keyboard/qmk-keychron-q3-colemak-dh
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Squashed 'tmk_core/' changes from 7967731..b9e0ea0

Browse Source 
b9e0ea0 Merge commit '7fa9d8bdea3773d1195b04d98fcf27cf48ddd81d' as 'tool/mbed/mbed-sdk'
7fa9d8b Squashed 'tool/mbed/mbed-sdk/' content from commit 7c21ce5

git-subtree-dir: tmk_core
git-subtree-split: b9e0ea08cb940de20b3610ecdda18e9d8cd7c552
This commit is contained in:
Jun Wako
2015-04-24 16:26:14 +09:00
parent a20ef7052c
commit 1fe4406f37
4198 changed files with 2016457 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
tool/mbed/mbed-sdk/libraries/tests/usb/device/audio/main.cpp Normal file
View File

@ -0,0 +1,40 @@
// Playback example with the USBAUDIO library
#include "mbed.h"
#include "USBAudio.h"
// frequency: 48 kHz
#define FREQ_SPK 48000
#define FREQ_MIC 48000
// 2channels: stereo
#define NB_CHA_SPK 2
#define NB_CHA_MIC 2
// length computed: each ms, we receive 48 * 16bits ->48 * 2 bytes. as there are two channels, the length will be 48 * 2 * 2
#define LENGTH_AUDIO_PACKET_SPK (FREQ_SPK / 500) * NB_CHA_SPK
#define LENGTH_AUDIO_PACKET_MIC (FREQ_MIC / 500) * NB_CHA_MIC
// USBAudio object
USBAudio audio(FREQ_SPK, NB_CHA_SPK, FREQ_MIC, NB_CHA_MIC, 0xab45, 0x0378);
int main() {
// buffer of int
int buf_in[LENGTH_AUDIO_PACKET_SPK/sizeof(int)];
int buf_out[LENGTH_AUDIO_PACKET_MIC/sizeof(int)];
int * stream_out = buf_in;
int * stream_in = buf_out;
int * tmp = NULL;
while (1) {
// read and write one audio packet each frame
audio.readWrite((uint8_t *)stream_in, (uint8_t *)stream_out);
// swap the buffers
tmp = stream_in;
stream_in = stream_out;
stream_out = tmp;
}
}