RAK RAK11200 Manuale utente
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RAK11200 WisBlock WiFi Module Datasheet
Overview
Description
RAK11200 is a WisBlock Core module for RAK WisBlock based on Espressif ESP32-WROVER. It is a powerful,
generic WiFi-BLE MCU module that targets a wide variety of applications. There are two CPU cores that can be
individually controlled and the CPU clock frequency is adjustable from 80 MHz to 240 MHz. The low-power deep-
sleep current consumption of the ESP32-WROVER is about 10 uA. This makes the RAK11200 an ultra-low-power
communication solution. RAK11200 can be comfortably programmed with the Arduino™ IDE or PlatformIO.
Features
Two low-power Xtensa® 32-bit LX6 microprocessors
Up to 240 MHz CPU clock
Built-in PCB antenna
4 MB External SPI Flash, 520 KB RAM
8 MB SPI Pseudo static RAM (PSRAM)
WiFi 802.11 b/g/n (802.11n up to 150 Mbps)
Bluetooth v4.2 BR/EDR and BLE specification
Rich set of peripherals: RTC, UART, I2C, SPI, SD card interface
low-power deep-sleep mode
Specifications
Overview
Board Overview
The RAK11200 WisBlock WiFi Module back view and front view (top) can be seen in Figure 1.
Figure 1: RAK11200 WiFi Module Overview
Mounting Sketch
Figure 2 shows RAK11200 module mounting sketch with the WisBase RAK5005-O board.
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Figure 2: RAK11200 WiFi Module Mounting Sketch
Hardware
The hardware specification is categorized into four parts. It discuses the interfacing of the module and its
corresponding functions and diagrams. It also covers the electrical and mechanical parameters that include the
tabular data of the functionalities and standard values of the RAK11200 WisBlock WiFi Module.
⚠
WARNING
Different from other ESP32 boards, the RAK11200 needs to be put manually into download mode. If
you do not force the RAK11200 into download mode, you cannot upload your sketch from Arduino IDE
(or PlatformIO) to the board.
To force the RAK11200 into download mode, you need to connect the pin BOOT0 on the WisBlock
Base RAK5005-O to GND and push the reset button.
The BOOT0 pin is on the J10 pin header, the GND pin is next to it.
Figure 3: Force ESP32 Download mode
Interfaces
UART Interface
The RAK11200 module provides two UART interfaces: UART0 and UART1. The UART0 can be used for firmware
upgrades or to access console output through the WisBlock baseboard USB interface. The UART1 is the main
communication interface with WisIO or WisSensor modules.
UART0 Programming Port
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To support USB, the RAK11200 has a USB-to-UART converter onboard to connect the ESP32's UART0 to the
USB connector. Figure 4 shows the RAK11200 module UART programming circuit.
Figure 4: RAK11200 USB to UART schematic
SPI Interface
The RAK11200 supports one single SPI Interface in full-duplex or half-duplex communication modes. The SPI
interface supports the following features:
Both master and slave modes;
Configurable SPI frequency;
Four SPI transfer modes, which is defined by the polarity (CPOL) and the phase (CPHA) of the SPI clock;
An internal FIFO buffer of 64-byte.
I2C Interface
The RAK11200 module provides two I2C bus interfaces. The module allows you to access directly the registers to
control I2C interfaces, which adds more flexibility to the design of the final product. Depending on your
configuration, it can serve as an I2C master mode. The I2C interface supports:
Standard mode (100 Kbit/s) and Fast mode (400 Kbit/s);
Up to 5 MHz, constrained by the SDA pull-up strength;
7-bit/10-bit addressing mode.
Pin Definition
The RAK11200 module has an ESP32-WROVER module at its core. Figure 5 shows the core module pins and
connection information.
Figure 5: RAK11200 Core module pin connection
WisBlock Core RAK11200 Pin Assignment
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Pin number WisBlock Function Pin name Pin number ESP32
1 VBAT VBAT --
2 VBAT VBAT --
3 GND GND 1, 15, 38
4 GND GND 1, 15, 38
5 3V3 3V3 2
6 3V3 3V3 2
7 USB_DP USB_DP --
8 USB_DN USB_DN --
9 NC NC --
10 SW1 GPIO34 6
11 UART0_TX GPIO1 35
12 UART0_RX GPIO3 34
13 EN EN 3
14 LED1 GPIO12 14
15 LED2 GPIO2 24
16 NC NC --
17 3V3 3V3 2
18 3V3 3V3 2
19 I2C1_SDA GPIO4 26
20 I2C1_SCL GPIO5 29
21 AIN0 GPIO36 4
22 AIN1 GPIO39 5
23 BOOT GPIO0 25
24 NC NC --
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RF Specifications
BLE Radio
Receiver
Pin number WisBlock Function Pin name Pin number ESP32
25 SPI_CS GPIO32 8
26 SPI_CLK GPIO33 9
27 SPI_MISO GPIO35 7
28 SPI_MOSI GPIO25 10
29 IO1 GPIO14 13
30 IO2 GPIO27 12
31 IO3 GPIO26 11
32 IO4 GPIO23 37
33 UART1_TX GPIO21 33
34 UART1_RX GPIO19 31
35 I2C2_SDA GPIO15 23
36 I2C2_SCL GPIO18 30
37 IO5 GPIO13 16
38 IO6 GPIO22 36
39 GND GND 1, 15, 38
40 GND GND 1, 15, 38
Parameter Conditions Min Typ Max Unit
Sensitivity @30.8% PER - -94 -93 -92 dBm
Maximum received signal @30.8% PER - 0 - - dBm
Co-channel C/I - - +10 - dBm
Intermodulation - -36 - - dBm
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Transmitter
WiFi Radio
Electrical Characteristics
Absolute Maximum Ratings
Recommended Operating Conditions
Mechanical Characteristics
Parameter Conditions Min Typ Max Unit
RF transmit power - - 0 0 dBm
Gain control step - - 3 - dBm
RF power control range - -12 - +9 dBm
Drift rate - - 0.7 - kHz/50us
Drift - - 2 - kHz
Parameter Condition Min Typ Max Unit
Operating frequency range - 2412 - 2484 MHz
TX power 11b mode 17.5 18.5 20 dBm
TX power 11n MCS7 12 13 14 dBm
Sensitivity 11b, 1 Mbps - -97 - dBm
