mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Dependents:   hello SerialTestv11 SerialTestv12 Sierpinski ... more

mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_NCS36510/TOOLCHAIN_GCC_ARM/ticker.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 171:3a7713b1edbc 1 /**
AnnaBridge 171:3a7713b1edbc 2 ******************************************************************************
AnnaBridge 171:3a7713b1edbc 3 * @file ticker.h
AnnaBridge 171:3a7713b1edbc 4 * @brief Microcontroller uSec ticker
AnnaBridge 171:3a7713b1edbc 5 * @internal
AnnaBridge 171:3a7713b1edbc 6 * @author ON Semiconductor.
AnnaBridge 171:3a7713b1edbc 7 * $Rev:
AnnaBridge 171:3a7713b1edbc 8 * $Date:
AnnaBridge 171:3a7713b1edbc 9 ******************************************************************************
AnnaBridge 171:3a7713b1edbc 10 * Copyright 2016 Semiconductor Components Industries LLC (d/b/a “ON Semiconductor”).
AnnaBridge 171:3a7713b1edbc 11 * All rights reserved. This software and/or documentation is licensed by ON Semiconductor
AnnaBridge 171:3a7713b1edbc 12 * under limited terms and conditions. The terms and conditions pertaining to the software
AnnaBridge 171:3a7713b1edbc 13 * and/or documentation are available at http://www.onsemi.com/site/pdf/ONSEMI_T&C.pdf
AnnaBridge 171:3a7713b1edbc 14 * (“ON Semiconductor Standard Terms and Conditions of Sale, Section 8 Software”) and
AnnaBridge 171:3a7713b1edbc 15 * if applicable the software license agreement. Do not use this software and/or
AnnaBridge 171:3a7713b1edbc 16 * documentation unless you have carefully read and you agree to the limited terms and
AnnaBridge 171:3a7713b1edbc 17 * conditions. By using this software and/or documentation, you agree to the limited
AnnaBridge 171:3a7713b1edbc 18 * terms and conditions.
AnnaBridge 171:3a7713b1edbc 19 *
AnnaBridge 171:3a7713b1edbc 20 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
AnnaBridge 171:3a7713b1edbc 21 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
AnnaBridge 171:3a7713b1edbc 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
AnnaBridge 171:3a7713b1edbc 23 * ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL,
AnnaBridge 171:3a7713b1edbc 24 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
AnnaBridge 171:3a7713b1edbc 25 * @endinternal
AnnaBridge 171:3a7713b1edbc 26 *
AnnaBridge 171:3a7713b1edbc 27 *
AnnaBridge 171:3a7713b1edbc 28 */
AnnaBridge 171:3a7713b1edbc 29
AnnaBridge 171:3a7713b1edbc 30 #ifndef TICKER_H_
AnnaBridge 171:3a7713b1edbc 31 #define TICKER_H_
AnnaBridge 171:3a7713b1edbc 32
AnnaBridge 171:3a7713b1edbc 33 #include "types.h"
AnnaBridge 171:3a7713b1edbc 34
AnnaBridge 171:3a7713b1edbc 35 /** Core frequency definitions. /
AnnaBridge 171:3a7713b1edbc 36 *
AnnaBridge 171:3a7713b1edbc 37 * These definitions should be adjusted to setup Orion core frequencies.
