mirror of
https://github.com/apache/nuttx.git
synced 2026-05-19 03:03:37 +08:00
This commit addes support for the i.MXRT RTC. This initial commit is code complete (with limited featurs and options) but untested.
Squashed commit of the following:
arch/arm/src/imxrt: Fix some first time compile issues.
arch/arm/src/imxrt: This brings the RTC implement to code complete but still untested.
arch/arm/src/imxrt: Add some RTC initialization logic.
arch/arm/src/imxrt: Flesh out most of the RTC driver lower half and LPSRTC support.
arch/arm/src/imxrt: Some inital, partial implementation of the HPRTC and LPSRTC.
arch/arm/src/imxrt: Add HPSRTC/HPRTC file framework (no logic, just skeleton files).
arch/arm/src/imxrt: Add HPRTC header file.
Some initial configuration logic for SNVS LPRTC and HP RTC.
This commit is contained in:
Gregory Nutt
@@ -136,6 +136,15 @@ config IMXRT_SEMC
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bool "Smart External Memory Controller (SEMC)"
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default n
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config IMXRT_SNVS_LPSRTC
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bool "LP SRTC"
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default n
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select IMXRT_SNVS_HPRTC
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config IMXRT_SNVS_HPRTC
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bool "HP RTC"
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default n
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endmenu # i.MX RT Peripheral Selection
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menuconfig IMXRT_GPIO_IRQ
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@@ -452,4 +461,23 @@ config IMXRT_EDMA_EDBG
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system exits debug mode or the EDBG bit is cleared
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endmenu # eDMA Global Configuration
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menu "RTC Configuration"
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depends on IMXRT_SNVS_HPRTC
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config IMXRT_RTC_MAGIC_REG
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int "RTC SNVS GPR"
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default 0
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range 0 3
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---help---
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The BKP register used to store/check the Magic value to determine if
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RTC is already setup
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config IMXRT_RTC_MAGIC
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hex "RTC Magic 1"
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default 0xfacefeed
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---help---
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Value used as Magic to determine if the RTC is already setup
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endmenu
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endif # ARCH_CHIP_IMXRT
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@@ -120,6 +120,17 @@ ifeq ($(CONFIG_IMXRT_EDMA),y)
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CHIP_CSRCS += imxrt_edma.c
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endif
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ifeq ($(CONFIG_IMXRT_SNVS_LPSRTC),y)
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CHIP_CSRCS += imxrt_lpsrtc.c
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CHIP_CSRCS += imxrt_hprtc.c
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else ifeq ($(CONFIG_IMXRT_SNVS_HPRTC),y)
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CHIP_CSRCS += imxrt_hprtc.c
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endif
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ifeq ($(CONFIG_RTC_DRIVER),y)
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CHIP_CSRCS += imxrt_rtc_lowerhalf.c
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endif
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ifeq ($(CONFIG_IMXRT_ENET),y)
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CHIP_CSRCS += imxrt_enet.c
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endif
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@@ -47,6 +47,8 @@
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* Pre-processor Definitions
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********************************************************************************************/
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#define IMXRT_SNVS_LP_MAXTAMPER 10
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/* Register offsets *************************************************************************/
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#define IMXRT_SNVS_HPLR_OFFSET 0x0000 /* SNVS_HP Lock Register */
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@@ -127,7 +129,9 @@
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/* Bits 0-3: Reserved */
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#define SNVS_HPCOMR_LPSWR (1 << 4) /* Bit 4: LP Software Reset */
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#define SNVS_HPCOMR_LPSWRDIS (1 << 5) /* Bit 5: LP Software Reset Disable */
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/* Bits 6-30: Reserved */
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/* Bits 6-7: Reserved */
