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:
Mon Apr 18 09:17:50 2016 +0000
Revision:
8:7121197d098e
Parent:
7:4b6799c255ea
Child:
9:a1045daef81d
Supports IAR.

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 8:7121197d098e 24 #if defined(__ICCARM__)
dkato 8:7121197d098e 25 #pragma data_alignment=4
dkato 8:7121197d098e 26 static uint8_t audio_write_buff[AUDIO_WRITE_BUFF_NUM][AUDIO_WRITE_BUFF_SIZE]@ ".mirrorram";
dkato 8:7121197d098e 27 #else
dkato 4:01651a6c3f9a 28 static uint8_t audio_write_buff[AUDIO_WRITE_BUFF_NUM][AUDIO_WRITE_BUFF_SIZE]
dkato 4:01651a6c3f9a 29 __attribute((section("NC_BSS"),aligned(4)));
dkato 8:7121197d098e 30 #endif
dkato 4:01651a6c3f9a 31 //Tag buffer
dkato 4:01651a6c3f9a 32 static uint8_t title_buf[TEXT_SIZE];
dkato 4:01651a6c3f9a 33 static uint8_t artist_buf[TEXT_SIZE];
dkato 4:01651a6c3f9a 34 static uint8_t album_buf[TEXT_SIZE];
dkato 0:a24aaf3a41b1 35
dkato 7:4b6799c255ea 36 TLV320_RBSP audio(P10_13, I2C_SDA, I2C_SCL, P4_4, P4_5, P4_7, P4_6,
dkato 4:01651a6c3f9a 37 0x80, (AUDIO_WRITE_BUFF_NUM - 1), 0);
dkato 0:a24aaf3a41b1 38
dkato 4:01651a6c3f9a 39 static void callback_audio_write_end(void * p_data, int32_t result, void * p_app_data) {
dkato 0:a24aaf3a41b1 40 if (result < 0) {
dkato 4:01651a6c3f9a 41 printf("audio write callback error %d\n", result);
dkato 0:a24aaf3a41b1 42 }
dkato 0:a24aaf3a41b1 43 }
dkato 0:a24aaf3a41b1 44
dkato 4:01651a6c3f9a 45 int main() {
dkato 4:01651a6c3f9a 46 rbsp_data_conf_t audio_write_async_ctl = {&callback_audio_write_end, NULL};
dkato 0:a24aaf3a41b1 47 FILE * fp = NULL;
dkato 0:a24aaf3a41b1 48 DIR * d = NULL;
dkato 0:a24aaf3a41b1 49 char file_path[sizeof(FLD_PATH) + FILE_NAME_LEN];
dkato 4:01651a6c3f9a 50 int buff_index = 0;
dkato 1:967144cffd53 51 size_t audio_data_size;
dkato 4:01651a6c3f9a 52 dec_wav wav_file;
dkato 0:a24aaf3a41b1 53
dkato 5:983467c1466b 54 #if (USB_HOST_CH == 1) //Audio Shield USB1
dkato 5:983467c1466b 55 //Audio Shield USB1 enable
dkato 5:983467c1466b 56 usb1en = 1; //Outputs high level
dkato 5:983467c1466b 57 Thread::wait(5);
dkato 5:983467c1466b 58 usb1en = 0; //Outputs low level
dkato 5:983467c1466b 59 #endif
dkato 5:983467c1466b 60
dkato 0:a24aaf3a41b1 61 audio.power(0x02); // mic off
dkato 0:a24aaf3a41b1 62 audio.inputVolume(0.7, 0.7);
dkato 0:a24aaf3a41b1 63
dkato 0:a24aaf3a41b1 64 USBHostMSD msd("usb");
dkato 0:a24aaf3a41b1 65
dkato 0:a24aaf3a41b1 66 while(1) {
dkato 0:a24aaf3a41b1 67 // try to connect a MSD device
dkato 0:a24aaf3a41b1 68 while(!msd.connect()) {
dkato 0:a24aaf3a41b1 69 Thread::wait(500);
dkato 0:a24aaf3a41b1 70 }
dkato 0:a24aaf3a41b1 71
dkato 0:a24aaf3a41b1 72 // in a loop, append a file
dkato 0:a24aaf3a41b1 73 // if the device is disconnected, we try to connect it again
dkato 0:a24aaf3a41b1 74 while(1) {
dkato 0:a24aaf3a41b1 75 // if device disconnected, try to connect again
dkato 0:a24aaf3a41b1 76 if (!msd.connected()) {
dkato 0:a24aaf3a41b1 77 break;
dkato 0:a24aaf3a41b1 78 }
dkato 0:a24aaf3a41b1 79 if (fp == NULL) {
dkato 0:a24aaf3a41b1 80 // file search
dkato 0:a24aaf3a41b1 81 if (d == NULL) {
dkato 0:a24aaf3a41b1 82 d = opendir(FLD_PATH);
dkato 0:a24aaf3a41b1 83 }
dkato 0:a24aaf3a41b1 84 struct dirent * p;
dkato 0:a24aaf3a41b1 85 while ((p = readdir(d)) != NULL) {
