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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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28
Demos/Device/LowLevel/MassStorage/Lib/DataflashManager.c
View file

@ -68,11 +68,8 @@ void DataflashManager_WriteBlocks(const uint32_t BlockAddress, uint16_t TotalBlo
Dataflash_SendAddressBytes(0, CurrDFPageByte);
/* Wait until endpoint is ready before continuing */
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
if (Endpoint_WaitUntilReady())
return;
while (TotalBlocks)
{
@ -88,11 +85,8 @@ void DataflashManager_WriteBlocks(const uint32_t BlockAddress, uint16_t TotalBlo
Endpoint_ClearOUT();
/* Wait until the host has sent another packet */
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
if (Endpoint_WaitUntilReady())
return;
}
/* Check if end of dataflash page reached */
@ -203,11 +197,8 @@ void DataflashManager_ReadBlocks(const uint32_t BlockAddress, uint16_t TotalBloc
Dataflash_SendByte(0x00);
/* Wait until endpoint is ready before continuing */
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
if (Endpoint_WaitUntilReady())
return;
while (TotalBlocks)
{
@ -223,11 +214,8 @@ void DataflashManager_ReadBlocks(const uint32_t BlockAddress, uint16_t TotalBloc
Endpoint_ClearIN();
/* Wait until the endpoint is ready for more data */
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
if (Endpoint_WaitUntilReady())
return;
}
/* Check if end of dataflash page reached */

2
Demos/Device/LowLevel/MassStorage/MassStorage.h
View file

@ -64,7 +64,7 @@
/** Total number of Logical Units (drives) in the device. The total device capacity is shared equally between
* each drive - this can be set to any positive non-zero amount.
*/
#define TOTAL_LUNS 2
#define TOTAL_LUNS 1
/** Blocks in each LUN, calculated from the total capacity divided by the total number of Logical Units in the device. */
#define LUN_MEDIA_BLOCKS (VIRTUAL_MEMORY_BLOCKS / TOTAL_LUNS)