/* * Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors * to the MC1322x project (http://mc1322x.devl.org) * 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 Institute 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 INSTITUTE 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 INSTITUTE 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 file is part of libmc1322x: see http://mc1322x.devl.org * for details. * * $Id: sleep.c,v 1.1 2010/06/10 14:55:39 maralvira Exp $ */ #include <mc1322x.h> #include <board.h> #include "tests.h" #include "config.h" void main(void) { uart_init(INC,MOD,SAMP); *mem32(0x00401ffc) = 0x01234567; *mem32(0x00407ffc) = 0xdeadbeef; *mem32(0x0040fffc) = 0xface00ff; *mem32(0x00410000) = 0xabcd0123; putstr("sleep test\n\r"); putstr("0x00401ffc: "); put_hex32(*mem32(0x00401ffc)); putstr("\r\n"); putstr("0x00407ffc: "); put_hex32(*mem32(0x00407ffc)); putstr("\r\n"); putstr("0x0040fffc: "); put_hex32(*mem32(0x0040fffc)); putstr("\r\n"); putstr("0x00410000: "); put_hex32(*mem32(0x00410000)); putstr("\r\n"); /* radio must be OFF before sleeping */ /* otherwise MCU will not wake up properly */ /* this is undocumented behavior */ // radio_off(); #if USE_32KHZ /* turn on the 32kHz crystal */ putstr("enabling 32kHz crystal\n\r"); /* you have to hold it's hand with this on */ /* once you start the 32xHz crystal it can only be stopped with a reset (hard or soft) */ /* first, disable the ring osc */ clear_bit(*CRM_RINGOSC_CNTL,0); /* enable the 32kHZ crystal */ set_bit(*CRM_XTAL32_CNTL,0); /* set the XTAL32_EXISTS bit */ /* the datasheet says to do this after you've check that RTC_COUNT is changing */ /* the datasheet is not correct */ set_bit(*CRM_SYS_CNTL,5); { static volatile uint32_t old; old = *CRM_RTC_COUNT; putstr("waiting for xtal\n\r"); while(*CRM_RTC_COUNT == old) { continue; } /* RTC has started up */ set_bit(*CRM_SYS_CNTL,5); putstr("32kHZ xtal started\n\r"); } #endif /* go to sleep */ // *CRM_WU_CNTL = 0; /* don't wake up */ *CRM_WU_CNTL = 0x1; /* enable wakeup from wakeup timer */ // *CRM_WU_TIMEOUT = 1875000; /* wake 10 sec later if doze */ #if USE_32KHZ *CRM_WU_TIMEOUT = 327680*2; #else *CRM_WU_TIMEOUT = 20000; /* wake 10 sec later if hibernate ring osc */ #endif /* hobby board: 2kHz = 11uA; 32kHz = 11uA */ // *CRM_SLEEP_CNTL = 1; /* hibernate, RAM page 0 only, don't retain state, don't power GPIO */ /* approx. 2kHz = 2.0uA */ /* hobby board: 2kHz = 18uA; 32kHz = 19uA */ // *CRM_SLEEP_CNTL = 0x41; /* hibernate, RAM page 0 only, retain state, don't power GPIO */ /* approx. 2kHz = 10.0uA */ /* hobby board: 2kHz = 20uA; 32kHz = 21uA */ // *CRM_SLEEP_CNTL = 0x51; /* hibernate, RAM page 0&1 only, retain state, don't power GPIO */ /* approx. 2kHz = 11.7uA */ /* hobby board: 2kHz = 22uA; 32kHz = 22.5uA */ // *CRM_SLEEP_CNTL = 0x61; /* hibernate, RAM page 0,1,2 only, retain state, don't power GPIO */ /* approx. 2kHz = 13.9uA */ /* hobby board: 2kHz = 24uA; 32kHz = 25uA */ *CRM_SLEEP_CNTL = 0x71; /* hibernate, all RAM pages, retain state, don't power GPIO */ /* approx. 2kHz = 16.1uA */ // *CRM_SLEEP_CNTL = 0xf1; /* hibernate, all RAM pages, retain state, power GPIO */ /* consumption depends on GPIO hookup */ // *CRM_SLEEP_CNTL = 2; /* doze , RAM page 0 only, don't retain state, don't power GPIO */ /* approx. 69.2 uA */ // *CRM_SLEEP_CNTL = 0x42; /* doze , RAM page 0 only, retain state, don't power GPIO */ /* approx. 77.3uA */ // *CRM_SLEEP_CNTL = 0x52; /* doze , RAM page 0&1 only, retain state, don't power GPIO */ /* approx. 78.9uA */ // *CRM_SLEEP_CNTL = 0x62; /* doze , RAM page 0,1,2 only, retain state, don't power GPIO */ /* approx. 81.2uA */ // *CRM_SLEEP_CNTL = 0x72; /* doze , all RAM pages, retain state, don't power GPIO */ /* approx. 83.4uA - possibly with periodic refresh*/ // *CRM_SLEEP_CNTL = 0xf2; /* doze , all RAM pages, retain state, power GPIO */ /* consumption depends on GPIO hookup */ /* wait for the sleep cycle to complete */ while((*CRM_STATUS & 0x1) == 0) { continue; } /* write 1 to sleep_sync --- this clears the bit (it's a r1wc bit) and powers down */ *CRM_STATUS = 1; /* asleep */ /* wait for the awake cycle to complete */ while((*CRM_STATUS & 0x1) == 0) { continue; } /* write 1 to sleep_sync --- this clears the bit (it's a r1wc bit) and finishes wakeup */ *CRM_STATUS = 1; putstr("\n\r\n\r\n\r"); putstr("0x00401ffc: "); put_hex32(*mem32(0x00401ffc)); putstr("\r\n"); putstr("0x00407ffc: "); put_hex32(*mem32(0x00407ffc)); putstr("\r\n"); putstr("0x0040fffc: "); put_hex32(*mem32(0x0040fffc)); putstr("\r\n"); putstr("0x00410000: "); put_hex32(*mem32(0x00410000)); putstr("\r\n"); *GPIO_PAD_DIR0 = LED_RED; #define DELAY 400000 volatile uint32_t i; while(1) { *GPIO_DATA0 = LED_RED; for(i=0; i<DELAY; i++) { continue; } *GPIO_DATA0 = 0; for(i=0; i<DELAY; i++) { continue; } }; }