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#define SNVS_HPCOMR_SWSV (1 << 8) /* Bit 8: */
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/* Bits 9-30: Reserved */
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#define SNVS_HPCOMR_NPSWAEN (1 << 31) /* Bit 31: Non-Privileged Software Access Enable */
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/* SNVS_HP Control Register */
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@@ -143,6 +147,7 @@
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/* Bit 9: Reserved */
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#define SNVS_HPCR_HPCALBVAL_SHIFT (10) /* Bits 10-14: HP Calibration Value */
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#define SNVS_HPCR_HPCALBVAL_MASK (31 << SNVS_HPCR_HPCALBVAL_SHIFT)
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# define SNVS_HPCR_HPCALBVAL(n) ((uint32_t)(n) << SNVS_HPCR_HPCALBVAL_SHIFT)
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# define SNVS_HPCR_HPCALBVAL_ZERO (0 << SNVS_HPCR_HPCALBVAL_SHIFT) /* +0 counts per 32768 ticks */
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# define SNVS_HPCR_HPCALBVAL_P1 (1 << SNVS_HPCR_HPCALBVAL_SHIFT) /* +1 counts per 32768 ticks */
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# define SNVS_HPCR_HPCALBVAL_P2 (2 << SNVS_HPCR_HPCALBVAL_SHIFT) /* +2 counts per 32768 ticks */
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@@ -151,7 +156,9 @@
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# define SNVS_HPCR_HPCALBVAL_M15 (17 << SNVS_HPCR_HPCALBVAL_SHIFT) /* -15 counts per 32768 ticks */
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# define SNVS_HPCR_HPCALBVAL_M2 (30 << SNVS_HPCR_HPCALBVAL_SHIFT) /* -2 counts per 32768 ticks */
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# define SNVS_HPCR_HPCALBVAL_M1 (31 << SNVS_HPCR_HPCALBVAL_SHIFT) /* -1 counts per 32768 ticks */
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/* Bits 15-23: Reserved */
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/* Bits 15: Reserved */
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#define SNVS_HPCR_HPTS (1 << 16) /* Bit 16: LPSRTC time sychronization */
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/* Bits 17-23: Reserved */
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#define SNVS_HPCR_BTNCONFIG_SHIFT (24) /* Bits 24-26: Button Configuration */
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#define SNVS_HPCR_BTNCONFIG_MASK (7 << SNVS_HPCR_BTNCONFIG_SHIFT)
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# define SNVS_HPCR_BTNCONFIG_ LOW (0 << SNVS_HPCR_BTNCONFIG_SHIFT) /* Button signal active low */
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@@ -183,8 +190,6 @@
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#define SNVS_HPTAMR_MASK 0x00007fff /* Bits 0-14: HP Time Alarm, most-significant 15 bits */
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#define SNVS_HPTALR_
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/* SNVS_LP Lock Register */
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/* Bits 0-3: Reserved */
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@@ -203,6 +208,20 @@
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#define SNVS_LPCR_TOP (1 << 6) /* Bit 6: Turn off System Power */
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#define SNVS_LPCR_PWRGLITCHEN (1 << 7) /* Bit 7: Power Glitch Enable */
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/* Bits 8-15: Reserved */
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#define SNVS_LPCR_LPCALBEN (1 << 8) /* Bit 8: LP Real Time Counter Calibration Enabled */
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/* Bit 9: Reserved */
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#define SNVS_LPCR_LPCALBVAL_SHIFT (10) /* Bits 10-14: LP Calibration Value */
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#define SNVS_LPCR_LPCALBVAL_MASK (31 << SNVS_LPCR_LPCALBVAL_SHIFT)
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# define SNVS_LPCR_LPCALBVAL(n) ((uint32_t)(n) << SNVS_LPCR_LPCALBVAL_SHIFT)
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# define SNVS_LPCR_LPCALBVAL_ZERO (0 << SNVS_LPCR_LPCALBVAL_SHIFT) /* +0 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_P1 (1 << SNVS_LPCR_LPCALBVAL_SHIFT) /* +1 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_P2 (2 << SNVS_LPCR_LPCALBVAL_SHIFT) /* +2 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_P15 (15 << SNVS_LPCR_LPCALBVAL_SHIFT) /* +15 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_M16 (16 << SNVS_LPCR_LPCALBVAL_SHIFT) /* -16 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_M15 (17 << SNVS_LPCR_LPCALBVAL_SHIFT) /* -15 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_M2 (30 << SNVS_LPCR_LPCALBVAL_SHIFT) /* -2 counts per 32768 ticks */
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# define SNVS_LPCR_LPCALBVAL_M1 (31 << SNVS_LPCR_LPCALBVAL_SHIFT) /* -1 counts per 32768 ticks */
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/* Bit 15: Reserved */
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#define SNVS_LPCR_BTNPRESSTIME_SHIFT (16) /* Bits 16-17: PMIC button press time out values */
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#define SNVS_LPCR_BTNPRESSTIME_MASK (3 << SNVS_LPCR_BTNPRESSTIME_SHIFT)
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# define SNVS_LPCR_BTNPRESSTIME_5SEC (0 << SNVS_LPCR_BTNPRESSTIME_SHIFT) /* 5 secs */
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@@ -229,7 +248,7 @@
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/* Bits 0-1: Reserved */
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#define SNVS_LPSR_MCR (1 << 2) /* Bit 2: Monotonic Counter Rollover */
