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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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12
Demos/Device/LowLevel/USBtoSerial/USBtoSerial.c
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@ -263,11 +263,7 @@ void CDC_Task(void)
if ((Tx_Buffer.Elements) && LineEncoding.BaudRateBPS)
{
/* Wait until Serial Tx Endpoint Ready for Read/Write */
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_WaitUntilReady();
/* Write the bytes from the buffer to the endpoint while space is available */
while (Tx_Buffer.Elements && Endpoint_IsReadWriteAllowed())
@ -287,11 +283,7 @@ void CDC_Task(void)
if (IsFull && !(Tx_Buffer.Elements))
{
/* Wait until Serial Tx Endpoint Ready for Read/Write */
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_WaitUntilReady();
/* Send an empty packet to terminate the transfer */
Endpoint_ClearIN();