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systick.h
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// THIS HEADER FILE IS AUTOMATICALLY GENERATED -- DO NOT EDIT
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/*
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* Copyright (c) 2021 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef _HARDWARE_STRUCTS_SYSTICK_H
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#define _HARDWARE_STRUCTS_SYSTICK_H
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#include "
hardware/address_mapped.h
"
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#include "hardware/regs/m0plus.h"
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// Reference to datasheet: https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf#tab-registerlist_m0plus
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//
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// The _REG_ macro is intended to help make the register navigable in your IDE (for example, using the "Go to Definition" feature)
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// _REG_(x) will link to the corresponding register in hardware/regs/m0plus.h.
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//
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// Bit-field descriptions are of the form:
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// BITMASK [BITRANGE]: FIELDNAME (RESETVALUE): DESCRIPTION
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typedef
struct
{
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_REG_(M0PLUS_SYST_CSR_OFFSET)
// M0PLUS_SYST_CSR
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// Use the SysTick Control and Status Register to enable the SysTick features
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// 0x00010000 [16] : COUNTFLAG (0): Returns 1 if timer counted to 0 since last time this was read
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// 0x00000004 [2] : CLKSOURCE (0): SysTick clock source
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// 0x00000002 [1] : TICKINT (0): Enables SysTick exception request:
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// 0x00000001 [0] : ENABLE (0): Enable SysTick counter:
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io_rw_32 csr;
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_REG_(M0PLUS_SYST_RVR_OFFSET)
// M0PLUS_SYST_RVR
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// Use the SysTick Reload Value Register to specify the start value to load into the current value register when the...
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// 0x00ffffff [23:0] : RELOAD (0): Value to load into the SysTick Current Value Register when the counter reaches 0
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io_rw_32 rvr;
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_REG_(M0PLUS_SYST_CVR_OFFSET)
// M0PLUS_SYST_CVR
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// Use the SysTick Current Value Register to find the current value in the register
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// 0x00ffffff [23:0] : CURRENT (0): Reads return the current value of the SysTick counter
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io_rw_32 cvr;
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_REG_(M0PLUS_SYST_CALIB_OFFSET)
// M0PLUS_SYST_CALIB
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// Use the SysTick Calibration Value Register to enable software to scale to any required speed using divide and multiply
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// 0x80000000 [31] : NOREF (0): If reads as 1, the Reference clock is not provided - the CLKSOURCE bit of the...
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// 0x40000000 [30] : SKEW (0): If reads as 1, the calibration value for 10ms is inexact (due to clock frequency)
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// 0x00ffffff [23:0] : TENMS (0): An optional Reload value to be used for 10ms (100Hz) timing, subject to system clock...
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io_ro_32 calib;
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}
systick_hw_t
;
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#define systick_hw ((systick_hw_t *)(PPB_BASE + M0PLUS_SYST_CSR_OFFSET))
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#endif
address_mapped.h
systick_hw_t
Definition
systick.h:23