usb_hw.h

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#ifndef _USB_HW_H_
#define _USB_HW_H_
 
#ifdef __cplusplus
extern "C"{
#endif
 
#include "mcu.h"
 
#define hal_ll_core_enable_int_asm asm("nop"); \
                                   asm("ei"); \
                                   asm("nop")
 
static inline void usb_hw_init(void) {
    // Set interrupt priority for USB.
    IPC33CLR = _IPC33_USBIP_MASK;
    IPC33SET = (2 << _IPC33_USBIP_POSITION);
    // Set interrupt subpriority for USB.
    IPC33CLR = _IPC33_USBIS_MASK;
    IPC33SET = (0 << _IPC33_USBIS_POSITION);
 
    // Enable interrupts for USB.
    USBCRCONbits.USBIE = 0;
    IEC4SET = _IEC4_USBIE_MASK;
    // Clear all pending interrut flags for USB.
    IFS4CLR = _IFS4_USBIF_MASK;
 
    // Enable global interrupts.
    hal_ll_core_enable_int_asm;
}
 
 // usb
 // middleware
 
#ifdef __cplusplus
}
#endif
 
#endif // _USB_HW_H_
// ------------------------------------------------------------------------- END