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Add flow control for IN transfer.

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This commit is contained in:
HiFiPhile
2023-10-17 09:46:01 +02:00
parent 118823c254
commit 656e1e416a
5 changed files with 187 additions and 21 deletions
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16
src/class/audio/audio_device.h
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@@ -181,6 +181,11 @@
#endif
#endif
// (For TYPE-I format only) Flow control is necessary to allow IN ep send correct amount of data, unless it's a virtual device where data is perfectly synchronized to USB clock.
#ifndef CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL
#define CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL 1
#endif
// Enable/disable feedback EP (required for asynchronous RX applications)
#ifndef CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP 0 // Feedback - 0 or 1
@@ -392,6 +397,10 @@ tu_fifo_t* tud_audio_n_get_tx_support_ff (uint8_t func_id, uint8_t ff_i
uint16_t tud_audio_int_ctr_n_write (uint8_t func_id, uint8_t const* buffer, uint16_t len);
#endif
#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL
bool tud_audio_n_set_tx_flow_control (uint8_t func_id, uint32_t sample_rate);
#endif
//--------------------------------------------------------------------+
// Application API (Interface0)
//--------------------------------------------------------------------+
@@ -670,6 +679,13 @@ static inline uint16_t tud_audio_int_ctr_write(uint8_t const* buffer, uint16_t l
}
#endif
#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL
static inline bool tud_audio_set_tx_flow_control(uint32_t sample_rate)
{
return tud_audio_n_set_tx_flow_control(0, sample_rate);
}
#endif
#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
static inline bool tud_audio_fb_set(uint32_t feedback)