【简介】
S32K146 芯片内部集成了RTC 定时器，我们可以使用内部的RTC 来实现实时时钟的使用。RTC 模块的特性描述如下：
【S32DS时钟配置】
RTC 模块有多路时钟源可以配置，本地使用LPO128K 的四分频作为RTC 的工作时钟，配置如下
【S32DS RTC 参数配置】
生成如下初始化代码
/***********************************************************************************************************************
* This file was generated by the S32 Configuration Tools. Any manual edits made to this file
* will be overwritten if the respective S32 Configuration Tools is used to update this file.
**********************************************************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!GlobalInfo
product: Peripherals v14.0
processor: S32K146
package_id: S32K146_LQFP144
mcu_data: s32sdk_s32k1xx_rtm_401
processor_version: 0.0.0
functionalGroups:
- name: BOARD_InitPeripherals
UUID: 2d0c0af7-dbe7-4f00-821a-837510d6ab4e
called_from_default_init: true
selectedCore: core0
* BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */
/*******************************************************************************
* Included files
******************************************************************************/
#include "peripherals_rtc_1.h"
/*******************************************************************************
* rtc_1 initialization code
******************************************************************************/
/* clang-format off */
/* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
instance:
- name: 'rtc_1'
- type: 'rtc_config'
- mode: 'rtcDriver'
- custom_name_enabled: 'false'
- type_id: 'rtc'
- functional_group: 'BOARD_InitPeripherals'
- peripheral: 'RTC'
- config_sets:
- rtc_driver:
- rtcInitConfig:
- 0:
- init:
- name: 'rtc_1InitCfg0'
- readonly: 'true'
- updateEnable: 'false'
- nonSupervisorAccessEnable: 'false'
- compensationEnable: 'false'
- compensationInterval: '0'
- compensation: '0'
- clockSelect: 'RTC_CLK_SRC_LPO_1KHZ'
- clockOutConfig: 'RTC_CLKOUT_DISABLED'
- date:
- 0:
- year: '1970'
- month: '1'
- day: '1'
- hour: '0'
- minutes: '0'
- seconds: '0'
- rtcLockConfig:
- 0:
- enableCfg: 'true'
- name: 'rtc_1LockCfg0'
- readonly: 'true'
- lockRegisterLock: 'false'
- statusRegisterLock: 'false'
- controlRegisterLock: 'false'
- timeCompensationRegisterLock: 'false'
- rtcAlarmConfig:
- 0:
- enableCfg: 'true'
- name: 'rtc_1AlarmCfg0'
- alarmTime:
- 0:
- year: '1970'
- month: '1'
- day: '1'
- hour: '0'
- minutes: '0'
- seconds: '0'
- repeat: 'false'
- repeatForever: 'false'
- repetitionInterval: '0'
- numberOfRepeats: '0'
- alarmIntEnable: 'false'
- alarmCallback: 'NULL'
- rtcTSIConfig:
- 0:
- enableCfg: 'true'
- name: 'rtc_1SecIntCfg0'
- secondIntConfig: 'RTC_INT_1HZ'
- secondIntEnable: 'false'
- rtcSecondsCallback: 'NULL'
- rtcFaultConfig:
- 0:
- enableCfg: 'true'
- name: 'rtc_1FaultCfg0'
- overflowIntEnable: 'false'
- timeInvalidIntEnable: 'false'
- rtcCallback: 'NULL'
* BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS **********/
/* clang-format on */
/**
* @page misra_violations MISRA-C:2012 violations
*
*
* @section [global]
* Violates MISRA 2012 Advisory Rule 2.5, Global macro not referenced.
* The global macro will be used in function call of the module.
* @section [global]
* Violates MISRA 2012 Advisory Rule 8.7, External variable could be made static.
* The external variables will be used in other source files in application code.
