andy/tinyUSB
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Complete redesign of audio driver.

Browse Source
This commit is contained in:
Reinhard Panhuber
2021-02-12 16:28:41 +01:00
parent 84406f1654
commit a9fd0a454a
7 changed files with 242 additions and 400 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
examples/device/audio_test/src/main.c
View File

@@ -59,7 +59,7 @@ audio_control_range_2_n_t(1) volumeRng[CFG_TUD_AUDIO_N_CHANNELS_TX+1]; // Vol
audio_control_range_4_n_t(1) sampleFreqRng; // Sample frequency range state
// Audio test data
uint16_t test_buffer_audio[CFG_TUD_AUDIO_TX_FIFO_SIZE/2];
uint16_t test_buffer_audio[CFG_TUD_AUDIO_EPSIZE_IN/2];
uint16_t startVal = 0;
void led_blinking_task(void);
@@ -73,12 +73,12 @@ int main(void)
tusb_init();
// Init values
sampFreq = 44100;
sampFreq = 48000;
clkValid = 1;
sampleFreqRng.wNumSubRanges = 1;
sampleFreqRng.subrange[0].bMin = 44100;
sampleFreqRng.subrange[0].bMax = 44100;
sampleFreqRng.subrange[0].bMin = 48000;
sampleFreqRng.subrange[0].bMax = 48000;
sampleFreqRng.subrange[0].bRes = 0;
while (1)
@@ -375,7 +375,7 @@ bool tud_audio_tx_done_pre_load_cb(uint8_t rhport, uint8_t itf, uint8_t ep_in, u
(void) ep_in;
(void) cur_alt_setting;
tud_audio_write ((uint8_t *)test_buffer_audio, CFG_TUD_AUDIO_TX_FIFO_SIZE);
tud_audio_write ((uint8_t *)test_buffer_audio, CFG_TUD_AUDIO_EPSIZE_IN);
return true;
}
@@ -388,7 +388,7 @@ bool tud_audio_tx_done_post_load_cb(uint8_t rhport, uint16_t n_bytes_copied, uin
(void) ep_in;
(void) cur_alt_setting;
for (size_t cnt = 0; cnt < CFG_TUD_AUDIO_TX_FIFO_SIZE/2; cnt++)
for (size_t cnt = 0; cnt < CFG_TUD_AUDIO_EPSIZE_IN/2; cnt++)
{
test_buffer_audio[cnt] = startVal++;
}

7
examples/device/audio_test/src/tusb_config.h
View File

@@ -90,7 +90,6 @@ extern "C" {
//--------------------------------------------------------------------
// Audio format type
#define CFG_TUD_AUDIO_USE_TX_FIFO 1
#define CFG_TUD_AUDIO_FORMAT_TYPE_TX AUDIO_FORMAT_TYPE_I
#define CFG_TUD_AUDIO_FORMAT_TYPE_RX AUDIO_FORMAT_TYPE_UNDEFINED
@@ -100,11 +99,11 @@ extern "C" {
#define CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX 2
// EP and buffer size - for isochronous EP´s, the buffer and EP size are equal (different sizes would not make sense)
#define CFG_TUD_AUDIO_EPSIZE_IN 48*CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX*CFG_TUD_AUDIO_N_CHANNELS_TX // 48 Samples (48 kHz) x 2 Bytes/Sample x 1 Channels
#define CFG_TUD_AUDIO_TX_FIFO_SIZE 48*2 // 48 Samples (48 kHz) x 2 Bytes/Sample (1/2 word)
#define CFG_TUD_AUDIO_EPSIZE_IN 48*CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX*CFG_TUD_AUDIO_N_CHANNELS_TX // 48 Samples (48 kHz) x 2 Bytes/Sample x 1 Channels
#define CFG_TUD_AUDIO_EP_IN_SW_BUFFER_SIZE CFG_TUD_AUDIO_EPSIZE_IN + 1; // Just for safety one sample more space
// Number of Standard AS Interface Descriptors (4.9.1) defined per audio function - this is required to be able to remember the current alternate settings of these interfaces - We restrict us here to have a constant number for all audio functions (which means this has to be the maximum number of AS interfaces an audio function has and a second audio function with less AS interfaces just wastes a few bytes)
#define CFG_TUD_AUDIO_N_AS_INT 1
#define CFG_TUD_AUDIO_N_AS_INT 1
// Size of control request buffer
#define CFG_TUD_AUDIO_CTRL_BUF_SIZE 64

2
examples/device/audio_test/src/usb_descriptors.c
View File

@@ -102,7 +102,7 @@ uint8_t const desc_configuration[] =
TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
// Interface number, string index, EP Out & EP In address, EP size
TUD_AUDIO_MIC_DESCRIPTOR(/*_itfnum*/ ITF_NUM_AUDIO_CONTROL, /*_stridx*/ 0, /*_nBytesPerSample*/ 3, /*_nBitsUsedPerSample*/ 24, /*_epin*/ 0x80 | EPNUM_AUDIO, /*_epsize*/ 48*4)
TUD_AUDIO_MIC_DESCRIPTOR(/*_itfnum*/ ITF_NUM_AUDIO_CONTROL, /*_stridx*/ 0, /*_nBytesPerSample*/ CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX, /*_nBitsUsedPerSample*/ 16, /*_epin*/ 0x80 | EPNUM_AUDIO, /*_epsize*/ CFG_TUD_AUDIO_EPSIZE_IN)
};
// Invoked when received GET CONFIGURATION DESCRIPTOR