Espressif ESP32-S2 Programming Manual page 44

Chapter 1. Get Started
Boards Used HW
Conflict
8311A v1.2 + CAM I2S
v1.0 Con-
troller,
IO46
TouchA v1.1 + IO11,
LCD32 v1.1 IO6
8311A v1.2 + IO6
LCD32 v1.1
TouchA v1.1 + Pin
8311A v1.2 BT_ADC
on ESP-
LyraT-
8311A
Espressif Systems
TouchA v1.1 + IO1,
CAM v1.0 IO2,
Fig. 23: ESP32-S2-Kaluga-1 block diagram
Limitations
ESP32-S2 has only one I2S
interface. But both exten-
sion boards require connection
via the ESP32-S2's I2S in-
terface (ESP-LyraT-8311A in
Standard mode, ESP-LyraP-
CAM in Camera mode).
IO46 is used by both extension
boards at the same time, ESP-
LyraP-CAM experiences inter-
ferences when used.
Touch actions cannot be trig-
gered because of the multi-
plexed pin IO11. ESP-LyraP-
LCD32 is also affected because
its BK (BLCT) pin is connected
to pin IO6.
The two extension boards can
be used at the same time. How-
ever, since the BK (BLCT)
pin of ESP32-S2-Kaluga-1 is
connected to IO6, ESP-LyraT-
8311A's pin BT_ADC cannot
be used and the board' s six but-
tons will not be available.
The two extension boards can
be used at the same time. How-
ever, ESP-LyraP-TouchA can-
not be triggered if ESP-LyraT-
8311A's pin BT_ADC is used
to initialize the board' s six but-
33
tons.
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Cannot be used simultaneously
because of the mentioned mul-
Solution
No ready solution for now.
If
Do not initialize IO11 (NETWORK)
and IO6 (PHOTO) for your ESP-LyraP-
TouchA.
There is a solution that will allow you to
use ESP-LyraT-8311A's pin BT_ADC,
but will stop you from controlling the dis-
play background brightness with software:
on your ESP-LyraP-LCD32 board, remove
R39, change R41 to 100 Ohm, switch
BLCT_L to on.
If you plan to use ESP-LyraT-8311A's
pin BT_ADC, do not initialize pin IO6
(PHOTO) for your ESP-LyraP-TouchA.
For ESP-LyraP-TouchA, do not initialize
IO1 (VOL_UP), IO2 (PLAY), and IO3
Release v4.4