Zoltan Hudak
A custom Mbed board with LPC1768.
First of all I'd like to thank Franz Achatz for sharing his wonderful LPC mini project. Franz you have done an amazing job! The LPCmini PCB design is licensed under the TAPR Open Hardware License (www.tapr.org/OHL). Before publishing a modified version I tried to contact Franz and send him the modified documentation for approval. Unfortunately, I have never received a response so I hope he is OK.
Modifications in this version
These modifications are licensed under the TAPR Open Hardware License.
- Removed LED2, LED3 and LED4.
- Removed the FT232RL UART-to-USB converter including the USB connector.
- Added serial connector (for programming and debugging).
- Added connector for external Ethernet RMII module (LAN8720 or DP83848).
- Changed the 12MHz crystal package to SMD type.
- Changed the 32.768kHz crystal package to SMD type.
Schematic:
Board:
LPCmini zipped CAD files before the modification.
LPCmini zipped CAD files after the modification.
How to download:
Since Mbed wiki pages do not allow to upload .zip files anymore
- Right-click on the link above and select
Save link as...then save the file to your local drive. - Change the file extension from
.pngto.zip. - Unzip the file.
README.md@2:d69d6c929854, 2020-04-10 (annotated)
- Committer:
- hudakz
- Date:
- Fri Apr 10 17:58:14 2020 +0000
- Revision:
- 2:d69d6c929854
- Parent:
- 0:0e4128566848
A custom Mbed board with LPC1768.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| hudakz | 0:0e4128566848 | 1 |  |
| hudakz | 0:0e4128566848 | 2 | # Blinky Mbed OS example |
| hudakz | 0:0e4128566848 | 3 | |
| hudakz | 0:0e4128566848 | 4 | The example project is part of the [Arm Mbed OS Official Examples](https://os.mbed.com/code/) and is the [getting started example for Mbed OS](https://os.mbed.com/docs/mbed-os/v5.14/quick-start/index.html). It contains an application that repeatedly blinks an LED on supported [Mbed boards](https://os.mbed.com/platforms/). |
| hudakz | 0:0e4128566848 | 5 | |
| hudakz | 0:0e4128566848 | 6 | You can build the project with all supported [Mbed OS build tools](https://os.mbed.com/docs/mbed-os/latest/tools/index.html). However, this example project specifically refers to the command-line interface tool [Arm Mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). |
| hudakz | 0:0e4128566848 | 7 | (Note: To see a rendered example you can import into the Arm Online Compiler, please see our [import quick start](https://os.mbed.com/docs/mbed-os/latest/quick-start/online-with-the-online-compiler.html#importing-the-code).) |
| hudakz | 0:0e4128566848 | 8 | |
| hudakz | 0:0e4128566848 | 9 | 1. [Install Mbed CLI](https://os.mbed.com/docs/mbed-os/latest/quick-start/offline-with-mbed-cli.html). |
| hudakz | 0:0e4128566848 | 10 | |
| hudakz | 0:0e4128566848 | 11 | 1. Clone this repository on your system, and change the current directory to where the project was cloned: |
| hudakz | 0:0e4128566848 | 12 | |
| hudakz | 0:0e4128566848 | 13 | ```bash |
| hudakz | 0:0e4128566848 | 14 | $ git clone git@github.com:armmbed/mbed-os-example-blinky && cd mbed-os-example-blinky |
| hudakz | 0:0e4128566848 | 15 | ``` |
| hudakz | 0:0e4128566848 | 16 | |
| hudakz | 0:0e4128566848 | 17 | Alternatively, you can download the example project with Arm Mbed CLI using the `import` subcommand: |
| hudakz | 0:0e4128566848 | 18 | |
| hudakz | 0:0e4128566848 | 19 | ```bash |
