WL2S Wi-Fi/BLE Module

by Unknown - product page

• Info & flashing guide
• Debugging

Information
Board code	wl2s
MCU	Lightning LN882HK
Series	LN882X
Partition layout	Tuya default (OTA 0x11A000, KV 0x1C5000)
Specifications
Frequency	160 MHz
Flash size	2 MiB
RAM size	295 KiB
Voltage	3.0V - 3.6V
I/O	13x GPIO, 2x UART, 3x ADC
Wi-Fi	802.11 b/g/n
Bluetooth	BLE v5.1

Usage

Board code: wl2s

In platformio.ini:

[env:wl2s]
platform = libretiny
board = wl2s
framework = arduino

Quick flashing guide

• ltchiptool user guide
• full flashing guide

Pin	Connection
PA03 / RX0	TX of USB-UART adapter
PA02 / TX0	RX of USB-UART adapter
PA09 / BOOT1 (strapping pin)	GND to enter download mode
CEN (Chip-Enable)	GND to reset the chip

1. Connect the USB-UART adapter.
2. Start the flashing process.
3. Connect PA09 (BOOT1) to GND.
4. Power-cycle the device or briefly short CEN to GND.

Pinout

Pin functions

Name(s)	UART	I²C	SPI	PWM	Other
PA00, ADC2
PA01, ADC3					SWDIO
PA02	TX0
PA03	RX0
PA05
PA07
PA09
PA10
PA11
PA12
PB03, ADC5
PB08	RX1
PB09	TX1

Flash memory map

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

Hex values are in bytes.

Name	Code	Start	Length	End
Boot Image	boot	0x000000	24 KiB / 0x6000	0x006000
Partition Table	part_table	0x006000	4 KiB / 0x1000	0x007000
App Image	app	0x007000	1.1 MiB / 0x113000	0x11A000
OTA Image	ota	0x11A000	672 KiB / 0xA8000	0x1C2000
Lightning NV Store	ln_nvds	0x1C2000	12 KiB / 0x3000	0x1C5000
Lightning KV Store	ln_kv	0x1C5000	16 KiB / 0x4000	0x1C9000
LibreTiny Storage	kvs	0x1C9000	32 KiB / 0x8000	0x1D1000
User Data	userdata	0x1D1000	188 KiB / 0x2F000	0x200000
Tuya Storage	tuya	0x1EB000	84 KiB / 0x15000	0x200000