contrib/firmware/angie/c/include/delay.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /****************************************************************
   3     File : delay.h                                              *
   4     Contents : Delays handling header file for NanoXplore       *
   5     USB-JTAG ANGIE adapter hardware.                            *
   6     Based on openULINK project code by: Martin Schmoelzer.      *
   7     Copyright 2023, Ahmed Errached BOUDJELIDA, NanoXplore SAS.  *
   8     <aboudjelida@nanoxplore.com>                                *
   9     <ahmederrachedbjld@gmail.com>                               *
  10 *****************************************************************/
  11
  12 #ifndef __DELAY_H
  13 #define __DELAY_H
  14
  15 #include <stdint.h>
  16
  17 void syncdelay(uint8_t count);
  18 void delay_5us(void);
  19 void delay_1ms(void);
  20 void delay_us(uint16_t delay);
  21 void delay_ms(uint16_t delay);
  22
  23 #ifndef _IFREQ
  24 #define _IFREQ 48000   /* IFCLK frequency in kHz */
  25 #endif
  26
  27 /* CFREQ can be any one of: 48000, 24000, or 12000 */
  28 #ifndef _CFREQ
  29 #define _CFREQ 48000   /* CLKOUT frequency in kHz */
  30 #endif
  31
  32 #if (_IFREQ < 5000)
  33 #error "_IFREQ too small!  Valid Range: 5000 to 48000..."
  34 #endif
  35
  36 #if (_IFREQ > 48000)
  37 #error "_IFREQ too large!  Valid Range: 5000 to 48000..."
  38 #endif
  39
  40 #if (_CFREQ != 48000)
  41 #if (_CFREQ != 24000)
  42 #if (_CFREQ != 12000)
  43 #error "_CFREQ invalid!  Valid values: 48000, 24000, 12000..."
  44 #endif
  45 #endif
  46 #endif
  47
  48 /* Synchronization Delay formula: see TRM section 15-14 */
  49 #define _SCYCL (3 * (_CFREQ) + 5 * (_IFREQ) - 1) / (2 * (_IFREQ))
  50 #endif