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Merged
merged 3 commits into from
Oct 6, 2025
Merged

Update tinyusb to 0.19.0 #554

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10505ac
update tinyusb to 0.19.0
hathach Oct 4, 2025
3ff56cb
resolve conflict with arduino-esp32 bos descriptor and vendor control…
hathach Oct 6, 2025
d0a75e4
fix typo
hathach Oct 6, 2025
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2 changes: 1 addition & 1 deletion src/arduino/webusb/Adafruit_USBD_WebUSB.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -245,7 +245,7 @@ void Adafruit_USBD_WebUSB::flush(void) { tud_vendor_flush(); }
//--------------------------------------------------------------------+
extern "C" {

uint8_t const *tud_descriptor_bos_cb(void) { return desc_bos; }
TU_ATTR_WEAK uint8_t const *tud_descriptor_bos_cb(void) { return desc_bos; }

// Invoked when a control transfer occurred on an interface of this class
// Driver response accordingly to the request and the transfer stage
Expand Down
150 changes: 37 additions & 113 deletions src/class/audio/audio_device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -192,17 +192,6 @@ tu_static CFG_TUD_MEM_SECTION struct {
#endif
} ctrl_buf;

// Active alternate setting of interfaces
tu_static uint8_t alt_setting_1[CFG_TUD_AUDIO_FUNC_1_N_AS_INT];

#if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_N_AS_INT > 0
tu_static uint8_t alt_setting_2[CFG_TUD_AUDIO_FUNC_2_N_AS_INT];
#endif

#if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_N_AS_INT > 0
tu_static uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT];
#endif

// Aligned buffer for feedback EP
#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
tu_static CFG_TUD_MEM_SECTION struct {
Expand Down Expand Up @@ -234,13 +223,14 @@ typedef struct
uint8_t ep_in; // TX audio data EP.
uint16_t ep_in_sz; // Current size of TX EP
uint8_t ep_in_as_intf_num;// Corresponding Standard AS Interface Descriptor (4.9.1) belonging to output terminal to which this EP belongs - 0 is invalid (this fits to UAC2 specification since AS interfaces can not have interface number equal to zero)
#endif
uint8_t ep_in_alt; // Current alternate setting of TX EP
#endif

#if CFG_TUD_AUDIO_ENABLE_EP_OUT
uint8_t ep_out; // Incoming (into uC) audio data EP.
uint16_t ep_out_sz; // Current size of RX EP
uint8_t ep_out_as_intf_num;// Corresponding Standard AS Interface Descriptor (4.9.1) belonging to input terminal to which this EP belongs - 0 is invalid (this fits to UAC2 specification since AS interfaces can not have interface number equal to zero)

uint8_t ep_out_alt; // Current alternate setting of RX EP
#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
uint8_t ep_fb;// Feedback EP.
#endif
Expand Down Expand Up @@ -304,9 +294,6 @@ typedef struct
uint8_t *ctrl_buf;
uint8_t ctrl_buf_sz;

// Current active alternate settings
uint8_t *alt_setting;// We need to save the current alternate setting this way, because it is possible that there are AS interfaces which do not have an EP!

// EP Transfer buffers and FIFOs
#if CFG_TUD_AUDIO_ENABLE_EP_OUT
tu_fifo_t ep_out_ff;
Expand Down Expand Up @@ -475,8 +462,6 @@ static bool audiod_tx_xfer_isr(uint8_t rhport, audiod_function_t* audio, uint16_
static bool audiod_get_interface(uint8_t rhport, tusb_control_request_t const *p_request);
static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *p_request);

static bool audiod_get_AS_interface_index_global(uint8_t itf, uint8_t *func_id, uint8_t *idxItf, uint8_t const **pp_desc_int);
static bool audiod_get_AS_interface_index(uint8_t itf, audiod_function_t *audio, uint8_t *idxItf, uint8_t const **pp_desc_int);
static bool audiod_verify_entity_exists(uint8_t itf, uint8_t entityID, uint8_t *func_id);
static bool audiod_verify_itf_exists(uint8_t itf, uint8_t *func_id);
static bool audiod_verify_ep_exists(uint8_t ep, uint8_t *func_id);
Expand Down Expand Up @@ -529,11 +514,7 @@ tu_fifo_t *tud_audio_n_get_ep_out_ff(uint8_t func_id) {
}

