Synthesizer based on the Unzen / Nucleo F746ZG
Dependencies: amakusa mbed-dsp mbed shimabara ukifune unzen_nucleo_f746
Fork of skeleton_unzen_nucleo_f746 by
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。
Diff: main.cpp
- Revision:
- 0:a837eeab3ca6
- Child:
- 1:98ddcbbe10ba
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sun Jun 19 05:47:06 2016 +0000 @@ -0,0 +1,81 @@ +#include "unzen.h" // audio framework include file +#include "umb_adau1361a.h" // audio codec contoler include file +#include "mbed.h" + +#define CODEC_I2C_ADDR 0x38 + +DigitalOut myled1(LED1); + + + // customer signal processing initialization call back. +void init_callback( + unsigned int block_size // block size [sample] + ) +{ + // place initialization code here +} + + + // customer signal processing call back. +void process_callback( + float rx_left_buffer[], // array of the left input samples + float rx_right_buffer[], // array of the right input samples + float tx_left_buffer[], // place to write the left output samples + float tx_right_buffer[], // place to write the left output samples + unsigned int block_size // block size [sample] + ) +{ + // Sample processing + for ( int i=0; i<block_size; i++) // for all sample + { + tx_left_buffer[i] = rx_left_buffer[i]; // copy from input to output + tx_right_buffer[i] = rx_right_buffer[i]; + + } +} + + + +int main() +{ + // I2C is essential to talk with ADAU1361 + I2C i2c(D14, D15); + + // create an audio codec contoler + shimabara::UMB_ADAU1361A codec(shimabara::Fs_32, i2c, CODEC_I2C_ADDR ); // Default Fs is 48kHz +// shimabara::UMB_ADAU1361A codec(shimabara::Fs_441, i2c, CODEC_I2C_ADDR ); +// shimabara::UMB_ADAU1361A codec(shimabara::Fs_48, i2c, CODEC_I2C_ADDR ); +// shimabara::UMB_ADAU1361A codec(shimabara::Fs_96, i2c, CODEC_I2C_ADDR ); + + // create an audio framework by singlton pattern + unzen::Framework audio; + + // Set I3C clock to 100kHz + i2c.frequency( 100000 ); + + + // Configure the optional block size of signal processing. By default, it is 1[Sample] +// audio.set_block_size(16); + + + // Start the ADAU1361. Audio codec starts to generate the I2C signals + codec.start(); + + // Start the audio framework on ARM processor. + audio.start( init_callback, process_callback); // path the initializaiton and process call back to framework + + + // periodically changing gain for test + while(1) + { + for ( int i=-15; i<4; i++ ) + { + codec.set_hp_output_gain( i, i ); + codec.set_line_output_gain( i, i ); + myled1 = 1; + wait(0.2); + myled1 = 0; + wait(0.2); + } + } +} \ No newline at end of file