.. _hpm6750evkmini:

HPM6750EVKMINI
==============

Overview
--------

The HPM6750 is a dual-core flashless MCU running 816Mhz. It has a 2MB continuous on-chip ram. Also, it provides various memory interfaces, including SDRAM, Quad SPI NOR Flash, SD/eMMC. It integrates rich audio and video interfaces, including LCD, pixel DMA, camera, and I2S audio interfaces.

.. image:: ../../../../boards/hpm6750evkmini/doc/hpm6750evkmini.png
   :alt: hpm6750evkmini
   :align: center

Hardware
--------

- HPM6750IVM MCU (816Mhz, 2MB OCRAM)
- Onboard Memory

  - 128Mb SDRAM
  - 64Mb Quad SPI NOR Flash

- Display & Camera

  - LCD connector
  - Camera (DVP)

- WiFi

  - RW007 over SPI

- USB

  - USB type C (USB 2.0 OTG) connector x2

- Audio

  - Mic
  - DAO

- Others

  - TF Slot
  - FT2232
  - Beeper
  - RGB LED

- Expansion port

  - ART-PI extension port

DIP Switch S1
-------------

.. list-table::
   :header-rows: 1

   * - bit[2:1]
     - Description
   * - OFF, OFF
     - Boot from Quad SPI NOR flash
   * - OFF, ON
     - Serial boot
   * - ON, OFF
     - ISP

.. _hpm6750evkmini_buttons:

Button
------

.. list-table::
   :header-rows: 1

   * - Name
     - FUNCTIONS
   * - PBUTN (S2)
     - Power Button, TinyUF2 Boot Button, GPIO Button
   * - WBUTN (S3)
     - WAKE UP Button
   * - RESET (S4)
     - Reset Button

.. _hpm6750evkmini_pins:

Pin Description
---------------

- SPI Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - SPI2.CSN
     - P1[24]
   * - SPI2.SCLK
     - P1[23]
   * - SPI2.MISO
     - P1[21]
   * - SPI2.MOSI
     - P1[19]

- I2C Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - I2C0.SCL
     - P1[13]
   * - I2C0.SDA
     - P1[15]

- UART for core1 debug console

.. list-table::
   :header-rows: 1

   * - Function
     - Position
     - Remark
   * - UART13.TXD
     - P1[8]
     -
   * - UART13.RXD
     - P1[10]
     -
   * - UART13.break
     - P1[24]
     - generate uart break signal

- ACMP Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - CMP.INN6
     - P2[11]
   * - CMP.COMP_1
     - P1[7]

- GPTMR Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
     - Remark
   * - GPTMR5.CAPT_1
     - P1[12]
     -
   * - GPTMR5.COMP_0
     - P1[31]
     - MCLK of i2s emulation
   * - GPTMR5.COMP_1
     - P1[35]
     - LRCK of i2s emulation
   * - GPTMR5.COMP_2
     - P2[38]
     - BLCK of i2s emulation

- ADC12 Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - ADC12 Reference Voltage Setting
     - N/A
   * - ADC0.VINP14
     - P1[33]

- ADC16 Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - ADC16 Reference Voltage Setting
     - N/A
   * - ADC3.INA2
     - P1[16]

- PWM Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - PWM0.P4
     - P1[29]
   * - PWM0.P5
     - P1[32]

- DAO interface

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - Speaker
     - J2

- I2S pin

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - I2S0.FCLK
     - P1[35]
   * - I2S0.BCLK
     - P1[12]
   * - I2S0.RXD1
     - P1[38]
   * - I2S0.TXD1
     - P1[40]
   * - GND
     - P1[39]

- Ethernet PPS Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Pin
     - Position
   * - ENET0.EVTO0
     - PF05
     - P1[38]
   * - ENET0.EVTO1
     - PF06
     - P1[12]
   * - ENET0.EVTO2
     - PF09
     - P1[35]
   * - ENET0.EVTI0
     - PF00
     - P1[26]
   * - ENET0.EVTI1
     - PF01
     - P1[27]
   * - ENET0.EVTI2
     - PF02
     - P1[28]

- UART13 pin

  The UART13 is used for core1 debug console or some functional testing using UART, such as uart_software_rx_idle, uart_rx_timeout, uart_software_lin, MICROROS_UART, USB_CDC_ACM_UART, MODBUS_RTU etc.

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - UART13.TXD
     - P1[8]
   * - UART13.RXD
     - P1[10]

- TRGMUX pin for uart_software_rx_idle sample

.. list-table::
   :header-rows: 1

   * - Function
     - Position
   * - TRGM2_P9 (PD19)
     - P2[35]

- Motor Pin

  Refer to section :ref:`hpm6750evkmini_to_motor_220530reva` for configuration

- Tamper Pin

.. list-table::
   :header-rows: 1

   * - Function
     - Pin
     - Position
     - Mode
   * - TAMP.08
     - PZ08
     - P1[10]
     - Active Mode
   * - TAMP.09
     - PZ09
     - P1[8]
     - Active Mode
   * - TAMP.10
     - PZ10
     - P1[22]
     - Passive Mode

- CS Pin of i2s emulation

.. list-table::
   :header-rows: 1

   * - Function
     - Position
     - Remark
   * - PD25
     - P2[40]
     - the pin that controls the SPI slave CS

- CLOCK REF Pin

  .. list-table::
     :header-rows: 1

     * - Function
       - Position
     * - PE24
       - P2[16]

Known Issues
------------

- Some samples may enter the trap handler during runtime, with a MCAUSE == 2 (instruction error). This is due to a flaw in ILM, as detailed in the Errata Manual E00001.

  - Solution: Change the ILM interface address in the link script to ILM_SLV address.