mirror/tinyusb
1
0
Fork 0
mirror of https://github.com/hathach/tinyusb.git synced 2025-03-25 10:43:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

tested with midi

Browse Source
This commit is contained in:
hathach 2020-04-15 01:01:31 +07:00
parent 8614dcece7
commit bae570f7c7
No known key found for this signature in database
GPG Key ID: 2FA891220FBFD581
1 changed files with 30 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
src/class/midi/midi_device.c
View File

@ -253,21 +253,31 @@ void midid_reset(uint8_t rhport)
}
}
bool midid_open(uint8_t rhport, tusb_desc_interface_t const * p_interface_desc, uint16_t *p_length)
bool midid_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint16_t *p_length)
{
// For now handle the audio control interface as well.
if ( AUDIO_SUBCLASS_CONTROL == p_interface_desc->bInterfaceSubClass) {
uint8_t const * p_desc = tu_desc_next ( (uint8_t const *) p_interface_desc );
(*p_length) = sizeof(tusb_desc_interface_t);
// Skip over the class specific descriptor.
(*p_length) += tu_desc_len(p_desc);
// 1st Interface is Audio Control v1
TU_VERIFY(TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass &&
AUDIO_SUBCLASS_CONTROL == desc_itf->bInterfaceSubClass &&
AUDIO_PROTOCOL_V1 == desc_itf->bInterfaceProtocol);
uint16_t drv_len = tu_desc_len(desc_itf);
uint8_t const * p_desc = tu_desc_next(desc_itf);
// Skip Class Specific descriptors
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) )
{
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
return true;
}
TU_VERIFY(AUDIO_SUBCLASS_MIDI_STREAMING == p_interface_desc->bInterfaceSubClass &&
AUDIO_PROTOCOL_V1 == p_interface_desc->bInterfaceProtocol );
// 2nd Interface is MIDI Streaming
TU_VERIFY(TUSB_DESC_INTERFACE == tu_desc_type(p_desc));
tusb_desc_interface_t const * desc_midi = (tusb_desc_interface_t const *) p_desc;
TU_VERIFY(TUSB_CLASS_AUDIO == desc_midi->bInterfaceClass &&
AUDIO_SUBCLASS_MIDI_STREAMING == desc_midi->bInterfaceSubClass &&
AUDIO_PROTOCOL_V1 == desc_midi->bInterfaceProtocol );
// Find available interface
midid_interface_t * p_midi = NULL;
@ -280,13 +290,15 @@ bool midid_open(uint8_t rhport, tusb_desc_interface_t const * p_interface_desc,
}
}
p_midi->itf_num = p_interface_desc->bInterfaceNumber;
p_midi->itf_num = desc_midi->bInterfaceNumber;
uint8_t const * p_desc = tu_desc_next( (uint8_t const *) p_interface_desc );
(*p_length) = sizeof(tusb_desc_interface_t);
// next descriptor
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
// Find and open endpoint descriptors
uint8_t found_endpoints = 0;
while (found_endpoints < p_interface_desc->bNumEndpoints)
while (found_endpoints < desc_midi->bNumEndpoints)
{
if ( TUSB_DESC_ENDPOINT == p_desc[DESC_OFFSET_TYPE])
{
@ -298,14 +310,16 @@ bool midid_open(uint8_t rhport, tusb_desc_interface_t const * p_interface_desc,
p_midi->ep_out = ep_addr;
}
(*p_length) += p_desc[DESC_OFFSET_LEN];
drv_len += p_desc[DESC_OFFSET_LEN];
p_desc = tu_desc_next(p_desc);
found_endpoints += 1;
}
(*p_length) += p_desc[DESC_OFFSET_LEN];
drv_len += p_desc[DESC_OFFSET_LEN];
p_desc = tu_desc_next(p_desc);
}
*p_length = drv_len;
// Prepare for incoming data
TU_ASSERT( usbd_edpt_xfer(rhport, p_midi->ep_out, p_midi->epout_buf, CFG_TUD_MIDI_EPSIZE), false);