Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_system.c

Revision:

0:9b334a45a8ff

Child:

50:a417edff4437

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_system.c	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,119 @@
+/***************************************************************************//**
+ * @file em_system.c
+ * @brief System Peripheral API
+ * @version 3.20.12
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2014 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
+ * obligation to support this Software. Silicon Labs is providing the
+ * Software "AS IS", with no express or implied warranties of any kind,
+ * including, but not limited to, any implied warranties of merchantability
+ * or fitness for any particular purpose or warranties against infringement
+ * of any proprietary rights of a third party.
+ *
+ * Silicon Labs will not be liable for any consequential, incidental, or
+ * special damages, or any other relief, or for any claim by any third party,
+ * arising from your use of this Software.
+ *
+ ******************************************************************************/
+
+
+#include "em_system.h"
+#include "em_assert.h"
+
+/***************************************************************************//**
+ * @addtogroup EM_Library
+ * @{
+ ******************************************************************************/
+
+/***************************************************************************//**
+ * @addtogroup SYSTEM
+ * @brief System Peripheral API
+ * @{
+ ******************************************************************************/
+
+/*******************************************************************************
+ **************************   GLOBAL FUNCTIONS   *******************************
+ ******************************************************************************/
+
+/***************************************************************************//**
+ * @brief
+ *   Get chip major/minor revision.
+ *
+ * @param[out] rev
+ *   Location to place chip revision info.
+ ******************************************************************************/
+void SYSTEM_ChipRevisionGet(SYSTEM_ChipRevision_TypeDef *rev)
+{
+  uint8_t tmp;
+
+  EFM_ASSERT(rev);  
+  
+  /* CHIP FAMILY bit [5:2] */
+  tmp  = (((ROMTABLE->PID1 & _ROMTABLE_PID1_FAMILYMSB_MASK) >> _ROMTABLE_PID1_FAMILYMSB_SHIFT) << 2);           
+  /* CHIP FAMILY bit [1:0] */
+  tmp |=  ((ROMTABLE->PID0 & _ROMTABLE_PID0_FAMILYLSB_MASK) >> _ROMTABLE_PID0_FAMILYLSB_SHIFT);                 
+  rev->family = tmp;
+
+  /* CHIP MAJOR bit [3:0] */
+  rev->major = (ROMTABLE->PID0 & _ROMTABLE_PID0_REVMAJOR_MASK) >> _ROMTABLE_PID0_REVMAJOR_SHIFT;                
+
+  /* CHIP MINOR bit [7:4] */
+  tmp  = (((ROMTABLE->PID2 & _ROMTABLE_PID2_REVMINORMSB_MASK) >> _ROMTABLE_PID2_REVMINORMSB_SHIFT) << 4);  
+  /* CHIP MINOR bit [3:0] */
+  tmp |=  ((ROMTABLE->PID3 & _ROMTABLE_PID3_REVMINORLSB_MASK) >> _ROMTABLE_PID3_REVMINORLSB_SHIFT);             
+  rev->minor = tmp;
+}
+
+/***************************************************************************//**
+ * @brief
+ *    Get factory calibration value for a given peripheral register.
+ *
+ * @param[in] regAddress
+ *    Address of register to get a calibration value for.
+ *
+ * @return
+ *    Calibration value for the requested register.
+ ******************************************************************************/
+uint32_t SYSTEM_GetCalibrationValue(volatile uint32_t *regAddress)
+{
+  int               regCount;
+  CALIBRATE_TypeDef *p;
+
+  regCount = 1;
+  p        = CALIBRATE;
+
+  for (;; )
+  {
+    if ((regCount > CALIBRATE_MAX_REGISTERS) ||
+        (p->VALUE == 0xFFFFFFFF))
+    {
+      EFM_ASSERT(false);
+      return 0;                 /* End of device calibration table reached. */
+    }
+
+    if (p->ADDRESS == (uint32_t)regAddress)
+    {
+      return p->VALUE;          /* Calibration value found ! */
+    }
+
+    p++;
+    regCount++;
+  }
+}
+
+/** @} (end addtogroup SYSTEM) */
+/** @} (end addtogroup EM_Library) */