# HPM5301EVKLITE

## Overview

HPM5301EVKLite is a development board based on Xianji's entry-level high-performance MCU HPM5301. HPM5301EVKLite provides a USB Type-C interface for high-speed USB-OTG functionality, with onboard buttons and LEDs for convenient user interaction. It also provides an extension interface that is compatible with Raspberry Pi and a standard JTAG debugging interface.

![hpm5301evklite](doc/hpm5301evklite.png "hpm5301evklite")

## Console information printing

By default, UART0 is used for console printing. Connect UART0.TXD (J3.36) and UART0.RXD (J3.38) externally through the USB to serial port tool.

## Boot Switch

- KEY&BOOT controls boot mode

  Note：
- The default working mode is flash boot mode.
- Follow the below steps to enter ISP boot mode:
  1. press reset
  2. press key
  3. release reset
  4. release key

| KEY      | Description                  |
| -------- | ---------------------------- |
| OFF      | Boot from Quad SPI NOR flash |
| ON       | ISP                          |

## Button

(lab_hpm5301evklite_board_buttons)=

| Name     | FUNCTIONS                        |
| -------- | -------------------------------- |
| RESET    | Reset Button                     |
| KEY&BOOT | User Key & Boot switch           |

## Pin Description

(lab_hpm5301_evklite_board)=

- UART Pin: modbus_rtu sample
  - The UART0 used for debugger console or some functional testing using UART
  - The UART3 is used for some functional testing using UART, such as MICROROS_UART, USB_CDC_ACM_UART, MODBUS_RTU etc.

| Function  | Position | Remark   |
| --------- | -------- | ------   |
| UART3.TXD | J3[8]    |
| UART3.RXD | J3[10]   |
| UART0.TXD | J3[36]   |
| UART0.RXD | J3[38]   |
| UART3.break | J3[24] | generate uart break signal |

- SPI Pin：

| Function  | Position |
| --------- | -------- |
| SPI1.CSN  | J3[24]   |
| SPI1.SCLK | J3[23]   |
| SPI1.MISO | J3[21]   |
| SPI1.MOSI | J3[19]   |

- I2C Pin：

| Function | Position |
| -------- | -------- |
| I2C3.SCL | J3[28]    |
| I2C3.SDA | J3[27]    |

- ACMP Pin:

| Function       | Position |
| -------------- | -------- |
| ACMP.CMP1.INN4 | J3[13]   |
| ACMP.COMP_1    | J3[3]    |

- ADC16 Pin:

| Function   | Position |
| ---------- | -------- |
| ADC0.INA2  | J3[26]   |
| ADC1.INA1  | J3[3]    |

- TinyUF2 Pin :

  Note：
  - PA9 connect GND， and press reset, board enter DFU mode, then PA9 connect 3.3V, drag app to U disk, will download app and enter app directly if successfully;
  - PA9 connect 3.3V，and press reset, board enter bootloader mode, if flash has the valid app, will directly enter app；

| 功能           | 位置    |
| -------------- | ------ |
| TinyUF2 Button | J3[32] |

- GPTMR Pin:

| Function      | Position | Remark   |
| ------------- | -----    | ------  |
| GPTMR0.CAPT_1 | J3[3]  |
| GPTMR0.COMP_1 | J3[5]  |
| GPTMR0.COMP_3 | J3[8]    | BCLK of i2s emulation |
| GPTMR0.COMP_2 | J3[26]   | LRCK of i2s emulation |
| GPTMR1.COMP_1 | J3[7]    | MLCK of i2s emulation |

- CS Pin of i2s emulation

| Function | Position   |  Remark |
| ----     | -----      | ------ |
| PA31     | J3[11]     | the pin that controls the SPI slave CS |