power_drv.c

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00013 
00014 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
00015  *
00016  * Redistribution and use in source and binary forms, with or without
00017  * modification, are permitted provided that the following conditions are met:
00018  *
00019  * 1. Redistributions of source code must retain the above copyright notice,
00020  * this list of conditions and the following disclaimer.
00021  *
00022  * 2. Redistributions in binary form must reproduce the above copyright notice,
00023  * this list of conditions and the following disclaimer in the documentation
00024  * and/or other materials provided with the distribution.
00025  *
00026  * 3. The name of Atmel may not be used to endorse or promote products derived
00027  * from this software without specific prior written permission.
00028  *
00029  * 4. This software may only be redistributed and used in connection with an Atmel
00030  * AVR product.
00031  *
00032  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
00033  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00034  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
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00043 
00044 //_____ I N C L U D E S ____________________________________________________
00045 
00046 #include "config.h"
00047 #include "power_drv.h"
00048 
00049 
00050 //_____ D E C L A R A T I O N ______________________________________________
00051 
00052 
00057 #ifndef __GNUC__
00058 // Ignored if IAR compiler optimization option "Always do cross call optimization" is enabled
00059 #pragma optimize=none 
00060 void Set_cpu_prescaler(U8 x)
00061 {
00062    U8 save_int=Get_interrupt_state();
00063    Disable_interrupt();
00064    CLKPR=(1<<CLKPCE);
00065    CLKPR=x;
00066    if(save_int) { Enable_interrupt(); }
00067 }
00068 #endif
00069 
00070 
00073 void set_power_down_mode(void)
00074 {
00075    Setup_power_down_mode();
00076    Sleep_instruction();
00077 }
00078 
00079 
00082 void set_idle_mode(void)
00083 {
00084    Setup_idle_mode();
00085    Sleep_instruction();
00086 }
00087 
00088 
00091 void set_adc_noise_reduction_mode(void)
00092 {
00093    Setup_adc_noise_reduction_mode();
00094    Sleep_instruction();
00095 }
00096 
00097 
00100 void set_power_save_mode(void)
00101 {
00102    Setup_power_save_mode();
00103    Sleep_instruction();
00104 }
00105 
00106 
00109 void set_standby_mode(void)
00110 {
00111    Setup_standby_mode();
00112    Sleep_instruction();
00113 }
00114 
00115 
00118 void set_ext_standby_mode(void)
00119 {
00120    Setup_ext_standby_mode();
00121    Sleep_instruction();
00122 }
00123 
00124 
00127 void Clock_switch_external(void)
00128 {
00129   Enable_external_clock();
00130   while (!External_clock_ready());
00131   Select_external_clock();
00132   Disable_RC_clock();
00133 }
00134 
00135 
00138 void Clock_switch_internal(void)
00139 {
00140   Enable_RC_clock();
00141   while (!RC_clock_ready());
00142   Select_RC_clock();
00143   Disable_external_clock();
00144 }

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