mbed API for Raspberry Pi boards.
mbedPi
This is an attempt to implement a limited number of mbed APIs for Raspberry Pi single-board computers. The project was inspired by and based on the arduPi library developed for the Arduino by Cooking Hacks .
Specifications
- Chip: Broadcom BCM2836 SoC
- Core architecture: Quad-core ARM Cortex-A7
- CPU frequency: 900 MHz
- GPU: Dual Core VideoCore IV® Multimedia Co-Processor
- Memory: 1GB LPDDR2
- Operating System: Boots from Micro SD card, running a version of the Linux operating system
- Power: Micro USB socket 5V, 2A
Connectors
- Ethernet: 10/100 BaseT Ethernet socket
- Video Output: HDMI (rev 1.3 & 1.4)
- Audio Output: 3.5mm jack, HDMI
- USB: 4 x USB 2.0 Connector
- GPIO Connector: 40-pin 2.54 mm (100 mil) expansion header: 2x20 strip providing 27 GPIO pins as well as +3.3 V, +5 V and GND supply lines
- Camera Connector: 15-pin MIPI Camera Serial Interface (CSI-2)
- JTAG: Not populated
- Display Connector: Display Serial Interface (DSI) 15 way flat flex cable connector with two data lanes and a clock lane
- Memory Card Slot: Micro SDIO
GPIO connector pinout
Information
Only the labels printed in blue/white or green/white (i.e. p3, gpio2 ...) must be used in your code. The other labels are given as information (alternate-functions, power pins, ...).
Building programs for the Raspberry Pi with mbedPi
I use Qt Creator for development, however you can use any other IDE available on the Raspberry Pi (e.g. Geany) if you like. For a quick try:
- Install Qt and the Qt Creator onto your Raspberry Pi. Then create a new "Blinky" Plain non-Qt C++ Project as follows:
- Change the main code as below:
main.cpp
#include "mbedPi.h" int main() { DigitalOut myled(p7); while(1) { myled = 1; // LED is ON wait(0.2); // 200 ms myled = 0; // LED is OFF wait(1.0); // 1 sec printf("Blink\r\n"); } }
- Copy the mbedPi.zip file into your project's folder and unzip.
- Add the mbedPi.h and mbedPi.cpp files to your project by right clicking on the "Blinky" project and then clicking on the "Add Existing Files..." option in the local menu:
- Double click on Blinky.pro to open it for editing and add new libraries by inserting a new line as follows:
- Compile the project.
- Connect an LED through a 1k resistor to pin 7 and the ground on the Raspberry Pi GPIO connector.
- Run the binary as sudo (sudo ./Blinky) and you should see the LED blinking.
- Press Ctrl+c to stop running the application.
include/mbed.h@1:1f2d9982fa8c, 21 months ago (annotated)
- Committer:
- hudakz
- Date:
- Tue Dec 20 12:08:07 2022 +0000
- Revision:
- 1:1f2d9982fa8c
mbed API for Raspberry Pi boards equipped with BCM2836 SoC.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
hudakz | 1:1f2d9982fa8c | 1 | /* |
hudakz | 1:1f2d9982fa8c | 2 | * Copyright (C) 2016 Zoltan Hudak |
hudakz | 1:1f2d9982fa8c | 3 | * hudakz@outlook.com |
hudakz | 1:1f2d9982fa8c | 4 | * |
hudakz | 1:1f2d9982fa8c | 5 | * Parts Copyright (C) Libelium Comunicaciones Distribuidas S.L. |
hudakz | 1:1f2d9982fa8c | 6 | * http://www.libelium.com |
hudakz | 1:1f2d9982fa8c | 7 | * |
hudakz | 1:1f2d9982fa8c | 8 | * This program is free software: you can redistribute it and/or modify |
hudakz | 1:1f2d9982fa8c | 9 | * it under the terms of the GNU General Public License as published by |
hudakz | 1:1f2d9982fa8c | 10 | * the Free Software Foundation, either version 3 of the License, or |
hudakz | 1:1f2d9982fa8c | 11 | * (at your option) any later version. |
hudakz | 1:1f2d9982fa8c | 12 | * |
hudakz | 1:1f2d9982fa8c | 13 | * This program is distributed in the hope that it will be useful, |
hudakz | 1:1f2d9982fa8c | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
hudakz | 1:1f2d9982fa8c | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
hudakz | 1:1f2d9982fa8c | 16 | * GNU General Public License for more details. |
hudakz | 1:1f2d9982fa8c | 17 | * |
hudakz | 1:1f2d9982fa8c | 18 | * You should have received a copy of the GNU General Public License |
hudakz | 1:1f2d9982fa8c | 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
hudakz | 1:1f2d9982fa8c | 20 | * |
hudakz | 1:1f2d9982fa8c | 21 | * Version 1.0 |
hudakz | 1:1f2d9982fa8c | 22 | */ |
hudakz | 1:1f2d9982fa8c | 23 | // |
hudakz | 1:1f2d9982fa8c | 24 | |
hudakz | 1:1f2d9982fa8c | 25 | #ifndef MBEDPI_H |
hudakz | 1:1f2d9982fa8c | 26 | #define MBEDPI_H |
hudakz | 1:1f2d9982fa8c | 27 | |
hudakz | 1:1f2d9982fa8c | 28 | #include "BCM2835.h" |
hudakz | 1:1f2d9982fa8c | 29 | #include "Thread.h" |
hudakz | 1:1f2d9982fa8c | 30 | #include "ThisThread.h" |
hudakz | 1:1f2d9982fa8c | 31 | #include "Peripheral.h" |
hudakz | 1:1f2d9982fa8c | 32 | #include "PinNames.h" |
hudakz | 1:1f2d9982fa8c | 33 | #include "DigitalIn.h" |
hudakz | 1:1f2d9982fa8c | 34 | #include "DigitalOut.h" |
hudakz | 1:1f2d9982fa8c | 35 | #include "DigitalInOut.h" |
hudakz | 1:1f2d9982fa8c | 36 | #include "InterruptIn.h" |
hudakz | 1:1f2d9982fa8c | 37 | #include "Serial.h" |
hudakz | 1:1f2d9982fa8c | 38 | #include "I2C.h" |
hudakz | 1:1f2d9982fa8c | 39 | #include "SPI.h" |
hudakz | 1:1f2d9982fa8c | 40 | #include "Timer.h" |
hudakz | 1:1f2d9982fa8c | 41 | #include "PwmOut.h" |
hudakz | 1:1f2d9982fa8c | 42 | #include "wait.h" |
hudakz | 1:1f2d9982fa8c | 43 | |
hudakz | 1:1f2d9982fa8c | 44 | #endif // MBEDPI_H |
hudakz | 1:1f2d9982fa8c | 45 |