LibPN532 for mbed sample - Read Tag Uid

Dependencies:   LibPN532 mbed

Fork of PN532_ReadUid by dotnfc Tang

Files at this revision

API Documentation at this revision

Comitter:
brainliang
Date:
Wed Oct 17 10:36:55 2018 +0000
Parent:
0:54a12c4b19c2
Commit message:
PN532_ReadUID

Changed in this revision

LibPN532.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
diff -r 54a12c4b19c2 -r 18f5ba9fb718 LibPN532.lib
--- a/LibPN532.lib	Tue Sep 13 06:18:59 2016 +0000
+++ b/LibPN532.lib	Wed Oct 17 10:36:55 2018 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/users/dotnfc/code/LibPN532/#b5922b3b3257
+https://os.mbed.com/users/zhangyx/code/LibPN532/#d8e57d5776b3
diff -r 54a12c4b19c2 -r 18f5ba9fb718 main.cpp
--- a/main.cpp	Tue Sep 13 06:18:59 2016 +0000
+++ b/main.cpp	Wed Oct 17 10:36:55 2018 +0000
@@ -12,26 +12,24 @@
 #include "PN532_SPI.h"
 #include "PN532_I2C.h"
 
-DigitalOut ledBrd (LED1);   // arducleo onboard led
-
-DigitalOut ledNFC (D9);     // status led
-
-DigitalOut rstNFC (D4);     // pn532 chip reset control
+DigitalOut ledBrd (PC_13);                                                      // 板载led
+DigitalOut ledNFC (PC_7);                                                       // 状态led
+DigitalOut rstNFC (PB_5);                                                       // pn532读卡器复位控制
 
 PwmOut buz(PB_1);
 
-Serial pc(SERIAL_TX, SERIAL_RX);
+Serial pc(PB_10, PB_11);                                                         //调试串口
 
 // ----------------------------------------- HSU
-//HardwareSerial pn532_hsu (PC_10, PC_11);
-//PN532_HSU pn532_if (pn532_hsu);
+HardwareSerial pn532_hsu (PA_2, PA_3);                                          //pn532连接的串口,需要时取消这两句注释
+PN532_HSU pn532_if (pn532_hsu);
 
 // ----------------------------------------- SPI
-SPI pn532_spi (SPI_MOSI, SPI_MISO, SPI_SCK);
-PN532_SPI pn532_if (pn532_spi, SPI_CS);
+//SPI pn532_spi (SPI_MOSI, SPI_MISO, SPI_SCK);                                  //pn532连接的SPI,需要时取消这两句注释
+//PN532_SPI pn532_if (pn532_spi, SPI_CS);
 
 // ----------------------------------------- I2C
-//I2C pn532_i2c (I2C_SDA, I2C_SCL);
+//I2C pn532_i2c (I2C_SDA, I2C_SCL);                                             //pn532连接的I2C,需要时取消这两句注释
 //PN532_I2C pn532_if (pn532_i2c);
 
 
@@ -39,7 +37,7 @@
 PN532 nfc(pn532_if);
 
 /*==============================================================================
- * \brief reset the pn532 chip
+ * \复位pn532数卡器
  */
 void reset_chip (void)
 {
@@ -50,7 +48,7 @@
 
 
 /*==============================================================================
- * \brief init the peripheral
+ * \初始化外设
  */
 void setup(void)
 {
@@ -59,10 +57,10 @@
     reset_chip ();
 
     uint32_t versiondata = 0;
-    pc.baud(115200);
-    pc.printf ("Hello!\n");
+    pc.baud(115200);                                                            //波特率设置为115200
+    pc.printf ("Hello!\r\n");
 
-    while (1) {
+    /*while (1) {
         nfc.begin();
         //nfc.SAMConfig();
         versiondata = nfc.getFirmwareVersion();
@@ -72,69 +70,73 @@
         } else {
             break;
         }
-    }
+    }*/
+    nfc.begin();
 
