ih_ee_ready.c

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00001 /*
00002  * Copyright (C) 2001-2005 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  */
00033 
00073 #include <dev/irqreg.h>
00074 
00079 
00080 static int AvrEepromRdyIrqCtl(int cmd, void *param);
00081 
00082 IRQ_HANDLER sig_EEPROM_READY = {
00083 #ifdef NUT_PERFMON
00084     0,                          /* Interrupt counter, ir_count. */
00085 #endif
00086     NULL,                       /* Passed argument, ir_arg. */
00087     NULL,                       /* Handler subroutine, ir_handler. */
00088     AvrEepromRdyIrqCtl          /* Interrupt control, ir_ctl. */
00089 };
00090 
00104 static int AvrEepromRdyIrqCtl(int cmd, void *param)
00105 {
00106     int rc = 0;
00107     u_int *ival = (u_int *) param;
00108     int enabled = bit_is_set(EECR, EERIE);
00109 
00110     /* Disable interrupt. */
00111     cbi(EECR, EERIE);
00112 
00113     switch (cmd) {
00114     case NUT_IRQCTL_INIT:
00115     case NUT_IRQCTL_DISABLE:
00116         enabled = 0;
00117         break;
00118     case NUT_IRQCTL_ENABLE:
00119         enabled = 1;
00120         break;
00121     case NUT_IRQCTL_GETPRIO:
00122         *ival = 0;
00123         break;
00124 #ifdef NUT_PERFMON
00125     case NUT_IRQCTL_GETCOUNT:
00126         *ival = (u_int) sig_EEPROM_READY.ir_count;
00127         sig_EEPROM_READY.ir_count = 0;
00128         break;
00129 #endif
00130     default:
00131         rc = -1;
00132         break;
00133     }
00134 
00135     /* Enable interrupt. */
00136     if (enabled) {
00137         sbi(EECR, EERIE);
00138     }
00139     return rc;
00140 }
00141 
00142 #if defined(SIG_EEPROM_READY) || defined(iv_EE_READY)
00143 
00147 #ifdef __IMAGECRAFT__
00148 #pragma interrupt_handler SIG_EEPROM_READY:iv_EE_READY
00149 #endif
00150 NUTSIGNAL(SIG_EEPROM_READY, sig_EEPROM_READY)
00151 #else
00152 
00156 #ifdef __IMAGECRAFT__
00157 #pragma interrupt_handler SIG_EEPROM:iv_EE_READY
00158 #endif
00159 NUTSIGNAL(SIG_EEPROM, sig_EEPROM_READY)
00160 #endif
00161 

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