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MIDI Rx port now buffered. Means that Start-bit detect select case doesn't get started on receipt of large MIDI packet.

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This commit is contained in:
Ross Owen
2014-01-11 16:33:29 +00:00
parent 507afd4f60
commit 3570f551e1
3 changed files with 12 additions and 10 deletions
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2
module_usb_midi/src/usb_midi.h
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@@ -15,7 +15,7 @@
* \param cable_number the cable number of the MIDI implementation.
* This should be set to 0.
**/
void usb_midi(port ?p_midi_in, port ?p_midi_out,
void usb_midi(buffered in port:1 ?p_midi_in, port ?p_midi_out,
clock ?clk_midi,
chanend ?c_midi,
unsigned cable_number,

18
module_usb_midi/src/usb_midi.xc
View File

@@ -22,7 +22,7 @@ static unsigned makeSymbol(unsigned data)
#define RATE 31250
#ifndef MIDI_SHIFT_TX
#define MIDI_SHIFT_TX 7
#define MIDI_SHIFT_TX 0
#endif
static unsigned bit_time = XS1_TIMER_MHZ * 1000000 / (unsigned) RATE;
@@ -51,7 +51,7 @@ timer iAPTimer;
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
void usb_midi(port ?p_midi_in, port ?p_midi_out,
void usb_midi(buffered in port:1 ?p_midi_in, port ?p_midi_out,
clock ?clk_midi,
chanend ?c_midi,
unsigned cable_number,
@@ -169,12 +169,14 @@ void usb_midi(port ?p_midi_in, port ?p_midi_out,
unsigned event = 0;
uin_count++;
rxByte >>= 24;
// if (rxByte != outputted_symbol) {
// // Loopback check
// printhexln(rxByte);
// printhexln(outputted_symbol);
// }
#if 0
// Loopback check
if ((rxByte != outputted_symbol))
{
printhexln(rxByte);
printhexln(outputted_symbol);
}
#endif
{valid, event} = midi_in_parse(mips, cable_number, rxByte);
if (valid && queue_is_empty(midi_to_host_fifo))
{