/****************************************************************************** * Function: void USBCBSuspend(void) * * PreCondition: None * * Input: None * * Output: None * * Side Effects: None * * Overview: Call back that is invoked when a USB suspend is detected * * Note: None *****************************************************************************/ void USBCBSuspend(void) { //Example power saving code. Insert appropriate code here for the desired //application behavior. If the microcontroller will be put to sleep, a //process similar to that shown below may be used: //ConfigureIOPinsForLowPower(); //SaveStateOfAllInterruptEnableBits(); //DisableAllInterruptEnableBits(); //EnableOnlyTheInterruptsWhichWillBeUsedToWakeTheMicro(); //should enable at least USBActivityIF as a wake source //Sleep(); //RestoreStateOfAllPreviouslySavedInterruptEnableBits(); //Preferrably, this should be done in the USBCBWakeFromSuspend() function instead. //RestoreIOPinsToNormal(); //Preferrably, this should be done in the USBCBWakeFromSuspend() function instead. //IMPORTANT NOTE: Do not clear the USBActivityIF (ACTVIF) bit here. This bit is //cleared inside the usb_device.c file. Clearing USBActivityIF here will cause //things to not work as intended. #if defined(__C30__) //This function requires that the _IPL level be something other than 0. // We can set it here to something other than _IPL = 1; USBSleepOnSuspend(); #endif }
/* * USBCBSuspend */ void USBCBSuspend(void) { #if defined(__C30__) USBSleepOnSuspend(); #endif }