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Changed over manual loops waiting for endpoints to be ready to use the library Endpoint_WaitUntilReady() function for robustness. Fixes issues with terminated transfers on the host locking up USB devices.

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This commit is contained in:
Dean Camera
2009-08-05 09:37:45 +00:00
parent 4b35dd1670
commit a9d5e129b7
9 changed files with 31 additions and 91 deletions
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20
Demos/Device/LowLevel/CDC/CDC.c
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@@ -62,11 +62,8 @@ static int CDC_putchar(char c, FILE *stream)
if (!(LineEncoding.BaudRateBPS))
return -1;
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState != DEVICE_STATE_Configured)
return -1;
}
if (Endpoint_WaitUntilReady())
return -1;
Endpoint_Write_Byte(c);
Endpoint_ClearIN();
@@ -85,11 +82,8 @@ static int CDC_getchar(FILE *stream)
for (;;)
{
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState != DEVICE_STATE_Configured)
return -1;
}
if (Endpoint_WaitUntilReady())
return -1;
if (!(Endpoint_BytesInEndpoint()))
{
@@ -327,11 +321,7 @@ void CDC_Task(void)
if (IsFull)
{
/* Wait until the endpoint is ready for another packet */
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_WaitUntilReady();
/* Send an empty packet to ensure that the host does not buffer data sent to it */
Endpoint_ClearIN();