RAK RAK13003 Manuale utente

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RAK13003 Quick Start Guide

Prerequisite

What Do You Need?

Before going through each and every step on using RAK13003 WisBlock module, make sure to prepare the

necessary items listed below:

Hardware

RAK13003 IO Expansion Module

Your choice of WisBlock Base

Your choice of WisBlock Core

Light-emitting diode or LEDs

USB Cable

Li-Ion/LiPo battery (optional)

Solar charger (optional)

Software

Arduino

Download and install Arduino IDE .

To add the RAKwireless Core boards on your Arduino Boards Manager, install the RAKwireless Arduino BSP

Product Configuration

Hardware Setup

The RAK13003 is an IO expansion module that can be mounted to the IO slot of the WisBlock Baseboard. It offers

16 bidirectional I/O ports by using MCP23017 IC from Microchip. The configuration of this module is via the I2C

interface, and it supports both standard and fast I2C modes.

For more information about RAK13003, refer to the Datasheet.

Row/Column Column 1 Column 2 Column 3 Column 4

Row 1 PA0 PA1 PB6 PB7

Row 2 PA2 PA3 PB4 PB5

Row 3 PA4 PA5 PB2 PB3

Row 4 PA6 PA7 PB0 PB1

Row 5 GND VCC GND VCC

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Figure 1: RAK13003 Connection to WisBlock Base module

Assembling and Disassembling of WisBlock Modules

Assembling Procedure

The RAK13003 module can be mounted on the IO slot of the WisBlock Base board, as shown in Figure 2. Also,

always secure the connection of the WisBlock module by using the compatible screws.

Figure 2: RAK13003 mounting connection to WisBlock Base module

Disassembling Procedure

The procedure in disassembling any type of WisBlock modules is the same.

1. First, remove the screws.

Figure 3: Removing screws from the WisBlock module

2. Once the screws are removed, check the silkscreen of the module to find the correct location where force can

be applied.

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Figure 4: Detaching silkscreen on the WisBlock module

3. Apply force to the module at the position of the connector, as shown in Figure 5, to detach the module from the

baseboard.

Figure 5: Applying even forces on the proper location of a WisBlock module

📝

NOTE

If you will connect other modules to the remaining WisBlock Base slots, check on the WisBlock Pin

Mapper tool for possible conflicts.

Software Configuration and Example

In the following example, you will be using the RAK13003 WisBlock IO Expansion Module to power LEDs.

These are the quick links that go directly to the software guide for the specific WisBlock Core module you use:

RAK13003 in RAK4631 WisBlock Core Guide

RAK13003 in RAK11200 WisBlock Core Guide

RAK13003 in RAK11300 WisBlock Core Guide

RAK13003 in RAK4631 WisBlock Core Guide

Arduino Setup

Shown in Figure 6 is the illustration on how to use the RAK13003 IO Expansion Module to power ON LEDs using

digitalWrite function.

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Figure 6: RAK13003 as Output to LEDs

1. First, you need to select the RAK4631 WisBlock Core.

Figure 7: Selecting RAK4631 as WisBlock Core

2. Next, copy the following sample code into your Arduino IDE.

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/**

@file RAK13003_GPIO_Expander_IO_MCP32.ino

@author rakwireless.com

@brief Use IIC to expand 16 GPIO.

Configure PA input PB output, or PA output PB input.Serial port print GPIO status.

@version 0.1

@date 2021-2-24

**/

#include <Wire.h>

#include <Adafruit_MCP23017.h> //click here to get the library: http://librarymanager/All#Adafru

#define PAIN_PBOUT //PB is set as output here and PA as input.

