Simple single-color 8x8x8 LED Cube with AVRs
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winSerial.c 3.4KB

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  1. /*
  2. * winSerial.c
  3. *
  4. * Windows 16 (& 32 & 64?) compatible serial port library
  5. * Uses 8 databits, no parity, 1 stop bit, no handshaking
  6. *
  7. * Copyright 2012 Thomas Buck <xythobuz@me.com>
  8. *
  9. * This file is part of LED-Cube.
  10. *
  11. * LED-Cube is free software: you can redistribute it and/or modify
  12. * it under the terms of the GNU General Public License as published by
  13. * the Free Software Foundation, either version 3 of the License, or
  14. * (at your option) any later version.
  15. *
  16. * LED-Cube is distributed in the hope that it will be useful,
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19. * GNU General Public License for more details.
  20. *
  21. * You should have received a copy of the GNU General Public License
  22. * along with LED-Cube. If not, see <http://www.gnu.org/licenses/>.
  23. */
  24. #include <stdio.h>
  25. #include <windows.h>
  26. #define BAUD CBR_38400;
  27. HANDLE hSerial = INVALID_HANDLE_VALUE;
  28. // Open the serial port
  29. int serialOpen(char *port) {
  30. DCB dcbSerialParams = {0};
  31. COMMTIMEOUTS timeouts = {0};
  32. hSerial = CreateFile(port, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  33. if (hSerial == INVALID_HANDLE_VALUE) {
  34. return -1;
  35. }
  36. dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
  37. if (!GetCommState(hSerial, &dcbSerialParams)) {
  38. CloseHandle(hSerial);
  39. hSerial = INVALID_HANDLE_VALUE;
  40. return -1;
  41. }
  42. dcbSerialParams.BaudRate = BAUD;
  43. dcbSerialParams.ByteSize = 8;
  44. dcbSerialParams.StopBits = ONESTOPBIT;
  45. dcbSerialParams.Parity = NOPARITY;
  46. if (!SetCommState(hSerial, &dcbSerialParams)) {
  47. CloseHandle(hSerial);
  48. hSerial = INVALID_HANDLE_VALUE;
  49. return -1;
  50. }
  51. timeouts.ReadIntervalTimeout = 1000;
  52. timeouts.ReadTotalTimeoutConstant = 1000;
  53. timeouts.ReadTotalTimeoutMultiplier = 1000;
  54. timeouts.WriteTotalTimeoutConstant = 1000;
  55. timeouts.WriteTotalTimeoutMultiplier = 1000;
  56. if (!SetCommTimeouts(hSerial, &timeouts)) {
  57. CloseHandle(hSerial);
  58. hSerial = INVALID_HANDLE_VALUE;
  59. return -1;
  60. }
  61. return 0;
  62. }
  63. // Write to port. Returns number of characters sent, -1 on error
  64. ssize_t serialWrite(char *data, size_t length) {
  65. DWORD dwBytesWritten = 0;
  66. if (!WriteFile(hSerial, data, length, &dwBytesWritten, NULL)) {
  67. return -1;
  68. }
  69. return dwBytesWritten;
  70. }
  71. // Read from port. Return number of characters read, 0 if none available, -1 on error
  72. ssize_t serialRead(char *data, size_t length) {
  73. DWORD dwBytesRead = 0;
  74. if (!ReadFile(hSerial, data, length, &dwBytesRead, NULL)) {
  75. return -1;
  76. }
  77. return dwBytesRead;
  78. }
  79. // Close the serial Port
  80. void serialClose(void) {
  81. CloseHandle(hSerial);
  82. hSerial = INVALID_HANDLE_VALUE;
  83. }
  84. int availableSerialPorts(char *ports) {
  85. int i, c = 0;
  86. char portName[6];
  87. for (i = 0; i < 20; i++) {
  88. sprintf(portName, "COM%d", i + 1);
  89. if (serialOpen(portName) == 0) {
  90. // success
  91. ports[i] = 1;
  92. c++;
  93. serialClose();
  94. } else {
  95. ports[i] = 0;
  96. }
  97. }
  98. return c;
  99. }
  100. // Last element has to be NULL
  101. char** getSerialPorts(const char *search) {
  102. int i, num, c = 0, s;
  103. char ports[20];
  104. char **portList;
  105. num = availableSerialPorts(ports);
  106. portList = (char **)malloc((num + 1) * sizeof(char *));
  107. for (i = 0; i < 20; i++) {
  108. // if ports[n] == 1 -> COMn+1 does exist
  109. if (ports[i] != 0) {
  110. if (i < 9) {
  111. s = 5;
  112. } else {
  113. s = 6;
  114. }
  115. portList[c] = (char *)malloc(s * sizeof(char));
  116. sprintf(portList[c], "COM%d", i + 1);
  117. c++;
  118. }
  119. }
  120. portList[c] = NULL;
  121. return portList;
  122. }