AnnaBridge 171:3a7713b1edbc 38 */
AnnaBridge 171:3a7713b1edbc 39 #define CPU_CLOCK_ROOT_HZ ( ( unsigned long ) 32000000) /**< <b> Orion 32MHz root frequency </b> */
AnnaBridge 171:3a7713b1edbc 40 #define CPU_CLOCK_DIV_32M ( 1 ) /**< <b> Divider to set up core frequency at 32MHz </b> */
AnnaBridge 171:3a7713b1edbc 41 #define CPU_CLOCK_DIV_16M ( 2 ) /**< <b> Divider to set up core frequency at 16MHz </b> */
AnnaBridge 171:3a7713b1edbc 42 #define CPU_CLOCK_DIV_8M ( 4 ) /**< <b> Divider to set up core frequency at 8MHz </b> */
AnnaBridge 171:3a7713b1edbc 43 #define CPU_CLOCK_DIV_4M ( 8 ) /**< <b> Divider to set up core frequency at 4MHz </b> */
AnnaBridge 171:3a7713b1edbc 44
AnnaBridge 171:3a7713b1edbc 45 #define CPU_CLOCK_DIV CPU_CLOCK_DIV_32M /**< <b> Selected divider to be used by application code </b> */
AnnaBridge 171:3a7713b1edbc 46
AnnaBridge 171:3a7713b1edbc 47 #define configCPU_CLOCK_HZ ( ( unsigned long ) (CPU_CLOCK_ROOT_HZ/CPU_CLOCK_DIV) )
AnnaBridge 171:3a7713b1edbc 48 #define configTICK_RATE_HZ ( ( unsigned long ) 1000000 ) // 1uSec ticker rate
AnnaBridge 171:3a7713b1edbc 49
AnnaBridge 171:3a7713b1edbc 50
AnnaBridge 171:3a7713b1edbc 51 /* Lowest priority */
AnnaBridge 171:3a7713b1edbc 52
AnnaBridge 171:3a7713b1edbc 53 #define configKERNEL_INTERRUPT_PRIORITY ( 0xFF )
AnnaBridge 171:3a7713b1edbc 54 #define configMAX_SYSCALL_INTERRUPT_PRIORITY ( 0x8F )
AnnaBridge 171:3a7713b1edbc 55
AnnaBridge 171:3a7713b1edbc 56 #define configSYSTICK_CLOCK_HZ configCPU_CLOCK_HZ
AnnaBridge 171:3a7713b1edbc 57
AnnaBridge 171:3a7713b1edbc 58 /* Constants required to manipulate the core. Registers first... */
AnnaBridge 171:3a7713b1edbc 59 #define portNVIC_SYSTICK_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000e010 ) )
AnnaBridge 171:3a7713b1edbc 60 #define portNVIC_SYSTICK_LOAD_REG ( * ( ( volatile unsigned long * ) 0xe000e014 ) )
AnnaBridge 171:3a7713b1edbc 61 #define portNVIC_SYSTICK_CURRENT_VALUE_REG ( * ( ( volatile unsigned long * ) 0xe000e018 ) )
AnnaBridge 171:3a7713b1edbc 62 #define portNVIC_INT_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000ed04 ) )
AnnaBridge 171:3a7713b1edbc 63 #define portNVIC_SYSPRI2_REG ( * ( ( volatile unsigned long * ) 0xe000ed20 ) )
AnnaBridge 171:3a7713b1edbc 64
AnnaBridge 171:3a7713b1edbc 65 /* ...then bits in the registers. */
AnnaBridge 171:3a7713b1edbc 66 #define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
AnnaBridge 171:3a7713b1edbc 67 #define portNVIC_SYSTICK_INT_BIT ( 1UL << 1UL )
AnnaBridge 171:3a7713b1edbc 68 #define portNVIC_SYSTICK_ENABLE_BIT ( 1UL << 0UL )
AnnaBridge 171:3a7713b1edbc 69 #define portNVIC_SYSTICK_COUNT_FLAG_BIT ( 1UL << 16UL )
AnnaBridge 171:3a7713b1edbc 70
AnnaBridge 171:3a7713b1edbc 71 /* Orion has 4 interrupt priority bits
AnnaBridge 171:3a7713b1edbc 72 */
AnnaBridge 171:3a7713b1edbc 73 #define portNVIC_SYSTICK_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 24 )
AnnaBridge 171:3a7713b1edbc 74
AnnaBridge 171:3a7713b1edbc 75 /* API definitions */
AnnaBridge 171:3a7713b1edbc 76 void fSysTickInit(void);
AnnaBridge 171:3a7713b1edbc 77
AnnaBridge 171:3a7713b1edbc 78 void fSysTickHandler(void);
AnnaBridge 171:3a7713b1edbc 79
AnnaBridge 171:3a7713b1edbc 80 uint32_t fSysTickRead(void);
AnnaBridge 171:3a7713b1edbc 81
AnnaBridge 171:3a7713b1edbc 82 void fSysTickEnableInterrupt (void);
AnnaBridge 171:3a7713b1edbc 83
AnnaBridge 171:3a7713b1edbc 84 void fSysTickDisableInterrupt (void);
AnnaBridge 171:3a7713b1edbc 85 #endif // TICKER_H_