329 lines
9.0 KiB
C
329 lines
9.0 KiB
C
#include <string.h>
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#include <stdio.h>
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#include "DP1312EA_Config.h"
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#include "DP1312EA.h"
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#include "TypeA.h"
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#include "nfc_platform.h"
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// 定义卡片状态
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typedef enum {
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CARD_STATE_IDLE,
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CARD_STATE_READY,
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CARD_STATE_ACTIVE,
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CARD_STATE_HALT
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} CardState;
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// 卡片信息结构
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typedef struct {
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uint8_t uid[10]; // UID (4,7或10字节)
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uint8_t uid_len; // UID长度
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CardState state; // 卡片状态
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} CardInfo;
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// 系统参数
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#define MAX_CARDS 10 // 最大检测卡片数量
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CardInfo detectedCards[MAX_CARDS];
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uint8_t cardCount = 0;
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// 函数声明
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void DP1312EA_Config(void);
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uint8_t DP1312EA_Transceive(uint8_t *send, uint8_t sendLen, uint8_t *recv, uint8_t *recvLen);
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uint8_t DP1312EA_Request(uint8_t cmd, uint8_t *atq);
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uint8_t DP1312EA_Anticollision(uint8_t level, uint8_t *uid, uint8_t *uid_len);
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uint8_t DP1312EA_Select(uint8_t level, uint8_t *uid, uint8_t uid_len, uint8_t *sak);
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uint8_t DP1312EA_Halt(void);
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void DP1312EA_HandleCollision(uint8_t *uid, uint8_t uid_len, uint8_t level);
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void FindAllCards(void);
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int TypeA_AntiColl(void);
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// DP1312EA初始化
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void DP1312EA_Config(void) {
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DP1312EA_Reset();
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// 配置DP1312EA寄存器
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DP1312EA_PcdConfigISOType('A');
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DP1312EA_FieldOn();
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nfc_platform_sleep_ms(10);
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}
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// 发送和接收数据
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uint8_t DP1312EA_Transceive(uint8_t *send, uint8_t sendLen, uint8_t *recv, uint8_t *recvLen) {
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// 清除FIFO
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DP1312EA_WriteRawRC(0x01, DP1312EA_IDLE);
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DP1312EA_WriteRawRC(0x01, DP1312EA_MEM);
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// 写入发送数据
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DP1312EA_WriteFIFO(send, sendLen);
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// 启动传输
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DP1312EA_WriteRawRC(0x01, DP1312EA_TRANSCEIVE);
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DP1312EA_WriteRawRC(0x0D, 0x30); // 启用发送和接收
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// 等待传输完成
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uint16 timeout = 2000; // 超时时间
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while (!(DP1312EA_ReadRawRC(0x04) & 0x30) ){ // 等待TxIRq或RxIRq
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if (--timeout == 0) {
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DP1312EA_WriteRawRC(0x01, DP1312EA_IDLE); // 停止传输
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return 1; // 超时错误
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}
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//nfc_platform_sleep_ms(1);
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//Delay_us(100);
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}
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// 检查错误
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if (DP1312EA_ReadRawRC(0x06) & 0x13) { // 检查错误标志
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DP1312EA_WriteRawRC(0x01, DP1312EA_IDLE);
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return 2; // 通信错误
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}
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// 读取接收数据
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*recvLen = DP1312EA_ReadRawRC(0x0A); // FIFOLevel
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if (*recvLen > 0) {
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DP1312EA_ReadFIFO(recv, *recvLen);
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}
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DP1312EA_WriteRawRC(0x01, DP1312EA_IDLE);
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return 0; // 成功
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}
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// 请求阶段
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uint8_t DP1312EA_Request(uint8_t cmd, uint8_t *atq) {
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uint8_t response[2];
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uint8_t resLen = 2;
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uint8_t status = DP1312EA_Transceive(&cmd, 1, response, &resLen);
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if (status == 0 && resLen == 2) {
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atq[0] = response[0];
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atq[1] = response[1];
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return 1; // 成功
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}
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return 0; // 失败
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}
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// 防冲突函数
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uint8_t DP1312EA_Anticollision(uint8_t level, uint8_t *uid, uint8_t *uid_len) {
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uint8_t anticoll_cmd;
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uint8_t nvb;
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switch(level) {
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case 0:
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anticoll_cmd = PICC_ANTICOLL1;
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nvb = 0x20; // 32位
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break;
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case 1:
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anticoll_cmd = PICC_ANTICOLL2;
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nvb = 0x20; // 32位
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break;
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case 2:
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anticoll_cmd = PICC_ANTICOLL3;
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nvb = 0x20; // 32位
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break;
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default:
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return 0;
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}
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uint8_t sendBuf[2] = {anticoll_cmd, nvb};
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uint8_t recvBuf[10]; // 最大UID长度+1
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uint8_t recvLen = sizeof(recvBuf);
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uint8_t status = DP1312EA_Transceive(sendBuf, 2, recvBuf, &recvLen);
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if (status != 0 || recvLen < 5) { // 至少4字节UID+1字节BCC
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return 0; // 失败
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}
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// 检查冲突
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if (DP1312EA_ReadRawRC(0x06) & 0x08) { // CollErr标志
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return 2; // 冲突
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}
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// 计算BCC
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uint8_t bcc = 0;
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for (uint8_t i = 0; i < recvLen - 1; i++) {
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bcc ^= recvBuf[i];
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}
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if (bcc != recvBuf[recvLen-1]) {
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return 0; // BCC错误
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}
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// 复制UID
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*uid_len = recvLen - 1;
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memcpy(uid, recvBuf, *uid_len);
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return 1; // 成功
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}
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// 选择卡片
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uint8_t DP1312EA_Select(uint8_t level, uint8_t *uid, uint8_t uid_len, uint8_t *sak) {
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uint8_t select_cmd;
