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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.

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
View File

@ -69,11 +69,8 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
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)
{
@ -89,11 +86,8 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
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 */
@ -205,11 +199,8 @@ void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, con
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)
{
@ -225,11 +216,8 @@ void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, con
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/ClassDriver/MassStorage/MassStorage.h
View File

@ -70,7 +70,7 @@
#define LEDMASK_USB_BUSY (LEDS_LED2)
/** Total number of logical drives within the device - must be non-zero. */
#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)

20
Demos/Device/LowLevel/CDC/CDC.c
View File

@ -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();

12
Demos/Device/LowLevel/DualCDC/DualCDC.c
View File

@ -274,11 +274,7 @@ void CDC1_Task(void)
Endpoint_ClearIN();
/* 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();
@ -329,11 +325,7 @@ void CDC2_Task(void)
Endpoint_ClearIN();
/* Wait until the endpoint is ready for the next packet */
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_WaitUntilReady();
/* Send an empty packet to prevent host buffering */
Endpoint_ClearIN();

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)

12
Demos/Device/LowLevel/USBtoSerial/USBtoSerial.c
View File

@ -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();

14
LUFA/Drivers/USB/Class/Device/CDC.c
View File

@ -126,12 +126,7 @@ void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo)
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_WaitUntilReady();
}
Endpoint_ClearIN();
@ -156,12 +151,7 @@ void CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, con
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
while (!(Endpoint_IsReadWriteAllowed()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_WaitUntilReady();
}
Endpoint_Write_Byte(Data);

4
LUFA/Drivers/USB/HighLevel/USBInterrupt.c
View File

@ -223,7 +223,7 @@ ISR(USB_GEN_vect, ISR_BLOCK)
}
#if defined(INTERRUPT_CONTROL_ENDPOINT)
ISR(USB_COM_vect, ISR_NOBLOCK)
ISR(USB_COM_vect, ISR_BLOCK)
{
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
@ -231,6 +231,6 @@ ISR(USB_COM_vect, ISR_NOBLOCK)
USB_INT_Clear(USB_INT_ENDPOINT_SETUP);
Endpoint_SelectEndpoint(PrevSelectedEndpoint);
Endpoint_SelectEndpoint(PrevSelectedEndpoint);
}
#endif