This page is an introduction to Mbed for one who never touched GR-PEACH and Mbed site.

Setup!¶

Create an Mbed account¶

You need to create an Mbed account if you don't have one.
This step is necessary only for the first time.

1. Move from https://mbed.org/ to Mbed Classic Developer site.
   
   
   
2. Click "Login or signup".
   
   
   
3. Click "Signup".
   
   
   
4. Click "No, I haven’t created an account before".
   
5. Enter your user name and password, check the "agree" and "confirm" check boxs, then click "Signup".
   
   
   

How to log in¶

You may already be logged in by your browser depending on the cookie setting.

1. Move to Mbed Classic Developer Site from https://mbed.org/.
   
   
   
2. Click "Login or signup."
   
   
   
3. Fill the following fields and click "Login".
   • user name (mail address)
     
   • password
     
     
     

Add "Renesas GR-PEACH" to your Mbed compiler¶

You can build programs for GR-PEACH by adding "Renesas GR-PEACH" platform to your Mbed compiler.

1. Move to Platforms page from Developer Site.
   
   
   
2. Check "Renesas" of Target Vender on the left side, and click "Renesas GR-PEACH" platform.
   
   
   
3. Click "Add to your Mbed compiler" on the right side.
   
   

Install the USB Serial communication driver to your PC¶

Only for Windows(R) user:
You will be able to print debug by install USB Serial communication driver.
Please refer to this page for details of Seriarl Communication with a PC.
Please prepare a USB cable(A-MicroB) to connect between your PC and GR-PEACH, before starting steps as below.

1. Connect GR-PEACH and PC with USB cable.
   GR-PEACH side conecttor is showen as below.
   
2. After the mount GR-PEACH as "MBED" volume label, install this driver.
   "Download latest driver" at the destination link is the target driver.
   
3. As Mbed default setting of Serial is as below.
   Set Terminal of your PC to Mbed default setting.
   If you want to modify the setting, refer SerialPC page of Handbook.
   

How to build at Mbed Online Compiler¶

You can open the Mbed online compiler window by pressing the "Compiler" button at the upper right corner of the page when you are logged in at the site.

programs and libraries¶

Program and library are defined in Mbed as follows:

program	A collection of code that can make up an executable program including main.cpp.
library	A code that can be cut off as a unit function in the folder for the program. Its contents may be a collection of code or stored in a library format (*.ar).

Import a "program"¶

You may import a program either by importing it from the Compiler window or by expanding the program at the Mbed site.

Within the Mbed Compiler¶

Take the following actions in the Mbed Compiler window:

1. Press the Import button.
2. Select the "`Programs" tag.
3. Search program you need.
   If you click "Search" button when input box is empty, all programs will apair.
4. Select the program you want to import.
5. Press the "Import!" button
   
6. Do not check "Update all libraries to the latest version" if you want to import the program in the environment in which the writer of the program published it. To use the latest version of the libraries, check "Update all libraries to the latest version."
   At last, click "Import" button.
   

At the Mbed site¶

1. Move to the page for the target program at the Mbed site.
   
2. Click "Import this program" located on the right side of the window.
   
3. Do not check "Update all libraries to the latest version" if you want to import the program in the environment in which the writer of the program published it.
   To use the latest version of libraries, check "Update all libraries to the latest version."
   At last, click "Import" button.
   
   

Let's blink LED!!¶

1. Connect GR-PEACH to your PC and wait the mount as "MBED" drive.
   
2. Click "Import program" button of "mbed_blinky" below.

   Import programmbed_blinky

   The example program for mbed pin-compatible platforms

   Last commit 08 Apr 2019 by Mbed

3. Check "Update all libraries to the latest version".
4. Get the source code by clicking "Import" button.
5. Create binary file by clicking the "Compile" button.
   
6. When compile is finished, binary file is downloaded using browser function.
   Copy this file to Mbed drive.
   
7. When GR-PEACH's reset button as below is pushed or reconnect USB cable, the program runs.
   
   

How to modify sample code¶

Change Blink LED¶

You can change blink LED by changing LED name.
Below table shows defined name of LED and the colors.

1. Double-click "main.cpp" and main.cpp will be displayed.
   
   
   
2. Modify LED name and Save Code.
   
   
   
3. Create binary file by clicking the "Compile" button.
   
4. After you get the binary file, copy the file to Mbed drive and check LED coloer by pushing reset button.
   

Add Blink LED¶

If you want to add blink LED, add "DigitalOut" difine in yout code as below.

