Daiki Kato
This is a sample that drives a speaker with PWM.
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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
Revision 14:f3eda9558df6, committed 2017-07-06
- Comitter:
- dkato
- Date:
- Thu Jul 06 05:10:49 2017 +0000
- Parent:
- 13:7e3063fc0e10
- Child:
- 15:570acc3d2b89
- Commit message:
- Change volume
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Thu Jul 06 04:50:46 2017 +0000
+++ b/main.cpp Thu Jul 06 05:10:49 2017 +0000
@@ -29,7 +29,7 @@
AudioPlayer.add_decoder<EasyDec_WavCnv2ch>(".WAV");
// volume control
- AudioPlayer.outputVolume(0.10f); // Volume control (min:0.0 max:1.0)
+ AudioPlayer.outputVolume(0.5); // Volume control (min:0.0 max:1.0)
// button setting
skip_btn.fall(&skip_btn_fall);