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