43725da7 |
1 | \r |
2 | #include "__serial.h"\r |
3 | \r |
4 | HANDLE SerialPort = NULL; // Handle of SerialPort itself.\r |
5 | \r |
6 | BOOL SerialOpen(int port, int baud)\r |
7 | {\r |
8 | HANDLE Comport;\r |
9 | DCB myDCB;\r |
10 | COMMTIMEOUTS CTout;\r |
11 | char str[100];\r |
12 | \r |
13 | if (port > 9)\r |
14 | sprintf(str, "\\\\.\\COM%d", port);\r |
15 | else\r |
16 | sprintf(str, "COM%d", port);\r |
17 | \r |
18 | // Open the serial port\r |
19 | if ((Comport = CreateFile(str, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)\r |
20 | return FALSE;\r |
21 | \r |
22 | // Configure Serial port (Setup Comm)\r |
23 | \r |
24 | // Buffer sizes\r |
25 | if (!SetupComm(Comport, 128, 128))\r |
26 | return FALSE;\r |
27 | \r |
28 | // Setup DCB using current values\r |
29 | if (!GetCommState(Comport, &myDCB))\r |
30 | return FALSE;\r |
31 | \r |
32 | myDCB.fInX = FALSE; // Turn off xon/xoff handler\r |
33 | myDCB.fOutX = FALSE;\r |
34 | myDCB.fOutxDsrFlow = FALSE;\r |
35 | myDCB.fOutxCtsFlow = FALSE; // no hardware flow control.\r |
36 | myDCB.BaudRate = baud;\r |
37 | myDCB.DCBlength = sizeof(DCB);\r |
38 | myDCB.fBinary = 1;\r |
39 | myDCB.fParity = 0;\r |
40 | myDCB.fDtrControl = DTR_CONTROL_DISABLE;\r |
41 | myDCB.fDsrSensitivity = 0;\r |
42 | myDCB.fTXContinueOnXoff = 1;\r |
43 | myDCB.fNull = 0;\r |
44 | myDCB.fRtsControl = RTS_CONTROL_DISABLE;\r |
45 | myDCB.fDummy2 = 0;\r |
46 | myDCB.wReserved = 0;\r |
47 | myDCB.Parity = NOPARITY;\r |
48 | myDCB.StopBits = ONESTOPBIT;\r |
49 | myDCB.wReserved1 = 0;\r |
50 | myDCB.ByteSize = 8;\r |
51 | \r |
52 | if (!SetCommState(Comport, &myDCB))\r |
53 | return FALSE;\r |
54 | \r |
55 | // Set timeouts\r |
56 | CTout.ReadIntervalTimeout = 0xffffffff;\r |
57 | CTout.ReadTotalTimeoutMultiplier = 0;\r |
58 | CTout.ReadTotalTimeoutConstant = 0;\r |
59 | CTout.WriteTotalTimeoutMultiplier = 0;\r |
60 | CTout.WriteTotalTimeoutConstant = 5000; // don't hang if CTS is locked, for example\r |
61 | \r |
62 | SetCommTimeouts(Comport, &CTout);\r |
63 | EscapeCommFunction(Comport, SETDTR);\r |
64 | PurgeComm(Comport, PURGE_TXCLEAR | PURGE_RXCLEAR);\r |
65 | \r |
66 | SerialPort = Comport;\r |
67 | \r |
68 | return TRUE;\r |
69 | }\r |
70 | \r |
71 | void SerialClose(void)\r |
72 | {\r |
73 | if (SerialPort == NULL) return;\r |
74 | \r |
75 | PurgeComm(SerialPort, PURGE_TXCLEAR | PURGE_RXCLEAR);\r |
76 | CloseHandle(SerialPort);\r |
77 | \r |
78 | SerialPort = NULL;\r |
79 | }\r |
80 | \r |
81 | BOOL SerialSendChar(int c)\r |
82 | {\r |
83 | DWORD cr;\r |
84 | if(WriteFile(SerialPort, &c, 1, (LPDWORD)&cr, NULL) && cr)\r |
85 | return TRUE;\r |
86 | else\r |
87 | return FALSE;\r |
88 | }\r |
89 | \r |
90 | int SerialIsOpen(void)\r |
91 | {\r |
92 | return (SerialPort != NULL);\r |
93 | }\r |
94 | \r |
95 | int SerialGetChar(void)\r |
96 | {\r |
97 | uint8 ch;\r |
98 | DWORD cr;\r |
99 | if (SerialPort != NULL) {\r |
100 | if (ReadFile(SerialPort, &ch, 1, (LPDWORD)&cr, NULL) && cr)\r |
101 | return (int)ch;\r |
102 | }\r |
103 | return EOF;\r |
104 | }\r |
105 | \r |
106 | void SendCmd(uint8 *cmd, int size)\r |
107 | {\r |
108 | int i;\r |
109 | for(i=0; i<size; i++) {\r |
110 | SerialSendChar(cmd[i]);\r |
111 | }\r |
112 | }\r |
113 | \r |
114 | int ReadResp(uint8 *resp, int size)\r |
115 | {\r |
116 | int i = 0, sum = 0, data;\r |
117 | while(i < size) {\r |
118 | while ((data = SerialGetChar()) == EOF) {}\r |
119 | resp[i] = data & 0xff;\r |
120 | sum += (data & 0xff);\r |
121 | i++;\r |
122 | }\r |
123 | return sum;\r |
124 | }\r |