TAKESHI OGAWA / Mbed 2 deprecated unzen_delay_sample_nucleo_f746

24bit 48kHz Audio Delay

Dependencies:   mbed-dsp mbed shimabara unzen_nucleo_f746

Fork of unzen_sample_nucleo_f746 by seiichi horie

雲仙フレームワークを使ったオーディオディレイのsampleです。

main.cpp@1:5b735bc30c17, 2016-12-12 (annotated)

Committer:
GSMCustomEffects
Date:
Mon Dec 12 09:26:41 2016 +0000
Revision:
1:5b735bc30c17
Parent:
0:a837eeab3ca6
Child:
3:d9fd88ea0ff5
add

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shorie 0:a837eeab3ca6 1 #include "unzen.h" // audio framework include file
shorie 0:a837eeab3ca6 2 #include "umb_adau1361a.h" // audio codec contoler include file
shorie 0:a837eeab3ca6 3 #include "mbed.h"
GSMCustomEffects 1:5b735bc30c17 4 #include "arm_math.h"
shorie 0:a837eeab3ca6 5 #define CODEC_I2C_ADDR 0x38
shorie 0:a837eeab3ca6 6
shorie 0:a837eeab3ca6 7 DigitalOut myled1(LED1);
GSMCustomEffects 1:5b735bc30c17 8 DigitalIn User_b1(PC_13);
GSMCustomEffects 1:5b735bc30c17 9 Serial uart(SERIAL_TX,SERIAL_RX);
GSMCustomEffects 1:5b735bc30c17 10 float32_t delay_buf[1];
GSMCustomEffects 1:5b735bc30c17 11 float32_t delay_buf1[1];
GSMCustomEffects 1:5b735bc30c17 12 float32_t delay_buf2[1];
GSMCustomEffects 1:5b735bc30c17 13 int flag = 1;
GSMCustomEffects 1:5b735bc30c17 14 char uart_read_value = 0;
shorie 0:a837eeab3ca6 15 // customer signal processing initialization call back.
shorie 0:a837eeab3ca6 16 void init_callback(
shorie 0:a837eeab3ca6 17 unsigned int block_size // block size [sample]
shorie 0:a837eeab3ca6 18 )
shorie 0:a837eeab3ca6 19 {
shorie 0:a837eeab3ca6 20 // place initialization code here
shorie 0:a837eeab3ca6 21 }
shorie 0:a837eeab3ca6 22
shorie 0:a837eeab3ca6 23
shorie 0:a837eeab3ca6 24 // customer signal processing call back.
shorie 0:a837eeab3ca6 25 void process_callback(
shorie 0:a837eeab3ca6 26 float rx_left_buffer[], // array of the left input samples
shorie 0:a837eeab3ca6 27 float rx_right_buffer[], // array of the right input samples
shorie 0:a837eeab3ca6 28 float tx_left_buffer[], // place to write the left output samples
shorie 0:a837eeab3ca6 29 float tx_right_buffer[], // place to write the left output samples
shorie 0:a837eeab3ca6 30 unsigned int block_size // block size [sample]
shorie 0:a837eeab3ca6 31 )
shorie 0:a837eeab3ca6 32 {
GSMCustomEffects 1:5b735bc30c17 33
GSMCustomEffects 1:5b735bc30c17 34 if(flag == 1){
shorie 0:a837eeab3ca6 35 // Sample processing
GSMCustomEffects 1:5b735bc30c17 36 for ( int i=0; i<block_size; i++) // for all sample
GSMCustomEffects 1:5b735bc30c17 37 {
GSMCustomEffects 1:5b735bc30c17 38 tx_left_buffer[i] = rx_left_buffer[i]; // copy from input to output
GSMCustomEffects 1:5b735bc30c17 39 tx_right_buffer[i] = rx_right_buffer[i];
GSMCustomEffects 1:5b735bc30c17 40
GSMCustomEffects 1:5b735bc30c17 41 }
GSMCustomEffects 1:5b735bc30c17 42 }
GSMCustomEffects 1:5b735bc30c17 43 else if(flag == 0){
GSMCustomEffects 1:5b735bc30c17 44 for ( int i=0; i<block_size; i++) // for all sample
GSMCustomEffects 1:5b735bc30c17 45 {
GSMCustomEffects 1:5b735bc30c17 46 tx_left_buffer[i] = 0; // copy from input to output
GSMCustomEffects 1:5b735bc30c17 47 tx_right_buffer[i] = 0;
GSMCustomEffects 1:5b735bc30c17 48