DigitalOut addled_1(LED2);
DigitalOut addled_2(LED3);

Change Blink Timing¶

If you want to change timing of blink, modify argument of wait().
The wait() provides function that "Waits for a number of seconds".

#include "mbed.h"

DigitalOut myled(LED1);

int main() {
    while(1) {
        myled = 1;
//        wait(0.2);         //wait 0.2s
        wait(1);              //wait 1s
        myled = 0;
//        wait(0.2);         //wait 0.2s
        wait(1);              //wait 1s
    }
}

USE Other samples¶

At this point, you become to be able to import some sample code that you want, and you can modify the code as you want.
Let's import various sample code and try to execute.

Use A/D converter¶

Follow the procedure of "Let's blink LED". The program to import is below.

Use Serial Peripheral Interface(SPI)¶

1. Follow the procedure of "Let's blink LED". The program to import is below.

   Import programSPI_HelloWorld_Mbed

   SPI Hello World

   Last commit 12 Feb 2013 by mbed official

2. Before compile, edit main.cpp as below.

SPI spi(p5, p6, p7); // mosi, miso, sclk
DigitalOut cs(p8);

SPI spi(D11, D12, D13);   // mosi, miso, sclk
DigitalOut cs(D10);

Use microSD¶

1. Follow the procedure of "Let's blink LED". The program to import is below.
   During importing, the dialog appears.
   **DO NOT CHECK the "Update all libraries to the latest version".**
   Because the current version of SDFileSystem, will issue an error when you compile.

   Import programSDFileSystem_HelloWorld

   SD File System Hello World

   Last commit 16 May 2017 by mbed official

2. Update Mbed library or Mbed library sources(mbed-dev or mbed-src).
   
3. Before compile, edit main.cpp as below.

SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the Mbed Cool Components workshop board

SDFileSystem sd(P8_5, P8_6, P8_3, P8_4, "sd");

Use Ethernet¶

1. Follow the procedure of "Let's blink LED". The program to import is below.

   Import programTCPSocket_HelloWorld

   TCP Socket Hello World with Ethernet

   Last commit 14 May 2014 by mbed official

2. To specify MAC address, add fllowing function to main.cpp.
   

// set mac address
void mbed_mac_address(char *mac) {
    mac[0] = 0x00;
    mac[1] = 0x02;
    mac[2] = 0xF7;
    mac[3] = 0xF0;
    mac[4] = 0x00;
    mac[5] = 0x00;
}

Use GR-PEACH as USB Device¶

1. Follow the procedure of "Let's blink LED". The program to import is below.

   Import programUSBMouse_HelloWorld

   USBMouse Hello World

   Last commit 01 Mar 2013 by Samuel Mokrani

   If you want to use a function other a mouse, please see USBDevice page.
   

• Reference information
  • [USB]How to change the USB Speed
  • [USB]How to use the USB1 function of GR-PEACH rev.C

Use USB Host¶

1. To supply VBUS, please close JP3.
2. Follow the procedure of "Let's blink LED". The program to import is below.

   Import programUSBHostMouse_HelloWorld

   USBHostMouse Hello World

   Last commit 14 Mar 2013 by Samuel Mokrani

   If you want to use a function other a mouse, please see USBHost page.
   

• Reference information
  • [USB]How to change the USB Speed
  • [USB]How to use the USB1 function of GR-PEACH rev.C
  • [USB]USBHost Isochronous transfer

Use I2C¶

1. To pull up I2C signals, please close jumpers. Platform page shows which jumper is need to close.
2. Follow the procedure of "Let's blink LED". The program to import is below.

   Import programI2C_HelloWorld_Mbed

   Hello World for I2C

   Last commit 14 Feb 2013 by mbed official

3. Before compile, edit main.cpp as below.
   

I2C i2c(p28, p27);

I2C i2c(I2C_SDA, I2C_SCL);

Challenge!!¶

Let's take a look at the video of the camera by "GR-PEACH_WebCamera "!!¶

GR-PEACH can connect with GR-PEACH AUDIO CAMERA Shield .
GR-PEACH AUDIO CAMERA Shield provides CAMERA-IN, NTSC-IN, Line-OUT/IN, and more.
Let's challenge to monitoring of the camera image by using GR-PEACH AUDIO CAMERA Shield and GR-PEACH_WebCamera sample.
GR-PEACH_WebCamera sample needs the following H/W.

• Needed H/W
  • GR-PEACH
    
  • Audio/Camera Shield
  • CMOS Camera Module(MT9V111) or Analog Camera(NTSC)
  • Your PC
    
    

Appendix¶

Code debug¶

If you want to do code debugging, please refer following page.
Code debug by IDE DS 5