?? level3.c
字號:
/*
*-------------------------------------------------------------------------------
*-- RCSId: $Id: level3.c,v 1.50 2005-04-12 14:54:27+02 mjg Exp mjg $
*-- $Name: $
*-------------------------------------------------------------------------------
*-- level3.c - High level data transformations and main loop
*-------------------------------------------------------------------------------
*-- $Log: level3.c,v $
*-- Revision 1.50 2005-04-12 14:54:27+02 mjg
*-- switch to normal mode
*--
*-- Revision 1.49 2005-03-21 17:01:04+01 mjg
*-- Uplink timing tuned
*--
*-- Revision 1.47 2005-02-28 13:35:30+01 mjg
*-- EM4006 uid crc check
*--
*-- Revision 1.46 2005-02-25 11:23:13+01 mjg
*-- EM4006 extraction routine, no crc check
*--
*-- Revision 1.45 2005-02-25 11:19:41+01 mjg
*-- EM4006 extraction routine, no crc check
*--
*-- Revision 1.44 2005-02-25 09:12:50+01 mjg
*-- EM4006 decode mode
*--
*-- Revision 1.43 2005-02-23 16:04:15+01 mjg
*-- EM4006 raw mode, not tested
*--
*-- Revision 1.42 2005-02-21 18:13:55+01 mjg
*-- hubneme IV
*--
*-- Revision 1.41 2005-02-21 10:56:31+01 mjg
*-- hubneme III
*--
*-- Revision 1.40 2005-02-21 10:47:42+01 mjg
*-- hubneme III
*--
*-- Revision 1.38 2005-01-19 15:53:51+01 mjg
*-- EM4034 EAS off support corrected
*--
*-- Revision 1.37 2004-12-13 08:49:33+01 mjg
*-- compiler sensitive code in HWTransaction
*--
*-- Revision 1.36 2004-12-07 17:22:17+01 mjg
*-- version 4 of 1TS ready
*--
*-- Revision 1.35 2004-12-07 15:22:21+01 mjg
*-- 1.33 strikes back!
*--
*-- Revision 1.33 2004-06-30 12:47:41+02 mjg
*-- key selection extension
*--
*-- Revision 1.32 2004-05-31 16:41:51+02 mjg
*-- single carrier too slow caused CRC errors, speeded up
*--
*-- Revision 1.31 2004-05-21 09:29:37+02 mjg
*-- startup inventory, to toggle EAS off for EM4034
*--
*-- Revision 1.30 2004-05-10 09:23:28+02 mjg
*-- to toggle EAS off
*--
*-- Revision 1.29 2004-05-07 08:10:25+02 mjg
*-- HW auth passed
*--
*-- Revision 1.28 2004-04-27 17:05:44+02 mjg
*-- to better test the design
*--
*-- Revision 1.27 2004-04-21 15:48:47+02 mjg
*-- FSK low data rate support
*--
*-- Revision 1.26 2004-04-21 13:05:21+02 mjg
*-- EOF ignored because of FSK and 4034 support
*--
*-- Revision 1.25 2004-04-13 11:21:39+02 mjg
*-- sync
*--
*-- Revision 1.24 2004-03-25 16:09:19+01 mjg
*-- to add delayed EOF feature
*--
*-- Revision 1.23 2004-03-25 15:13:23+01 mjg
*-- to add delayed EOF feature
*--
*-- Revision 1.22 2004-03-24 13:35:36+01 mjg
*-- error msg needs better handling
*--
*-- Revision 1.21 2004-03-15 16:59:06+01 mjg
*-- to check SPI
*--
*-- Revision 1.20 2004-02-16 08:04:11+01 mjg
*-- preliminary CD
*--
*-- Revision 1.18 2004-02-10 19:24:40+01 mjg
*-- FSK to add valid bits
*--
*-- Revision 1.17 2004-02-10 18:30:46+01 mjg
*-- dual carrier raw, decoded 1st try
*--
*-- Revision 1.16 2004-02-09 18:03:33+01 mjg
*-- raw dual carrier capture
*--
*-- Revision 1.15 2004-02-08 12:30:52+01 mjg
*-- Decode var removed, FSK polling added
*--
*-- Revision 1.14 2004-02-07 14:59:47+01 mjg
*-- Response parsing correction
*--
*-- Revision 1.13 2004-02-03 08:42:52+01 mjg
*-- hubneme II
*--
*-- Revision 1.12 2004-02-03 07:24:37+01 mjg
*-- fwd debug implemented and removed from being compiled
*--
*-- Revision 1.11 2004-01-19 14:08:05+01 mjg
*-- hubneme I
*--
*-- Revision 1.10 2004-01-14 14:57:35+01 mjg
*-- to Invenotry version 2
*--
*-- Revision 1.9 2003-12-11 17:37:20+01 mjg
*-- yes
*--
*-- Revision 1.8 2003-12-11 16:33:41+01 mjg
*-- 1TS gives too much responses, stayquiet ?