| hudakz | 0:0e4128566848 | 20 | $ mbed import mbed-os-example-blinky && cd mbed-os-example-blinky |
| hudakz | 0:0e4128566848 | 21 | ``` |
| hudakz | 0:0e4128566848 | 22 | |
| hudakz | 0:0e4128566848 | 23 | |
| hudakz | 0:0e4128566848 | 24 | ## Application functionality |
| hudakz | 0:0e4128566848 | 25 | |
| hudakz | 0:0e4128566848 | 26 | The `main()` function is the single thread in the application. It toggles the state of a digital output connected to an LED on the board. |
| hudakz | 0:0e4128566848 | 27 | |
| hudakz | 0:0e4128566848 | 28 | ## Building and running |
| hudakz | 0:0e4128566848 | 29 | |
| hudakz | 0:0e4128566848 | 30 | 1. Connect a USB cable between the USB port on the board and the host computer. |
| hudakz | 0:0e4128566848 | 31 | 2. <a name="build_cmd"></a> Run the following command to build the example project and program the microcontroller flash memory: |
| hudakz | 0:0e4128566848 | 32 | ```bash |
| hudakz | 0:0e4128566848 | 33 | $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash |
| hudakz | 0:0e4128566848 | 34 | ``` |
| hudakz | 0:0e4128566848 | 35 | The binary is located at `./BUILD/<TARGET>/<TOOLCHAIN>/mbed-os-example-blinky.bin`. |
| hudakz | 0:0e4128566848 | 36 | |
| hudakz | 0:0e4128566848 | 37 | Alternatively, you can manually copy the binary to the board, which you mount on the host computer over USB. |
| hudakz | 0:0e4128566848 | 38 | |
| hudakz | 0:0e4128566848 | 39 | Depending on the target, you can build the example project with the `GCC_ARM`, `ARM` or `IAR` toolchain. After installing Arm Mbed CLI, run the command below to determine which toolchain supports your target: |
| hudakz | 0:0e4128566848 | 40 | |
| hudakz | 0:0e4128566848 | 41 | ```bash |
| hudakz | 0:0e4128566848 | 42 | $ mbed compile -S |
| hudakz | 0:0e4128566848 | 43 | ``` |
| hudakz | 0:0e4128566848 | 44 | |
| hudakz | 0:0e4128566848 | 45 | ## Expected output |
| hudakz | 0:0e4128566848 | 46 | The LED on your target turns on and off every 500 milliseconds. |
| hudakz | 0:0e4128566848 | 47 | |
| hudakz | 0:0e4128566848 | 48 | |
| hudakz | 0:0e4128566848 | 49 | ## Troubleshooting |
| hudakz | 0:0e4128566848 | 50 | If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it. |
| hudakz | 0:0e4128566848 | 51 | |
| hudakz | 0:0e4128566848 | 52 | ## Related Links |
| hudakz | 0:0e4128566848 | 53 | |
| hudakz | 0:0e4128566848 | 54 | * [Mbed OS Stats API](https://os.mbed.com/docs/latest/apis/mbed-statistics.html). |
| hudakz | 0:0e4128566848 | 55 | * [Mbed OS Configuration](https://os.mbed.com/docs/latest/reference/configuration.html). |
| hudakz | 0:0e4128566848 | 56 | * [Mbed OS Serial Communication](https://os.mbed.com/docs/latest/tutorials/serial-communication.html). |
| hudakz | 0:0e4128566848 | 57 | * [Mbed OS bare metal](https://os.mbed.com/docs/mbed-os/latest/reference/mbed-os-bare-metal.html). |
| hudakz | 0:0e4128566848 | 58 | * [Mbed boards](https://os.mbed.com/platforms/). |
| hudakz | 0:0e4128566848 | 59 | |
| hudakz | 0:0e4128566848 | 60 | ### License and contributions |
| hudakz | 0:0e4128566848 | 61 | |
| hudakz | 0:0e4128566848 | 62 | The software is provided under Apache-2.0 license. Contributions to this project are accepted under the same license. Please see contributing.md for more info. |
| hudakz | 0:0e4128566848 | 63 | |
| hudakz | 0:0e4128566848 | 64 | This project contains code from other projects. The original license text is included in those source files. They must comply with our license guide. |