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RuiViana

New_Modbus_Write

Mar 9th, 2016
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  1. /*
  2. Basic_Master - example using ModbusMaster library
  3. This file is part of ModbusMaster.
  4.  
  5. ModbusMaster is free software: you can redistribute it and/or modify
  6. it under the terms of the GNU General Public License as published by
  7. the Free Software Foundation, either version 3 of the License, or
  8. (at your option) any later version.
  9.  
  10. ModbusMaster is distributed in the hope that it will be useful,
  11. but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. GNU General Public License for more details.
  14.  
  15. You should have received a copy of the GNU General Public License
  16. along with ModbusMaster. If not, see <http://www.gnu.org/licenses/>.
  17.  
  18. Written by Doc Walker (Rx)
  19. Copyright © 2009-2013 Doc Walker <4-20ma at wvfans dot net>
  20. */
  21.  
  22. #include <ModbusMaster_Mod.h>
  23.  
  24. // instantiate ModbusMaster object as slave ID 2
  25. // defaults to serial port 0 since no port was specified
  26. ModbusMaster node(1,1,7); // 1 = Serial 2 = slave 7 = pino de Ema
  27. unsigned int Start = 0;
  28. unsigned int Regs = 4;
  29. byte flag = 0;
  30. //-------------------------------------------------------
  31. void setup()
  32. {
  33. Serial.begin(9600);
  34. // initialize Modbus communication baud rate
  35. node.begin(9600); // era 4800
  36. }
  37. //-----------------------------------------------
  38. void loop()
  39. {
  40. static uint32_t i;
  41. uint8_t j, result;
  42. uint16_t data[32];
  43.  
  44.  
  45. if (flag == 0)
  46. {
  47. // Serial.println("Digite o inicio: ");
  48. if(Serial.available()) // Se algo for recebido pela serial do módulo bluetooth
  49. {
  50. Start = Serial.parseInt();
  51. Serial.println(Start);
  52. flag = 1;
  53. }
  54. }
  55. if (flag == 1)
  56. {
  57. Serial.println("Digite qtos Regs: ");
  58. while(flag == 1)
  59. {
  60. if(Serial.available()) // Se algo for recebido pela serial do módulo bluetooth
  61. {
  62. Regs = Serial.parseInt();
  63. Serial.println(Regs);
  64. flag = 0;
  65. }
  66. }
  67. }
  68.  
  69. /* // set word 0 of TX buffer to least-significant word of counter (bits 15..0)
  70. node.setTransmitBuffer(0, lowWord(i));
  71. // set word 1 of TX buffer to most-significant word of counter (bits 31..16)
  72. node.setTransmitBuffer(1, highWord(i));
  73.  
  74. // slave: write TX buffer to (2) 16-bit registers starting at register 0
  75. result = node.writeMultipleRegisters(0, 1);
  76. i++;
  77.  
  78.  
  79. // set word 0 of TX buffer to least-significant word of counter (bits 15..0)
  80. node.setTransmitBuffer(0, lowWord(i));
  81. // set word 1 of TX buffer to most-significant word of counter (bits 31..16)
  82. node.setTransmitBuffer(1, highWord(i));
  83.  
  84. // slave: write TX buffer to (2) 16-bit registers starting at register 0
  85. result = node.writeMultipleRegisters(1, 1);
  86. i++;
  87.  
  88.  
  89. // set word 0 of TX buffer to least-significant word of counter (bits 15..0)
  90. node.setTransmitBuffer(0, lowWord(i));
  91. // set word 1 of TX buffer to most-significant word of counter (bits 31..16)
  92. node.setTransmitBuffer(1, highWord(i));
  93.  
  94. // slave: write TX buffer to (2) 16-bit registers starting at register 0
  95. result = node.writeMultipleRegisters(2, 1);
  96. i++;
  97.  
  98.  
  99. // set word 0 of TX buffer to least-significant word of counter (bits 15..0)
  100. node.setTransmitBuffer(0, lowWord(i));
  101. // set word 1 of TX buffer to most-significant word of counter (bits 31..16)
  102. node.setTransmitBuffer(1, highWord(i));
  103.  
  104. // slave: write TX buffer to (2) 16-bit registers starting at register 0
  105. result = node.writeMultipleRegisters(3, 1);
  106. */ i++;
  107.  
  108.  
  109. // slave: read (6) 16-bit registers starting at register 2 to RX buffer
  110. // result = node.readHoldingRegisters(Start, Regs);
  111. // node.setTransmitBuffer(0, lowWord(4500));
  112. // node.setTransmitBuffer(1, highWord(65537));
  113. // node.setTransmitBuffer(2, lowWord(22));
  114. // node.setTransmitBuffer(3, lowWord(65539));
  115.  
  116. node.setTransmitBuffer(0, 450);
  117. node.setTransmitBuffer(1, 220);
  118. node.setTransmitBuffer(2, 435);
  119. node.setTransmitBuffer(3, 553);
  120.  
  121. result = node.writeMultipleRegisters(0, 4);
  122. result = node.readHoldingRegisters(Start, Regs);
  123. //node.readCoils(Start, Regs);
  124. Serial.print("Result ");
  125. Serial.println(result);
  126. // do something with data if read is successful
  127. if (result == node.ku8MBSuccess)
  128. {
  129. for (j = 0; j < Regs; j++)
  130. {
  131. data[j] = node.getResponseBuffer(j);
  132. Serial.println(data[j]);
  133. }
  134. }
  135. //delay(500);
  136. }
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