/******************************************************************** * Function: void main(void) * * PreCondition: None * * Input: None * * Output: None * * Side Effects: None * * Overview: Main program entry point. * * Note: None *******************************************************************/ MAIN_RETURN main(void) { SYSTEM_Initialize(SYSTEM_STATE_USB_START); USBDeviceInit(); USBDeviceAttach(); setup(); while(1) { SYSTEM_Tasks(); #if defined(USB_POLLING) // Interrupt or polling method. If using polling, must call // this function periodically. This function will take care // of processing and responding to SETUP transactions // (such as during the enumeration process when you first // plug in). USB hosts require that USB devices should accept // and process SETUP packets in a timely fashion. Therefore, // when using polling, this function should be called // regularly (such as once every 1.8ms or faster** [see // inline code comments in usb_device.c for explanation when // "or faster" applies]) In most cases, the USBDeviceTasks() // function does not take very long to execute (ex: <100 // instruction cycles) before it returns. USBDeviceTasks(); #endif //Application specific tasks APP_DeviceCDCBasicDemoTasks(); }//end while }//end main
/******************************************************************** * Function: void main(void) * * PreCondition: None * * Input: None * * Output: None * * Side Effects: None * * Overview: Main program entry point. * * Note: None *******************************************************************/ MAIN_RETURN main(void) { SYSTEM_Initialize(SYSTEM_STATE_USB_START); USBDeviceInit(); USBDeviceAttach(); while(1) { SYSTEM_Tasks(); #if defined(USB_POLLING) // Interrupt or polling method. If using polling, must call // this function periodically. This function will take care // of processing and responding to SETUP transactions // (such as during the enumeration process when you first // plug in). USB hosts require that USB devices should accept // and process SETUP packets in a timely fashion. Therefore, // when using polling, this function should be called // regularly (such as once every 1.8ms or faster** [see // inline code comments in usb_device.c for explanation when // "or faster" applies]) In most cases, the USBDeviceTasks() // function does not take very long to execute (ex: <100 // instruction cycles) before it returns. USBDeviceTasks(); #endif /* If the USB device isn't configured yet, we can't really do anything * else since we don't have a host to talk to. So jump back to the * top of the while loop. */ if( USBGetDeviceState() < CONFIGURED_STATE ) { /* Jump back to the top of the while loop. */ continue; } /* If we are currently suspended, then we need to see if we need to * issue a remote wakeup. In either case, we shouldn't process any * keyboard commands since we aren't currently communicating to the host * thus just continue back to the start of the while loop. */ if( USBIsDeviceSuspended()== true ) { /* Jump back to the top of the while loop. */ continue; } //Application specific tasks APP_DeviceCDCBasicDemoTasks(); }//end while }//end main