89 lines
3.1 KiB
Markdown
89 lines
3.1 KiB
Markdown
# Generic - BK7231N (Tuya QFN32)
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*by Generic*
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[Product page](https://kuba2k2.github.io/libretuya/boards/generic-bk7231n-qfn32-tuya/)
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- [General info](../../docs/platform/beken-72xx/README.md)
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- [Flashing guide](../../docs/platform/beken-72xx/flashing.md)
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Parameter | Value
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-------------|----------------------------------
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Board code | `generic-bk7231n-qfn32-tuya`
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MCU | BK7231N
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Manufacturer | Beken
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Series | BK72XX
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Frequency | 120 MHz
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Flash size | 2 MiB
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RAM size | 256 KiB
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Voltage | 3.0V - 3.6V
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I/O | 19x GPIO, 6x PWM, 2x UART, 1x ADC
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Wi-Fi | 802.11 b/g/n
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Bluetooth | BLE v5.1
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## Usage
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**Board code:** `generic-bk7231n-qfn32-tuya`
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In `platformio.ini`:
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```ini
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[env:generic-bk7231n-qfn32-tuya]
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platform = libretuya
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board = generic-bk7231n-qfn32-tuya
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framework = arduino
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```
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In ESPHome YAML:
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```yaml
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libretuya:
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board: generic-bk7231n-qfn32-tuya
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framework:
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version: dev
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```
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## Arduino Core pin mapping
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No. | Pin | UART | I²C | SPI | PWM | Other
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----|-----------|----------|----------|------|------|------
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D0 | P0 | UART2_TX | I2C2_SCL | | |
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D1 | P1 | UART2_RX | I2C2_SDA | | |
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D2 | P6 | | | | PWM0 |
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D3 | P7 | | | | PWM1 |
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D4 | P8 | | | | PWM2 |
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D5 | P9 | | | | PWM3 |
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D6 | P10 | UART1_RX | | | |
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D7 | P11 | UART1_TX | | | |
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D8 | P14 | | | SCK | |
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D9 | P15 | | | CS | |
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D10 | P16 | | | MOSI | |
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D11 | P17 | | | MISO | |
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D12 | P20 | | I2C1_SCL | | | TCK
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D13 | P21 | | I2C1_SDA | | | TMS
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D14 | P22 | | | | | TDI
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D15 | P23 | | | | | TDO
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D16 | P24 | | | | PWM4 |
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D17 | P26 | | | | PWM5 |
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D18 | P28 | | | | |
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A0 | P23, ADC3 | | | | |
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## Flash memory map
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Flash size: 2 MiB / 2,097,152 B / 0x200000
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Hex values are in bytes.
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Name | Start | Length | End
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----------------|----------|--------------------|---------
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Bootloader | 0x000000 | 68 KiB / 0x11000 | 0x011000
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App Image | 0x011000 | 1.1 MiB / 0x119000 | 0x12A000
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OTA Image | 0x12A000 | 664 KiB / 0xA6000 | 0x1D0000
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Calibration | 0x1D0000 | 4 KiB / 0x1000 | 0x1D1000
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Network Data | 0x1D1000 | 4 KiB / 0x1000 | 0x1D2000
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TLV Store | 0x1D2000 | 4 KiB / 0x1000 | 0x1D3000
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Key-Value Store | 0x1D3000 | 32 KiB / 0x8000 | 0x1DB000
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User Data | 0x1DB000 | 148 KiB / 0x25000 | 0x200000
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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.
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