A board support package for the LPC4088 Display Module.
Dependencies: DM_HttpServer DM_USBHost
Dependents: lpc4088_displaymodule_emwin lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI ... more
Fork of DMSupport by
dm_rtc.cpp
- Committer:
- embeddedartists
- Date:
- 2019-11-04
- Revision:
- 42:bbfe299d4a0c
File content as of revision 42:bbfe299d4a0c:
/* * Copyright 2019 Embedded Artists AB * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /****************************************************************************** * Includes *****************************************************************************/ #include "mbed.h" #include "dm_rtc.h" #include "mbed_mktime.h" /****************************************************************************** * Defines and typedefs *****************************************************************************/ /****************************************************************************** * External global variables *****************************************************************************/ /****************************************************************************** * Local variables *****************************************************************************/ /****************************************************************************** * Local Functions *****************************************************************************/ /****************************************************************************** * Public Functions *****************************************************************************/ void dm_init_rtc(void) { LPC_SC->PCONP |= 0x200; // Ensure power is on LPC_RTC->CCR = 0x00; LPC_RTC->CCR |= 1 << 0; // Ensure the RTC is enabled } time_t dm_read_rtc(void) { // Setup a tm structure based on the RTC struct tm timeinfo; timeinfo.tm_sec = LPC_RTC->SEC; timeinfo.tm_min = LPC_RTC->MIN; timeinfo.tm_hour = LPC_RTC->HOUR; timeinfo.tm_mday = LPC_RTC->DOM; timeinfo.tm_mon = LPC_RTC->MONTH - 1; timeinfo.tm_year = LPC_RTC->YEAR - 1900; // Convert to timestamp time_t t; if (_rtc_maketime(&timeinfo, &t, RTC_4_YEAR_LEAP_YEAR_SUPPORT) == false) { return 0; } return t; } void dm_write_rtc(time_t t) { // Convert the time in to a tm struct tm timeinfo; if (_rtc_localtime(t, &timeinfo, RTC_4_YEAR_LEAP_YEAR_SUPPORT) == false) { return; } // Pause clock, and clear counter register (clears us count) LPC_RTC->CCR |= 2; // Set the RTC LPC_RTC->SEC = timeinfo.tm_sec; LPC_RTC->MIN = timeinfo.tm_min; LPC_RTC->HOUR = timeinfo.tm_hour; LPC_RTC->DOM = timeinfo.tm_mday; LPC_RTC->MONTH = timeinfo.tm_mon + 1; LPC_RTC->YEAR = timeinfo.tm_year + 1900; // Restart clock LPC_RTC->CCR &= ~((uint32_t)2); } int dm_isenabled_rtc(void) { return(((LPC_RTC->CCR) & 0x01) != 0); }