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trunk/NfcEmul/nfcemulator.h

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+/*****************************************************************************
+Written and Copyright (C) by Nicolas Kruse
+
+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.
+*****************************************************************************/
+
+//#define F_CPU 13560000
+//#define F_CPU 22000000
+
+//For ATiny*4:
+#define AIN1_PORT 2       //Port for OC0A on ATiny*4 is PB0
+#define AIN1_PRNG PORTA   //Port for OC0A on ATiny*4 is PB0
+
+//For ATiny*5:
+//#define AIN1_PORT 1      //Port for OC0A on ATiny*5 is PB2
+//#define AIN1_PRNG PORTB  //Port for OC0A on ATiny*4 is PB0
+
+#define RFID_FREQU 13560000UL
+#define CLC_PBIT (uint16_t)(128.0 * F_CPU / RFID_FREQU + 0.5)
+#define CMIN CLC_PBIT * 3 / 4
+#define CLCS CLC_PBIT * 5 / 4
+#define CLCM CLC_PBIT * 7 / 4
+#define CLCL CLC_PBIT * 9 / 4
+
+#define FDT_DELAY_BD9 (uint16_t)(9.0 * 128 * F_CPU / RFID_FREQU - 1) //Nr of cycles-1 for 9 bit durations
+#define FDT_DELAY_BIT0 (FDT_DELAY_BD9 + 20 - CLCL)
+#define FDT_DELAY_BIT1 (FDT_DELAY_BD9 + 84 - CLCL)
+
+#define SUBC_OVF (uint8_t)(F_CPU / 847500 / 2 - 1) //847500 Hz Subcarrier
+
+#define S_IDLE 0
+#define S_READY 1
+#define S_ACTIVE 2
+#define S_HALT 8
+#define S_READY_H 9
+#define S_ACTIVE_H 10
+
+void setupNfcEmulator(uint8_t *storage, uint16_t storageSize);
+void checkForNfcReader();