tinyUSB/hw/mcu/nordic/nrf52/hal/hal_nrf52.c

/**************************************************************************/
/*!
    @file     hal_nrf52.c
    @author   hathach

    @section LICENSE

    Software License Agreement (BSD License)

    Copyright (c) 2018, hathach (tinyusb.org)
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
    1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
    3. Neither the name of the copyright holders nor the
    names of its contributors may be used to endorse or promote products
    derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**************************************************************************/

#include <stdbool.h>
#include "nrf.h"
#include "nrf_gpio.h"
#include "nrf_drv_systick.h"

/*------------------------------------------------------------------*/
/* MACRO TYPEDEF CONSTANT ENUM
 *------------------------------------------------------------------*/


/*------------------------------------------------------------------*/
/* VARIABLE DECLARATION
 *------------------------------------------------------------------*/

/*------------------------------------------------------------------*/
/* FUNCTION DECLARATION
 *------------------------------------------------------------------*/

volatile uint32_t system_ticks = 0;

void SysTick_Handler (void)
{
  system_ticks++;
}


bool tusb_hal_init(void)
{

}

void tusb_hal_init_enable(uint8_t port)
{
  (void) port;
  NVIC_EnableIRQ(USBD_IRQn);
}

void tusb_hal_init_disable(uint8_t port)
{
  (void) port;
  NVIC_DisableIRQ(USBD_IRQn);
}

uint32_t tusb_hal_tick_get(void)
{
  //#define tick2ms(tck)         ( ( ((uint64_t)(tck)) * 1000) / configTICK_RATE_HZ )
  //return tick2ms( app_timer_cnt_get() );

  return system_ticks;
}

void tusb_hal_dbg_breakpoint(void)
{
  // M0 cannot check if debugger is attached or not
#if defined(__CORTEX_M) && (__CORTEX_M > 0)
  // check if debugger is attached
  if ( (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) == CoreDebug_DHCSR_C_DEBUGEN_Msk)
  {
    __asm("BKPT #0\n");
  }
#endif
}