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/* Bits 3-16: Reserved */ */
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/* Bits 3-16: Reserved */
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#define SNVS_LPSR_EO (1 << 17) /* Bit 17: Emergency Off */
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#define SNVS_LPSR_SPO (1 << 18) /* Bit 18: Set Power Off */
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/* Bits 19-31: Reserved */
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,255 @@
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/****************************************************************************
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* arch/arm/src/imxrt/imxrt_hprtc.h
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
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||||
* are met:
|
||||
*
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* 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.
|
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* 3. Neither the name NuttX nor the names of its contributors may be
|
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* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
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||||
*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
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* "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 OWNER 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.
|
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_IMXRT_IMXRT_HPRTC_H
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#define __ARCH_ARM_SRC_IMXRT_IMXRT_HPRTC_H
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#include <nuttx/config.h>
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#include "chip.h"
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#ifdef CONFIG_IMXRT_SNVS_HPRTC
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/****************************************************************************
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* Preprocessor Definitions
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****************************************************************************/
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#ifdef CONFIG_RTC_DATETIME
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# error CONFIG_RTC_DATETIME should not be selected with this driver
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#endif
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#ifdef CONFIG_RTC_PERIODIC
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# error CONFIG_RTC_PERIODIC should not be selected with this driver
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#endif
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/* REVISIT: This is probably supportable. The 47 bit timer does have
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* accuracy greater than 1 second.
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*/
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#ifdef CONFIG_RTC_HIRES
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# error CONFIG_RTC_PERIODIC should not be selected with this driver
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* Callback type used by the HPRTC log to notify the RTC driver when the
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* alarm expires.
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*/
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typedef CODE void (*hprtc_alarm_callback_t)(void);
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#if !defined(CONFIG_IMXRT_SNVS_LPSRTC) && defined(CONFIG_RTC_DRIVER)
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bool g_hprtc_timset; /* True: time has been set since power up */
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Functions used only for HPRTC
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************************************************************************************/
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/************************************************************************************
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* Logic Common to LPSRTC and HPRTC
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************************************************************************************/
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/****************************************************************************
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* Name: imxrt_rtc_lowerhalf
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*
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* Description:
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* Instantiate the RTC lower half driver for the i.MXRT. General usage:
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*
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* #include <nuttx/timers/rtc.h>
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* #include "imxrt_hprtc.h"
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*
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* struct rtc_lowerhalf_s *lower;
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* lower = imxrt_hprtc_lowerhalf();
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* rtc_initialize(0, lower);
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* On success, a non-NULL RTC lower interface is returned. NULL is
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* returned on any failure.
