Diff: targets/TARGET_NORDIC/TARGET_NRF5/common_rtc.h

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NORDIC/TARGET_NRF5/common_rtc.h	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,57 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef COMMON_RTC_H
+#define COMMON_RTC_H
+
+#include "nrf_rtc.h"
+
+#define RTC_COUNTER_BITS        24u
+
+// Instance 0 is reserved for SoftDevice.
+// Instance 1 is used as a common one for us_ticker, lp_ticker and (in case
+// of NRF51) as an alternative tick source for RTOS.
+// ["us_ticker.c" uses hard coded addresses of the 'NRF_RTC1->EVENT_COMPARE[1]'
+//  register in inline assembly implementations of COMMON_RTC_IRQ_HANDLER,
+//  please remember to update those in case of doing changes here]
+#define COMMON_RTC_INSTANCE     NRF_RTC1
+#define COMMON_RTC_IRQ_HANDLER  RTC1_IRQHandler
+#define US_TICKER_CC_CHANNEL    0
+#define OS_TICK_CC_CHANNEL      1
+#define LP_TICKER_CC_CHANNEL    2
+
+#define COMMON_RTC_EVENT_COMPARE(channel) \
+    CONCAT_2(NRF_RTC_EVENT_COMPARE_, channel)
+#define COMMON_RTC_INT_COMPARE_MASK(channel) \
+    CONCAT_3(NRF_RTC_INT_COMPARE, channel, _MASK)
+
+#define US_TICKER_EVENT     COMMON_RTC_EVENT_COMPARE(US_TICKER_CC_CHANNEL)
+#define US_TICKER_INT_MASK  COMMON_RTC_INT_COMPARE_MASK(US_TICKER_CC_CHANNEL)
+#define OS_TICK_EVENT       COMMON_RTC_EVENT_COMPARE(OS_TICK_CC_CHANNEL)
+#define OS_TICK_INT_MASK    COMMON_RTC_INT_COMPARE_MASK(OS_TICK_CC_CHANNEL)
+#define LP_TICKER_EVENT     COMMON_RTC_EVENT_COMPARE(LP_TICKER_CC_CHANNEL)
+#define LP_TICKER_INT_MASK  COMMON_RTC_INT_COMPARE_MASK(LP_TICKER_CC_CHANNEL)
+
+extern bool              m_common_rtc_enabled;
+extern uint32_t volatile m_common_rtc_overflows;
+
+void     common_rtc_init(void);
+uint32_t common_rtc_32bit_ticks_get(void);
+uint64_t common_rtc_64bit_us_get(void);
+void     common_rtc_set_interrupt(uint32_t us_timestamp, uint32_t cc_channel,
+                                  uint32_t int_mask);
+
+#endif // COMMON_RTC_H