8，9位UART串口通信

/******************************************************************************* UART接口一帧的数据格式为 1个起始位，8个数据位，1个地址/数据标志位，1个停止位。 波特率：19200，方式3，11位格式。 发送数据封包格式：（注：模块地址为地址帧第9位数据为1，其他的为数据帧第9位数据为0） 数据包内容:模块地址（2B） 长度字（1B） 命令字（1B） 数据域（nB） 校验字（1B） 模块地址：对于单独使用的模块来说固定为0x00； 对网络版模块来说为0x01~0XFE； 0xFF为广播(不回答)。 注：模块地址为完全相同的2字节. 长度字：指明从长度字到数据域最后一字节的字节数（包括长度字） 命令字：本条命令的含义 数据域：该条命令的内容,此项可以为空 校验字：从长度字到数据域最后一字节的逐字节异或值（最后一字节）。 返回数据封包格式：（注：所有字节的第9位数据为0） 数据包内容:命令头 长度字 命令字 执行结果 数据域 校验字 命令头： 0xAA 0x55，若后续数据中包含0xAA则随后补充一字节0x00以区分命令头但长度字不增加 长度字： 指明从长度字到数据域最后一字节的字节数 命令字： 执行正确为接收到的命令字； 执行错误为接收到的命令字逐位取反； 数据域： 该条命令返回的内容 校验字：从长度字到数据域最后一字节的逐字节异或值（最后一字节）。 *******************************************************************************/ #include "main.h" unsigned char g_cReceBuf[43]; //接收缓冲区 unsigned char g_cReceNum; //接收字节计数 bit g_bReceCommandOk; //接收命令正确标志 bit g_bReceAA; //接收的数为 "0xaa", 记下标志 bit g_bCard; //卡片进入射频场标志 unsigned char code ComHaltMCU[] = {0x02, COMM_SET_MCU_IDLE, }; unsigned char ComSet[] = {0x03, COMM_CONTROL_ANTENNA, 0x01}; //设置打开天线和关闭自动循卡 unsigned char code ComSearchCard[] = {0x03, COMM_MIFARE_SEARCH_CARD, 0x00}; //循卡后读出卡号 unsigned char cReadBlock[13] = {0x0A, COMM_READ_BLOCK, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; //读块No.4 unsigned char code ComReadBlock4[] = {0x0A, COMM_READ_BLOCK, 0x00, 0x04, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; //读块No.6 unsigned char code ComReadBlock6[] = {0x0A, COMM_READ_BLOCK, 0x00, 0x06, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; //写块No.4 unsigned char code ComWriteBlock4[] = {0X1A, COMM_WRITE_BLOCK, 0x00, 0x04, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}; //初始化钱包No.5 的值为0x12345678 unsigned char code ComIntiPurse5[] = {0x0E, COMM_INIT_PURSE, 0x00, 0x05, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff , 0x78, 0x56, 0x34, 0x12}; //读钱包的值No.6 unsigned char code ComReadPurse6[] = {0x0A, COMM_READ_PURSE, 0x00, 0x06, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; //钱包值加2 unsigned char code ComIncrPurse5[] = {0x0E, COMM_INC_VALUE, 0x00, 0x05, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x02, 0x00, 0x00, 0x00}; //钱包值减1 unsigned char code ComDecrPurse5[] = {0x0E, COMM_DEC_VALUE, 0x00, 0x05, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00}; // restore purse in block No.5 to block No.6 unsigned char code ComBakPurse56[] = {0x0B, COMM_BAK_PURSE, 0x00, 0x05, 0x06, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; // 卡片休眠 unsigned char code ComHaltCard[] = {0x02, COMM_CARD_HALT, }; // 钱包在 INC & DEC 后的结果 unsigned char code pursevalue[] = {0x79,0x56,0x34, 0x12}; unsigned char code ComClrPA[] = {0X03 , COMM_PA_OUT_CLR , 0XFF}; unsigned char code ComSetPA[] = {0X03 , COMM_PA_OUT_SET , 0XFF}; unsigned char code ComClrPB[] = {0X03 , COMM_PB_OUT_CLR , 0X1F}; unsigned char code ComSetPB[] = {0X03 , COMM_PB_OUT_SET , 0X1F}; void Delay100uS(unsigned int i) { unsigned char m; while(i--) { for(m = 0; m < 13; m++) { LED_zhishi = CARDPIN; } } } void main() { unsigned char i; unsigned char cStatus; InitializeSystem(); i=16; BEEP = 0; P0 = 0XFF; P1 = 0XFF; P2 = 0XFF; P3 = 0XFF; while(i--) { LED_ok = ~LED_ok; LED_UART = ~LED_UART; LED_error = ~LED_error; LED_zhishi = ~LED_zhishi; Delay100uS(500); } while (1) { ES = 1; SM2 = 0; cStatus = UartTesting(); if (SUCCESS != cStatus) { Err(); //测试失败 g_bCard = !CARDPIN; LED_zhishi = CARDPIN; ShowError(cStatus); continue; } LED_ok = 0; //测试成功 Delay100uS(500); LED_ok = 1; g_bCard = !CARDPIN; LED_zhishi = CARDPIN; i++; } } unsigned char UartTesting() { unsigned char cReadBlock[10] = {0x0a, 0x21, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; unsigned char *cPa, *cPb; unsigned char i; unsigned char cCnt; cPa = ComSet; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 1; } cPa = ComSearchCard; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 2; } //依次读出s50卡片中的16个扇区，64块的数据 for(i=0; i<64 ;i++) { cReadBlock[3] = i; cPa = cReadBlock; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(3); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 3; } Delay100uS(50); } //写块 cPa = ComWriteBlock4; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 4; } //读块 cPa = ComReadBlock4; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 5; } //比较写入的和读出的数据 cPa = &ComWriteBlock4[10]; cPb = &g_cReceBuf[2]; if (memcmp(cPa, cPb, 16) != 0) { return 6; } //初始化钱包的值为0x12345678 cPa = ComIntiPurse5; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 7; } //增值 cPa = ComIncrPurse5; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 8; } //减值 cPa=ComDecrPurse5; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 9; } //restore the purse in block No.5 to block No.6 cPa = ComBakPurse56; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 10; } //读块6 cPa = ComReadPurse6; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 11; } //比较操作钱包的结果 cPa = pursevalue; cPb = &g_cReceBuf[2]; if (memcmp(cPa, cPb, 4) != 0) { return 12; } cPa=ComHaltMCU; SendUart(cPa); for (cCnt=200; (cCnt > 0) && !g_bReceCommandOk; cCnt--) { Delay100uS(1); } if ((g_cReceBuf[1] != cPa[1]) || (0 == cCnt)) { return 13; } return SUCCESS; } /***************************************************************************** * 发光管错误指示 *****************************************************************************/ void ShowError(unsigned char cTimes) { Delay100uS(5000); while (cTimes--) { LED_error = 0; Delay100uS(1000); LED_error = 1; Delay100uS(1000); } } /***************************************************************************** 错误，蜂鸣器1s *****************************************************************************