GSMCustomEffects 1:5b735bc30c17 49 }
shorie 0:a837eeab3ca6 50 }
shorie 0:a837eeab3ca6 51 }
shorie 0:a837eeab3ca6 52
shorie 0:a837eeab3ca6 53
shorie 0:a837eeab3ca6 54
shorie 0:a837eeab3ca6 55 int main()
shorie 0:a837eeab3ca6 56 {
shorie 0:a837eeab3ca6 57 // I2C is essential to talk with ADAU1361
shorie 0:a837eeab3ca6 58 I2C i2c(D14, D15);
GSMCustomEffects 1:5b735bc30c17 59
GSMCustomEffects 1:5b735bc30c17 60
shorie 0:a837eeab3ca6 61 // create an audio codec contoler
GSMCustomEffects 1:5b735bc30c17 62 //shimabara::UMB_ADAU1361A codec(shimabara::Fs_32, i2c, CODEC_I2C_ADDR ); // Default Fs is 48kHz
GSMCustomEffects 1:5b735bc30c17 63 shimabara::UMB_ADAU1361A codec(shimabara::Fs_441, i2c, CODEC_I2C_ADDR );
shorie 0:a837eeab3ca6 64 // shimabara::UMB_ADAU1361A codec(shimabara::Fs_48, i2c, CODEC_I2C_ADDR );
shorie 0:a837eeab3ca6 65 // shimabara::UMB_ADAU1361A codec(shimabara::Fs_96, i2c, CODEC_I2C_ADDR );
shorie 0:a837eeab3ca6 66
shorie 0:a837eeab3ca6 67 // create an audio framework by singlton pattern
shorie 0:a837eeab3ca6 68 unzen::Framework audio;
shorie 0:a837eeab3ca6 69
shorie 0:a837eeab3ca6 70 // Set I3C clock to 100kHz
shorie 0:a837eeab3ca6 71 i2c.frequency( 100000 );
shorie 0:a837eeab3ca6 72
shorie 0:a837eeab3ca6 73
shorie 0:a837eeab3ca6 74 // Configure the optional block size of signal processing. By default, it is 1[Sample]
GSMCustomEffects 1:5b735bc30c17 75 audio.set_block_size(16);
shorie 0:a837eeab3ca6 76
shorie 0:a837eeab3ca6 77
shorie 0:a837eeab3ca6 78 // Start the ADAU1361. Audio codec starts to generate the I2C signals
shorie 0:a837eeab3ca6 79 codec.start();
shorie 0:a837eeab3ca6 80
shorie 0:a837eeab3ca6 81 // Start the audio framework on ARM processor.
shorie 0:a837eeab3ca6 82 audio.start( init_callback, process_callback); // path the initializaiton and process call back to framework
shorie 0:a837eeab3ca6 83
shorie 0:a837eeab3ca6 84
shorie 0:a837eeab3ca6 85 // periodically changing gain for test
shorie 0:a837eeab3ca6 86 while(1)
shorie 0:a837eeab3ca6 87 {
GSMCustomEffects 1:5b735bc30c17 88
GSMCustomEffects 1:5b735bc30c17 89 delay_buf[0] = 1.0;
GSMCustomEffects 1:5b735bc30c17 90 codec.set_hp_output_gain( 3, 3);
GSMCustomEffects 1:5b735bc30c17 91 codec.set_line_output_gain( 3, 3 );
GSMCustomEffects 1:5b735bc30c17 92 arm_add_f32( delay_buf, delay_buf1, delay_buf2, 1 );
GSMCustomEffects 1:5b735bc30c17 93 if(User_b1 == 1){
GSMCustomEffects 1:5b735bc30c17 94 if(flag == 1){flag = 0;}
GSMCustomEffects 1:5b735bc30c17 95 else if(flag == 0){flag = 1;}
GSMCustomEffects 1:5b735bc30c17 96 if(flag == 1){myled1 =1;uart.printf("Effect On \r\n");}
GSMCustomEffects 1:5b735bc30c17 97 else if(flag == 0){myled1 =0;uart.printf("Effect Off \r\n");}
GSMCustomEffects 1:5b735bc30c17 98 while(User_b1==1){}
GSMCustomEffects 1:5b735bc30c17 99 }
GSMCustomEffects 1:5b735bc30c17 100 if(uart.readable()== 1){uart_read_value = uart.getc();
GSMCustomEffects 1:5b735bc30c17 101 if(uart_read_value == 'e'){flag = 1;uart.printf("Effect On \r\n");}
GSMCustomEffects 1:5b735bc30c17 102 if(uart_read_value == 'd'){flag = 0;uart.printf("Effect Off \r\n");}
GSMCustomEffects 1:5b735bc30c17 103 }
shorie 0:a837eeab3ca6 104 }
shorie 0:a837eeab3ca6 105 }