     // Got ok data, print it out!
-    pc.printf ("Found chip PN5%02X , Firmware ver. %d.%d\n",
+    pc.printf ("Found chip PN5%02X , Firmware ver. %d.%d\r\n",
                (versiondata>>24) & 0xFF,
                (versiondata>>16) & 0xFF,
                (versiondata>>8) & 0xFF);
 
-    // Set the max number of retry attempts to read from a card
-    // This prevents us from waiting forever for a card, which is
-    // the default behaviour of the PN532.
+    // 设置从卡片读取的c重复尝试的最大重试次数。
+    // 这使我们避免永远的等待读取一个卡,永远等待是PN532默认行为
     nfc.setPassiveActivationRetries(0xFF);
 
-    // configure board to read RFID tags
+    // 配置板读取RFID标签
     nfc.SAMConfig();
 
-    pc.printf ("\nWaiting for an ISO14443A card\n");
+    pc.printf ("\nWaiting for an ISO14443A card\r\n");
 }
 
 
 /*==============================================================================
- * \brief find a tag
+ * \发现标签
  */
 void loop(void)
 {
     bool success;
-    uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
-    uint8_t uidLength;  // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
+    uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };                                    // 存储返回UID值的缓冲
+    uint8_t uidLength;                                                          // UID的长度(根据ISO14443A卡类型4或7个字节)
 
-    // configure board to read RFID tags
+    // 配置板读取RFID标签
     nfc.SAMConfig();
 
-    // Wait for an ISO14443A type cards (Mifare, etc.).  When one is found
-    // 'uid' will be populated with the UID, and uidLength will indicate
-    // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
-    success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength);
+    // 等待一个ISO14443A类型的卡(如Mifare卡等). 当发现一个时,'uid'会被UID填充,并且uid长度会指出该uid是4字节(典型的Mifare)或7字节(超轻Mifare),100是超时时间(单位是毫秒,ms)
+    success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength, 100);
 
-    printf ("\n");
+    printf ("\r\n");
 
     if (success) {
-        tone (buz, 800);        // turn on the buzzer
-        ledNFC = 1;             // led on
+        tone (buz, 800);                                                        // 打开蜂鸣器
+        ledNFC = 1;                                                             // 打开led
 
-        pc.printf("Found a card!\n");
+        pc.printf("Found a card!\r\n");
+        
+//    nfc.writeGPIOP7((1<<PN532_GPIO_P71)); //把P70,P72设置为1,其余P7设置为0
+       nfc.writeGPIOP3((1<<PN532_GPIO_P31)|(1<<PN532_GPIO_P30));                //把P30,P32设置为1,其余P3设置为0
+       nfc.writeGPIOP7((1<<PN532_GPIO_P71));                                    //把P70,P72设置为1,其余P7设置为0
+ //   nfc.writeGPIOP7(0); //把P7全部设置为0
 
-        pc.printf("UID Length: %d bytes\n", uidLength);
+        pc.printf("UID Length: %d bytes\r\n", uidLength);
         pc.printf("UID Value: ");
 
         for (uint8_t i=0; i < uidLength; i++)
             pc.printf(" 0x%02X", uid[i]);
 
-        pc.printf("\n");
+        pc.printf("\r\n");
 
         wait_ms (100);
-        tone (buz, 0);          // turn off the buzzer
-
-        // wait until the card is taken away
-        while (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength, 500)) {}
+        tone (buz, 0);                                                          // 关闭蜂鸣器
 
-        ledNFC = 0;         // led off
+        // 等到移开卡时
+        while (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength, 500)) {}
+        nfc.writeGPIOP3(0);
+        nfc.writeGPIOP7(0);
+        ledNFC = 0;                                                             // 关闭led
     } else {
-        // PN532 probably timed out waiting for a card
-        pc.printf("\nTimed out waiting for a card\n");
+        // PN532可能等待卡片超时
+        pc.printf("\nTimed out waiting for a card\r\n");
         ledNFC = 0;
         wait_ms (200);
     }
@@ -142,7 +144,7 @@
 
 
 /*==============================================================================
- * \brief main entry
+ * \main入口
  */
 int main()
 {