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*
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****************************************************************************/
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#ifdef CONFIG_RTC_DRIVER
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struct rtc_lowerhalf_s;
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FAR struct rtc_lowerhalf_s *imxrt_rtc_lowerhalf(void);
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#endif
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/************************************************************************************
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* Name: imxrt_hprtc_initialize
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*
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* Description:
|
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* Initialize the LPSRTC per the selected configuration. This function is called
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* via up_rtc_initialize (see imxrt_hprtc.c).
|
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*
|
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* Input Parameters:
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* None
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||||
*
|
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* Returned Value:
|
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* Zero (OK) on success; a negated errno on failure
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*
|
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************************************************************************************/
|
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int imxrt_hprtc_initialize(void);
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|
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/************************************************************************************
|
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* Name: imxrt_hprtc_synchronize
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*
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* Description:
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* Synchronize the HPRTC to the LPSRTC and enable the HPRTC timer.
|
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*
|
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* Input Parameters:
|
||||
* None
|
||||
*
|
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* Returned Value:
|
||||
* None
|
||||
*
|
||||
************************************************************************************/
|
||||
|
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#ifdef CONFIG_IMXRT_SNVS_LPSRTC
|
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void imxrt_hprtc_synchronize(void);
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_hprtc_time
|
||||
*
|
||||
* Description:
|
||||
* Get the current time in seconds. This is the underlying implementation of the
|
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* up_rtc_tim() function that is used by the RTOS during initialization to set up
|
||||
* the system time.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* The current time in seconds
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
uint32_t imxrt_hprtc_time(void);
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_hprtc_getalarm
|
||||
*
|
||||
* Description:
|
||||
* Get the current alarm setting in seconds. This is only used by the lower half
|
||||
* RTC driver.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* The current alarm setting in seconds
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#if defined(CONFIG_RTC_ALARM) && defined(CONFIG_RTC_DRIVER)
|
||||
uint32_t imxrt_hprtc_getalarm(void);
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_hprtc_setalarm
|
||||
*
|
||||
* Description:
|
||||
* Set the alarm (in seconds) and enable alarm interrupts. This is only used by
|
||||
* the lower half RTC driver.
|
||||
*
|
||||
* Input Parameters:
|
||||
* sec - The new alarm setting
|
||||
*
|
||||
* Returned Value:
|
||||
* The current alarm setting in seconds
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#if defined(CONFIG_RTC_ALARM) && defined(CONFIG_RTC_DRIVER)
|
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int imxrt_hprtc_setalarm(FAR struct timespec *ts, hprtc_alarm_callback_t cb);
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_hprtc_alarmdisable
|
||||
*
|
||||
* Description:
|
||||
* Disable alarm interrupts. Used internally after the receipt of the alarm
|
||||
* interrupt. Also called by the lower-half RTC driver in order to cancel an
|
||||
* alarm.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#if defined(CONFIG_RTC_ALARM) && defined(CONFIG_RTC_DRIVER)
|
||||
void imxrt_hprtc_alarmdisable(void);
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#endif /* CONFIG_IMXRT_SNVS_HPRTC */
|
||||
#endif /* __ARCH_ARM_SRC_IMXRT_IMXRT_HPRTC_H */
|
||||
@@ -0,0 +1,258 @@
|
||||
/************************************************************************************
|
||||
* arch/arm/src/imxrt/imxrt_lpsrtc.c
|
||||
*
|
||||
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* 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 NuttX 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 OWNER 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.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/timers/rtc.h>
|
||||
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include "up_arch.h"
|
||||
|
||||
#include "chip/imxrt_snvs.h"
|
||||
#include "imxrt_periphclks.h"
|
||||
#include "imxrt_hprtc.h"
|
||||
#include "imxrt_lpsrtc.h"
|
||||
|
||||
#ifdef CONFIG_IMXRT_SNVS_LPSRTC
|
||||
|
||||
/************************************************************************************
|
||||
* Private Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_lpsrtc_enable
|
||||
*
|
||||
* Description:
|
||||
* Enable/start the LPRTC time counter.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
static void imxrt_lpsrtc_enable(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
|
||||
/* Enable the LPSRTC */
|
||||
|
||||
regval = getreg32(IMXRT_SNVS_LPCR);
|
||||
regval |= SNVS_LPCR_MCENV;
|
||||
putreg32(regval, IMXRT_SNVS_LPCR);
|
||||
|
||||
while ((getreg32(IMXRT_SNVS_LPCR) & SNVS_LPCR_MCENV) == 0)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_lpsrtc_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the LPSRTC per the selected configuration. This function is called
|
||||
* via up_rtc_initialize (see imxrt_hprtc.c).
