diff options
Diffstat (limited to 'src/class')
| -rw-r--r-- | src/class/midi/midi_device.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/src/class/midi/midi_device.c b/src/class/midi/midi_device.c index de41706e8..c6c99db29 100644 --- a/src/class/midi/midi_device.c +++ b/src/class/midi/midi_device.c @@ -406,19 +406,25 @@ void midid_reset(uint8_t rhport) uint16_t midid_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint16_t max_len) { + uint16_t drv_len = 0; + uint8_t const * p_desc = (uint8_t const *)desc_itf; // 1st Interface is Audio Control v1 - TU_VERIFY(TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass && + if (TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass && AUDIO_SUBCLASS_CONTROL == desc_itf->bInterfaceSubClass && - AUDIO_FUNC_PROTOCOL_CODE_UNDEF == desc_itf->bInterfaceProtocol, 0); - - 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 <= max_len ) + AUDIO_FUNC_PROTOCOL_CODE_UNDEF == desc_itf->bInterfaceProtocol) { - drv_len += tu_desc_len(p_desc); - p_desc = tu_desc_next(p_desc); + drv_len = tu_desc_len(desc_itf); + p_desc = tu_desc_next(desc_itf); + // Skip Class Specific descriptors + while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) && drv_len <= max_len ) + { + drv_len += tu_desc_len(p_desc); + p_desc = tu_desc_next(p_desc); + } + } + else + { + TU_LOG1("Warning: MIDI Device has no Audio Control Interface"); } // 2nd Interface is MIDI Streaming |