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Development Tutorial

Before start the development, please check Setup your toolchain to set up the tool first.

Hardware overview​

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Firmware overview​

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Grove​

There are 6 Grove interfaces in the Wio Tracker 1110 Dev Board, which can be connected to 300+ Grove modules. Click here to know more about the Grove module.

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Grove I2C​

There is a Grove I2C port on the DK, with SDA on pin 27 and SCL on pin 26.

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Grove UART​

The Wio Tracker 1110 Dev Board has two UART peripherals, namely uart0 and uart1. uart0 pins are connected to the CH340C for debugging purposes, while uart1 serves as a Grove UART Port.

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Referring to the schematic, TXD is located on pin 8 and RXD is on pin 6.

#define     LED1                      13
#define     LED2                      14
#define     TXD                       8
#define     RXD                       6
#define     UART_TX_RX_BUF_SIZE       256

Grove Digital​

#include <Adafruit_TinyUSB.h>  
#include <Wire.h>              
#include <Ultrasonic.h>        

// Define the pin to which the ultrasonic sensor is connected
constexpr int ULTRASONIC_PIN = D0;  

Ultrasonic ultrasonic(ULTRASONIC_PIN);  

void setup()
{
  delay(100);                 
  Serial.begin(115200);        // Start Serial communication at a baud rate of 115200
  while (!Serial) delay(100); 

void loop()
{
  long RangeInInches;         // Variable to store distance in inches
  long RangeInCentimeters;    // Variable to store distance in centimeters

  Serial.println("The distance to obstacles in front is: ");  

  RangeInInches = ultrasonic.MeasureInInches();  // Measure distance in inches using the Ultrasonic sensor
  Serial.print(RangeInInches);  
  Serial.println(" inch");       

  delay(250); 

  RangeInCentimeters = ultrasonic.MeasureInCentimeters();  
  Serial.print(RangeInCentimeters);  
  Serial.println(" cm");             

  delay(2500);  
}

Grove Analog​

Example Code:
#include <Adafruit_TinyUSB.h> // for Serial

constexpr int ADCIN = A0;
constexpr float MV_PER_LSB = 3600.0f / 1024.0f; // 10-bit ADC with 3.6V input range

void setup()
{
  delay(100);
  Serial.begin(115200);
  while (!Serial) delay(100);
}

void loop()
{
 // Get a fresh ADC value
  long sum = 0;
  for (int i = 0; i < 32; i++)
  {
    sum += analogRead(ADCIN);
  }
  int adcvalue = sum / 32;

  // Display the results
  Serial.print(adcvalue);
  Serial.print(" [");
  Serial.print((float)adcvalue * MV_PER_LSB);
  Serial.println(" mV]");

  delay(1000);
}

LoRaWAN​

Resource​

[Github] Seeed-Studio/Wio_Tracker_1110_Dev_Board

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