History

Yilin Sun 6e8d03ec0a Updated to SDK v2.15.000 Signed-off-by: Yilin Sun <imi415@imi.moe>		2024-04-12 21:21:49 +08:00
..
armgcc	Updated to SDK v2.15.000	2024-04-12 21:21:49 +08:00
board.c	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
board.h	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
clock_config.c	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
clock_config.h	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
i2s_interrupt_record_playback_v3_14.xml	Updated to SDK v2.15.000	2024-04-12 21:21:49 +08:00
i2s_interrupt_record_playback.c	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
music.h	Updated to SDK v2.15.000	2024-04-12 21:21:49 +08:00
pin_mux.c	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
pin_mux.h	Stock SDK v2.11.0	2022-04-08 22:42:47 +08:00
readme.md	Updated to SDK v2.15.000	2024-04-12 21:21:49 +08:00

readme.md

Overview

The I2S example project uses one I2S interface to continuously record input sound to a buffer and another I2S interface to playback the buffer to output - digital loopback.

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
LPCXpresso55s69 board
Personal Computer
headphones with 3.5 mm stereo jack
source of sound (line output to 3.5 mm stereo jack)

Prepare the Demo

Connect headphones to Audio HP / Line-Out connector.
Connect source of sound(from PC or Smart phone) to Audio Line-In connector.
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (P6) on the 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

Headphones will play what is input into Audio Line-In connector. Terminal window will show:

Configure codec
Configure I2S
Setup digital loopback