|
||||
*
|
||||
* NOTE that the LPSRTC is always configured synchronized with the HPRTC. This
|
||||
* means that the time is set via the LPSRTC but read via the HPRTC. Also, only
|
||||
* the alarms from the HPRTC are used.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK) on success; a negated errno on failure
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int imxrt_lpsrtc_initialize(void)
|
||||
{
|
||||
#ifdef CONFIG_IMXRTC_LPSRTC_CALENABLE
|
||||
uint32_t regval;
|
||||
#endif
|
||||
|
||||
/* Initialize the HPRTC */
|
||||
|
||||
imxrt_hprtc_initialize();
|
||||
|
||||
/* Enable clocking to the the SNVS LP module.
|
||||
* Clock is on during all modes, except STOP mode.
|
||||
*/
|
||||
|
||||
imxrt_clockall_snvs_lp();
|
||||
|
||||
#ifdef CONFIG_IMXRTC_LPSRTC_CALENABLE
|
||||
/* Set the LPSRTC calibration value */
|
||||
|
||||
regval = getreg32(IMXRT_SNVS_LPCR);
|
||||
regval &= ~SNVS_LPCR_LPCALBVAL_MASK;
|
||||
regval |= SNVS_LPCR_LPCALBVAL(CONFIG_IMXRTC_LPSRTC_CALVALUE);
|
||||
regval |= SNVS_LPCR_LPCALBEN;
|
||||
putreg32(regval, IMXRT_SNVS_LPCR);
|
||||
#endif
|
||||
|
||||
/* Disable tamper pins.
|
||||
* TODO: I don't think this applies the currently supported device.
|
||||
*/
|
||||
|
||||
/* Enable the LPSRTC */
|
||||
|
||||
imxrt_lpsrtc_enable();
|
||||
|
||||
/* Synchronize HPRTC time with the LPSRTC and enable HPRTC */
|
||||
|
||||
imxrt_hprtc_synchronize();
|
||||
return OK;
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: up_rtc_time
|
||||
*
|
||||
* Description:
|
||||
* Get the current time in seconds. This is similar to the standard time()
|
||||
* function. This interface is only required if the low-resolution RTC/counter
|
||||
* hardware implementation selected. It is only used by the RTOS during
|
||||
* initialization to set up the system time when CONFIG_RTC is set but neither
|
||||
* CONFIG_RTC_HIRES nor CONFIG_RTC_DATETIME are set.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* The current time in seconds
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef CONFIG_RTC_HIRES
|
||||
time_t up_rtc_time(void)
|
||||
{
|
||||
/* Delegate to imxrt_hprtc_time() */
|
||||
|
||||
return imxrt_hprtc_time();
|
||||
}
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: up_rtc_settime
|
||||
*
|
||||
* Description:
|
||||
* Set the RTC to the provided time. All RTC implementations must be able to
|
||||
* set their time based on a standard timespec.
|
||||
*
|
||||
* Input Parameters:
|
||||
* tp - the time to use
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK) on success; a negated errno on failure
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int up_rtc_settime(FAR const struct timespec *ts)
|
||||
{
|
||||
uint32_t regval;
|
||||
|
||||
DEBUGASSERT(ts != NULL);
|
||||
|
||||
/* Disable the LPSRTC */
|
||||
|
||||
regval = getreg32(IMXRT_SNVS_LPCR);
|
||||
regval &= ~SNVS_LPCR_MCENV;
|
||||
putreg32(regval, IMXRT_SNVS_LPCR);
|
||||
|
||||
while ((getreg32(IMXRT_SNVS_LPCR) & SNVS_LPCR_MCENV) != 0)
|
||||
{
|
||||
}
|
||||
|
||||
/* Set LPSRTC time in seconds. We could do better by accounting for the
|
||||
* ts->tv_nsec unused residual.
|
||||
*
|
||||
* IMXRT_SNVS_LPSMCMR Bits 9-14 = 15-bit MSB of alarm setting.
|
||||
* IMXRT_SNVS_LPSMCLR 32-bit LSB of alarm setting.
