t
Fork of mbed-dev by
targets/TARGET_NXP/TARGET_LPC15XX/rtc_api.c
- Committer:
- amithy
- Date:
- 2017-11-09
- Revision:
- 178:c26431f84b0d
- Parent:
- 149:156823d33999
File content as of revision 178:c26431f84b0d:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * 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. */ #include "rtc_api.h" #if DEVICE_RTC void rtc_init(void) { // Enables clock for RTC LPC_SYSCON->SYSAHBCLKCTRL0 |= (1 << 23); // Software reset LPC_RTC->CTRL |= 1; LPC_RTC->COUNT = 0; // Enabled RTC LPC_RTC->CTRL |= (1 << 7); // clear reset LPC_RTC->CTRL &= ~1; } void rtc_free(void) { LPC_SYSCON->SYSAHBCLKCTRL0 &= ~(1 << 23); LPC_RTC->CTRL &= ~(1 << 7); } int rtc_isenabled(void) { return (((LPC_RTC->CTRL) & 0x80) != 0); } time_t rtc_read(void) { return (time_t)LPC_RTC->COUNT; } void rtc_write(time_t t) { // Disabled RTC LPC_RTC->CTRL &= ~(1 << 7); // Set count LPC_RTC->COUNT = t; //Enabled RTC LPC_RTC->CTRL |= (1 << 7); } #endif