Explorer Board

This example application demonstrates various capabilities of the Explorer board.

The example consists of pdm_mics to a simple audio processing pipeline which applies a variable gain. Pressing button 0 will increase the gain. Pressing button 1 will decrease the gain. The processed audio is sent to the DAC.

When button 0 is pressed, LED 0 will be lit. When button 1 is pressed, LED 1 will be lit. When the gain adjusted audio passes a frame power threshold, LED 2 will be lit. Lastly, LED 3 will blink periodically.

Additionally, the example demonstrates a simple flash, UART loopback and SPI setup.

Preparing the hardware

The UART loopback section of the demo requires that a jumper cable be connected between X1D36 and X1D39. This connects the Tx pin to the Rx pin.

Deploying the firmware with Linux or macOS

Building the firmware

Run the following commands in the xcore_iot root folder to build the firmware:

cmake -B build -DCMAKE_TOOLCHAIN_FILE=xmos_cmake_toolchain/xs3a.cmake
cd build
make example_bare_metal_explorer_board

Running the firmware

From the build folder run:

make run_example_bare_metal_explorer_board

Debugging the firmware with xgdb

From the build folder run:

make debug_example_bare_metal_explorer_board

Deploying the firmware with Windows

Building the firmware

Run the following commands in the xcore_iot root folder to build the firmware:

cmake -G "NMake Makefiles" -B build -DCMAKE_TOOLCHAIN_FILE=xmos_cmake_toolchain/xs3a.cmake
cd build
nmake example_bare_metal_explorer_board

Running the firmware

From the build folder run:

nmake run_example_bare_metal_explorer_board

Debugging the firmware with xgdb

From the build folder run:

nmake debug_example_bare_metal_explorer_board