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Simplify the ready in logic for midi and iap endpoints in decouple.

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This commit is contained in:
Russell Gallop
2011-08-16 17:02:35 +01:00
parent 029d499e80
commit 4693b9d0b5
1 changed files with 11 additions and 25 deletions
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36
module_usb_aud_shared/usb_buffer/decouple.xc
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@@ -1068,12 +1068,8 @@ void decouple(chanend c_mix_out,
/* Swap the collecting and sending buffer */ /* Swap the collecting and sending buffer */
swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent); swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent);
{ /* Request to send packet */
/* Request to send packet */ XUD_SetReady_In(midi_to_host_usb_ep, 0, midi_to_host_buffer_being_sent+4, midi_data_collected_from_device);
int len;
asm("ldw %0, %1[0]":"=r"(len):"r"(midi_to_host_buffer_being_sent));
XUD_SetReady_In(midi_to_host_usb_ep, 0, midi_to_host_buffer_being_sent+4, len);
}
/* Mark as waiting for host to poll us */ /* Mark as waiting for host to poll us */
midi_waiting_on_send_to_host = 1; midi_waiting_on_send_to_host = 1;
@@ -1158,16 +1154,12 @@ void decouple(chanend c_mix_out,
if (!midi_waiting_on_send_to_host) if (!midi_waiting_on_send_to_host)
{ {
write_via_xc_ptr(midi_to_host_buffer_being_collected, midi_data_collected_from_device); write_via_xc_ptr(midi_to_host_buffer_being_collected, midi_data_collected_from_device);
midi_data_collected_from_device = 0;
swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent); swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent);
// Signal other side to swap // Signal other side to swap
{ XUD_SetReady_In(midi_to_host_usb_ep, 0, midi_to_host_buffer_being_sent+4, midi_data_collected_from_device);
int len; midi_data_collected_from_device = 0;
asm("ldw %0, %1[0]":"=r"(len):"r"(midi_to_host_buffer_being_sent));
XUD_SetReady_In(midi_to_host_usb_ep, 0, midi_to_host_buffer_being_sent+4, len);
}
midi_waiting_on_send_to_host = 1; midi_waiting_on_send_to_host = 1;
} }
} }
@@ -1179,6 +1171,7 @@ void decouple(chanend c_mix_out,
#ifdef IAP #ifdef IAP
#ifdef IAP_BUFFERED #ifdef IAP_BUFFERED
// Need to handle sending ZLP on iap_to_host_usb_ep_int to signal iOS device to collect from bulk endpoint.
/* Check if buffer() has send IAP packet to host */ /* Check if buffer() has send IAP packet to host */
GET_SHARED_GLOBAL(iap_to_host_flag, g_iap_to_host_flag); GET_SHARED_GLOBAL(iap_to_host_flag, g_iap_to_host_flag);
if (iap_to_host_flag) if (iap_to_host_flag)
@@ -1193,12 +1186,8 @@ void decouple(chanend c_mix_out,
/* Swap the collecting and sending buffer */ /* Swap the collecting and sending buffer */
swap(iap_to_host_buffer_being_collected, iap_to_host_buffer_being_sent); swap(iap_to_host_buffer_being_collected, iap_to_host_buffer_being_sent);
{ /* Request to send packet */
/* Request to send packet */ XUD_SetReady_In(iap_to_host_usb_ep, 0, iap_to_host_buffer_being_sent+4, iap_data_collected_from_device);
int len;
asm("ldw %0, %1[0]":"=r"(len):"r"(iap_to_host_buffer_being_sent));
XUD_SetReady_In(iap_to_host_usb_ep, 0, iap_to_host_buffer_being_sent+4, len);
}
/* Mark as waiting for host to poll us */ /* Mark as waiting for host to poll us */
iap_waiting_on_send_to_host = 1; iap_waiting_on_send_to_host = 1;
@@ -1282,17 +1271,14 @@ void decouple(chanend c_mix_out,
// If we are not sending data to the host then initiate it // If we are not sending data to the host then initiate it
if (!iap_waiting_on_send_to_host) if (!iap_waiting_on_send_to_host)
{ {
// Set first element of buffer to length i.e. iap_to_host_buffer_being_collected[0] = iap_data_collected_from_device;
write_via_xc_ptr(iap_to_host_buffer_being_collected, iap_data_collected_from_device); write_via_xc_ptr(iap_to_host_buffer_being_collected, iap_data_collected_from_device);
iap_data_collected_from_device = 0;
swap(iap_to_host_buffer_being_collected, iap_to_host_buffer_being_sent); swap(iap_to_host_buffer_being_collected, iap_to_host_buffer_being_sent);
// Signal other side to swap // Signal other side to swap
{ XUD_SetReady_In(iap_to_host_usb_ep, 0, iap_to_host_buffer_being_sent+4, iap_data_collected_from_device);
int len; iap_data_collected_from_device = 0;
asm("ldw %0, %1[0]":"=r"(len):"r"(iap_to_host_buffer_being_sent));
XUD_SetReady_In(iap_to_host_usb_ep, 0, iap_to_host_buffer_being_sent+4, len);
}
iap_waiting_on_send_to_host = 1; iap_waiting_on_send_to_host = 1;
} }
} }