liang brain
LibPN532 for mbed sample - Read Tag Uid
Fork of
PN532_ReadUid
by 
dotnfc Tang
Diff: main.cpp
- Revision:
- 1:18f5ba9fb718
- Parent:
- 0:54a12c4b19c2
--- 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()
{