ENC28J60+RC522 ，webserver与RFID共同使用问题。

xvanzhou

我现在在尝试让ENC28J60 与RC522 同时使用，用SPI模式。但是始终不成功，只有RC522运行，web一直刷不出来。分开来是都是正常运行的。

源程序如下，RFID片选为4，enc28J60片选为10；

1. #include <EtherCard.h>
   
2. #include <SPI.h>
   
3. #include <MFRC522.h>
   
4. 
   
5. #define SS_PIN 4
   
6. #define RST_PIN 9
   
7. 
   
8. static byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
   
9. static byte myip[] = { 192,168,150,203 };
   
10. 
    
11. byte Ethernet::buffer[500];
    
12. BufferFiller bfill;
    
13. 
    
14. MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class
    
15. 
    
16. MFRC522::MIFARE_Key key;
    
17. 
    
18. // Init array that will store new NUID
    
19. byte nuidPICC[3];
    
20. 
    
21. void setup () {
    
22.   if (ether.begin(sizeof Ethernet::buffer, mymac,10) == 0)
    
23.     Serial.println(F("Failed to access Ethernet controller"));
    
24.   ether.staticSetup(myip);
    
25.   
    
26.   Serial.begin(9600);
    
27.   SPI.begin(); // Init SPI bus
    
28.   rfid.PCD_Init(); // Init MFRC522
    
29. 
    
30.   for (byte i = 0; i < 6; i++) {
    
31.     key.keyByte[i] = 0xFF;
    
32.    
    
33.   Serial.println(F("This code scan the MIFARE Classsic NUID."));
    
34.   Serial.print(F("Using the following key:"));
    
35.   printHex(key.keyByte, MFRC522::MF_KEY_SIZE);
    
36.   }
    
37. pinMode (SS_PIN,OUTPUT);
    
38.     digitalWrite (SS_PIN,HIGH);
    
39.   pinMode (10,OUTPUT);
    
40.     digitalWrite (10,HIGH);
    
41. 
    
42. }
    
43. 
    
44. static word homePage() {
    
45.   long t = millis() / 1000;
    
46.   word h = t / 3600;
    
47.   byte m = (t / 60) % 60;
    
48.   byte s = t % 60;
    
49.   bfill = ether.tcpOffset();
    
50.   bfill.emit_p(PSTR(
    
51.     "HTTP/1.0 200 OK\r\n"
    
52.     "Content-Type: text/html\r\n"
    
53.     "Pragma: no-cache\r\n"
    
54.     "\r\n"
    
55.     "<meta http-equiv='refresh' content='1'/>"
    
56.     "<title>RBBB server</title>"
    
57.     "<h1>$D$D:$D$D:$D$D</h1>"),
    
58.       h/10, h%10, m/10, m%10, s/10, s%10);
    
59.   return bfill.position();
    
60.   
    
61.   }
    
62. 
    
63. 
    
64. 
    
65. void loop () {
    
66.   
    
67.   digitalWrite (10,LOW);
    
68.   digitalWrite (SS_PIN,HIGH);
    
69.   word len = ether.packetReceive();
    
70.   word pos = ether.packetLoop(len);
    
71.   
    
72.   if (pos)  // check if valid tcp data is received
    
73.     ether.httpServerReply(homePage()); // send web page data
    
74.    
    
75.     delay (100);
    
76.    //RFID部分
    
77.   digitalWrite (10,HIGH);
    
78.   digitalWrite (SS_PIN,LOW);
    
79.   // Look for new cards
    
80.   if ( ! rfid.PICC_IsNewCardPresent())
    
81.     return;
    
82. 
    
83.   // Verify if the NUID has been readed
    
84.   if ( ! rfid.PICC_ReadCardSerial())            //先查到这里的库函数1
    
85.     return;
    
86. 
    
87.   Serial.print(F("PICC type: "));
    
88.   MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
    
89.   Serial.println(rfid.PICC_GetTypeName(piccType));
    
90. 
    
91.   // Check is the PICC of Classic MIFARE type
    
92.   if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&  
    
93.     piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
    
94.     piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
    
95.     Serial.println(F("Your tag is not of type MIFARE Classic."));
    
96.     return;
    
97.   }
    
98. 
    
99.   if (rfid.uid.uidByte[0] != nuidPICC[0] ||
    
100.     rfid.uid.uidByte[1] != nuidPICC[1] ||
     
101.     rfid.uid.uidByte[2] != nuidPICC[2] ||
     
102.     rfid.uid.uidByte[3] != nuidPICC[3] ) {
     
103.     Serial.println(F("A new card has been detected."));
     
104. 
     
105.     // Store NUID into nuidPICC array
     
106.     for (byte i = 0; i < 4; i++) {
     
107.       nuidPICC[i] = rfid.uid.uidByte[i];
     
108.       
     
109.       delay (100);
     
110.     }
     
111.    
     
112.    
     
113.     Serial.println(F("The NUID tag is:"));
     
114.     Serial.print(F("In hex: "));
     
115.     printHex(rfid.uid.uidByte, rfid.uid.size);
     
116.     Serial.println();
     
117.     Serial.print(F("In dec: "));
     
118.     printDec(rfid.uid.uidByte, rfid.uid.size);
     
119.     Serial.println();
     
120.   }
     
121.   else Serial.println(F("Card read previously."));
     
122. 
     
123.   // Halt PICC
     
124.   rfid.PICC_HaltA();
     
125.   delay (100);
     
126.   // Stop encryption on PCD
     
127.   rfid.PCD_StopCrypto1();
     
128.   delay (100);
     
129. }
     
130. 
     
131. 
     
132. /**
     
133. * Helper routine to dump a byte array as hex values to Serial.
     
134. */
     
135. void printHex(byte *buffer, byte bufferSize) {
     
136.   for (byte i = 0; i < bufferSize; i++) {
     
137.     Serial.print(buffer[i] < 0x10 ? " 0" : " ");
     
138.     Serial.print(buffer[i], HEX);
     
139.   delay (100);
     
140.   }
     
141. }
     
142. 
     
143. /**
     
144. * Helper routine to dump a byte array as dec values to Serial.
     
145. */
     
146. void printDec(byte *buffer, byte bufferSize) {
     
147.   for (byte i = 0; i < bufferSize; i++) {
     
148.     Serial.print(buffer[i] < 0x10 ? " 0" : " ");
     
149.     Serial.print(buffer[i], DEC);
     
150.     delay (100);
     
151.   }
     
152. }

复制代码

如上，确实已经片选置高置低了，怕是因为buffer的原因，也用了delay，但是还是没法同时运行。具体是什么情况？怎么解决，可QQ私聊，酬谢
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