K70例程022：I2S音频驱动_SGTL5000_SDHC_MQX_K70EKT7
使用J-LinkV8MDKKeil版本4.71
调试串口波特率：115200
关键词: Freescale 飞思卡尔 Kinetis Cortex-M4 K70 MDKK70 核心板 开发板 例程 SGTL5000 SDHC MQX I2S
实验现象：
串口输出：
Setting up time......................
Initializing audio codec.............
Creating shell task..................
Creating SD card task................
Audio driver demo application
Shell (build: Dec5 2013)
Copyright (c) 2008 Freescale Semiconductor;
shell>
shell>
SD card installed to "a:"
shell>help
Available commands:
cd <directory>
del <file>
dir [<filespec>] [<attr>]]
exit
help [<command>]
mkdir <directory>
ren <oldname> <newname>
rmdir <directory>
play <device> <filename>
record <device> <filename> <format>
?
shell> dir
A.WAV 441044 12-06-2013 11:35:56 A A.WAV
BB.WAV 4399198 12-06-2013 14:17:12 A BB.WAV
shell> play sai: a:/bb.wav
Playback information
Sampling frequency: 22050 Hz
Bit depth: 16 bits
Channels: mono
Data rate: 44 kbyte/s
----------------------------------------------
Playing a file...DONE
----------------------------------------------
Playback stats
Total interrupts: 549934
Bytes requested for transmit:4399154
Bytes transmitted: 4399154
Underruns of hardware FIFO: 0
Software buffer empty: 39
----------------------------------------------
shell>
该K70音频例程基于MQX操作系统,仅支持wav文件播放，文件放置于SD/TF卡中并插到K70EK上，更多信息请参考MQX例程。
运行效果图： SGTL5000是之前做播放器的SIGMATEL的音频芯片，后来被Freescale收购，有兴趣的同学可以了解一下这段历史 先放一个烧写包，如果大家有兴趣，跟帖到10个，我再来放个源码包 放源代码呀，正在学习K70 谢谢楼主分享
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