dkato 0:a24aaf3a41b1 86 size_t len = strlen(p->d_name);
dkato 4:01651a6c3f9a 87 if ((len > 4) && (len < FILE_NAME_LEN)
dkato 4:01651a6c3f9a 88 && (memcmp(&p->d_name[len - 4], ".wav", 4) == 0)) {
dkato 0:a24aaf3a41b1 89 strcpy(file_path, FLD_PATH);
dkato 0:a24aaf3a41b1 90 strcat(file_path, p->d_name);
dkato 0:a24aaf3a41b1 91 fp = fopen(file_path, "r");
dkato 5:983467c1466b 92 if (wav_file.AnalyzeHeder(title_buf, artist_buf, album_buf,
dkato 4:01651a6c3f9a 93 TEXT_SIZE, fp) == false) {
dkato 0:a24aaf3a41b1 94 fclose(fp);
dkato 0:a24aaf3a41b1 95 fp = NULL;
dkato 5:983467c1466b 96 } else if ((wav_file.GetChannel() != 2)
dkato 7:4b6799c255ea 97 || (audio.format(wav_file.GetBlockSize()) == false)
dkato 7:4b6799c255ea 98 || (audio.frequency(wav_file.GetSamplingRate()) == false)) {
dkato 7:4b6799c255ea 99 printf("Error File :%s\n", p->d_name);
dkato 7:4b6799c255ea 100 printf("Audio Info :%dch, %dbit, %dHz\n", wav_file.GetChannel(),
dkato 7:4b6799c255ea 101 wav_file.GetBlockSize(), wav_file.GetSamplingRate());
dkato 7:4b6799c255ea 102 printf("\n");
dkato 5:983467c1466b 103 fclose(fp);
dkato 5:983467c1466b 104 fp = NULL;
dkato 0:a24aaf3a41b1 105 } else {
dkato 7:4b6799c255ea 106 printf("File :%s\n", p->d_name);
dkato 7:4b6799c255ea 107 printf("Audio Info :%dch, %dbit, %dHz\n", wav_file.GetChannel(),
dkato 7:4b6799c255ea 108 wav_file.GetBlockSize(), wav_file.GetSamplingRate());
dkato 7:4b6799c255ea 109 printf("Title :%s\n", title_buf);
dkato 7:4b6799c255ea 110 printf("Artist :%s\n", artist_buf);
dkato 7:4b6799c255ea 111 printf("Album :%s\n", album_buf);
dkato 0:a24aaf3a41b1 112 printf("\n");
dkato 0:a24aaf3a41b1 113 break;
dkato 0:a24aaf3a41b1 114 }
dkato 0:a24aaf3a41b1 115 }
dkato 0:a24aaf3a41b1 116 }
dkato 0:a24aaf3a41b1 117 if (p == NULL) {
dkato 0:a24aaf3a41b1 118 closedir(d);
dkato 0:a24aaf3a41b1 119 d = NULL;
dkato 0:a24aaf3a41b1 120 }
dkato 0:a24aaf3a41b1 121 } else {
dkato 0:a24aaf3a41b1 122 // file read
dkato 4:01651a6c3f9a 123 uint8_t * p_buf = audio_write_buff[buff_index];
dkato 0:a24aaf3a41b1 124
dkato 5:983467c1466b 125 audio_data_size = wav_file.GetNextData(p_buf, AUDIO_WRITE_BUFF_SIZE);
dkato 4:01651a6c3f9a 126 if (audio_data_size > 0) {
dkato 4:01651a6c3f9a 127 audio.write(p_buf, audio_data_size, &audio_write_async_ctl);
dkato 4:01651a6c3f9a 128 buff_index++;
dkato 4:01651a6c3f9a 129 if (buff_index >= AUDIO_WRITE_BUFF_NUM) {
dkato 4:01651a6c3f9a 130 buff_index = 0;
dkato 0:a24aaf3a41b1 131 }
dkato 0:a24aaf3a41b1 132 }
dkato 0:a24aaf3a41b1 133
dkato 0:a24aaf3a41b1 134 // file close
dkato 4:01651a6c3f9a 135 if ((audio_data_size < AUDIO_WRITE_BUFF_SIZE) || (button == 0)) {
dkato 0:a24aaf3a41b1 136 fclose(fp);
dkato 0:a24aaf3a41b1 137 fp = NULL;
dkato 0:a24aaf3a41b1 138 Thread::wait(500);
dkato 0:a24aaf3a41b1 139 }
dkato 0:a24aaf3a41b1 140 }
dkato 0:a24aaf3a41b1 141 }
dkato 0:a24aaf3a41b1 142
dkato 0:a24aaf3a41b1 143 // close check
dkato 0:a24aaf3a41b1 144 if (fp != NULL) {
dkato 0:a24aaf3a41b1 145 fclose(fp);
dkato 0:a24aaf3a41b1 146 fp = NULL;
dkato 0:a24aaf3a41b1 147 }
dkato 0:a24aaf3a41b1 148 if (d != NULL) {
dkato 0:a24aaf3a41b1 149 closedir(d);
dkato 0:a24aaf3a41b1 150 d = NULL;
dkato 0:a24aaf3a41b1 151 }
dkato 0:a24aaf3a41b1 152 }
dkato 0:a24aaf3a41b1 153 }