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Generic - BK7231T (Tuya QFN32)

by Generic

Product page

Parameter Value
Board code generic-bk7231t-qfn32-tuya
MCU BK7231T
Manufacturer Beken
Series BK72XX
Frequency 120 MHz
Flash size 2 MiB
RAM size 256 KiB
Voltage 3.0V - 3.6V
I/O 19x GPIO, 6x PWM, 2x UART, 1x ADC
Wi-Fi 802.11 b/g/n
Bluetooth BLE v4.2

Usage

Board code: generic-bk7231t-qfn32-tuya

In platformio.ini:

[env:generic-bk7231t-qfn32-tuya]
platform = libretiny
board = generic-bk7231t-qfn32-tuya
framework = arduino

In ESPHome YAML:

bk72xx:
  board: generic-bk7231t-qfn32-tuya

Pin functions

Name(s) UART IÂēC SPI PWM Other
P0 TX2 SCL2
P1 RX2 SDA2
P6 PWM0
P7 PWM1
P8 PWM2
P9 PWM3
P10 RX1
P11 TX1
P14 SCK
P15 CS
P16 MOSI
P17 MISO
P20 SCL1 TCK
P21 SDA1 TMS
P22 TDI
P23, ADC3 TDO
P24 PWM4
P26 PWM5
P28

Flash memory map

Flash size: 2 MiB / 2,097,152 B / 0x200000

Hex values are in bytes.

Name Start Length End
Bootloader 0x000000 68 KiB / 0x11000 0x011000
App Image 0x011000 1.1 MiB / 0x121000 0x132000
OTA Image 0x132000 664 KiB / 0xA6000 0x1D8000
Key-Value Store 0x1D8000 32 KiB / 0x8000 0x1E0000
Calibration 0x1E0000 4 KiB / 0x1000 0x1E1000
TLV Store 0x1E1000 4 KiB / 0x1000 0x1E2000
Network Data 0x1E2000 4 KiB / 0x1000 0x1E3000
User Data 0x1E3000 116 KiB / 0x1D000 0x200000
Tuya Storage 0x1ED000 76 KiB / 0x13000 0x200000

Bootloader and app partitions contain CRC16 sums every 32 bytes. That results in the actual flash offsets/sizes not aligned to sector boundaries. To simplify calculations, the values shown in the table (extracted from bootloader's partition table) were aligned to 4096 bytes.