ST UM2033, Руководство пользователя

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Hardware layout and configuration UM2033
24/44 UM2033 Rev 4
5.20 Wi-Fi
®
and extension I
2
C connector
This connector (CN2) supports the Wi-Fi
®
module or extension I
2
C board.
5.20.1 Serial Wi-Fi
®
module
This module is 802.11 b/g/n compliant and is driven through serial communication using
only RX and TX of a UART interface (Refer to
Figure 20 ).
This low-cost module is not an STMicroelectronics accessory. Its order code is ESP8266-
01.
Figure 20. Wi-Fi
®
module (ESP8266-01)
5.20.2 Extension I
2
C board
The user can design a board according to the pin-out provided in Section 6: Connectors and
to the board schematics.
Each signal used for this I
2
C is GPIOs, the I
2
C protocol must be managed by software.