Hardware requirements

• Micro USB cable

• EVK-MIMXRT685 board

• Personal Computer

Board settings

Prepare the Demo

1. Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) on the board

2. Open a serial terminal with the following settings:

   • 115200 baud rate

   • 8 data bits

   • No parity

   • One stop bit

   • No flow control

3. Download the program to the target board.

4. Launch the debugger in your IDE to begin running the demo.

Running the demo

NOTE: Depending on the toolchain configuration, the benchmark result might be different.

CMSIS DSP benchmark fft test start.
arm_rfft_q15Test: xxx
arm_rfft_q31Test: xxx
arm_cfft_q15Test: xxx
arm_cfft_q31Test: xxx
arm_ifft_q15Test: xxx
arm_ifft_q31Test: xxx
arm_dct4_q15Test: xxx
arm_dct4_q31Test: xxx

CMSIS DSP benchmark fft test succeeded.