*--
*-- Revision 1.7 2003-12-10 08:15:48+01 mjg
*-- to add dbg code
*--
*-- Revision 1.6 2003-12-09 12:43:01+01 mjg
*-- to 1TS inventory
*--
*-- Revision 1.5 2003-12-09 12:42:44+01 mjg
*-- to 1TS inventory
*--
*-- Revision 1.3 2003-12-05 08:38:56+01 mjg
*-- write update
*--
*-- Revision 1.2 2003-12-04 15:58:08+01 mjg
*-- to write
*--
*-- Revision 1.1 2003-12-01 08:18:04+01 mjg
*-- single carrier low drate level1 ok
*--
*-- Revision 1.0 2003-11-26 09:01:02+01 mjg
*-- Initial revision
*--
*-------------------------------------------------------------------------------
*/
#include <avr/io.h>
#include <inttypes.h>
#include <avr/interrupt.h>
#include <avr/signal.h>
#include <avr/wdt.h>
#include "level4.h"
#include "level3.h"
#include "level2.h"
#include "level1.h"
//--------------------------------------------------------------
//global variables
uint8_t maxCaptureTimeLow; //lower part of current maximum capture time (used to initialise TCNT1)
uint8_t maxCaptureTimeHi; //upper part of current maximum capture time (expected value 0xFF or 0xFE only)
//--------------------------------------------------------------
//local declarations
#define STD_WAIT 145 //~318us = (145+13)x32 @ 16MHz , 13x32 uC clocks is a setup reserve
uint8_t clean_data_cnt; //clean response data length
uint16_t maxTGeneral; //current datarate maximum response capture time
uint16_t maxTwa1ee; //
uint8_t signed_crc; //flag of signed response
uint8_t authSelectFlag; //disable selection before HW Authentication
void SendCaptureData( uint8_t cmd, uint8_t ack );
void Compute_Timeouts( uint8_t flags );
uint8_t Inventory(void);
uint8_t HW_Authentication(void);
uint8_t ToggleEAS(void);
uint8_t GeneralRead(void);
uint8_t GeneralWrite(void);
void RF_Reset(void);
uint8_t SwitchToNormalMode(void);
//--------------------------------------------------------------
// main loop routine
//--------------------------------------------------------------
void main_receiver(void) {
uint8_t check_stat;
uint8_t fwd_bit_count;
uint8_t i;
uint16_t pom;
if (watchdog_reset != 0) {
FormatResponse_Short( 0x00, ERR_ASIC_ANTENNA_FAULT );
} else {
decode_number = 2;
forward_link_type = 0x01; //default value = 1 from 4 forward link
}
while (21) { // infinite loop
wdt_reset(); // reset the watchdog
if((check_stat = CheckIncommingMessage()) != UART_MESSAGE_OK) // check any incoming message
FormatResponse_Short( 0, check_stat );
else { // no error, processing command
forward_ptr = data_buffer; // initialize fwd pointer
fwd_bit_count = 0;
switch (uart_command) {
//...............................................................................................
case 0x83 : //1TS Inventory
Inventory();
Wait(512);
FormatResponse_Short( uart_command, Inventory() );
break;
//...............................................................................................
case 0x88 : //general read command
i = GeneralRead();
if (debug_mode == 0) {
if (clean_data_cnt == 0)
SendCaptureData( uart_command, i );
else
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
} else
if (debug_mode == 2)
SendCaptureData( uart_command, ERR_EM4035_CAPT_DATA );
else
FormatResponse_Data( uart_command, ERR_EM4035_RAW_DATA, capture_cnt, (uint8_t*)capture.capture_data );
break;
//...............................................................................................
