1 files changed, 127 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/infineon/pal/nrf5x/pal_os_event.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/infineon/pal/nrf5x/pal_os_event.c
new file mode 100644
index 0000000..809c2bd
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/infineon/pal/nrf5x/pal_os_event.c
@@ -0,0 +1,127 @@
+/**
+* \copyright
+* Copyright(c) 2018, Infineon Technologies AG
+* All rights reserved.
+*
+* This software is provided with terms and conditions as specified in OPTIGA(TM) Trust X Evaluation Kit License Agreement.
+* \endcopyright
+*
+* \author Infineon AG
+*
+* \file
+*
+* \brief This file implements the platform abstraction layer APIs for os event/scheduler.
+*
+* \addtogroup  grPAL
+* @{
+*/
+
+/**********************************************************************************************************************
+ * HEADER FILES
+ *********************************************************************************************************************/
+#include "stdlib.h"
+#include "stdio.h"
+#include "pal_os_event.h"
+#include "nrf_rtc.h"
+#include "nrf_drv_rtc.h"
+
+/**********************************************************************************************************************
+ * MACROS
+ *********************************************************************************************************************/
+
+/*********************************************************************************************************************
+ * LOCAL DATA
+ *********************************************************************************************************************/
+/// @cond hidden 
+/// Callback function when timer elapses
+static volatile register_callback callback_registered = NULL;
+/// Pointer to store upper layer callback context (For example: Ifx i2c context)
+static void * callback_ctx;
+
+const nrf_drv_rtc_t rtc2 = NRF_DRV_RTC_INSTANCE(2);
+static nrf_drv_rtc_config_t m_rtc2_config = NRF_DRV_RTC_DEFAULT_CONFIG;
+
+// Tick count for pal_os_timer
+volatile uint32_t g_tick_count = 0;
+
+/**
+*  Timer callback handler. 
+*
+*  This get called from the TIMER elapse event.<br>
+*  Once the timer expires, the registered callback funtion gets called from the timer event handler, if
+*  the call back is not NULL.<br>
+*
+*\param[in] args Callback argument
+*
+*/
+static void ifx_rtc_handler(nrf_drv_rtc_int_type_t int_type)
+{
+    volatile register_callback callback;
+
+    if (int_type == NRF_DRV_RTC_INT_TICK)
+    {
+        g_tick_count++;
+    }
+
+    if (int_type == NRF_DRV_RTC_INT_COMPARE0)
+    {
+        nrf_drv_rtc_cc_disable(&rtc2, 0);
+
+        if (callback_registered != NULL)
+        {
+            callback = callback_registered;
+            callback_registered = NULL;
+            callback(callback_ctx);
+        }
+    }
+}
+
+/// @endcond
+
+void pal_os_event_init()
+{
+    // Initialize the RTC2 driver instance
+    APP_ERROR_CHECK(nrf_drv_rtc_init(&rtc2, &m_rtc2_config, ifx_rtc_handler));
+
+    // Set the prescaler to approximately get 1 ms intervals
+    m_rtc2_config.prescaler = 31;
+
+    // Enable tick event and interrupt
+    nrf_drv_rtc_tick_enable(&rtc2, true);
+
+    // Power on RTC instance
+    nrf_drv_rtc_enable(&rtc2);
+}
+
+/**
+* Platform specific event call back registration function to trigger once when timer expires.
+* <br>
+*
+* <b>API Details:</b>
+*         This function registers the callback function supplied by the caller.<br>
+*         It triggers a timer with the supplied time interval in microseconds.<br>
+*         Once the timer expires, the registered callback function gets called.<br>
+* 
+* \param[in] callback              Callback function pointer
+* \param[in] callback_args         Callback arguments
+* \param[in] time_us               time in micro seconds to trigger the call back
+*
+*/
+void pal_os_event_register_callback_oneshot(register_callback callback, 
+                                            void* callback_args, 
+                                            uint32_t time_us)
+{
+    callback_registered = callback;
+    callback_ctx = callback_args;
+
+    // Clear the counter
+    nrf_drv_rtc_counter_clear(&rtc2);
+
+    // Set the compare register to trigger approximately at time_us
+    APP_ERROR_CHECK(nrf_drv_rtc_cc_set(&rtc2, 0, (time_us / 1024) + 1 , true));
+}
+
+/**
+* @}
+*/
+