rtc, keeping time

1 files changed, 175 insertions, 0 deletions

diff --git a/drivers_nrf/wdt/nrf_drv_wdt.c b/drivers_nrf/wdt/nrf_drv_wdt.c
new file mode 100644
index 0000000..be5baaf
--- /dev/null
+++ b/drivers_nrf/wdt/nrf_drv_wdt.c
@@ -0,0 +1,175 @@
+/**
+ * Copyright (c) 2015 - 2017, Nordic Semiconductor ASA
+ * 
+ * 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, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, 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 Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS 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 "sdk_common.h"
+#if NRF_MODULE_ENABLED(WDT)
+#include "nrf_drv_wdt.h"
+#include "nrf_drv_common.h"
+#include "nrf_error.h"
+#include "nrf_assert.h"
+#include "nrf_wdt.h"
+#include "app_util_platform.h"
+#include <stdbool.h>
+#include <stdint.h>
+
+#define NRF_LOG_MODULE_NAME "WDT"
+
+#if WDT_CONFIG_LOG_ENABLED
+#define NRF_LOG_LEVEL       WDT_CONFIG_LOG_LEVEL
+#define NRF_LOG_INFO_COLOR  WDT_CONFIG_INFO_COLOR
+#define NRF_LOG_DEBUG_COLOR WDT_CONFIG_DEBUG_COLOR
+#else //WDT_CONFIG_LOG_ENABLED
+#define NRF_LOG_LEVEL       0
+#endif //WDT_CONFIG_LOG_ENABLED
+#include "nrf_log.h"
+#include "nrf_log_ctrl.h"
+
+
+/**@brief WDT event handler. */
+static nrf_wdt_event_handler_t m_wdt_event_handler;
+
+/**@brief WDT state. */
+static nrf_drv_state_t m_state;
+
+/**@brief WDT alloc table. */
+static uint32_t m_alloc_index;
+
+static const nrf_drv_wdt_config_t m_default_config = NRF_DRV_WDT_DEAFULT_CONFIG;
+
+/**@brief WDT interrupt handler. */
+void WDT_IRQHandler(void)
+{
+    if (nrf_wdt_int_enable_check(NRF_WDT_INT_TIMEOUT_MASK) == true)
+    {
+        nrf_wdt_event_clear(NRF_WDT_EVENT_TIMEOUT);
+        m_wdt_event_handler();
+    }
+}
+
+
+ret_code_t nrf_drv_wdt_init(nrf_drv_wdt_config_t const * p_config,
+                            nrf_wdt_event_handler_t     wdt_event_handler)
+{
+    ASSERT(wdt_event_handler != NULL);
+    ret_code_t err_code;
+    m_wdt_event_handler = wdt_event_handler;
+
+    if (m_state == NRF_DRV_STATE_UNINITIALIZED)
+    {
+        m_state = NRF_DRV_STATE_INITIALIZED;
+    }
+    else
+    {
+        err_code = NRF_ERROR_INVALID_STATE;
+        NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
+        return err_code;
+    }
+
+    if (p_config == NULL)
+    {
+        p_config = &m_default_config;
+    }
+
+    nrf_wdt_behaviour_set(p_config->behaviour);
+
+
+
+
+
+
+
+    nrf_wdt_reload_value_set((p_config->reload_value * 32768) / 1000);
+
+    nrf_drv_common_irq_enable(WDT_IRQn, p_config->interrupt_priority);
+
+    err_code = NRF_SUCCESS;
+    NRF_LOG_INFO("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+void nrf_drv_wdt_enable(void)
+{
+    ASSERT(m_alloc_index != 0);
+    ASSERT(m_state == NRF_DRV_STATE_INITIALIZED);
+    nrf_wdt_int_enable(NRF_WDT_INT_TIMEOUT_MASK);
+    nrf_wdt_task_trigger(NRF_WDT_TASK_START);
+    m_state = NRF_DRV_STATE_POWERED_ON;
+    NRF_LOG_INFO("Enabled.\r\n");
+}
+
+
+void nrf_drv_wdt_feed(void)
+{
+    ASSERT(m_state == NRF_DRV_STATE_POWERED_ON);
+    for (uint32_t i = 0; i < m_alloc_index; i++)
+    {
+        nrf_wdt_reload_request_set((nrf_wdt_rr_register_t)(NRF_WDT_RR0 + i));
+    }
+}
+
+ret_code_t nrf_drv_wdt_channel_alloc(nrf_drv_wdt_channel_id * p_channel_id)
+{
+    ret_code_t result;
+    ASSERT(p_channel_id);
+    ASSERT(m_state == NRF_DRV_STATE_INITIALIZED);
+
+    CRITICAL_REGION_ENTER();
+    if (m_alloc_index < NRF_WDT_CHANNEL_NUMBER)
+    {
+        *p_channel_id = (nrf_drv_wdt_channel_id)(NRF_WDT_RR0 + m_alloc_index);
+        m_alloc_index++;
+        nrf_wdt_reload_request_enable(*p_channel_id);
+        result = NRF_SUCCESS;
+    }
+    else
+    {
+        result = NRF_ERROR_NO_MEM;
+    }
+    CRITICAL_REGION_EXIT();
+    NRF_LOG_INFO("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(result));
+    return result;
+}
+
+void nrf_drv_wdt_channel_feed(nrf_drv_wdt_channel_id channel_id)
+{
+    ASSERT(m_state == NRF_DRV_STATE_POWERED_ON);
+    nrf_wdt_reload_request_set(channel_id);
+}
+#endif //NRF_MODULE_ENABLED(WDT)