This sample will play a ".wav" file of the USB root folder. Only RIFF format.

Fork of GR-PEACH_Audio_WAV by Daiki Kato

Audio sample for GR-PEACH or GR-LYCHEE. This sample will play a ".wav" file in the root of USB memory or SD card. If the USER_BUTTON0 is pressed, the next song is played.

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

Please refer to following link about Audio/Camera Shield.
https://developer.mbed.org/teams/Renesas/wiki/Audio_Camera-shield

For GR-PEACH:

FormatWav file (RIFF format) ".wav"
Channel2ch
Frequencies32kHz, 44.1kHz, 48kHz, 88.2kHz and 96kHz
Quantization bit rate16bits, 24bits and 32bits


For GR-LYCHEE:

FormatWav file (RIFF format) ".wav"
Channel2ch
Frequencies32kHz, 44.1kHz and 48kHz
Quantization bit rate16bits



  • Use USB0 of PEACH:
    /media/uploads/dkato/audio_wav_usb0.png

    If you use the USB0 as USB Host, please close GR-PEACH's JP3.
    /media/uploads/RyoheiHagimoto/usb.jpg

    Please select USB0 connector by the following configuration.

mbed_app.json

{
    "config": {
        "usb-host-ch":{
            "help": "(for GR-PEACH) 0:ch0 1:ch1",
            "value": "0"
        },
        "audio-camera-shield":{
            "help": "(for GR-PEACH) 0:not use 1:use",
            "value": "0"
        }
    }
}



  • Use USB1 of GR-PEACH:
    /media/uploads/dkato/audio_wav_usb1.png

    If you use the USB1 as USB Host, please close Audio/Camera Shield's JP1. /media/uploads/dkato/audiocamerashield_jp1.jpg

    Please select Audio/Camera Shield and USB1 connector by the following configuration.

mbed_app.json

{
    "config": {
        "usb-host-ch":{
            "help": "(for GR-PEACH) 0:ch0 1:ch1",
            "value": "1"
        },
        "audio-camera-shield":{
            "help": "(for GR-PEACH) 0:not use 1:use",
            "value": "1"
        }
    }
}
Committer:
dkato
Date:
Wed Jun 24 09:05:12 2015 +0000
Revision:
4:01651a6c3f9a
Parent:
1:967144cffd53
Child:
5:983467c1466b
improving readability

