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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
Diff: main.cpp
- Revision:
- 7:4b6799c255ea
- Parent:
- 5:983467c1466b
- Child:
- 8:7121197d098e
diff -r ad0b3ce4284b -r 4b6799c255ea main.cpp
--- a/main.cpp Fri Jun 26 07:35:16 2015 +0000
+++ b/main.cpp Tue Aug 18 04:19:19 2015 +0000
@@ -28,7 +28,7 @@
static uint8_t artist_buf[TEXT_SIZE];
static uint8_t album_buf[TEXT_SIZE];
-TLV320_RBSP audio(P3_13, P10_13, I2C_SDA, I2C_SCL, P4_4, P4_5, P4_7, P4_6,
+TLV320_RBSP audio(P10_13, I2C_SDA, I2C_SCL, P4_4, P4_5, P4_7, P4_6,
0x80, (AUDIO_WRITE_BUFF_NUM - 1), 0);
static void callback_audio_write_end(void * p_data, int32_t result, void * p_app_data) {
@@ -89,15 +89,21 @@
fclose(fp);
fp = NULL;
} else if ((wav_file.GetChannel() != 2)
- || (wav_file.GetBlockSize() != 16)
- || (wav_file.GetSamplingRate() != 44100)) {
+ || (audio.format(wav_file.GetBlockSize()) == false)
+ || (audio.frequency(wav_file.GetSamplingRate()) == false)) {
+ printf("Error File :%s\n", p->d_name);
+ printf("Audio Info :%dch, %dbit, %dHz\n", wav_file.GetChannel(),
+ wav_file.GetBlockSize(), wav_file.GetSamplingRate());
+ printf("\n");
fclose(fp);
fp = NULL;
} else {
- printf("File :%s\n", p->d_name);
- printf("Title :%s\n", title_buf);
- printf("Artist:%s\n", artist_buf);
- printf("Album :%s\n", album_buf);
+ printf("File :%s\n", p->d_name);
+ printf("Audio Info :%dch, %dbit, %dHz\n", wav_file.GetChannel(),
+ wav_file.GetBlockSize(), wav_file.GetSamplingRate());
+ printf("Title :%s\n", title_buf);
+ printf("Artist :%s\n", artist_buf);
+ printf("Album :%s\n", album_buf);
printf("\n");
break;
}