WR2L Wi-Fi Module
by Tuya Inc.
Parameter | Value |
---|---|
Board code | wr2l |
MCU | RTL8710BX |
Manufacturer | Realtek |
Series | AmebaZ |
Frequency | 62.5 MHz |
Flash size | 2 MiB |
RAM size | 256 KiB |
Voltage | 3.0V - 3.6V |
I/O | 5x GPIO, 4x PWM, 1x UART, 1x ADC |
Wi-Fi | 802.11 b/g/n |
FCC ID | 2ANDL-WR2L |
Usage
Board code: wr2l
In platformio.ini
:
In ESPHome YAML:
Pinout
Arduino Core pin mapping
No. | Pin | UART | I²C | SPI | PWM | Other |
---|---|---|---|---|---|---|
D0 | PA15 | PWM1 | SWDIO | |||
D1 | PA14 | PWM0 | SWCLK | |||
D2 | PA05 | PWM4 | ||||
D3 | PA19 | UART0_CTS | I2C0_SDA | SPI0_CS, SPI1_CS | ||
D4 | PA12 | PWM3 | ||||
A0 | PA19, ADC1 |
Flash memory map
Flash size: 2 MiB / 2,097,152 B / 0x200000
Hex values are in bytes.
Name | Start | Length | End |
---|---|---|---|
Boot XIP | 0x000000 | 16 KiB / 0x4000 | 0x004000 |
Boot RAM | 0x004000 | 16 KiB / 0x4000 | 0x008000 |
(reserved) | 0x008000 | 4 KiB / 0x1000 | 0x009000 |
System Data | 0x009000 | 4 KiB / 0x1000 | 0x00A000 |
Calibration | 0x00A000 | 4 KiB / 0x1000 | 0x00B000 |
OTA1 Image | 0x00B000 | 788 KiB / 0xC5000 | 0x0D0000 |
OTA2 Image | 0x0D0000 | 788 KiB / 0xC5000 | 0x195000 |
Key-Value Store | 0x195000 | 24 KiB / 0x6000 | 0x19B000 |
User Data | 0x19B000 | 400 KiB / 0x64000 | 0x1FF000 |
RDP | 0x1FF000 | 4 KiB / 0x1000 | 0x200000 |
RDP is most likely not used in Tuya firmwares, as the System Data partition contains an incorrect offset 0xFF000 for RDP, which is in the middle of OTA2 image.
Additionally, Tuya firmware uses an encrypted KV or file storage, which resides at the end of flash memory. This seems to overlap system RDP area.