Upnode

1. GW02

This manual provides essential information for programming the UpNode GW02 gateway adapter module. The UpNode GW02, is a pre-assembled PCB that integrates an STM32F103C8T6 Blue Pill development board, an A9G module, and a CC1101 RF module, offering a versatile platform for IoT and wireless communication projects.

1.1. Product Overview

1.1.1. Key Components

STM32F103C8T6 Blue Pill development board
A9G module (GPS, cellular connectivity, SD card support)
CC1101 RF module (range up to 500 meters)
ST-Link V2 programming port
DPDT switch for power management

1.2. Product Images

1.2.1. PCB Front and Back Views

1.2.2. 3D Views

1.3. Hardware Connections

1.3.1. CC1101 to Blue Pill Connections

CC1101 Pin	Blue Pill Pin	Function
1 (GND)	GND	Ground
2 (VCC)	3.3V	Power
3 (GDO0)	PB0	General Digital Output 0
4 (CSN)	PA4	SPI Chip Select
5 (SCK)	PA5	SPI Clock
6 (MOSI)	PA7	SPI MOSI
7 (MISO)	PA6	SPI MISO
8 (GDO2)	Not Connected	Not used

CC1101 Pin

Blue Pill Pin

Function

1 (GND)

GND

Ground

2 (VCC)

3.3V

Power

3 (GDO0)

PB0

General Digital Output 0

4 (CSN)

PA4

SPI Chip Select

5 (SCK)

PA5

SPI Clock

6 (MOSI)

PA7

SPI MOSI

7 (MISO)

PA6

SPI MISO

8 (GDO2)

Not Connected

Not used

1.3.2. A9G Module to Blue Pill Connections

A9G Pin	Blue Pill Pin	Function
GND	GND	Ground
VCC	5V	Power
TXD	PA10	UART1 RX
RXD	PA9	UART1 TX

A9G Pin

Blue Pill Pin

Function

GND

Ground

VCC

Power

TXD

PA10

UART1 RX

RXD

PA9

UART1 TX

1.3.3. ST-Link V2 to Blue Pill Connections (Programming)

ST-Link V2 Pin	Blue Pill Pin	Function
6 (SWCLK)	PA14	Serial Wire Clock
2 (SWDIO)	PA13	Serial Wire Data I/O
4 (GND)	GND	Ground
8 (3.3V)	3.3V	Power

ST-Link V2 Pin

Blue Pill Pin

Function

6 (SWCLK)

PA14

Serial Wire Clock

2 (SWDIO)

PA13

Serial Wire Data I/O

4 (GND)

GND

Ground

8 (3.3V)

3.3V

Power

1.3.4. Power Management

The DPDT switch manages power supply and programming modes:

Position 1 (Normal Operation): 5V to STM32’s 5V input
Position 2 (Programming Mode): ST-Link 3.3V to STM32’s programming port

1.4. Development Environment Setup

The UpNode GW02 can be programmed using various development environments. This manual covers two popular options:

1.4.1. Option 1: Arduino IDE

Download and install the latest Arduino IDE from the official website.
Install STM32 board support:
1. Go to File > Preferences
2. Add the following URL to the "Additional Boards Manager URLs" field: http://dan.drown.org/stm32duino/package_STM32duino_index.json
3. Go to Tools > Board > Boards Manager
4. Search for "STM32" and install the "STM32F1xx/GD32F1xx boards" package
Select the board: Tools > Board > STM32F1 Boards > BluePill F103C8
Install necessary libraries for A9G and CC1101 modules

1.4.2. Option 2: PlatformIO (VS Code)

Install Visual Studio Code
Install the PlatformIO extension for VS Code
Create a new project:
1. Select STM32F103C8 as the board
2. Choose Arduino as the framework
Configure platformio.ini file:

[env:bluepill_f103c8]
platform = ststm32
board = bluepill_f103c8
framework = arduino
upload_protocol = stlink

Install necessary libraries for A9G and CC1101 modules using PlatformIO’s library manager

1.5. Programming the UpNode GW02

1.5.1. Flashing the STM32F103C8T6

Connect ST-Link V2 to your computer via USB
Set DPDT switch to programming position (Position 2)
Connect ST-Link V2 to the programming port on the UpNode GW02
In your chosen IDE:
1. Write or open your program
2. Compile the code
3. Upload the program to the board
After programming, switch DPDT to normal operation (Position 1 (5V))

1.5.2. Programming the A9G Module

The A9G module offers GPS, cellular connectivity (including SMS and MQTT), and SD card support. Here’s a basic example to initialize the module and retrieve GPS data:

#include <SoftwareSerial.h>

SoftwareSerial a9gSerial(PA10, PA9); // RX, TX

void setup() {
  Serial.begin(115200);
  a9gSerial.begin(115200);

  // Initialize A9G module
  a9gSerial.println("AT");
  delay(1000);

  // Enable GPS
  a9gSerial.println("AT+CGPS=1");
  delay(1000);
}

void loop() {
  // Request GPS information
  a9gSerial.println("AT+CGPSINFO");

  // Read and print response
  while (a9gSerial.available()) {
    Serial.write(a9gSerial.read());
  }

  delay(5000);
}

1.5.3. Programming the CC1101 RF Module

The CC1101 module allows for wireless communication with a range of up to 500 meters. Here’s a basic example to initialize the module and send data:

#include <ELECHOUSE_CC1101_SRC_DRV.h>

void setup() {
  Serial.begin(115200);

  // Initialize CC1101 module
  ELECHOUSE_cc1101.Init();
  ELECHOUSE_cc1101.setMHZ(433.92); // Set frequency
}

void loop() {
  // Send data
  const char* data = "Hello from UpNode GW02";
  ELECHOUSE_cc1101.SendData(data, strlen(data));

  Serial.println("Data sent");
  delay(5000);
}

1.6. Advanced Features

1.6.1. A9G Module Capabilities

SMS: Send and receive text messages
MQTT: Connect to MQTT brokers for IoT applications
GPS: Retrieve location data
SD Card: Store and retrieve data locally

1.6.2. CC1101 Long-Range Communication

The CC1101 module can communicate up to 500 meters in optimal conditions. Factors affecting range include:

Antenna design and placement
Environmental obstacles
Transmission power settings
Data rate and modulation scheme

1.7. Troubleshooting

1.7.1. Common Programming Issues

Upload fails:
- Check DPDT switch position
- Verify ST-Link connections
- Ensure correct board and port selection in IDE
A9G module not responding:
- Check power supply
- Verify UART connections in the program
- Ensure correct baud rate
CC1101 communication issues:
- Check antenna connection
- Verify SPI pin connections
- Ensure correct frequency settings

1.8. Suggestions for Improvement

Any suggestions or improvements for the UpNode GW02 is welcome. Please contact SiliconWit on GitHub or visit our community forums.

For detailed specifications or advanced usage, please refer to the individual component datasheets.

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