seiichi horie / Mbed 2 deprecated synthesizer_f746

Synthesizer based on the Unzen / Nucleo F746ZG

Dependencies:   amakusa mbed-dsp mbed shimabara ukifune unzen_nucleo_f746

Fork of skeleton_unzen_nucleo_f746 by seiichi horie

雲仙フレームワークのテストとして作っているプロジェクトです。中身はどんどん変っていきます。 説明はDSP空挺団の「シンセサイザー」カテゴリーを参照してください。初回は「ドッグフードを食べる」です。

main.cpp@0:a837eeab3ca6, 2016-06-19 (annotated)

Committer:
shorie
Date:
Sun Jun 19 05:47:06 2016 +0000
Revision:
0:a837eeab3ca6
Child:
1:98ddcbbe10ba
Sample program of the nucleo_f746

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"
shorie 0:a837eeab3ca6 4
shorie 0:a837eeab3ca6 5 #define CODEC_I2C_ADDR 0x38
shorie 0:a837eeab3ca6 6
shorie 0:a837eeab3ca6 7 DigitalOut myled1(LED1);
shorie 0:a837eeab3ca6 8
shorie 0:a837eeab3ca6 9
shorie 0:a837eeab3ca6 10 // customer signal processing initialization call back.
shorie 0:a837eeab3ca6 11 void init_callback(
shorie 0:a837eeab3ca6 12 unsigned int block_size // block size [sample]
shorie 0:a837eeab3ca6 13 )
shorie 0:a837eeab3ca6 14 {
shorie 0:a837eeab3ca6 15 // place initialization code here
shorie 0:a837eeab3ca6 16 }
shorie 0:a837eeab3ca6 17
shorie 0:a837eeab3ca6 18
shorie 0:a837eeab3ca6 19 // customer signal processing call back.
shorie 0:a837eeab3ca6 20 void process_callback(
shorie 0:a837eeab3ca6 21 float rx_left_buffer[], // array of the left input samples
shorie 0:a837eeab3ca6 22 float rx_right_buffer[], // array of the right input samples
shorie 0:a837eeab3ca6 23 float tx_left_buffer[], // place to write the left output samples
shorie 0:a837eeab3ca6 24 float tx_right_buffer[], // place to write the left output samples
shorie 0:a837eeab3ca6 25 unsigned int block_size // block size [sample]
shorie 0:a837eeab3ca6 26 )
shorie 0:a837eeab3ca6 27 {
shorie 0:a837eeab3ca6 28 // Sample processing
shorie 0:a837eeab3ca6 29 for ( int i=0; i<block_size; i++) // for all sample
shorie 0:a837eeab3ca6 30 {
shorie 0:a837eeab3ca6 31 tx_left_buffer[i] = rx_left_buffer[i]; // copy from input to output
shorie 0:a837eeab3ca6 32 tx_right_buffer[i] = rx_right_buffer[i];
shorie 0:a837eeab3ca6 33
shorie 0:a837eeab3ca6 34 }
shorie 0:a837eeab3ca6 35 }
shorie 0:a837eeab3ca6 36
shorie 0:a837eeab3ca6 37
shorie 0:a837eeab3ca6 38
shorie 0:a837eeab3ca6 39 int main()
shorie 0:a837eeab3ca6 40 {
shorie 0:a837eeab3ca6 41 // I2C is essential to talk with ADAU1361
shorie 0:a837eeab3ca6 42 I2C i2c(D14, D15);
shorie 0:a837eeab3ca6 43
shorie 0:a837eeab3ca6 44 // create an audio codec contoler
shorie 0:a837eeab3ca6 45 shimabara::UMB_ADAU1361A codec(shimabara::Fs_32, i2c, CODEC_I2C_ADDR ); // Default Fs is 48kHz
shorie 0:a837eeab3ca6 46 // shimabara::UMB_ADAU1361A codec(shimabara::Fs_441, i2c, CODEC_I2C_ADDR );
shorie 0:a837eeab3ca6 47 // shimabara::UMB_ADAU1361A codec(shimabara::Fs_48, i2c, CODEC_I2C_ADDR );
shorie 0:a837eeab3ca6 48 // shimabara::UMB_ADAU1361A codec(shimabara::Fs_96, i2c, CODEC_I2C_ADDR );
shorie 0:a837eeab3ca6 49
shorie 0:a837eeab3ca6 50 // create an audio framework by singlton pattern
shorie 0:a837eeab3ca6 51 unzen::Framework audio;
shorie 0:a837eeab3ca6 52
shorie 0:a837eeab3ca6 53 // Set I3C clock to 100kHz
shorie 0:a837eeab3ca6 54 i2c.frequency( 100000 );
shorie 0:a837eeab3ca6 55
shorie 0:a837eeab3ca6 56
shorie 0:a837eeab3ca6 57 // Configure the optional block size of signal processing. By default, it is 1[Sample]
shorie 0:a837eeab3ca6 58 // audio.set_block_size(16);
shorie 0:a837eeab3ca6 59
shorie 0:a837eeab3ca6 60
shorie 0:a837eeab3ca6 61 // Start the ADAU1361. Audio codec starts to generate the I2C signals
shorie 0:a837eeab3ca6 62 codec.start();
shorie 0:a837eeab3ca6 63
shorie 0:a837eeab3ca6 64 // Start the audio framework on ARM processor.
shorie 0:a837eeab3ca6 65 audio.start( init_callback, process_callback); // path the initializaiton and process call back to framework
shorie 0:a837eeab3ca6 66
shorie 0:a837eeab3ca6 67
shorie 0:a837eeab3ca6 68 // periodically changing gain for test
shorie 0:a837eeab3ca6 69 while(1)
shorie 0:a837eeab3ca6 70 {
shorie 0:a837eeab3ca6 71 for ( int i=-15; i<4; i++ )
shorie 0:a837eeab3ca6 72 {
shorie 0:a837eeab3ca6 73 codec.set_hp_output_gain( i, i );
shorie 0:a837eeab3ca6 74 codec.set_line_output_gain( i, i );
shorie 0:a837eeab3ca6 75 myled1 = 1;
shorie 0:a837eeab3ca6 76 wait(0.2);
shorie 0:a837eeab3ca6 77 myled1 = 0;
shorie 0:a837eeab3ca6 78 wait(0.2);
shorie 0:a837eeab3ca6 79 }
shorie 0:a837eeab3ca6 80 }
shorie 0:a837eeab3ca6 81 }