static bool audiod_rx_xfer_isr(uint8_t rhport, audiod_function_t* audio, uint16_t n_bytes_received) {
uint8_t idxItf;
uint8_t const *dummy2;

uint8_t idx_audio_fct = audiod_get_audio_fct_idx(audio);
TU_VERIFY(audiod_get_AS_interface_index(audio->ep_out_as_intf_num, audio, &idxItf, &dummy2));

#if USE_LINEAR_BUFFER_RX
// Data currently is in linear buffer, copy into EP OUT FIFO
Expand All @@ -553,7 +534,7 @@ static bool audiod_rx_xfer_isr(uint8_t rhport, audiod_function_t* audio, uint16_
#endif

// Call a weak callback here - a possibility for user to get informed an audio packet was received and data gets now loaded into EP FIFO
TU_VERIFY(tud_audio_rx_done_isr(rhport, n_bytes_received, idx_audio_fct, audio->ep_out, audio->alt_setting[idxItf]));
TU_VERIFY(tud_audio_rx_done_isr(rhport, n_bytes_received, idx_audio_fct, audio->ep_out, audio->ep_out_alt));

return true;
}
Expand Down Expand Up @@ -584,14 +565,10 @@ tu_fifo_t *tud_audio_n_get_ep_in_ff(uint8_t func_id) {
}

static bool audiod_tx_xfer_isr(uint8_t rhport, audiod_function_t * audio, uint16_t n_bytes_sent) {
uint8_t idxItf;
uint8_t const *dummy2;

uint8_t idx_audio_fct = audiod_get_audio_fct_idx(audio);
TU_VERIFY(audiod_get_AS_interface_index(audio->ep_in_as_intf_num, audio, &idxItf, &dummy2));

// Only send something if current alternate interface is not 0 as in this case nothing is to be sent due to UAC2 specifications
if (audio->alt_setting[idxItf] == 0) { return false; }
if (audio->ep_in_alt == 0) { return false; }

// Send everything in ISO EP FIFO
uint16_t n_bytes_tx;
Expand All @@ -611,7 +588,7 @@ static bool audiod_tx_xfer_isr(uint8_t rhport, audiod_function_t * audio, uint16
#endif

// Call a weak callback here - a possibility for user to get informed former TX was completed and data gets now loaded into EP in buffer
TU_VERIFY(tud_audio_tx_done_isr(rhport, n_bytes_sent, idx_audio_fct, audio->ep_in, audio->alt_setting[idxItf]));
TU_VERIFY(tud_audio_tx_done_isr(rhport, n_bytes_sent, idx_audio_fct, audio->ep_in, audio->ep_in_alt));

return true;
}
Expand Down Expand Up @@ -704,25 +681,6 @@ void audiod_init(void) {
#endif
}

// Initialize active alternate interface buffers
switch (i) {
#if CFG_TUD_AUDIO_FUNC_1_N_AS_INT > 0
case 0:
audio->alt_setting = alt_setting_1;
break;
#endif
#if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_N_AS_INT > 0
case 1:
audio->alt_setting = alt_setting_2;
break;
#endif
#if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_N_AS_INT > 0
case 2:
audio->alt_setting = alt_setting_3;
break;
#endif
}

// Initialize IN EP FIFO if required
#if CFG_TUD_AUDIO_ENABLE_EP_IN

Expand Down Expand Up @@ -1029,13 +987,25 @@ static bool audiod_get_interface(uint8_t rhport, tusb_control_request_t const *p
uint8_t const itf = tu_u16_low(p_request->wIndex);

