| //***************************************************************************** |
| // |
| // am_reg_systick.h |
| //! @file |
| //! |
| //! @brief Register macros for the SYSTICK module |
| // |
| //***************************************************************************** |
| |
| //***************************************************************************** |
| // |
| // Copyright (c) 2017, Ambiq Micro |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // 1. Redistributions of source code must retain the above copyright notice, |
| // this list of conditions and the following disclaimer. |
| // |
| // 2. 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. |
| // |
| // 3. Neither the name of the copyright holder 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 HOLDER 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. |
| // |
| // This is part of revision v1.2.10-2-gea660ad-hotfix2 of the AmbiqSuite Development Package. |
| // |
| //***************************************************************************** |
| #ifndef AM_REG_SYSTICK_H |
| #define AM_REG_SYSTICK_H |
| |
| //***************************************************************************** |
| // |
| // Instance finder. (1 instance(s) available) |
| // |
| //***************************************************************************** |
| #define AM_REG_SYSTICK_NUM_MODULES 1 |
| #define AM_REG_SYSTICKn(n) \ |
| (REG_SYSTICK_BASEADDR + 0x00000000 * n) |
| |
| //***************************************************************************** |
| // |
| // Register offsets. |
| // |
| //***************************************************************************** |
| #define AM_REG_SYSTICK_SYSTCSR_O 0xE000E010 |
| #define AM_REG_SYSTICK_SYSTRVR_O 0xE000E014 |
| #define AM_REG_SYSTICK_SYSTCVR_O 0xE000E018 |
| #define AM_REG_SYSTICK_SYSTCALIB_O 0xE000E01C |
| |
| //***************************************************************************** |
| // |
| // SYSTICK_SYSTCSR - SysTick Control and Status Register. |
| // |
| //***************************************************************************** |
| // Returns 1 if timer counted to 0 since last time this was read. |
| #define AM_REG_SYSTICK_SYSTCSR_COUNTFLAG_S 16 |
| #define AM_REG_SYSTICK_SYSTCSR_COUNTFLAG_M 0x00010000 |
| #define AM_REG_SYSTICK_SYSTCSR_COUNTFLAG(n) (((uint32_t)(n) << 16) & 0x00010000) |
| |
| // Enables SysTick exception request. Software can use COUNTFLAG to determine if |
| // SysTick has ever counted to zero. 0 = counting down to zero does not assert |
| // the SysTick exception request; 1 = counting down to zero asserts the SysTick |
| // exception request. |
| #define AM_REG_SYSTICK_SYSTCSR_TICKINT_S 1 |
| #define AM_REG_SYSTICK_SYSTCSR_TICKINT_M 0x00000002 |
| #define AM_REG_SYSTICK_SYSTCSR_TICKINT(n) (((uint32_t)(n) << 1) & 0x00000002) |
| |
| // Enables the counter. 0 = counter disabled; 1 = counter enabled. |
| #define AM_REG_SYSTICK_SYSTCSR_ENABLE_S 0 |
| #define AM_REG_SYSTICK_SYSTCSR_ENABLE_M 0x00000001 |
| #define AM_REG_SYSTICK_SYSTCSR_ENABLE(n) (((uint32_t)(n) << 0) & 0x00000001) |
| |
| //***************************************************************************** |
| // |
| // SYSTICK_SYSTRVR - SysTick Reload Value Register. |
| // |
| //***************************************************************************** |
| // Value to load into the SYSTCVR register when the counter is enabled and when |
| // it reaches 0. |
| #define AM_REG_SYSTICK_SYSTRVR_RELOAD_S 0 |
| #define AM_REG_SYSTICK_SYSTRVR_RELOAD_M 0x00FFFFFF |
| #define AM_REG_SYSTICK_SYSTRVR_RELOAD(n) (((uint32_t)(n) << 0) & 0x00FFFFFF) |
| |
| //***************************************************************************** |
| // |
| // SYSTICK_SYSTCVR - SysTick Current Value Register. |
| // |
| //***************************************************************************** |
| // Reads return the current value of the SysTick counter. A write of any value |
| // clears the field to 0, and also clears the SYSTCSR COUNTFLAG bit to 0. |
| #define AM_REG_SYSTICK_SYSTCVR_CURRENT_S 0 |
| #define AM_REG_SYSTICK_SYSTCVR_CURRENT_M 0x00FFFFFF |
| #define AM_REG_SYSTICK_SYSTCVR_CURRENT(n) (((uint32_t)(n) << 0) & 0x00FFFFFF) |
| |
| //***************************************************************************** |
| // |
| // SYSTICK_SYSTCALIB - SysTick Calibration Value Register. |
| // |
| //***************************************************************************** |
| // Indicates whether the device provides a reference clock to the processor. 0 = |
| // reference clock provided; 1 = no reference clock provided. If your device |
| // does not provide a reference clock, the SYST_CSR.CLKSOURCE bit reads-as-one |
| // and ignores writes. |
| #define AM_REG_SYSTICK_SYSTCALIB_NOREF_S 31 |
| #define AM_REG_SYSTICK_SYSTCALIB_NOREF_M 0x80000000 |
| #define AM_REG_SYSTICK_SYSTCALIB_NOREF(n) (((uint32_t)(n) << 31) & 0x80000000) |
| |
| // Indicates whether the TENMS value is exact. 0 = TENMS value is exact; 1 = |
| // TENMS value is inexact, or not given. An inexact TENMS value can affect the |
| // suitability of SysTick as a software real time clock. |
| #define AM_REG_SYSTICK_SYSTCALIB_SKEW_S 30 |
| #define AM_REG_SYSTICK_SYSTCALIB_SKEW_M 0x40000000 |
| #define AM_REG_SYSTICK_SYSTCALIB_SKEW(n) (((uint32_t)(n) << 30) & 0x40000000) |
| |
| // Reload value for 10ms (100Hz) timing, subject to system clock skew errors. If |
| // the value reads as zero, the calibration value is not known. |
| #define AM_REG_SYSTICK_SYSTCALIB_TENMS_S 0 |
| #define AM_REG_SYSTICK_SYSTCALIB_TENMS_M 0x00FFFFFF |
| #define AM_REG_SYSTICK_SYSTCALIB_TENMS(n) (((uint32_t)(n) << 0) & 0x00FFFFFF) |
| |
| #endif // AM_REG_SYSTICK_H |
