| .. _lpcxpresso11u68: |
| |
| NXP LPCXpresso11U68 |
| ################### |
| |
| Overview |
| ******** |
| |
| The LPCXpresso11u68 development board uses an NXP LPC11U68 MCU based |
| on an ARM Cortex-M0+ core. |
| |
| .. figure:: lpcxpresso11u68.jpg |
| :align: center |
| :alt: LPCXpresso11U68 |
| |
| Hardware |
| ******** |
| |
| The LPCxpresso 11U68 board provides the following hardware components: |
| |
| - LPC11U68 microcontroller in LQFP100 package |
| - ARM Cortex-M0+ |
| - Memory: |
| |
| - 256KB of flash memory |
| - 32KB of SRAM |
| - 2x2KB of additional SRAM |
| - 4 KB EEPROM |
| - USB: |
| |
| - USB 2.0 Full-Speed device controller |
| - DMA controller |
| - 5x USART |
| - 2x I2C |
| - 2x SSP with DMA support |
| - Board power supply: through USB bus or external power supply (3V and 5V) |
| - Arduino connectors compatible with the 'Arduino UNO' platform |
| - Tri-color user LED, Power On Led, Reset LED |
| - Three push buttons: target reset, ISP and user |
| |
| More information can be found here: |
| |
| - `LPC11UXX SoC Website`_ |
| - `LPC11U6X Datasheet`_ |
| - `LPC11U6X Reference Manual`_ |
| - `LPCXPRESSO11U68 Website`_ |
| - `LPCXPRESSO11U68 Schematics`_ |
| |
| Supported Features |
| ================== |
| |
| The lpcxpresso11U68 supports the following features: |
| |
| +-----------+------------+-------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+=====================================+ |
| | NVIC | on-chip | nested vector interrupt controller | |
| +-----------+------------+-------------------------------------+ |
| | SYSTICK | on-chip | systick | |
| +-----------+------------+-------------------------------------+ |
| | IOCON | on-chip | pinmux | |
| +-----------+------------+-------------------------------------+ |
| | CLOCK | on-chip | clock and reset control | |
| +-----------+------------+-------------------------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | I2C | on-chip | i2c master/slave controller | |
| +-----------+------------+-------------------------------------+ |
| | UART | on-chip | serial port-polling; | |
| | | | serial port interrupt | |
| +-----------+------------+-------------------------------------+ |
| | EEPROM | on-chip | eeprom | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware is not yet supported on Zephyr. |
| |
| Connections and IOs |
| =================== |
| |
| The IOCON controller can be used to configure the LPC11U68 pins. |
| |
| +---------+-----------------+----------------------------+ |
| | Name | Function | Usage | |
| +=========+=================+============================+ |
| | PIO2_11 | UART | USART RX | |
| +---------+-----------------+----------------------------+ |
| | PIO2_12 | UART | USART TX | |
| +---------+-----------------+----------------------------+ |
| | PIO2_16 | GPIO | GREEN LED | |
| +---------+-----------------+----------------------------+ |
| | PIO2_17 | GPIO | RED LED | |
| +---------+-----------------+----------------------------+ |
| | PIO2_18 | GPIO | BLUE_LED | |
| +---------+-----------------+----------------------------+ |
| | PIO0_4 | I2C | I2C SCL | |
| +---------+-----------------+----------------------------+ |
| | PIO0_5 | I2C | I2C SDA | |
| +---------+-----------------+----------------------------+ |
| |
| |
| Programming and Debugging |
| ************************* |
| |
| Flashing |
| ======== |
| |
| The LPCXpresso11U68 board can be flashed by using the on-board LPC-Link2 debug |
| probe (based on a NXP LPC43xx MCU). This MCU provides either a CMSIS-DAP or |
| a J-Link interface. It depends on the embedded firmware image. The default |
| OpenOCD configuration supports the the CMSIS-DAP interface. If you want to |
| switch to J-Link, then you need to edit the |
| ``boards/arm/lpcxpresso11u68/support/openocd.cfg`` file and to replace:: |
| |
| source [find interface/cmsis-dap.cfg] |
| |
| with:: |
| |
| source [find interface/jlink.cfg] |
| |
| .. note:: |
| The firmware image of the LPC-Link2 can be updated using the |
| `LPCScrypt tool <https://www.nxp.com/design/microcontrollers-developer-resources/lpc-microcontroller-utilities/lpcscrypt-v2-1-1:LPCSCRYPT>`_. |
| |
| .. note:: |
| The `Mbed project <https://os.mbed.com>`_ also provides some firmware images |
| `here <https://os.mbed.com/teams/NXP/wiki/Updating-LPCXpresso-firmware>`_. |
| In addition to a CMSIS-DAP interface, they also provide a convenient update |
| mechanism through a pseudo USB disk. |
| |
| Here are the steps to flash a firmware you built into a LPCXpresso11U68 board: |
| |
| #. Connect the "Link" micro-B USB port to your host computer. |
| #. Next, simply run the ``west flash`` command |
| |
| Debugging |
| ========= |
| |
| Please refer to the `Flashing`_ section and run the ``west debug`` command |
| instead of ``west flash``. |
| |
| References |
| ********** |
| |
| - `LPC11UXX SoC Website`_ |
| - `LPC11U6X Datasheet`_ |
| - `LPC11U6X Reference Manual`_ |
| - `LPCXPRESSO11U68 Website`_ |
| - `LPCXPRESSO11U68 Schematics`_ |
| |
| .. _LPC11UXX SoC Website: |
| https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc1100-cortex-m0-plus-m0/scalable-entry-level-32-bit-microcontroller-mcu-based-on-arm-cortex-m0-plus-and-cortex-m0-cores:LPC11U00 |
| |
| .. _LPC11U6X Datasheet: |
| https://www.nxp.com/docs/en/data-sheet/LPC11U6X.pdf |
| |
| .. _LPC11U6x Reference Manual: |
| https://www.nxp.com/webapp/Download?colCode=UM10732 |
| |
| .. _LPCXPRESSO11U68 Website: |
| https://www.nxp.com/design/microcontrollers-developer-resources/lpc-microcontroller-utilities/lpcxpresso-board-for-lpc11u68:OM13058 |
| |
| .. _LPCXPRESSO11U68 Schematics: |
| https://www.nxp.com/downloads/en/schematics/LPC11U68_Xpresso_v2_Schematic_RevC_1.pdf |