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.. | ||
armgcc | ||
board.c | ||
board.h | ||
clock_config.c | ||
clock_config.h | ||
dcd.c | ||
dcd.h | ||
evkmimxrt1020_sdram_init.jlinkscript | ||
music.h | ||
pin_mux.c | ||
pin_mux.h | ||
readme.md | ||
sai_interrupt_v3_14.xml | ||
sai_interrupt.c |
Overview
The sai_interrupt example shows how to use sai functional API to implement interrupt playback:
In this example, one sai instance playbacks the audio data stored in flash/SRAM using interrupt.
SDK version
- Version: 2.15.000
Toolchain supported
- IAR embedded Workbench 9.40.1
- Keil MDK 5.38.1
- GCC ARM Embedded 12.2
- MCUXpresso 11.8.0
Hardware requirements
- Mini/micro USB cable
- EVK-MIMXRT1020 board
- Personal Computer
- Headphone
Board settings
No special settings are required.
Prepare the Demo
- Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
- Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
- Download the program to the target board.
- Insert the headphones into the headphone jack on EVK-MIMXRT1020 board.
- Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
Note: This demo outputs 215HZ sine wave audio signal. When the demo runs successfully, you can hear the tone and the log would be seen on the OpenSDA terminal like:
SAI functional interrupt example started!
SAI functional interrupt example finished!
Note: To debug in qspiflash, following steps are needed:
- Select the flash target and compile.
- Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J23.
- Start debugging in IDE.
- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.