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switch(level) {
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case 0: select_cmd = SELECT_0; break;
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case 1: select_cmd = SELECT_1; break;
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case 2: select_cmd = SELECT_2; break;
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default: return 0;
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}
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uint8_t sendBuf[10]; // SEL + NVB + UID + BCC
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uint8_t sendLen = 0;
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sendBuf[sendLen++] = select_cmd;
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sendBuf[sendLen++] = 0x70; // NVB=64位
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uint8_t bcc = 0;
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for (uint8_t i = 0; i < uid_len; i++) {
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sendBuf[sendLen++] = uid[i];
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bcc ^= uid[i];
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}
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sendBuf[sendLen++] = bcc;
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uint8_t response[3];
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uint8_t resLen = sizeof(response);
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if (DP1312EA_Transceive(sendBuf, sendLen, response, &resLen) != 0 || resLen < 1) {
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return 0; // 失败
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}
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*sak = response[0];
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return 1; // 成功
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}
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// 休眠卡片
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uint8_t DP1312EA_Halt(void) {
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uint8_t halt_cmd[4] = {PICC_HALT, 0, 0, 0}; // CRC由DP1312EA计算
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uint8_t resLen = 0;
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return (DP1312EA_Transceive(halt_cmd, 4, NULL, &resLen) == 0);
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}
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// 处理冲突
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void DP1312EA_HandleCollision(uint8_t *uid, uint8_t uid_len, uint8_t level) {
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uint8_t coll_pos = DP1312EA_ReadRawRC(BitFramingReg) & 0x1F;
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uint8_t bit_pos = coll_pos % 8;
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uint8_t byte_pos = coll_pos / 8;
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// 确定冲突位的位置
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// uint8_t collision_byte = uid[byte_pos];
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// 尝试两种可能的值 (0和1)
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for (uint8_t bit_value = 0; bit_value <= 1; bit_value++) {
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// 创建新的UID分支
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uint8_t new_uid[10];
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memcpy(new_uid, uid, uid_len);
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// 设置冲突位的值
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if (bit_value) {
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new_uid[byte_pos] |= (1 << bit_pos);
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} else {
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new_uid[byte_pos] &= ~(1 << bit_pos);
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}
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// 尝试防冲突
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uint8_t status = DP1312EA_Anticollision(level, new_uid, &uid_len);
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if (status == 1) {
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// 成功获取UID
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uint8_t sak;
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if (DP1312EA_Select(level, new_uid, uid_len, &sak)) {
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// 检查SAK的UID完整标志
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if (sak & 0x04) {
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// UID完整，存储卡片
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if (cardCount < MAX_CARDS) {
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memcpy(detectedCards[cardCount].uid, new_uid, uid_len);
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detectedCards[cardCount].uid_len = uid_len;
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detectedCards[cardCount].state = CARD_STATE_ACTIVE;
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cardCount++;
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}
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// 使卡片休眠
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DP1312EA_Halt();
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} else {
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// UID不完整，进入下一级防冲突
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DP1312EA_HandleCollision(new_uid, uid_len, level + 1);
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}
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}
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} else if (status == 2) {
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// 仍有冲突，递归处理
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DP1312EA_HandleCollision(new_uid, uid_len, level);
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}
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}
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}
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// 完整的防冲突流程
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void FindAllCards(void) {
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cardCount = 0; // 重置卡片计数
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// 1. 发送REQA唤醒卡片
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uint8_t atq[2];
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if (!DP1312EA_Request(PICC_REQIDL, atq)) {
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return; // 没有卡片
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}
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// 2. 初始防冲突循环
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uint8_t uid[10];
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uint8_t uid_len;
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uint8_t status;
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while (cardCount < MAX_CARDS) {
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status = DP1312EA_Anticollision(0, uid, &uid_len);
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if (status == 1) {
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// 成功获取UID
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uint8_t sak;
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if (DP1312EA_Select(0, uid, uid_len, &sak)) {
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// 检查SAK的UID完整标志
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if (sak & 0x04) {
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// UID完整，存储卡片
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memcpy(detectedCards[cardCount].uid, uid, uid_len);
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detectedCards[cardCount].uid_len = uid_len;
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detectedCards[cardCount].state = CARD_STATE_ACTIVE;
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cardCount++;
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// 使卡片休眠
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DP1312EA_Halt();
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} else {
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// UID不完整，进入下一级防冲突
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DP1312EA_HandleCollision(uid, uid_len, 1);
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}
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}
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} else if (status == 2) {
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// 冲突发生，处理冲突
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DP1312EA_HandleCollision(uid, uid_len, 0);
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} else {
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// 没有更多卡片
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break;
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}
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}
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}
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// 主函数
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int TypeA_AntiColl(void) {
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DP1312EA_Config();
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while (1) {
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FindAllCards();
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if (cardCount > 0) {
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// 处理所有检测到的卡片
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for (uint8_t i = 0; i < cardCount; i++) {
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// 打印UID
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nfc_platform_log("Card %d UID: ", i);
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for (uint8_t j = 0; j < detectedCards[i].uid_len; j++) {
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nfc_platform_log("%02X ", detectedCards[i].uid[j]);
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}
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nfc_platform_log("\n");
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}
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}
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//Delay_ms(500); // 延时后再检测
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}
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}
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