|
||||
*/
|
||||
|
||||
putreg32((uint32_t)ts->tv_sec >> 17, IMXRT_SNVS_LPSMCMR);
|
||||
putreg32((uint32_t)ts->tv_sec << 15, IMXRT_SNVS_LPSMCLR);
|
||||
|
||||
/* The time has been set */
|
||||
|
||||
putreg32(CONFIG_IMXRT_RTC_MAGIC,
|
||||
IMXRT_SNVS_LPGPR(CONFIG_IMXRT_RTC_MAGIC_REG));
|
||||
|
||||
/* Unconditionally re-enable the LPSRTC */
|
||||
|
||||
imxrt_lpsrtc_enable();
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: imxrt_lpsrtc_havesettime
|
||||
*
|
||||
* Description:
|
||||
* Check if the LPSRTC time has been set
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* Returns true if RTC date-time have been previously set.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
bool imxrt_lpsrtc_havesettime(void)
|
||||
{
|
||||
return (getreg32(IMXRT_SNVS_LPGPR(CONFIG_IMXRT_RTC_MAGIC_REG)) ==
|
||||
CONFIG_IMXRT_RTC_MAGIC);
|
||||
}
|
||||
#endif /* CONFIG_IMXRT_SNVS_LPSRTC */
|
||||
@@ -0,0 +1,127 @@
|
||||
/****************************************************************************
|
||||
* arch/arm/src/imxrt/imxrt_lpsrtc.h
|
||||
*
|
||||
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* 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 NuttX 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 OWNER 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ARCH_ARM_SRC_IMXRT_IMXRT_LPSRTC_H
|
||||
#define __ARCH_ARM_SRC_IMXRT_IMXRT_LPSRTC_H
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include "chip.h"
|
||||
|
||||
#ifdef CONFIG_IMXRT_SNVS_LPSRTC
|
||||
|
||||
/****************************************************************************
|
||||
* Preprocessor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
# ifdef CONFIG_RTC_DATETIME
|
||||
# error CONFIG_RTC_DATETIME should not be selected with this driver
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RTC_PERIODIC
|
||||
# error CONFIG_RTC_PERIODIC should not be selected with this driver
|
||||
# endif
|
||||
|
||||
/* REVISIT: This is probably supportable. The 47 bit timer does have
|
||||
* accuracy greater than 1 second.
|
||||
*/
|
||||
|
||||
# ifdef CONFIG_RTC_HIRES
|
||||
# error CONFIG_RTC_PERIODIC should not be selected with this driver
|
||||
# endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: imxrt_lpsrtc_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the LPSRTC per the selected configuration. This function is called
|
||||
* via up_rtc_initialize (see imxrt_hprtc.c).
|
||||
*
|
||||
* NOTE that the LPSRTC is always configured synchronized with the HPRTC. This
|
||||
* means that the time is set via the LPSRTC but read via the HPRTC. Also, only
|
||||
* the alarms from the HPRTC are used.
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero (OK) on success; a negated errno on failure
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int imxrt_lpsrtc_initialize(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: imxrt_lpsrtc_havesettime
|
||||
*
|
||||
* Description:
|
||||
* Check if the LPSRTC time has been set
|
||||
*
|
||||
* Input Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* Returns true if RTC date-time have been previously set.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
bool imxrt_lpsrtc_havesettime(void);
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* CONFIG_IMXRT_SNVS_LPSRTC */
|
||||
#endif /* __ARCH_ARM_SRC_IMXRT_IMXRT_LPSRTC_H */
|
||||
File diff suppressed because it is too large
Load Diff
@@ -289,10 +289,6 @@ Configuration sub-directories
|
||||
CONFIG_NSH_NETINIT_THREAD_PRIORITY=80
|
||||
CONFIG_NSH_NETINIT_THREAD_STACKSIZE=1568
|
||||
|
||||
STATUS: As of this writing, I get a hardfault when I enable the PHY
|
||||
interrupt so I suspect that there is something incorrect in that
|
||||
pin configuration.
|
||||
|
||||
nsh:
|
||||
|
||||
Configures the NuttShell (nsh) located at examples/nsh. This NSH
|
||||
|
||||
Reference in New Issue
Block a user