--- /dev/null
+/*******************************************************************************
+ *
+ * HAL_UCS.h
+ * Provides Functions to Initialize the UCS/FLL and clock sources
+ *
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form 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.
+ *
+ * Neither the name of Texas Instruments Incorporated nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER 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.
+ *
+ * Created: Version 1.0 11/24/2009
+ * Updated: Version 2.0 12/15/2010
+ * Added Functions: XT2_Stop() and XT1_Stop()
+ *
+ ******************************************************************************/
+
+#ifndef HAL_UCS_H
+#define HAL_UCS_H
+
+#include "HAL_MACROS.h"
+
+/*******************************************************************************
+ * Macros
+ ******************************************************************************/
+
+/* Select source for FLLREF e.g. SELECT_FLLREF(SELREF__XT1CLK) */
+#define SELECT_FLLREF(source) st(UCSCTL3 = (UCSCTL3 & ~(SELREF_7)) | (source);)
+/* Select source for ACLK e.g. SELECT_ACLK(SELA__XT1CLK) */
+#define SELECT_ACLK(source) st(UCSCTL4 = (UCSCTL4 & ~(SELA_7)) | (source);)
+/* Select source for MCLK e.g. SELECT_MCLK(SELM__XT2CLK) */
+#define SELECT_MCLK(source) st(UCSCTL4 = (UCSCTL4 & ~(SELM_7)) | (source);)
+/* Select source for SMCLK e.g. SELECT_SMCLK(SELS__XT2CLK) */
+#define SELECT_SMCLK(source) st(UCSCTL4 = (UCSCTL4 & ~(SELS_7)) | (source);)
+/* Select source for MCLK and SMCLK e.g. SELECT_MCLK_SMCLK(SELM__DCOCLK + SELS__DCOCLK) */
+#define SELECT_MCLK_SMCLK(sources) st(UCSCTL4 = (UCSCTL4 & ~(SELM_7 + SELS_7)) | (sources);)
+
+/* set ACLK/x */
+#define ACLK_DIV(x) st(UCSCTL5 = (UCSCTL5 & ~(DIVA_7)) | (DIVA__##x);)
+/* set MCLK/x */
+#define MCLK_DIV(x) st(UCSCTL5 = (UCSCTL5 & ~(DIVM_7)) | (DIVM__##x);)
+/* set SMCLK/x */
+#define SMCLK_DIV(x) st(UCSCTL5 = (UCSCTL5 & ~(DIVS_7)) | (DIVS__##x);)
+/* Select divider for FLLREF e.g. SELECT_FLLREFDIV(2) */
+#define SELECT_FLLREFDIV(x) st(UCSCTL3 = (UCSCTL3 & ~(FLLREFDIV_7))|(FLLREFDIV__##x);)
+
+/*******************************************************************************
+ * Defines
+ ******************************************************************************/
+#define UCS_STATUS_OK 0
+#define UCS_STATUS_ERROR 1
+
+#if 0
+/*******************************************************************************
+ * \brief Startup routine for 32kHz Crystal on LFXT1
+ *
+ * \param xtdrive Bits defining the LFXT drive mode after startup
+ ******************************************************************************/
+extern void LFXT_Start(unsigned int xtdrive);
+#endif
+
+/*******************************************************************************
+ * \brief Startup routine for 32kHz Crystal on LFXT1 with timeout counter
+ *
+ * \param xtdrive Bits defining the LFXT drive mode after startup
+ * \param timeout Value for the timeout counter
+ ******************************************************************************/
+extern unsigned int LFXT_Start_Timeout(unsigned int xtdrive, unsigned int timeout);
+
+#if 0
+/*******************************************************************************
+ * \brief Startup routine for XT1
+ *
+ * \param xtdrive Bits defining the XT drive mode
+ ******************************************************************************/
+extern void XT1_Start(unsigned int xtdrive);
+
+/*******************************************************************************
+ * \brief Startup routine for XT1 with timeout counter
+ *
+ * \param xtdrive Bits defining the XT drive mode
+ * \param timeout Value for the timeout counter
+ ******************************************************************************/
+extern unsigned int XT1_Start_Timeout(unsigned int xtdrive, unsigned int timeout);
+
+/*******************************************************************************
+ * \brief Use XT1 in Bypasss mode
+ ******************************************************************************/
+extern void XT1_Bypass(void);
+
+#endif
+
+/*******************************************************************************
+ * \brief Stop XT1 oscillator
+ ******************************************************************************/
+extern void XT1_Stop(void);
+
+#if 0
+/*******************************************************************************
+ * \brief Startup routine for XT2
+ *
+ * \param xtdrive Bits defining the XT drive mode
+ ******************************************************************************/
+extern void XT2_Start(unsigned int xtdrive);
+
+/*******************************************************************************
+ * \brief Startup routine for XT2 with timeout counter
+ *
+ * \param xtdrive Bits defining the XT drive mode
+ * \param timeout Value for the timeout counter
+ ******************************************************************************/
+extern unsigned int XT2_Start_Timeout(unsigned int xtdrive, unsigned int timeout);
+
+/*******************************************************************************
+ * \brief Use XT2 in Bypasss mode for MCLK
+ ******************************************************************************/
+extern void XT2_Bypass(void);
+
+/*******************************************************************************
+ * \brief Stop XT2 oscillator
+ ******************************************************************************/
+extern void XT2_Stop(void);
+
+#endif
+
+/*******************************************************************************
+ * \brief Initializes FLL of the UCS and wait till settled before allowing
+ * code execution to resume. The use of this function is preferred
+ * over the use of Init_FLL().
+ *
+ * \param fsystem Required system frequency (MCLK) in kHz
+ * \param ratio Ratio between fsystem and FLLREFCLK
+ ******************************************************************************/
+extern void Init_FLL_Settle(unsigned int fsystem, unsigned int ratio);
+
+
+#endif /* HAL_UCS_H */
projects / oswald.git / blobdiff