From 3ae9e6042fc1ebc876e32142dde606f7890518b2 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Wed, 6 Oct 2010 10:16:02 +0000 Subject: Cache the USB_DeviceState variable internally in the library core when multiple checks are required in a single loop iteration, to reduce compiled code size. --- .../USB/HighLevel/Template/Template_Endpoint_Control_R.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'LUFA/Drivers/USB/HighLevel/Template/Template_Endpoint_Control_R.c') diff --git a/LUFA/Drivers/USB/HighLevel/Template/Template_Endpoint_Control_R.c b/LUFA/Drivers/USB/HighLevel/Template/Template_Endpoint_Control_R.c index 43abe6e1e..c8bfaeb70 100644 --- a/LUFA/Drivers/USB/HighLevel/Template/Template_Endpoint_Control_R.c +++ b/LUFA/Drivers/USB/HighLevel/Template/Template_Endpoint_Control_R.c @@ -8,13 +8,14 @@ uint8_t TEMPLATE_FUNC_NAME (void* Buffer, while (Length) { - if (Endpoint_IsSETUPReceived()) - return ENDPOINT_RWCSTREAM_HostAborted; + uint8_t USB_DeviceState_LCL = USB_DeviceState; - if (USB_DeviceState == DEVICE_STATE_Unattached) + if (USB_DeviceState_LCL == DEVICE_STATE_Unattached) return ENDPOINT_RWCSTREAM_DeviceDisconnected; - else if (USB_DeviceState == DEVICE_STATE_Suspended) + else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended) return ENDPOINT_RWCSTREAM_BusSuspended; + else if (Endpoint_IsSETUPReceived()) + return ENDPOINT_RWCSTREAM_HostAborted; if (Endpoint_IsOUTReceived()) { @@ -30,9 +31,11 @@ uint8_t TEMPLATE_FUNC_NAME (void* Buffer, while (!(Endpoint_IsINReady())) { - if (USB_DeviceState == DEVICE_STATE_Unattached) + uint8_t USB_DeviceState_LCL = USB_DeviceState; + + if (USB_DeviceState_LCL == DEVICE_STATE_Unattached) return ENDPOINT_RWCSTREAM_DeviceDisconnected; - else if (USB_DeviceState == DEVICE_STATE_Suspended) + else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended) return ENDPOINT_RWCSTREAM_BusSuspended; } -- cgit v1.2.3