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Tidied up iAP reset

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This commit is contained in:
Ross Owen
2013-03-08 14:56:29 +00:00
parent 5199f00733
commit 5cf3d6c45a
2 changed files with 18 additions and 32 deletions
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48
module_usb_audio/usb_buffer/usb_buffer.xc
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@@ -119,7 +119,8 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
#endif
unsigned tmp;
int tmp;
unsigned u_tmp;
unsigned sampleFreq = 0;
unsigned lastClock;
@@ -175,13 +176,8 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
set_thread_fast_mode_on();
#ifdef IAP
/* Note the order here is important */
//XUD_ResetDrain(c_iap_to_host);
//XUD_ResetDrain(c_iap_to_host_int);
//XUD_GetBusSpeed(c_iap_to_host);
//XUD_GetBusSpeed(c_iap_to_host_int);
#warning TODO ADD BACK IAP RESET
XUD_ResetEndpoint(ep_iap_from_host, null);
iap_send_reset(c_iap);
#endif
@@ -270,22 +266,6 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
while(1)
{
#ifdef IAP
#warning TIDY ME UP!!
{
int iap_reset;
GET_SHARED_GLOBAL(iap_reset, g_iap_reset);
if (iap_reset)
{
iap_send_reset(c_iap); // What if this happen in the middle of a send/ack?
SET_SHARED_GLOBAL(g_iap_reset, 0); // Reset has been signalled
iap_data_collected_from_device = 0;
}
}
#endif
/* Wait for response from XUD and service relevant EP */
select
{
@@ -301,9 +281,9 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
#endif
/* Sample Freq our chan count update from ep 0 */
case testct_byref(c_aud_ctl, tmp):
case testct_byref(c_aud_ctl, u_tmp):
{
if (tmp)
if (u_tmp)
{
// is a control token sent by reboot_device
inct(c_aud_ctl);
@@ -390,20 +370,20 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
#define MASK_16_13 (7) // Bits that should not be transmitted as part of feedback.
#define MASK_16_10 (127) //(63) /* For Audio 1.0 we use a mask 1 bit longer than expected to avoid Windows LSB isses */
case inuint_byref(c_sof, tmp):
case inuint_byref(c_sof, u_tmp):
/* NOTE our feedback will be wrong for a couple of SOF's after a SF change due to
* lastClock being incorrect */
asm("#sof");
/* Get MCLK count */
asm (" getts %0, res[%1]" : "=r" (tmp) : "r" (p_off_mclk));
asm (" getts %0, res[%1]" : "=r" (u_tmp) : "r" (p_off_mclk));
GET_SHARED_GLOBAL(freqChange, g_freqChange);
if(freqChange == SET_SAMPLE_FREQ)
{
/* Keep getting MCLK counts */
lastClock = tmp;
lastClock = u_tmp;
}
else
{
@@ -416,7 +396,7 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
/* Number of MCLKS this SOF, approx 125 * 24 (3000), sample by sample rate */
GET_SHARED_GLOBAL(cycles, g_curSamFreqMultiplier);
cycles = ((int)((short)(tmp - lastClock))) * cycles;
cycles = ((int)((short)(u_tmp - lastClock))) * cycles;
/* Any odd bits (lower than 16.23) have to be kept seperate */
remnant += cycles & mask;
@@ -428,7 +408,7 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
remnant &= mask;
/* Store MCLK for next time around... */
lastClock = tmp;
lastClock = u_tmp;
/* Reset counts based on SOF counting. Expect 16ms (128 HS SOFs/16 FS SOFS) per feedback poll
* We always could 128 sofs, so 16ms @ HS, 128ms @ FS */
@@ -592,6 +572,12 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
iap_data_remaining_to_device -= 1;
}
}
else if(tmp==-1)
{
XUD_ResetEndpoint(ep_iap_from_host, null);
iap_send_reset(c_iap); // What if this happen in the middle of a send/ack?
iap_data_collected_from_device = 0;
}
break;
/* IAP IN to host */