Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h

Revision:

0:9b334a45a8ff

Child:

50:a417edff4437

diff -r 000000000000 -r 9b334a45a8ff targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,68 @@
+/***************************************************************************//**
+ * @file clocking.h
+ * @brief Clock selection calculations
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2015 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 "device_peripherals.h"
+
+#if( CORE_CLOCK_SOURCE == HFXO)
+#define REFERENCE_FREQUENCY HFXO_FREQUENCY
+#elif( CORE_CLOCK_SOURCE == HFRCO)
+#if( HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_1MHZ)
+#define REFERENCE_FREQUENCY 1000000
+#elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_7MHZ)
+#define REFERENCE_FREQUENCY 7000000
+#elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_11MHZ)
+#define REFERENCE_FREQUENCY 7000000
+#elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_14MHZ)
+#define REFERENCE_FREQUENCY 14000000
+#elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_21MHZ)
+#define REFERENCE_FREQUENCY 21000000
+#elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_28MHZ)
+#define REFERENCE_FREQUENCY 28000000
+#else
+#define REFERENCE_FREQUENCY 14000000
+#endif
+#endif
+
+#if ( LOW_ENERGY_CLOCK_SOURCE == LFXO )
+#define LEUART_USING_LFXO
+#if ( defined(CMU_CTRL_HFLE) && (REFERENCE_FREQUENCY > 24000000) )
+#define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 4)
+#else
+#define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 2)
+#endif
+#define LEUART_LF_REF_FREQ LFXO_FREQUENCY
+#else
+#if ( defined(CMU_CTRL_HFLE) && (REFERENCE_FREQUENCY > 24000000) )
+#define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 4)
+#else
+#define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 2)
+#endif
+#endif