DISCO-F746NGのAudioOutから正弦波をスイープとして出力します。ダブルバッファリングを使って、リアルタイムにデータ生成をしています。 This program outputs sine sweep from AudioOut on DISCO-F746NG. The program uses double buffering when generates data signals.
Dependencies: BSP_DISCO_F746NG_patch_fixed LCD_DISCO_F746NG mbed
main.h@0:ece4ec581d2b, 2015-12-26 (annotated)
- Committer:
- nanase
- Date:
- Sat Dec 26 07:20:53 2015 +0000
- Revision:
- 0:ece4ec581d2b
First commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
nanase | 0:ece4ec581d2b | 1 | #include "mbed.h" |
nanase | 0:ece4ec581d2b | 2 | #include "stm32746g_discovery_audio.h" |
nanase | 0:ece4ec581d2b | 3 | #include "LCD_DISCO_F746NG.h" |
nanase | 0:ece4ec581d2b | 4 | |
nanase | 0:ece4ec581d2b | 5 | #define PI ((double)3.1415926535897932384626433832795028) |
nanase | 0:ece4ec581d2b | 6 | #define SamplingFreq I2S_AUDIOFREQ_16K |
nanase | 0:ece4ec581d2b | 7 | #define BufferSize (1024) /* Sample Size */ |
nanase | 0:ece4ec581d2b | 8 | #define BufferByteSize (BufferSize * AUDIODATA_SIZE) /* Byte Size */ |
nanase | 0:ece4ec581d2b | 9 | |
nanase | 0:ece4ec581d2b | 10 | #define AudioVolume ((uint8_t)8) |
nanase | 0:ece4ec581d2b | 11 | #define Amplifier ((double)0.25) |
nanase | 0:ece4ec581d2b | 12 | |
nanase | 0:ece4ec581d2b | 13 | #define MaxFreq ((double)8000) |
nanase | 0:ece4ec581d2b | 14 | #define MinFreq ((double)50) |
nanase | 0:ece4ec581d2b | 15 | #define SweepSpeed ((double)0.01) |
nanase | 0:ece4ec581d2b | 16 | |
nanase | 0:ece4ec581d2b | 17 | extern LCD_DISCO_F746NG lcd; |
nanase | 0:ece4ec581d2b | 18 | extern DigitalOut led1; |
nanase | 0:ece4ec581d2b | 19 | extern int16_t sweep_buffer[BufferSize]; |
nanase | 0:ece4ec581d2b | 20 | |
nanase | 0:ece4ec581d2b | 21 | void AUDIO_OUT_SAIx_DMAx_IRQHandler(); |
nanase | 0:ece4ec581d2b | 22 | |
nanase | 0:ece4ec581d2b | 23 | void error_trap(); |
nanase | 0:ece4ec581d2b | 24 | void printlcd(const char *str); |
nanase | 0:ece4ec581d2b | 25 | void printlcdAt(const char *str, uint16_t line); |
nanase | 0:ece4ec581d2b | 26 | |
nanase | 0:ece4ec581d2b | 27 | void fill_buffer(uint32_t offset, uint32_t size); |