# LPC176x

**Repository Path**: case912/LPC176x

## Basic Information

- **Project Name**: LPC176x
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: GPL-3.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-01-18
- **Last Updated**: 2026-01-18

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## LPC176x grblHAL driver

A GrblHAL driver for NXP LPC1768 and LPC1769 processors.

Loosely based on the official [grbl-LPC port](https://github.com/gnea/grbl-LPC).

See the Wiki-page for [compiling grblHAL](https://github.com/grblHAL/core/wiki/Compiling-GrblHAL) for instructions for how to import the project, configure the driver and compile.

Available driver options can be found [here](src/my_machine.h).

__Update 2020-12-11:__
* Added initial board map file for Bigtreetech SKR V1.3 Turbo board.

__Update 2020-11-21:__
* Added initial board map file for [BTT SKR V1.4 Turbo board](https://www.bigtree-tech.com/products/btt-skr-v1-4-skr-v1-4-turbo-32-bit-control-board.html).
* Added polling of limit switches, enabling hard limits is now possible.

A build option for creating a _Firmware.bin_ file that can be used for programming via the Smoothieboard DFU-bootloader has been added to build configurations.  
Select the _BL_0x4000_ configuration from the build tool dropdown to build, and programming can then be done via SD card transfer:  
![Config](media/LPC176x_config.png)  
_Firmware.bin_ is found in the _BL_0x4000_ project folder after a successful build.

__Update 2020-01-01:__

* Added [board map](./Re-ARM%20Shield%20pin%20mappings/ramps_1.6_map.md) file for [Ramps 1.6](https://reprap.org/wiki/RAMPS_1.6) on [Re-ARM board](https://www.panucatt.com/Re_ARM_for_RAMPS_p/ra1768.htm) hacked for programming via Segger J-Link. Improved pin assignment handling and fixed some bugs. USB comms and SD card seems to be working ok for this board, however only limited testing done.

__Update 2019-08-08:__

* Changed IDE to [MCUXpresso v11](https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools/mcuxpresso-integrated-development-environment-ide:MCUXpresso-IDE) and linked against [LPCOpen development platform](https://www.nxp.com/design/microcontrollers-developer-resources/lpcopen-libraries-and-examples/lpcopen-software-development-platform-lpc17xx:LPCOPEN-SOFTWARE-FOR-LPC17XX) libraries. I2C EEPROM on [OM13085 LPCXpresso board](https://www.nxp.com/design/microcontrollers-developer-resources/lpc-microcontroller-utilities/lpcxpresso-board-for-lpc1769-with-cmsis-dap-probe:OM13085) and SD card supported. 

---
#### Board maps:

|                                                                                                                     |N_AXIS|Ganged axes<sup>1</sup>|EEPROM<sup>2</sup>|SD card |Modbus|I2C Keypad|Encoders|Digital I/O|Analog I/O|
|---------------------------------------------------------------------------------------------------------------------|------|-----------------------|------------------|--------|------|----------|--------|-----------|----------|
|Generic                                                                                                              |max 5 |no                     |external          |external|no    |no        | -      | -         | -        |
|[BOARD_RAMPS_16](https://reprap.org/wiki/RAMPS_1.6)                                                                  |max 5 |no                     |external          |external|no    |no        | -      | -         | -        |
|[BOARD_BTT_SKR_13](https://duckduckgo.com/?t=ffsb&q=btt+skr+1.3&ia=web)                                              |max 5 |no                     |external          |onboard |no    |no        | -      | -         | -        |
|[BOARD_BTT_SKR_14_TURBO](https://www.bigtree-tech.com/products/btt-skr-v1-4-skr-v1-4-turbo-32-bit-control-board.html)|max 5 |no                     |external          |onboard |no    |no        | -      | -         | -        |
|[BOARD_MKS_SBASE_13](https://github.com/makerbase-mks/MKS-SBASE)                                                     |max 5 |no                     |external          |onboard |no    |no        | -      | -         | -        |
|[SMOOTHIEBOARD](https://smoothieware.org/smoothieboard)                                                              |max 5 |no                     |external          |onboard |no    |no        | -      | -         | -        |

<sup>1</sup> Each enabled reduces N_AXIS with one. Currently the board map file must be edited to enable ganged/auto squared axes.  
<sup>2</sup> I<sup>2</sup>C EEPROM \(or FRAM\) is [optional](https://github.com/grblHAL/Plugin_EEPROM/blob/master/README.md) and must be added externally. FRAM is recommended when the [Odometer plugin](https://github.com/grblHAL/Plugin_odometer/blob/master/README.md) is added to the build.  

---
2021-04-28