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hello folk's (excuse me for my english mistakes, please :) i have a problem in wakeup from powerdown using RTC. i set INTWAKE = 0x8002 (i use also EINT1 (p014 -boot) to wakeup, and this is running ok) i use the 32Khz quartz for RTC and during normal operation RTC interrupt is running correctly, but putting in powerdown (PCON = 2) RTC interrupt do not wakeup the processor. i'm search my mistake , but for now i have not found the solution. Someone have suggestion idea? thank's to all. Artur |
lpc2138 wakeup from rtc
Started by ●February 28, 2005
Reply by ●March 1, 20052005-03-01
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i have found a trick. from pdf for lpc2138 - preliminary release of 22 november 2004 Table 9: Interrupt Wakeup Register (INTWAKE - 0xE01FC144) EXTWAKE Function Description Reset Value 0 EXTWAKE0 When one, assertion of EINT0 will wake up the processor from Power Down mode. 0 1 EXTWAKE1 When one, assertion of EINT1 will wake up the processor from Power Down mode. 0 2 EXTWAKE2 When one, assertion of EINT2 will wake up the processor from Power Down mode. 0 3 EXTWAKE3 When one, assertion of EINT3 will wake up the processor from Power Down mode. 0 13:4 Reserved Reserved, user software should not write ones to reserved bits. The value read from a reserved bit is not defined. 0 14 BODWAKE When one, BOD interrupt will wake up the processor from Power Down mode. 15 RTCWAKE When one, assertion of an RTC interrupt will wake the processor from Power Down mode. using INTWAKE = 0x8000; RTC do not wake up the processor using INTWAKE = 0x80; // one of reserved bits 4..13 RTC wakeup the processor do i have misunderstand somthing?? ok, for today i'm happy and go on . thank's to all Artur ==================================================================== --- In , "arturo tramontini" <a.t@t...> wrote: > > hello folk's (excuse me for my english mistakes, please :) > > i have a problem in wakeup from powerdown using RTC. > > i set INTWAKE = 0x8002 > > (i use also EINT1 (p014 -boot) to wakeup, and this is running ok) > > i use the 32Khz quartz for RTC and during normal operation RTC > interrupt is running correctly, but putting in powerdown (PCON = 2) > RTC interrupt > do not wakeup the processor. > > i'm search my mistake , but for now i have not found the solution. > > Someone have suggestion idea? > > thank's to all. > Artur |
