Support for MH-ET LIVE MiniKit for ESP32. More...
Support for MH-ET LIVE MiniKit for ESP32.
The MH-ET LIVE MiniKit for ESP32 uses the ESP32-WROOM-32 module. It is a very interesting development kit as it uses in the stackable Wemos D1 Mini format. Thus, all shields for Wemos D1 mini for ESP8266 can also be used with ESP32. Examples for such shields are:
This makes it possible to create different hardware configurations without the need for a soldering iron or a breadboard.
MH-ET LIVE MiniKit for ESP32 belongs to the class of general purpose boards where most ESP32 pins are broken out for easier access.
This stackable platform was tested in an RIOT application with:
This application is a good example how easy it is with this board to create different hardware applications.
This section describes
Most features of the board are provided by the ESP32 SoC. For detailed information about the ESP32, see section MCU ESP32.
The following table shows the default board configuration, which is sorted according to the defined functionality of GPIOs. This configuration can be overridden by an application-specific configuration.
|Pin||Default Configuration*||Optional Modules*||Remarks / Prerequisites||Configuration|
|GPIO2||PWM_DEV(0):0 / LED blue||PWM Channels|
|GPIO5||SPI_DEV(0):CS0||SD Card CS||when module sdcard_spi is used||SPI Interfaces|
|GPIO1||UART_DEV(0):TxD||Console (configuration is fixed)||UART interfaces|
|GPIO3||UART_DEV(0):RxD||Console (configuration is fixed)||UART interfaces|
|GPIO16||-||MRF24J40 RESET||when module mrf24j40 is used|
|GPIO17||-||MRF24J40 INT||when module mrf24j40 is used|
|GPIO26||-||MRF24J40 CS||when module mrf24j40 is used|
* Default configuration cannot be used or is not available at all when the the optional hardware is used.
For detailed information about the configuration of ESP32 boards, see section Common Peripherals.
ENC28J60-based Ethernet network interface modules have been tested with the board. You could use the following code in your application-specific configuration to use such a module:
For ENC28J80_PARAM_SPI the default parameter defined by the driver can be used.
The following picture shows the pinout of MH-ET LIVE MiniKit for ESP32 board as defined by the default board configuration. The light green GPIOs are not used by configured on-board hardware components and can be used for any purpose. However, if optional off-board hardware modules are used, these GPIOs may also be occupied, see optional functions in table board configuration.
The corresponding board schematic can be found here
Flashing RIOT is quite easy. The board has a Micro-USB connector with a reset/boot/flash logic. Just connect the board to your host computer using the programming port and type:
For detailed information about ESP32 as well as configuring and compiling RIOT for ESP32 boards, see RIOT-OS on ESP32 boards.
|Board specific configuration for the Arduino API. |
|Mapping from MCU pins to Arduino pins. |
|Board specific definitions for MH-ET LIVE MiniKit for ESP32. |
|Definitions for Wemos stackable hardware modules (shields) |
|Board specific configuration of direct mapped GPIOs. |
|Peripheral MCU configuration for MH-ET LIVE MiniKit for ESP32. |