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 10:00:46 2015 +0000
Revision:
5:983467c1466b
Parent:
4:01651a6c3f9a
Child:
7:4b6799c255ea
bug fixed

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 5:983467c1466b 49 #if (USB_HOST_CH == 1) //Audio Shield USB1
dkato 5:983467c1466b 50 //Audio Shield USB1 enable
dkato 5:983467c1466b 51 usb1en = 1; //Outputs high level
dkato 5:983467c1466b 52 Thread::wait(5);
dkato 5:983467c1466b 53 usb1en = 0; //Outputs low level
dkato 5:983467c1466b 54 #endif
dkato 5:983467c1466b 55
dkato 0:a24aaf3a41b1 56 audio.power(0x02); // mic off
dkato 0:a24aaf3a41b1 57 audio.inputVolume(0.7, 0.7);
dkato 0:a24aaf3a41b1 58
dkato 0:a24aaf3a41b1 59 USBHostMSD msd("usb");
dkato 0:a24aaf3a41b1 60
dkato 0:a24aaf3a41b1 61 while(1) {
dkato 0:a24aaf3a41b1 62 // try to connect a MSD device
dkato 0:a24aaf3a41b1 63 while(!msd.connect()) {
dkato 0:a24aaf3a41b1 64 Thread::wait(500);
dkato 0:a24aaf3a41b1 65 }
dkato 0:a24aaf3a41b1 66
dkato 0:a24aaf3a41b1 67 // in a loop, append a file
dkato 0:a24aaf3a41b1 68 // if the device is disconnected, we try to connect it again
dkato 0:a24aaf3a41b1 69 while(1) {
dkato 0:a24aaf3a41b1 70 // if device disconnected, try to connect again
dkato 0:a24aaf3a41b1 71 if (!msd.connected()) {
dkato 0:a24aaf3a41b1 72 break;
dkato 0:a24aaf3a41b1 73 }
dkato 0:a24aaf3a41b1 74 if (fp == NULL) {
dkato 0:a24aaf3a41b1 75 // file search
dkato 0:a24aaf3a41b1 76 if (d == NULL) {
dkato 0:a24aaf3a41b1 77 d = opendir(FLD_PATH);
dkato 0:a24aaf3a41b1 78 }
dkato 0:a24aaf3a41b1 79 struct dirent * p;
dkato 0:a24aaf3a41b1 80 while ((p = readdir(d)) != NULL) {
dkato 0:a24aaf3a41b1 81 size_t len = strlen(p->d_name);
dkato 4:01651a6c3f9a 82 if ((len > 4) && (len < FILE_NAME_LEN)
dkato 4:01651a6c3f9a 83 && (memcmp(&p->d_name[len - 4], ".wav", 4) == 0)) {
dkato 0:a24aaf3a41b1 84 strcpy(file_path, FLD_PATH);
dkato 0:a24aaf3a41b1 85 strcat(file_path, p->d_name);
dkato 0:a24aaf3a41b1 86 fp = fopen(file_path, "r");
dkato 5:983467c1466b 87 if (wav_file.AnalyzeHeder(title_buf, artist_buf, album_buf,
dkato 4:01651a6c3f9a 88 TEXT_SIZE, fp) == false) {
dkato 0:a24aaf3a41b1 89 fclose(fp);
dkato 0:a24aaf3a41b1 90 fp = NULL;
dkato 5:983467c1466b 91 } else if ((wav_file.GetChannel() != 2)
dkato 5:983467c1466b 92 || (wav_file.GetBlockSize() != 16)
dkato 5:983467c1466b 93 || (wav_file.GetSamplingRate() != 44100)) {
dkato 5:983467c1466b 94 fclose(fp);
dkato 5:983467c1466b 95 fp = NULL;
dkato 0:a24aaf3a41b1 96 } else {
dkato 0:a24aaf3a41b1 97 printf("File :%s\n", p->d_name);
dkato 0:a24aaf3a41b1 98 printf("Title :%s\n", title_buf);
dkato 0:a24aaf3a41b1 99 printf("Artist:%s\n", artist_buf);
dkato 0:a24aaf3a41b1 100 printf("Album :%s\n", album_buf);
dkato 0:a24aaf3a41b1 101 printf("\n");
dkato 0:a24aaf3a41b1 102 break;
dkato 0:a24aaf3a41b1 103 }
dkato 0:a24aaf3a41b1 104 }
dkato 0:a24aaf3a41b1 105 }
dkato 0:a24aaf3a41b1 106 if (p == NULL) {
dkato 0:a24aaf3a41b1 107 closedir(d);
dkato 0:a24aaf3a41b1 108 d = NULL;
dkato 0:a24aaf3a41b1 109 }
dkato 0:a24aaf3a41b1 110 } else {
dkato 0:a24aaf3a41b1 111 // file read
dkato 4:01651a6c3f9a 112 uint8_t * p_buf = audio_write_buff[buff_index];
dkato 0:a24aaf3a41b1 113
dkato 5:983467c1466b 114 audio_data_size = wav_file.GetNextData(p_buf, AUDIO_WRITE_BUFF_SIZE);
dkato 4:01651a6c3f9a 115 if (audio_data_size > 0) {
dkato 4:01651a6c3f9a 116 audio.write(p_buf, audio_data_size, &audio_write_async_ctl);
dkato 4:01651a6c3f9a 117 buff_index++;
dkato 4:01651a6c3f9a 118 if (buff_index >= AUDIO_WRITE_BUFF_NUM) {
dkato 4:01651a6c3f9a 119 buff_index = 0;
dkato 0:a24aaf3a41b1 120 }
dkato 0:a24aaf3a41b1 121 }
dkato 0:a24aaf3a41b1 122
dkato 0:a24aaf3a41b1 123 // file close
dkato 4:01651a6c3f9a 124 if ((audio_data_size < AUDIO_WRITE_BUFF_SIZE) || (button == 0)) {
dkato 0:a24aaf3a41b1 125 fclose(fp);
dkato 0:a24aaf3a41b1 126 fp = NULL;
dkato 0:a24aaf3a41b1 127 Thread::wait(500);
dkato 0:a24aaf3a41b1 128 }
dkato 0:a24aaf3a41b1 129 }
dkato 0:a24aaf3a41b1 130 }
dkato 0:a24aaf3a41b1 131
dkato 0:a24aaf3a41b1 132 // close check
dkato 0:a24aaf3a41b1 133 if (fp != NULL) {
dkato 0:a24aaf3a41b1 134 fclose(fp);
dkato 0:a24aaf3a41b1 135 fp = NULL;
dkato 0:a24aaf3a41b1 136 }
dkato 0:a24aaf3a41b1 137 if (d != NULL) {
dkato 0:a24aaf3a41b1 138 closedir(d);
dkato 0:a24aaf3a41b1 139 d = NULL;
dkato 0:a24aaf3a41b1 140 }
dkato 0:a24aaf3a41b1 141 }
dkato 0:a24aaf3a41b1 142 }