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Further tidy up

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This commit is contained in:
Ross Owen
2013-03-07 17:57:39 +00:00
parent cf14ee398c
commit 9189e90f6c
1 changed files with 11 additions and 24 deletions
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35
module_usb_audio/usb_buffer/usb_buffer.xc
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@@ -61,7 +61,7 @@ int g_midi_from_host_buffer[MAX_USB_MIDI_PACKET_SIZE/4+4];
unsigned int g_iap_to_host_buffer_A[MAX_IAP_PACKET_SIZE/4+4];
unsigned int g_iap_to_host_buffer_B[MAX_IAP_PACKET_SIZE/4+4];
unsigned int g_iap_from_host_buffer[MAX_IAP_PACKET_SIZE/4+4];
unsigned char gc_zero_buffer2[4];
unsigned char gc_zero_buffer[4];
unsigned g_iap_reset = 1;
unsigned g_iap_from_host_flag = 0;
unsigned g_iap_to_host_flag = 0;
@@ -167,7 +167,6 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
xc_ptr iap_from_host_rdptr;
xc_ptr iap_to_host_buffer_being_sent = array_to_xc_ptr(g_iap_to_host_buffer_A);
xc_ptr iap_to_host_buffer_being_collected = array_to_xc_ptr(g_iap_to_host_buffer_B);
//xc_ptr iap_from_host_buffer = array_to_xc_ptr(g_iap_from_host_buffer);
unsigned char iap_from_host_buffer[MAX_IAP_PACKET_SIZE+4];
@@ -183,9 +182,6 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
int iap_from_host_flag = 0;
int iap_expecting_length = 1;
int iap_expecting_data_length = 0;
//xc_ptr iap_to_host_buffer = 0;
//xc_ptr iap_to_host_waiting_buffer = 0;
#endif
@@ -621,13 +617,6 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
case XUD_SetData_Select(c_iap_to_host, ep_iap_to_host, tmp):
asm("#iap d->h");
// ack the decouple thread to say it has been sent to host
//SET_SHARED_GLOBAL(g_iap_to_host_flag, 1);
//swap(iap_to_host_buffer, iap_to_host_waiting_buffer);
/* The buffer has been sent to the host, so we can ack the iap thread */
//SET_SHARED_GLOBAL(g_iap_to_host_flag, 0);
if (iap_data_collected_from_device != 0)
{
/* We have some more data to send set the amount of data to send */
@@ -637,11 +626,12 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
swap(iap_to_host_buffer_being_collected, iap_to_host_buffer_being_sent);
/* Request to send packet */
XUD_SetReady_In(ep_iap_to_host_int, gc_zero_buffer2, 0); // ZLP to int ep
XUD_SetReady_In(ep_iap_to_host_int, gc_zero_buffer, 0); // ZLP to int ep
XUD_SetReady_InPtr(ep_iap_to_host, iap_to_host_buffer_being_sent+4, iap_data_collected_from_device);
/* Mark as waiting for host to poll us */
iap_waiting_on_send_to_host = 1;
/* Reset the collected data count */
iap_data_collected_from_device = 0;
}
@@ -649,17 +639,11 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
{
iap_waiting_on_send_to_host = 0;
}
break; /* IAP IN to host */
case XUD_SetData_Select(c_iap_to_host_int, ep_iap_to_host_int, tmp):
asm("#iap int d->h");
/* Do nothing.. */
break;
#endif
@@ -742,7 +726,7 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
}
else
{
/* Read another word from the fifo and output it to iap thread */
/* Read another byte from the fifo and output it to iap thread */
datum_iap = iap_from_host_buffer[iap_from_host_rdptr];
outuint(c_iap, datum_iap);
iap_from_host_rdptr += 1;
@@ -753,10 +737,13 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
{
/* The iap/uart thread has sent us some data - handshake back */
iap_send_ack(c_iap);
if (iap_expecting_length) {
if (iap_expecting_length)
{
iap_expecting_data_length = datum_iap;
iap_expecting_length = 0;
} else {
}
else
{
if (iap_data_collected_from_device < IAP_USB_BUFFER_TO_HOST_SIZE)
{
/* There is room in the collecting buffer for the data */
@@ -779,7 +766,7 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
swap(iap_to_host_buffer_being_collected, iap_to_host_buffer_being_sent);
// Signal other side to swap
XUD_SetReady_In(ep_iap_to_host_int, gc_zero_buffer2, 0);
XUD_SetReady_In(ep_iap_to_host_int, gc_zero_buffer, 0);
XUD_SetReady_InPtr(ep_iap_to_host, iap_to_host_buffer_being_sent+4, iap_data_collected_from_device);
iap_data_collected_from_device = 0;
iap_waiting_on_send_to_host = 1;