// Find index of audio streaming interface
uint8_t func_id, idxItf;
uint8_t const *dummy;
uint8_t func_id;
TU_VERIFY(audiod_verify_itf_exists(itf, &func_id));

// Default to 0 if interface not yet activated
uint8_t alt = 0;
#if CFG_TUD_AUDIO_ENABLE_EP_IN
if (_audiod_fct[func_id].ep_in_as_intf_num == itf) {
alt = _audiod_fct[func_id].ep_in_alt;
}
#endif
#if CFG_TUD_AUDIO_ENABLE_EP_OUT
if (_audiod_fct[func_id].ep_out_as_intf_num == itf) {
alt = _audiod_fct[func_id].ep_out_alt;
}
#endif

TU_VERIFY(audiod_get_AS_interface_index_global(itf, &func_id, &idxItf, &dummy));
TU_VERIFY(tud_control_xfer(rhport, p_request, &_audiod_fct[func_id].alt_setting[idxItf], 1));
TU_VERIFY(tud_control_xfer(rhport, p_request, &alt, 1));

TU_LOG2(" Get itf: %u - current alt: %u\r\n", itf, _audiod_fct[func_id].alt_setting[idxItf]);
TU_LOG2(" Get itf: %u - current alt: %u\r\n", itf, alt);

Comment on lines +990 to 1009
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Copilot AI Oct 6, 2025

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GET_INTERFACE returns 0 for AudioStreaming interfaces that have no endpoint, because alt is only derived from ep_in_alt/ep_out_alt. This breaks setups where an AS interface without EP is set to a non-zero alternate setting. Track and return the current alt-setting per AS interface regardless of whether an EP is present (e.g., maintain a small per-interface alt map in audiod_function_t, update it in SET_INTERFACE, and read it here as the primary source).

Copilot uses AI. Check for mistakes.
return true;
}
Expand All @@ -1060,16 +1030,16 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *p
TU_LOG2(" Set itf: %u - alt: %u\r\n", itf, alt);

// Find index of audio streaming interface and index of interface
uint8_t func_id, idxItf;
uint8_t const *p_desc;
TU_VERIFY(audiod_get_AS_interface_index_global(itf, &func_id, &idxItf, &p_desc));
uint8_t func_id;
TU_VERIFY(audiod_verify_itf_exists(itf, &func_id));

audiod_function_t *audio = &_audiod_fct[func_id];

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Copilot AI Oct 6, 2025

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SET_INTERFACE updates ep_in_alt/ep_out_alt when endpoints are found later, but does not persist the alt-setting for interfaces that have no EP. Persist the alt-setting for any AS interface at the start of this handler (e.g., audio->as_itf_alt[itf] = alt), so GET_INTERFACE can report it accurately even when no EP is present.

Suggested change
// Persist the alt-setting for any AS interface, so GET_INTERFACE can report it accurately even when no EP is present
audio->as_itf_alt[itf] = alt;

Copilot uses AI. Check for mistakes.
// Look if there is an EP to be closed - for this driver, there are only 3 possible EPs which may be closed (only AS related EPs can be closed, AC EP (if present) is always open)
#if CFG_TUD_AUDIO_ENABLE_EP_IN
if (audio->ep_in_as_intf_num == itf) {
audio->ep_in_as_intf_num = 0;
audio->ep_in_alt = 0;
#ifndef TUP_DCD_EDPT_ISO_ALLOC
usbd_edpt_close(rhport, audio->ep_in);
#endif
Expand All @@ -1093,6 +1063,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *p
#if CFG_TUD_AUDIO_ENABLE_EP_OUT
if (audio->ep_out_as_intf_num == itf) {
audio->ep_out_as_intf_num = 0;
audio->ep_out_alt = 0;
#ifndef TUP_DCD_EDPT_ISO_ALLOC
usbd_edpt_close(rhport, audio->ep_out);
#endif
Expand All @@ -1116,10 +1087,10 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *p
}
#endif// CFG_TUD_AUDIO_ENABLE_EP_OUT