Symbol Description Min. Typical Max. Unit
VBAT Power supply for the module 0.5 - 4.2 V
VDD Power supply for ESP32 module 2.3 3.3 3.6 V
Iout Step down IC output current - - 700 mA
Symbol Description Min. Typical Max. Unit
VBAT Power supply for the module 3.1 - 4.2 V
VDD Power supply for ESP32 module 3.0 3.3 3.6 V
TOPR Operation Temperature -40 - 85 ℃
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Board Dimensions
Figure 6: RAK11200 Board Dimensions
WisConnector PCB Layout
Figure 7: WisConnector PCB footprint and recommendations
Schematic Diagram
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Figure 8: RAK11200 Schematic Diagram
RAK11200 is a WisBlock Core module for RAK WisBlock based on Espressif ESP32-WROVER. It is a powerful,
generic WiFi-BLE MCU module that targets a wide variety of applications. There are two CPU cores that can be
individually controlled and the CPU clock frequency is adjustable from 80 MHz to 240 MHz. The low-power deep-
sleep current consumption of the ESP32-WROVER is about 10 uA. This makes the RAK11200 an ultra-low-power
communication solution. RAK11200 can be comfortably programmed with the Arduino™ IDE or PlatformIO.
Last Updated: 11/4/2021, 5:44:19 AM
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RAK11200 Quick Start Guide
Figure 1: WisBlock-Assembly
Content
Introduction
Safety information
Hardware Setup
Arduino IDE BSP Installation
PlatformIO Installation
Introduction
WisBlock is an amazing product built by RAK company for the IoT industry. It can build circuits like building blocks
quickly to realize your idea, and through high-speed connectors and fasteners interconnection, it can directly
compose reliable industrial products.
WisBlock consists of WisBlock Base, WisBlock Core, WisBlock Sensor, and WisBlock IO.
RAK5005-O is the WisBlock Base board which can be connected with WisBlock Core and WisBlock IO through
the connector of the board and provides direct data bus interconnection. WisBlock Base module also integrates
the power supply circuit to realize low power battery power supply. In order to facilitate users, WisBlock Base has
reserved USB ports, indicator lights, keys, and extended IO interfaces.
RAK11200 is the WisBlock Core board which consists of ESP32 WROVER. It supports WiFi and BLE functions,
and supply a rich resource MCU so that you can program it if you want.
WisBlock is not only a functional test capable product in the product development verification stage but also
industrial products oriented to mass production. It uses a high-speed connector to ensure the integrity of the
signal. At the same time, it is equipped with a fastening screw, which can be used in a vibration environment. And
WisBlock can be used reliably in various civil and industrial scenarios through rigorous reliability tests.
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WisBlock uses a compact stacked hardware design, which integrates various computing, connecting, and sensor
circuits in the size of 60*30 mm. The compact size makes it easy for users to build in various customized housings
to achieve complete products. RAK also has a series of housings for WisBlock modules, which can meet the
requirements of various protection levels.
Safety Information
Read the following items carefully so that WisBlock can be used safely.
Hardware
Use WisBlock according to its hardware specification, including the power supply, the temperature of use, the
battery, and so on.
Don't submerge WisBlock in liquids, and don't place WisBlock where water can reach.
Don't power WisBlock using other power sources which RAK hasn't suggested.
Some WisBlock modules require higher current that can't be provided by USB port alone. In this case, it is
recommended to connect a battery to WisBlock Base Board.
⚠
WARNING
Battery can cause harm if not handled properly.
Only 3.7-4.2 V Rechargeable LiPo batteries are supported. It is highly recommended not to use other
types of batteries with the system unless you know what you are doing.
If a non-rechargeable battery is used, it has to be unplugged first before connecting the USB cable to
the USB port of the board to configure the device. Not doing so might damage the battery or cause a
fire.x
Make sure the battery wires match the polarity on the RAK WisBlock Base Board. Not all batteries have
the same wiring.
Only 5 V solar panels are supported. Do not use 12 V solar panels. It will destroy the charging unit and
eventually other electronic parts.
There is already a bootloader in every WisBlock core board MCU when you receive the device so that you don't
need to flash the bootloader again. Normally, you only need to use it directly or upload new code into it through
Arduino IDE. If you accidentally erase the bootloader, contact RAK forum.
Don't unplug any hardware connector when you are uploading code into it, otherwise WisBlock may become
unresponsive.
Hardware Setup
The RAK5005-O board offers several GPIO's on solder pads or the WisBlock Sensor or WisBlock IO modules.
These GPIO's are named IO1 to IO6 and SW1. These GPIO's are connected to GPIO's of the RAK11200 module.
The GPIO assignments are defined in the RAK11200 variant.h file of the Arduino BSP.
RAK5005-O GPIO mapping to RAK11200 GPIO ports
RAK5005-O <-> ESP32
IO1 <-> Arduino GPIO number 14
IO2 <-> Arduino GPIO number 27
IO3 <-> Arduino GPIO number 26
IO4 <-> Arduino GPIO number 23
IO5 <-> Arduino GPIO number 13
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