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fix issue when calling midi API when not enumerated yet

This commit is contained in:
hathach 2021-06-21 00:00:46 +07:00
parent 81fa9966de
commit 9323a9d094
1 changed files with 8 additions and 7 deletions
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15
src/class/midi/midi_device.c
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@ -197,9 +197,11 @@ uint32_t tud_midi_n_stream_read(uint8_t itf, uint8_t cable_num, void* buffer, ui
bool tud_midi_n_packet_read (uint8_t itf, uint8_t packet[4])
{
midid_interface_t* p_midi = &_midid_itf[itf];
uint32_t num_read = tu_fifo_read_n(&p_midi->rx_ff, packet, 4);
_prep_out_transaction(p_midi);
midid_interface_t* midi = &_midid_itf[itf];
TU_VERIFY(midi->ep_out);
uint32_t const num_read = tu_fifo_read_n(&midi->rx_ff, packet, 4);
_prep_out_transaction(midi);
return (num_read == 4);
}
@ -234,7 +236,7 @@ static uint32_t write_flush(midid_interface_t* midi)
uint32_t tud_midi_n_stream_write(uint8_t itf, uint8_t cable_num, uint8_t const* buffer, uint32_t bufsize)
{
midid_interface_t* midi = &_midid_itf[itf];
TU_VERIFY(midi->itf_num, 0);
TU_VERIFY(midi->ep_in, 0);
midid_stream_t* stream = &midi->stream_write;
@ -351,9 +353,7 @@ uint32_t tud_midi_n_stream_write(uint8_t itf, uint8_t cable_num, uint8_t const*
bool tud_midi_n_packet_write (uint8_t itf, uint8_t const packet[4])
{
midid_interface_t* midi = &_midid_itf[itf];
if (midi->itf_num == 0) {
return 0;
}
TU_VERIFY(midi->ep_in);
if (tu_fifo_remaining(&midi->tx_ff) < 4) return false;
@ -435,6 +435,7 @@ uint16_t midid_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint
}
p_midi->itf_num = desc_midi->bInterfaceNumber;
(void) p_midi->itf_num;
// next descriptor
drv_len += tu_desc_len(p_desc);