Diff: nordic/nrf-sdk/nrf_temp.h

Revision:

0:eff01767de02

Child:

37:c29c330d942c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nordic/nrf-sdk/nrf_temp.h	Wed Mar 26 14:38:17 2014 +0000
@@ -0,0 +1,62 @@
+/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
+ *
+ * The information contained herein is property of Nordic Semiconductor ASA.
+ * Terms and conditions of usage are described in detail in NORDIC
+ * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
+ *
+ * Licensees are granted free, non-transferable use of the information. NO
+ * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
+ * the file.
+ *
+ */
+
+#ifndef NRF_TEMP_H__
+#define NRF_TEMP_H__
+
+#include "nordic_global.h"
+#include "nrf51.h"
+
+/**
+* @defgroup nrf_temperature TEMP (temperature) abstraction
+* @{
+* @ingroup nrf_drivers temperature_example
+* @brief Temperature module init and read functions.
+*
+*/
+
+
+
+/**
+ * @brief Function for preparing the temp module for temperature measurement.
+ *
+ * This function initializes the TEMP module and writes to the hidden configuration register.
+ * 
+ * @param none
+ */
+static __INLINE void nrf_temp_init(void)
+{
+    /**@note Workaround for PAN_028 rev2.0A anomaly 31 - TEMP: Temperature offset value has to be manually loaded to the TEMP module */
+    *(uint32_t *) 0x4000C504 = 0;
+}
+
+
+
+#define MASK_SIGN           (0x00000200UL)
+#define MASK_SIGN_EXTENSION (0xFFFFFC00UL)
+
+/**
+ * @brief Function for reading temperature measurement.
+ *
+ * The function reads the 10 bit 2's complement value and transforms it to a 32 bit 2's complement value.
+ * 
+ * @param none
+ */
+static __INLINE int32_t nrf_temp_read(void)
+{    
+    /**@note Workaround for PAN_028 rev2.0A anomaly 28 - TEMP: Negative measured values are not represented correctly */
+    return ((NRF_TEMP->TEMP & MASK_SIGN) != 0) ? (NRF_TEMP->TEMP | MASK_SIGN_EXTENSION) : (NRF_TEMP->TEMP);    
+}
+
+/** @} */
+
+#endif