case 0x89 : //HW Authentication
authSelectFlag = 0;
i = HW_Authentication();
if (i == UART_MESSAGE_OK)
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
else
SendCaptureData( uart_command, i );
break;
//...............................................................................................
case 0x8A : //Toggle EAS
i = ToggleEAS();
if (i == UART_MESSAGE_OK)
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
else
SendCaptureData( uart_command, i );
break;
//...............................................................................................
case 0x8B : //Startup Invenotry
//RF Reset
RF_Reset();
i = GeneralRead();
if (debug_mode == 0) {
if (clean_data_cnt == 0)
SendCaptureData( uart_command, i );
else
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
} else
if (debug_mode == 2)
SendCaptureData( uart_command, ERR_EM4035_CAPT_DATA );
else
FormatResponse_Data( uart_command, ERR_EM4035_RAW_DATA, capture_cnt, (uint8_t*)capture.capture_data );
break;
//...............................................................................................
case 0x8C : //HW Authentication without Select
authSelectFlag = 1;
i = HW_Authentication();
if (i == UART_MESSAGE_OK)
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
else
SendCaptureData( uart_command, i );
break;
//...............................................................................................
case 0x8D : //Switch to Normal mode
i = SwitchToNormalMode();
if (clean_data_cnt == 0) {
SendCaptureData( uart_command, i );
} else {
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
}
break;
//...............................................................................................
case 0x90 : //general write command
i = GeneralWrite();
if (debug_mode == 0) {
if ((i == UART_MESSAGE_OK) && (clean_data_cnt != 0)) {
FormatResponse_Data( uart_command, i, clean_data_cnt, (uint8_t*)data_buffer );
} else {
SendCaptureData( uart_command, i );
}
}
else
if (debug_mode == 2)
SendCaptureData( uart_command, ERR_EM4035_CAPT_DATA );
else
FormatResponse_Data( uart_command, ERR_EM4035_RAW_DATA, capture_cnt, (uint8_t*)capture.capture_data );
break;
//...............................................................................................
case 0x98 : //Read EM4006 UID
EM4006_bitRate = (19 * (uint32_t)EM4006_bitRate) / 16;
pom = EM4006_bitRate * 6; //capture for max 384 bit periods
EM4006_bitRate >>= 3; //T1 runs at clk/8 due to full bitrate range
ClearCaptureBuffers();
maxCaptureTimeLow = (uint8_t)pom;
maxCaptureTimeHi = pom >> 8;
Capture(5);
if (debug_mode == 0) {
clean_data_cnt = 0;
i = Extract_EM4006( capture_cnt );
if (i == UART_MESSAGE_OK)
FormatResponse_Data( uart_command, UART_MESSAGE_OK, 10, (uint8_t*)data_buffer );
else
SendCaptureData( uart_command, i );
}
else
if (debug_mode == 2)
SendCaptureData( uart_command, UART_MESSAGE_OK );
else
FormatResponse_Data( uart_command, UART_MESSAGE_OK, capture_cnt, (uint8_t*)capture.capture_data );
break;
//...............................................................................................
case 0xF0 : //RF reset using SPI configuration word
WriteSPI( write_4094_low & 0xFFFE, write_4094_hi );
FormatResponse_Short( uart_command, 0x00 );
wdt_disable();
i = write_tag_memory_delay;
while (i-->0) {
Wait(16384);
}
wdt_enable(0x7);
WriteSPI( write_4094_low | 1, write_4094_hi );
break;
//...............................................................................................
case 0x00 : //no command
continue;
//...............................................................................................
default:
FormatResponse_Short( 0, ERR_UART_UNKNOWN_CMD );
break;
}
uart_command = 0;
}
}
}
//--------------------------------------------------------------
//compute the timeouts according to the flag byte
//
void Compute_Timeouts(uint8_t flags) {
register uint16_t pom;
register uint16_t corr;
pom = expectedResponseLen * 16; //512RF/32 = 16 TCNT0 pulses per bit
pom += 128; //reserve
corr = expectedResponseLen / 2 + 2; //correction for dual carrier
if ((flags & 2) == 0)
pom *= 4;
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -