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Diffstat (limited to 'Demos/Device/LowLevel/CDC/CDC.c')
-rw-r--r--Demos/Device/LowLevel/CDC/CDC.c20
1 files changed, 5 insertions, 15 deletions
diff --git a/Demos/Device/LowLevel/CDC/CDC.c b/Demos/Device/LowLevel/CDC/CDC.c
index 9ee744ea04..12cd8c40f9 100644
--- a/Demos/Device/LowLevel/CDC/CDC.c
+++ b/Demos/Device/LowLevel/CDC/CDC.c
@@ -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();