*
*/
/*
* RTC Initialization configurations
*/
/*! rtc_1InitCfg0 instance initialization configuration */
const rtc_init_config_t rtc_1InitCfg0 = {
.updateEnable = false,
.nonSupervisorAccessEnable = false,
.compensationInterval = 0U,
.compensation = 0,
.clockSelect = RTC_CLK_SRC_LPO_1KHZ,
.clockOutConfig = RTC_CLKOUT_DISABLED
};
/*! rtc_1InitCfg0_StartTime Initial Time and Date */
const rtc_timedate_t rtc_1InitCfg0_StartTime = {
.year = 1970U,
.month = 1U,
.day = 1U,
.hour = 0U,
.minutes = 0U,
.seconds = 0U
};
/*
* RTC Register Lock configurations
*/
/*! rtc_1LockCfg0 register lock configuration */
const rtc_register_lock_config_t rtc_1LockCfg0 = {
.lockRegisterLock = false,
.statusRegisterLock = false,
.controlRegisterLock = false,
.timeCompensationRegisterLock = false
};
/*
* RTC Alarm configurations
*/
/*! rtc_1AlarmCfg0 alarm configuration */
rtc_alarm_config_t rtc_1AlarmCfg0 = {
.alarmTime = {
.year = 1970U,
.month = 1U,
.day = 1U,
.hour = 0U,
.minutes = 0U,
.seconds = 0U
},
.repeatForever = false,
.repetitionInterval = 0UL,
.numberOfRepeats = 0UL,
.alarmIntEnable = false,
.callbackParams = NULL,
.alarmCallback = NULL
};
/*
* RTC Time Seconds Interrupt configurations
*/
/*! rtc_1SecIntCfg0 time seconds configuration */
rtc_seconds_int_config_t rtc_1SecIntCfg0 = {
.secondIntConfig = RTC_INT_1HZ,
.secondIntEnable = false,
.secondsCallbackParams = NULL,
.rtcSecondsCallback = NULL
};
/*
* RTC Fault interrupt configurations
*/
/*! rtc_1FaultCfg0 fault configuration */
rtc_interrupt_config_t rtc_1FaultCfg0 = {
.overflowIntEnable = false,
.timeInvalidIntEnable = false,
.callbackParams = NULL,
.rtcCallback = NULL
};【代码验证】
添加如下代码初始化RTC
static int rtc_init(void)
{
status_t ret;
/* Call the init function */
ret = RTC_DRV_Init(RTC_1, &rtc_1InitCfg0);
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC init failed %x.",ret);
}
else
{
LOG_I("RTC init OK.");
}
/* Set the time and date */
ret = RTC_DRV_SetTimeDate(RTC_1, &rtc_1InitCfg0_StartTime);
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC set time failed %x.",ret);
}
else
{
LOG_I("RTC set time OK.");
}
/* Start RTC counter */
ret = RTC_DRV_StartCounter(RTC_1);
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC start failed %x.",ret);
}
else
{
LOG_I("RTC start OK.");
}
return 1;
}
INIT_BOARD_EXPORT_LEVEL1(rtc_init);添加如下代码输出RTC时间
unsigned int date(char argc,char *argv[])
{
status_t ret;
rtc_timedate_t currentTime;
ret = RTC_DRV_GetCurrentTimeDate ( RTC_1, ¤tTime );
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC start failed %x.",ret);
}
else
{
LOG_I("%d:%d:%d %d:%d:%d",currentTime.year,currentTime.month,currentTime.day,
currentTime.hour,currentTime.minutes,currentTime.seconds);
}
return 0;
}连续读取RTC 时间发现RTC 计数器已经在持续变化更新。
更新测试代码添加RTC 时间设置，设置时间后读取RTC 时间已经按预期的设置成功
unsigned int date(char argc,char *argv[])
{
status_t ret;
rtc_timedate_t currentTime;
if(argc == 1)
{
ret = RTC_DRV_GetCurrentTimeDate ( RTC_1, ¤tTime );
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC read failed %x.",ret);
}
else
{
LOG_I("%d:%d:%d %d:%d:%d",currentTime.year,currentTime.month,currentTime.day,
currentTime.hour,currentTime.minutes,currentTime.seconds);
}
}
if(argc == 7)
{
ret = RTC_DRV_StopCounter(RTC_1);
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC stop failed %x.",ret);
}
currentTime.year = atoi(argv[1]);
currentTime.month = atoi(argv[2]);
currentTime.day = atoi(argv[3]);
currentTime.hour = atoi(argv[4]);
currentTime.minutes = atoi(argv[5]);
currentTime.seconds = atoi(argv[6]);
ret = RTC_DRV_SetTimeDate(RTC_1, ¤tTime);
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC set time failed %x.",ret);
}
ret = RTC_DRV_StartCounter(RTC_1);
if(ret != STATUS_SUCCESS)
{
LOG_E("RTC start failed %x.",ret);
}
}
return 0;
}
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