Daiki Kato
This is a sample that drives a speaker with PWM.
Fork of
GR-PEACH_Audio_WAV
by 
Renesas
This is a sample that drives a speaker with PWM. This sample will play a ".wav" file of the microSD or USB memory root folder. If the USER_BUTTON0 is pressed, the next song is played.
| Format | Wav file (RIFF format) ".wav" |
| Channel | 1ch and 2ch |
| Frequencies | 32kHz, 44.1kHz and 48kHz |
| Quantization bit rate | 8bits and 16bits |
You can adjust the volume by changing the following.
main.cpp
AudioPlayer.outputVolume(0.5); // Volume control (min:0.0 max:1.0)
The default setting of serial communication (baud rate etc.) in mbed is shown the following link.
Please refer to the link and change the settings of your PC terminal software.
The default value of baud rate in mbed is 9600, and this application uses baud rate 9600.
https://developer.mbed.org/teams/Renesas/wiki/GR-PEACH-Getting-Started#install-the-usb-serial-communication
History
Changed to be usable with EasyPlayback
2018-07-24, by dkato [Tue, 24 Jul 2018 08:46:48 +0000] rev 16
Changed to be usable with EasyPlayback
upports mbed-os 5.9.1 and later
2018-07-24, by dkato [Tue, 24 Jul 2018 05:45:07 +0000] rev 15
upports mbed-os 5.9.1 and later
Change volume
2017-07-06, by dkato [Thu, 06 Jul 2017 05:10:49 +0000] rev 14
Change volume
Simplified sample
2017-07-06, by dkato [Thu, 06 Jul 2017 04:50:46 +0000] rev 13
Simplified sample
Update library
2017-03-24, by dkato [Fri, 24 Mar 2017 06:56:45 +0000] rev 12
Update library
Supports mbed os 5.4.
2017-03-24, by dkato [Fri, 24 Mar 2017 04:30:17 +0000] rev 11
Supports mbed os 5.4.
Change volume setting.
2016-12-20, by dkato [Tue, 20 Dec 2016 07:28:04 +0000] rev 10
Change volume setting.
Changed to sample to drive the speaker with PWM.
2016-12-20, by dkato [Tue, 20 Dec 2016 05:41:42 +0000] rev 9
Changed to sample to drive the speaker with PWM.
Supports IAR.
2016-04-18, by dkato [Mon, 18 Apr 2016 09:17:50 +0000] rev 8
Supports IAR.
High-Resolution Audio
2015-08-18, by dkato [Tue, 18 Aug 2015 04:19:19 +0000] rev 7
High-Resolution Audio