#ifndef CORE_USB_USB_COMMON
#define CORE_USB_USB_COMMON

#include "usb_common_types.h"
#include "usb_device_types.h"

#define USB_DELAY(t) for (uint64_t i = 0; i < (t) * 10000; i++) { asm("nop"); } ///< Create a delay that does not relay on the processor ticks.

#define READ_FIELD(r,f) (((r) & (f##_Msk)) >> (f##_Pos)) ///< Read a named field of a register
#define WRITE_FIELD(r,f,v) ((r) = ((r) & ~(f##_Msk)) | (v << (f##_Pos))) ///< Write a name field of a register
#define WAIT_FOR_BIT(r,b) while ((r) & (b)) {} ///< Wait for a bit to clear
#define WAIT_FOR_BIT_DELAY(r,b,d) while ((r) & (b)) { USB_DELAY((d)); } ///< Wait for a bit to clear with injected delay
#define WAIT_FOR_nBIT(r,b) while (!((r) & (b))) {} ///< Wait for a bit to set
#define WAIT_FOR_nBIT_DELAY(r,b,d) while (!((r) & (b))) { USB_DELAY((d)); } ///< Wait for a bit to set with injected delay

#define DWORD_ALIGN __attribute__((aligned(4))) ///< Declare a 32-bit aligned memory area

#define CEILDIV4(x) (((x) + 3) >> 2) ///< Integer division by four after rounding up to the nearest multiple of 4
#define CEIL4(x) (((x) + 3) & (~0b11)) ///< Round up to the closest multiple of 4

#endif /* CORE_USB_USB_COMMON */