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我正试图用键盘为海康威视读卡器编写一个库。 Here is some information about that reader。我还以Arduino库为例。该库适用于读取数据并使用相同的外部中断引脚:https://github.com/monkeyboard/Wiegand-Protocol-Library-for-ArduinoAtmega328 Wiegand协议实现
我在Google中搜索了很多,但没有找到可用的C示例。我从零写了我的代码,但它没有奏效。我可以看到一些输出数据,但它与真实数据没有任何共同之处。 所以这里是例子:我把Card放在Wiegand 26协议的Reader上,ID为0x1532FC,Output为0x94F8。
也许有人会帮我找到一个错误。
因此,这里是我的代码:
#define F_CPU 16000000
#include <avr/io.h>
#include "c:\users\irakli\Documents\Atmel Studio\7.0\wiegand C\wiegand C\UART.h"
#include <avr/interrupt.h>
#include <util/delay.h>
`unsigned long CardID = 0; // DATA
int bit_count= 0; //Wiegand type
int Send;
int DataArray[26] = {};
int *ptr = DataArray;
void WiegandReadD0(void) // INT0 Port PD3
{
bit_count++;
CardID = CardID << 1;
_delay_ms(1);
}
void WiegandReadD1(void) // INT1 Port PD4
{
bit_count++;
CardID = CardID << 1;
CardID = CardID + 0x01;
_delay_ms(1);
}
void WiegandSendD0(void) // PD5 Send Data0
{
PORTD = (0 << 5);
_delay_us(20);
PORTD = (1 << 5);
_delay_ms(2);
}
void WiegandSendD1(void) // PD6 Send Data1
{
PORTD = (0 << 6);
_delay_us(20);
PORTD = (1 << 6);
_delay_ms(2);
}
void Send_Data()
{
unsigned long data;
int type;
data = CardID;
type = bit_count;
for(int i = 0; i <= (type - 1); i++) // Decimal To Binary Array
{
if(((1 << i) & data) != 0)
{
*(ptr + i) = 1;
}
else
{
*(ptr + i) = 0;
}
} // END Of FOR
for(int i = (type - 1); i >= 0; --i) //Data Send Function
{
Send = *(ptr + i);
if(Send == 1)
WiegandSendD1();
if(Send == 0)
WiegandSendD0();
}
}
int main(void)
{
Uart_init();
sei();
DDRD = (0 << 3) | (0 << 4); // Input Ports For Reading Wiegand
PORTD = (0 << 3) | (0 << 4); // No Pull-up
EIMSK = (1 << INT0) | (1 << INT1); // Enable External Interrupts On PD3
// and PD4
DDRD = (1 << 5) | (1 << 6); // Output Ports For Sending Wiegand. PD5 =
// D0, PD6 = D1.
PORTD = (1 << 5) | (1 << 6); // PUll-ups Enable
while (1)
{
_delay_ms(1000);
printf("Card ID = %ld\t Card HEX = %.x\t Wiegand Type = %d\t\n",CardID, CardID, bit_count);
_delay_ms(500);
Send_Data();
CardID = 0;
bit_count = 0;
}
}
ISR(INT0_vect)
{
WiegandReadD0();
}
ISR(INT1_vect)
{
WiegandReadD1();
}`
如果需要更多的详细信息,请写信。