// Save current alternative interface setting
audio->alt_setting[idxItf] = alt;

// Open new EP if necessary - EPs are only to be closed or opened for AS interfaces - Look for AS interface with correct alternate interface
uint8_t const *p_desc = tu_desc_next(audio->p_desc);
// Skip entire AC descriptor block
p_desc += ((audio_desc_cs_ac_interface_t const *) p_desc)->wTotalLength;
// Get pointer at end
uint8_t const *p_desc_end = audio->p_desc + audio->desc_length - TUD_AUDIO_DESC_IAD_LEN;

Expand Down Expand Up @@ -1154,6 +1125,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *p
// Save address
audio->ep_in = ep_addr;
audio->ep_in_as_intf_num = itf;
audio->ep_in_alt = alt;
audio->ep_in_sz = tu_edpt_packet_size(desc_ep);

// If flow control is enabled, parse for the corresponding parameters - doing this here means only AS interfaces with EPs get scanned for parameters
Expand All @@ -1176,6 +1148,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *p
// Save address
audio->ep_out = ep_addr;
audio->ep_out_as_intf_num = itf;
audio->ep_out_alt = alt;
audio->ep_out_sz = tu_edpt_packet_size(desc_ep);

// Prepare for incoming data
Expand Down Expand Up @@ -1474,8 +1447,7 @@ bool audiod_xfer_isr(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint
#if CFG_TUD_AUDIO_ENABLE_EP_IN

// Data transmission of audio packet finished
if (audio->ep_in == ep_addr && audio->alt_setting != 0)
{
if (audio->ep_in == ep_addr) {
// USB 2.0, section 5.6.4, third paragraph, states "An isochronous endpoint must specify its required bus access period. However, an isochronous endpoint must be prepared to handle poll rates faster than the one specified."
// That paragraph goes on to say "An isochronous IN endpoint must return a zero-length packet whenever data is requested at a faster interval than the specified interval and data is not available."
// This can only be solved reliably if we load a ZLP after every IN transmission since we can not say if the host requests samples earlier than we declared! Once all samples are collected we overwrite the loaded ZLP.
Expand All @@ -1492,8 +1464,7 @@ bool audiod_xfer_isr(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint

#if CFG_TUD_AUDIO_ENABLE_EP_OUT
// New audio packet received
if (audio->ep_out == ep_addr)
{
if (audio->ep_out == ep_addr) {
audiod_rx_xfer_isr(rhport, audio, (uint16_t) xferred_bytes);
return true;
}
Expand Down Expand Up @@ -1694,53 +1665,6 @@ bool tud_audio_buffer_and_schedule_control_xfer(uint8_t rhport, tusb_control_req
return tud_control_xfer(rhport, p_request, (void *) _audiod_fct[func_id].ctrl_buf, len);
}

// This helper function finds for a given audio function and AS interface number the index of the attached driver structure, the index of the interface in the audio function
// (e.g. the std. AS interface with interface number 15 is the first AS interface for the given audio function and thus gets index zero), and
// finally a pointer to the std. AS interface, where the pointer always points to the first alternate setting i.e. alternate interface zero.
static bool audiod_get_AS_interface_index(uint8_t itf, audiod_function_t *audio, uint8_t *idxItf, uint8_t const **pp_desc_int) {
if (audio->p_desc) {
// Get pointer at end
uint8_t const *p_desc_end = audio->p_desc + audio->desc_length - TUD_AUDIO_DESC_IAD_LEN;

// Advance past AC descriptors
uint8_t const *p_desc = tu_desc_next(audio->p_desc);
p_desc += ((audio_desc_cs_ac_interface_t const *) p_desc)->wTotalLength;

uint8_t tmp = 0;
// Condition modified from p_desc < p_desc_end to prevent gcc>=12 strict-overflow warning
while (p_desc_end - p_desc > 0) {
// We assume the number of alternate settings is increasing thus we return the index of alternate setting zero!
if (tu_desc_type(p_desc) == TUSB_DESC_INTERFACE && ((tusb_desc_interface_t const *) p_desc)->bAlternateSetting == 0) {
if (((tusb_desc_interface_t const *) p_desc)->bInterfaceNumber == itf) {
*idxItf = tmp;
*pp_desc_int = p_desc;
return true;
}
// Increase index, bytes read, and pointer
tmp++;
}
p_desc = tu_desc_next(p_desc);
}
}
return false;
}

// This helper function finds for a given AS interface number the index of the attached driver structure, the index of the interface in the audio function
// (e.g. the std. AS interface with interface number 15 is the first AS interface for the given audio function and thus gets index zero), and
// finally a pointer to the std. AS interface, where the pointer always points to the first alternate setting i.e. alternate interface zero.
static bool audiod_get_AS_interface_index_global(uint8_t itf, uint8_t *func_id, uint8_t *idxItf, uint8_t const **pp_desc_int) {
// Loop over audio driver interfaces
uint8_t i;
for (i = 0; i < CFG_TUD_AUDIO; i++) {
if (audiod_get_AS_interface_index(itf, &_audiod_fct[i], idxItf, pp_desc_int)) {
*func_id = i;
return true;
}
}

return false;
}

// Verify an entity with the given ID exists and returns also the corresponding driver index
static bool audiod_verify_entity_exists(uint8_t itf, uint8_t entityID, uint8_t *func_id) {
uint8_t i;
Expand All @@ -1754,8 +1678,8 @@ static bool audiod_verify_entity_exists(uint8_t itf, uint8_t entityID, uint8_t *

// Condition modified from p_desc < p_desc_end to prevent gcc>=12 strict-overflow warning
while (p_desc_end - p_desc > 0) {
if (p_desc[3] == entityID)// Entity IDs are always at offset 3
{
// Entity IDs are always at offset 3
if (p_desc[3] == entityID) {
*func_id = i;
return true;
}
Expand All @@ -1775,7 +1699,7 @@ static bool audiod_verify_itf_exists(uint8_t itf, uint8_t *func_id) {
uint8_t const *p_desc_end = _audiod_fct[i].p_desc + _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN;
// Condition modified from p_desc < p_desc_end to prevent gcc>=12 strict-overflow warning
while (p_desc_end - p_desc > 0) {
if (tu_desc_type(p_desc) == TUSB_DESC_INTERFACE && ((tusb_desc_interface_t const *) _audiod_fct[i].p_desc)->bInterfaceNumber == itf) {
if (tu_desc_type(p_desc) == TUSB_DESC_INTERFACE && ((tusb_desc_interface_t const *)p_desc)->bInterfaceNumber == itf) {
*func_id = i;
return true;
}
Expand Down
15 changes: 0 additions & 15 deletions src/class/audio/audio_device.h
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Original file line number Diff line number Diff line change
Expand Up @@ -51,21 +51,6 @@
#endif
#endif

// 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
#ifndef CFG_TUD_AUDIO_FUNC_1_N_AS_INT
#error You must tell the driver the number of Standard AS Interface Descriptors you have defined in the audio function descriptor!
#endif
#if CFG_TUD_AUDIO > 1
#ifndef CFG_TUD_AUDIO_FUNC_2_N_AS_INT
#error You must tell the driver the number of Standard AS Interface Descriptors you have defined in the audio function descriptor!
#endif
#endif
#if CFG_TUD_AUDIO > 2
#ifndef CFG_TUD_AUDIO_FUNC_3_N_AS_INT
#error You must tell the driver the number of Standard AS Interface Descriptors you have defined in the audio function descriptor!
#endif
#endif

// Size of control buffer used to receive and send control messages via EP0 - has to be big enough to hold your biggest request structure e.g. range requests with multiple intervals defined or cluster descriptors
#ifndef CFG_TUD_AUDIO_FUNC_1_CTRL_BUF_SZ
#error You must define an audio class control request buffer size!
Expand Down
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