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 0:a24aaf3a41b1 1 #include "mbed.h"
dkato 0:a24aaf3a41b1 2 #include "TLV320_RBSP.h"
dkato 0:a24aaf3a41b1 3 #include "USBHostMSD.h"
dkato 4:01651a6c3f9a 4 #include "dec_wav.h"
dkato 4:01651a6c3f9a 5
dkato 0:a24aaf3a41b1 6 #if defined(TARGET_RZ_A1H)
dkato 0:a24aaf3a41b1 7 #include "usb_host_setting.h"
dkato 0:a24aaf3a41b1 8 #else
dkato 0:a24aaf3a41b1 9 #define USB_HOST_CH 0
dkato 0:a24aaf3a41b1 10 #endif
dkato 0:a24aaf3a41b1 11
dkato 0:a24aaf3a41b1 12 #if (USB_HOST_CH == 1) //Audio Shield USB1
dkato 0:a24aaf3a41b1 13 DigitalOut usb1en(P3_8);
dkato 0:a24aaf3a41b1 14 #endif
dkato 0:a24aaf3a41b1 15 DigitalIn button(USER_BUTTON0);
dkato 0:a24aaf3a41b1 16
dkato 4:01651a6c3f9a 17 #define AUDIO_WRITE_BUFF_SIZE (4096)
dkato 4:01651a6c3f9a 18 #define AUDIO_WRITE_BUFF_NUM (9)
dkato 0:a24aaf3a41b1 19 #define FILE_NAME_LEN (64)
dkato 4:01651a6c3f9a 20 #define TEXT_SIZE (64 + 1) //null-terminated
dkato 1:967144cffd53 21 #define FLD_PATH "/usb/"
dkato 0:a24aaf3a41b1 22
dkato 4:01651a6c3f9a 23 //4 bytes aligned! No cache memory
dkato 4:01651a6c3f9a 24 static uint8_t audio_write_buff[AUDIO_WRITE_BUFF_NUM][AUDIO_WRITE_BUFF_SIZE]
dkato 4:01651a6c3f9a 25 __attribute((section("NC_BSS"),aligned(4)));
dkato 4:01651a6c3f9a 26 //Tag buffer
dkato 4:01651a6c3f9a 27 static uint8_t title_buf[TEXT_SIZE];
dkato 4:01651a6c3f9a 28 static uint8_t artist_buf[TEXT_SIZE];
dkato 4:01651a6c3f9a 29 static uint8_t album_buf[TEXT_SIZE];
dkato 0:a24aaf3a41b1 30
dkato 4:01651a6c3f9a 31 TLV320_RBSP audio(P3_13, P10_13, I2C_SDA, I2C_SCL, P4_4, P4_5, P4_7, P4_6,
dkato 4:01651a6c3f9a 32 0x80, (AUDIO_WRITE_BUFF_NUM - 1), 0);
dkato 0:a24aaf3a41b1 33
dkato 4:01651a6c3f9a 34 static void callback_audio_write_end(void * p_data, int32_t result, void * p_app_data) {
dkato 0:a24aaf3a41b1 35 if (result < 0) {
dkato 4:01651a6c3f9a 36 printf("audio write callback error %d\n", result);
dkato 0:a24aaf3a41b1 37 }
dkato 0:a24aaf3a41b1 38 }
dkato 0:a24aaf3a41b1 39
dkato 4:01651a6c3f9a 40 int main() {
dkato 4:01651a6c3f9a 41 rbsp_data_conf_t audio_write_async_ctl = {&callback_audio_write_end, NULL};
dkato 0:a24aaf3a41b1 42 FILE * fp = NULL;
dkato 0:a24aaf3a41b1 43 DIR * d = NULL;
dkato 0:a24aaf3a41b1 44 char file_path[sizeof(FLD_PATH) + FILE_NAME_LEN];
dkato 4:01651a6c3f9a 45 int buff_index = 0;
dkato 1:967144cffd53 46 size_t audio_data_size;
dkato 4:01651a6c3f9a 47 dec_wav wav_file;
dkato 0:a24aaf3a41b1 48
dkato 0:a24aaf3a41b1 49 audio.power(0x02); // mic off
dkato 0:a24aaf3a41b1 50 audio.inputVolume(0.7, 0.7);
dkato 0:a24aaf3a41b1 51
dkato 0:a24aaf3a41b1 52 USBHostMSD msd("usb");
dkato 0:a24aaf3a41b1 53
dkato 0:a24aaf3a41b1 54 while(1) {
dkato 0:a24aaf3a41b1 55 // try to connect a MSD device
dkato 0:a24aaf3a41b1 56 while(!msd.connect()) {
dkato 0:a24aaf3a41b1 57 Thread::wait(500);
dkato 0:a24aaf3a41b1 58 }
dkato 0:a24aaf3a41b1 59
dkato 0:a24aaf3a41b1 60 // in a loop, append a file
dkato 0:a24aaf3a41b1 61 // if the device is disconnected, we try to connect it again
