSI LCD module connector (CN10) (continued)
Signal
name
HSSI_CLK_P
GND
HSSI_D1_N
NC
HSSI_D1_P
GND
NC/ERR
VCC
Tearing effect output pin to synchronize MCU to
TE
LEDK
LEDA
GND
Figure 5: STM32F469I-DISCO bottom side layout
. The LEDs are LD1, LD2, LD3, LD4 from left to right with colors
GPIO.Table 8 gives the assignment of control ports to the LED indicators.

Table 8. Port assignment for control of LED indicators

LED Controlled by MCU port
LD1
LD2
LD3
LD4
UM1932 Rev 3
Description
MIPI-DSI clock lane positive-end input
Ground
MIPI-DSI data lane 1 negative-end input
Not connect
MIPI-DSI data lane 1 positive-end input
Ground
Not connect
Analog circuitry power supply
frame writing
Backlight LED Cathode
Backlight LED Anode
Ground
PG6
PD4
PD5
PK3
UM1932
MCU pins
involved
DSI_CK_P
-
DSI_D1_N
-
DSI_D1_P
-
-
+3V3
PJ2
-
-
-
.
Figure 4: STM32F469I-
Color
Green
Orange
Red
Blue