1 files changed, 98 insertions, 0 deletions
diff --git a/hw/mcu/nordic/nrf52/hal/hal_nrf52.c b/hw/mcu/nordic/nrf52/hal/hal_nrf52.c
new file mode 100644
index 000000000..4e531bf27
--- /dev/null
+++ b/hw/mcu/nordic/nrf52/hal/hal_nrf52.c
@@ -0,0 +1,98 @@
+/**************************************************************************/
+/*!
+    @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 hal_usb_init(void)
+{
+
+}
+
+void hal_usb_int_enable(uint8_t port)
+{
+  (void) port;
+  NVIC_EnableIRQ(USBD_IRQn);
+}
+
+void hal_usb_int_disable(uint8_t port)
+{
+  (void) port;
+  NVIC_DisableIRQ(USBD_IRQn);
+}
+
+uint32_t hal_tick_get(void)
+{
+  //#define tick2ms(tck)         ( ( ((uint64_t)(tck)) * 1000) / configTICK_RATE_HZ )
+  //return tick2ms( app_timer_cnt_get() );
+
+  return system_ticks;
+}
+
+void hal_debugger_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
+}