dkato 0:a24aaf3a41b1 62 while(1) {
dkato 0:a24aaf3a41b1 63 // if device disconnected, try to connect again
dkato 0:a24aaf3a41b1 64 if (!msd.connected()) {
dkato 0:a24aaf3a41b1 65 break;
dkato 0:a24aaf3a41b1 66 }
dkato 0:a24aaf3a41b1 67 if (fp == NULL) {
dkato 0:a24aaf3a41b1 68 // file search
dkato 0:a24aaf3a41b1 69 if (d == NULL) {
dkato 0:a24aaf3a41b1 70 d = opendir(FLD_PATH);
dkato 0:a24aaf3a41b1 71 }
dkato 0:a24aaf3a41b1 72 struct dirent * p;
dkato 0:a24aaf3a41b1 73 while ((p = readdir(d)) != NULL) {
dkato 0:a24aaf3a41b1 74 size_t len = strlen(p->d_name);
dkato 4:01651a6c3f9a 75 if ((len > 4) && (len < FILE_NAME_LEN)
dkato 4:01651a6c3f9a 76 && (memcmp(&p->d_name[len - 4], ".wav", 4) == 0)) {
dkato 0:a24aaf3a41b1 77 strcpy(file_path, FLD_PATH);
dkato 0:a24aaf3a41b1 78 strcat(file_path, p->d_name);
dkato 0:a24aaf3a41b1 79 fp = fopen(file_path, "r");
dkato 4:01651a6c3f9a 80 if (wav_file.analyze_heder(title_buf, artist_buf, album_buf,
dkato 4:01651a6c3f9a 81 TEXT_SIZE, fp) == false) {
dkato 0:a24aaf3a41b1 82 fclose(fp);
dkato 0:a24aaf3a41b1 83 fp = NULL;
dkato 0:a24aaf3a41b1 84 } else {
dkato 0:a24aaf3a41b1 85 printf("File :%s\n", p->d_name);
dkato 0:a24aaf3a41b1 86 printf("Title :%s\n", title_buf);
dkato 0:a24aaf3a41b1 87 printf("Artist:%s\n", artist_buf);
dkato 0:a24aaf3a41b1 88 printf("Album :%s\n", album_buf);
dkato 0:a24aaf3a41b1 89 printf("\n");
dkato 0:a24aaf3a41b1 90 break;
dkato 0:a24aaf3a41b1 91 }
dkato 0:a24aaf3a41b1 92 }
dkato 0:a24aaf3a41b1 93 }
dkato 0:a24aaf3a41b1 94 if (p == NULL) {
dkato 0:a24aaf3a41b1 95 closedir(d);
dkato 0:a24aaf3a41b1 96 d = NULL;
dkato 0:a24aaf3a41b1 97 }
dkato 0:a24aaf3a41b1 98 } else {
dkato 0:a24aaf3a41b1 99 // file read
dkato 4:01651a6c3f9a 100 uint8_t * p_buf = audio_write_buff[buff_index];
dkato 0:a24aaf3a41b1 101
dkato 4:01651a6c3f9a 102 audio_data_size = wav_file.get_next_data(p_buf, AUDIO_WRITE_BUFF_SIZE);
dkato 4:01651a6c3f9a 103 if (audio_data_size > 0) {
dkato 4:01651a6c3f9a 104 audio.write(p_buf, audio_data_size, &audio_write_async_ctl);
dkato 4:01651a6c3f9a 105 buff_index++;
dkato 4:01651a6c3f9a 106 if (buff_index >= AUDIO_WRITE_BUFF_NUM) {
dkato 4:01651a6c3f9a 107 buff_index = 0;
dkato 0:a24aaf3a41b1 108 }
dkato 0:a24aaf3a41b1 109 }
dkato 0:a24aaf3a41b1 110
dkato 0:a24aaf3a41b1 111 // file close
dkato 4:01651a6c3f9a 112 if ((audio_data_size < AUDIO_WRITE_BUFF_SIZE) || (button == 0)) {
dkato 0:a24aaf3a41b1 113 fclose(fp);
dkato 0:a24aaf3a41b1 114 fp = NULL;
dkato 0:a24aaf3a41b1 115 Thread::wait(500);
dkato 0:a24aaf3a41b1 116 }
dkato 0:a24aaf3a41b1 117 }
dkato 0:a24aaf3a41b1 118 }
dkato 0:a24aaf3a41b1 119
dkato 0:a24aaf3a41b1 120 // close check
dkato 0:a24aaf3a41b1 121 if (fp != NULL) {
dkato 0:a24aaf3a41b1 122 fclose(fp);
dkato 0:a24aaf3a41b1 123 fp = NULL;
dkato 0:a24aaf3a41b1 124 }
dkato 0:a24aaf3a41b1 125 if (d != NULL) {
dkato 0:a24aaf3a41b1 126 closedir(d);
dkato 0:a24aaf3a41b1 127 d = NULL;
dkato 0:a24aaf3a41b1 128 }
dkato 0:a24aaf3a41b1 129 }
dkato 0:a24aaf3a41b1 130 }