Diff: targets/TARGET_ONSEMI/TARGET_NCS36510/ticker.h

Revision:

149:156823d33999

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_ONSEMI/TARGET_NCS36510/ticker.h	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,85 @@
+/**
+ ******************************************************************************
+ * @file ticker.h
+ * @brief Microcontroller uSec ticker
+ * @internal
+ * @author ON Semiconductor.
+ * $Rev:
+ * $Date:
+ ******************************************************************************
+ * Copyright 2016 Semiconductor Components Industries LLC (d/b/a “ON Semiconductor”).
+ * All rights reserved.  This software and/or documentation is licensed by ON Semiconductor
+ * under limited terms and conditions.  The terms and conditions pertaining to the software
+ * and/or documentation are available at http://www.onsemi.com/site/pdf/ONSEMI_T&C.pdf
+ * (“ON Semiconductor Standard Terms and Conditions of Sale, Section 8 Software”) and
+ * if applicable the software license agreement.  Do not use this software and/or
+ * documentation unless you have carefully read and you agree to the limited terms and
+ * conditions.  By using this software and/or documentation, you agree to the limited
+ * terms and conditions.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+ * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+ * ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL,
+ * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
+ * @endinternal
+ *
+ *
+ */
+
+#ifndef TICKER_H_
+#define TICKER_H_
+
+#include "types.h"
+
+/** Core frequency definitions.  /
+ *
+ * These definitions should be adjusted to setup Orion core frequencies.
+ */
+#define    CPU_CLOCK_ROOT_HZ           ( ( unsigned long ) 32000000) /**< <b> Orion 32MHz root frequency </b> */
+#define    CPU_CLOCK_DIV_32M           ( 1 ) /**< <b> Divider to set up core frequency at 32MHz </b> */
+#define    CPU_CLOCK_DIV_16M           ( 2 ) /**< <b> Divider to set up core frequency at 16MHz </b> */
+#define    CPU_CLOCK_DIV_8M            ( 4 ) /**< <b> Divider to set up core frequency at 8MHz </b> */
+#define    CPU_CLOCK_DIV_4M            ( 8 ) /**< <b> Divider to set up core frequency at 4MHz </b> */
+
+#define    CPU_CLOCK_DIV               CPU_CLOCK_DIV_32M /**< <b> Selected divider to be used by application code </b> */
+
+#define configCPU_CLOCK_HZ             ( ( unsigned long ) (CPU_CLOCK_ROOT_HZ/CPU_CLOCK_DIV) )
+#define configTICK_RATE_HZ             ( ( unsigned long ) 1000000 ) // 1uSec ticker rate
+
+
+/* Lowest priority */
+
+#define configKERNEL_INTERRUPT_PRIORITY         ( 0xFF )
+#define configMAX_SYSCALL_INTERRUPT_PRIORITY    ( 0x8F )
+
+#define configSYSTICK_CLOCK_HZ configCPU_CLOCK_HZ
+
+/* Constants required to manipulate the core.  Registers first... */
+#define portNVIC_SYSTICK_CTRL_REG            ( * ( ( volatile unsigned long * ) 0xe000e010 ) )
+#define portNVIC_SYSTICK_LOAD_REG            ( * ( ( volatile unsigned long * ) 0xe000e014 ) )
+#define portNVIC_SYSTICK_CURRENT_VALUE_REG   ( * ( ( volatile unsigned long * ) 0xe000e018 ) )
+#define portNVIC_INT_CTRL_REG                ( * ( ( volatile unsigned long * ) 0xe000ed04 ) )
+#define portNVIC_SYSPRI2_REG                 ( * ( ( volatile unsigned long * ) 0xe000ed20 ) )
+
+/* ...then bits in the registers. */
+#define portNVIC_SYSTICK_CLK_BIT            ( 1UL << 2UL )
+#define portNVIC_SYSTICK_INT_BIT            ( 1UL << 1UL )
+#define portNVIC_SYSTICK_ENABLE_BIT         ( 1UL << 0UL )
+#define portNVIC_SYSTICK_COUNT_FLAG_BIT     ( 1UL << 16UL )
+
+/* Orion has 4 interrupt priority bits
+ */
+#define portNVIC_SYSTICK_PRI                ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 24 )
+
+/* API definitions */
+void fSysTickInit(void);
+
+void fSysTickHandler(void);
+
+uint32_t fSysTickRead(void);
+
+void fSysTickEnableInterrupt (void);
+
+void fSysTickDisableInterrupt (void);
+#endif // TICKER_H_