//#define PAOUT_PBIN

Adafruit_MCP23017 mcp;

void setup()

{

pinMode(WB_IO2, OUTPUT);

digitalWrite(WB_IO2, 1);

// Reset device

pinMode(WB_IO4, OUTPUT);

digitalWrite(WB_IO4, 1);

delay(10);

digitalWrite(WB_IO4, 0);

delay(10);

digitalWrite(WB_IO4, 1);

delay(10);

// Initialize Serial for debug output

time_t timeout = millis();

Serial.begin(115200);

while (!Serial)

{

if ((millis() - timeout) < 5000)

{

delay(100);

}

else

{

break;

}

Serial.println("MCP23017 GPIO Input Output Test.");

mcp.begin(); // use default address 0.

#ifdef PAIN_PBOUT

for(int i=0 ;i < 8 ;i++)

{

mcp.pinMode(i, INPUT); // PA input.

}

for(int j=8 ;j < 16 ;j++)

{

mcp.pinMode(j, OUTPUT); // PB output.

}

mcp.digitalWrite(8, LOW); // The output state of the PB port can be changed to high or low leve

mcp.digitalWrite(9, HIGH); //PIN PB1

mcp.digitalWrite(10, LOW); //PIN PB2

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📝

NOTE

If you experience any error in compiling the example sketch, check the updated code for the RAK4631

WisBlock Core Module that can be found on the RAK13003 WisBlock Example Code Repository .

3. Install the required library, as shown in Figure 8.

mcp.digitalWrite(11, LOW); //PIN PB3

mcp.digitalWrite(12, LOW); //PIN PB4

mcp.digitalWrite(13, LOW); //PIN PB5

mcp.digitalWrite(14, LOW); //PIN PB6

mcp.digitalWrite(15, HIGH);//PIN PB7

Serial.println();

for(int i=0; i < 8; i++ )

{

if(mcp.digitalRead(i) == 1)

Serial.printf("GPIO A %d Read High\r\n",i);

else

Serial.printf("GPIO A %d Read Low\r\n",i);

}

#endif

#ifdef PAOUT_PBIN

for(int i=0 ;i < 8 ;i++)

{

mcp.pinMode(i, OUTPUT); // PA output.

}

for(int j=8 ;j < 16 ;j++)

{

mcp.pinMode(j, INPUT); // PB input.

}

mcp.digitalWrite(0, LOW); // The output state of the PA port can be changed to high or low leve

mcp.digitalWrite(1, HIGH);

mcp.digitalWrite(2, LOW);

mcp.digitalWrite(3, HIGH);

mcp.digitalWrite(4, LOW);

mcp.digitalWrite(5, HIGH);

mcp.digitalWrite(6, LOW);

mcp.digitalWrite(7, HIGH);

Serial.println();

for(int i=8; i < 16; i++ )

{

if(mcp.digitalRead(i) == 1)

Serial.printf("GPIO B %d Read High\r\n",i-8);

else

Serial.printf("GPIO B %d Read Low\r\n",i-8);

}

#endif

}

void loop()

{

}

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Figure 8: Installing the Library

4. Choose Version 1.3.0 of the library, as shown in Figure 9

Figure 9: Selecting Version 1.3.0

5. Select the correct port and upload your code, as shown in Figure 10 and Figure 11.

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Figure 10: Selecting the correct Serial Port

Figure 11: Uploading code

6. When you have successfully uploaded the example sketch, you can see that the LEDs are powered ON. You

can also switch PB as INPUT and PA as OUTPUT by changing this line of code shown in Figure 12.

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Figure 12: Switching between PA and PB

📝

NOTE

You can use mcp.digitalWrite(pin_no,state) and mcp.digitalRead(pin_no) to send or read states.

RAK13003 in RAK11200 WisBlock Core Guide

Arduino Setup

Shown in Figure 13 is the illustration on how to use the RAK13003 IO Expansion Module to power ON LEDs using

digitalWrite function.

Figure 13: RAK13003 as Output to LEDs

1. First, you need to select the RAK11200 WisBlock Core.

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Figure 14: Selecting RAK11200 as WisBlock Core

2. Next, copy the following sample code into your Arduino IDE.

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