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RM85x Hand-held Terminals User Manual

CNI Engineering S.r.l.

05-10-2007

Calculating the 16 bit CRC

VT100 protocol uses a 16 bit CRC in some commands. The source code for these functions is
reproduced below.

F.1

MODULE CRC16.H

/****************************************************************************

Filename:

crc16.h

Description:

Cyclic Redundancy Check 16 functions

Created:

24-Feb-1999

Redistribution and use in source and binary forms, with or without modification, are

permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of

conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list

of conditions and the following disclaimer in the documentation and/or other

materials provided with the distribution.

Neither the name of the Indigo Systems Corporation nor the names of its contributors

may be used to endorse or promote products derived from this software without

specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

THE POSSIBILITY OF SUCH DAMAGE.

****************************************************************************/

#ifndef __CRC16_H__

#define __CRC16_H__

#ifdef __cplusplus

extern "C"

{

#endif

typedef unsigned short CRC16;

#ifdef _OPT_SIZE

Содержание RM85x

Страница 1: ...508911 Fax 39 051 6508912 Info cnicnc com www cnicnc com Serial Communication Protocols DESCRIPTION The RM85x family of hand held terminals communicate with a remote controller over an EIA standard RS...

Страница 2: ...05 10 2007 UD CNI D Update List Revision Added Deleted Modified V 01 CNI Engineering S r l No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanic i...

Страница 3: ...ntation Dept CNI Engineering S r l Via Carpanelli 24 40011 Anzola dell Emilia Bo Italy Tel 39 051 6508911 Fax 39 051 6508912 Info cnicnc com www cnicnc com Document code Document revision Document iss...

Страница 4: ......

Страница 5: ...ll 4 3 1 6 Cursor up with scroll 4 3 1 7 Cursor down without scroll 5 3 1 8 Cursor up without scroll 5 3 1 9 Cursor right 6 3 1 10 Cursor left 6 3 1 11 Backspace 6 3 1 12 Position cursor 7 3 1 13 Tab...

Страница 6: ...est 18 3 5 4 Exit VT100 protocol 19 3 6 I O commands 19 3 6 1 Switch LEDs 19 3 6 2 Monitor keys 20 3 6 3 Monitor knob 21 3 6 4 Monitor overrides 22 4 CNI proprietary protocol commands 23 4 1 1 Positio...

Страница 7: ...RM851 hand held terminal 44 E 1 1 Numbering of keys 44 E 1 2 Numbering of LEDs 44 E 1 3 The knob 44 E 2 The RM850 hand held terminal 45 E 2 1 Numbering of keys 45 E 2 2 Numbering of LEDs 45 E 2 3 Numb...

Страница 8: ...TABLE OF CONTENTS 05 10 2007 CNI Engineering S r l iv...

Страница 9: ...XOFF character 0x13 to the master to request it to stop transmitting as quickly as possible Once an XOFF character has been sent and the reception buffer has dropped below 16 characters again the term...

Страница 10: ...e transmitted is 68 This number does not include the control characters in the packet 2 2 4 Node address The second byte of each command identifies the target terminal s node address as configured on...

Страница 11: ...4 2 0x32 05 5 0x35 06 h 0x68 3 1 2 Cursor off This command stops the cursor blinking leaving it invisible on the display Sequence ESC 2 5 l Byte Command Response 01 ESC 0x1b 02 0x5b 03 0x3f 04 2 0x32...

Страница 12: ...Response 00 ESC 0x1b 01 E 0x45 3 1 5 Cursor down with scroll This command moves the cursor to the next row after the row on which it is currently positioned leaving it in the same column If the curso...

Страница 13: ...the next row after the row on which it is currently positioned Pn 1 Byte Command Response 00 ESC 0x1b 01 0x5b 02 1 0x31 03 B 0x42 3 1 8 Cursor up without scroll This command moves the cursor up in th...

Страница 14: ...C 0x43 3 1 10 Cursor left This command moves the cursor to the left along the row on which it is currently positioned The number of columns moved is determined by the parameter Pn If Pn is omitted or...

Страница 15: ...mns are numbered 1 to 20 starting from the left Sequence ESC Pn r Pn c H Example To move the cursor to row 2 column 12 Pn r 2 Pn c 12 Byte Command Response 00 ESC 0x1b 01 0x5b 02 1 0x31 03 0x3b 04 1 0...

Страница 16: ...ition For each character received the cursor moves one column to the right along the row on which it is currently positioned until it reaches the last column on the display If the cursor is already lo...

Страница 17: ...l commands 05 10 2007 CNI Engineering S r l 9 Example To send the string Rm 851 Byte Command Response 00 R 0x52 01 m 0x6d 02 0x2d 03 8 0x38 04 5 0x35 05 1 0x31 The figure below shows what characters a...

Страница 18: ...ow of the next scroll area Sequence ESC Pn r1 Pn r2 r Example To set the end of the scroll area between the second and third rows Byte Command Response 00 ESC 0x1b 01 0x5b 02 2 0x32 03 0x3b 04 3 0x33...

Страница 19: ...ESC 0x1b 01 0x5b 02 2 0x32 03 5 0x35 04 m 0x6d 3 2 7 Insert characters This command inserts the number of blank characters 0x32 determined by the parameter Pn Blank characters are inserted starting f...

Страница 20: ...he cursor is currently positioned Byte Command Response 00 ESC 0x1b 01 0x5b 02 1 0x31 03 L 0x4c 3 3 Character delete commands This group of command lets you delete characters parts of rows or even a c...

Страница 21: ...0x30 03 K 0x4b 3 3 3 Delete from start of row This command deletes all characters from the start of the row to the current cursor position It does not change the position of the cursor Sequence ESC 1...

Страница 22: ...01 0x5b 02 0 0x30 03 J 0x4a 3 3 6 Delete from start of display This command deletes all characters from the start of the display first row first column to the current cursor position inclusive It does...

Страница 23: ...he cursor Sequence ESC Pn M Example To delete 2 rows starting from the row on which the cursor is currently positioned Byte Command Response 00 ESC 0x1b 01 0x5b 02 2 0x32 03 M 0x4d 3 4 Information req...

Страница 24: ...x1b ESC 0x1b 01 0x5b 0x5b 02 6 0x36 2 0x32 03 n 0x6e 0x3b 04 9 0x39 05 R 0x52 3 4 3 Request communication parameters This command requests the terminal to return the current communication parameters S...

Страница 25: ...0 0x30 11 0x3b 12 3 0x37 13 6 0x32 14 0 0x30 15 0x3b 16 1 0x31 17 0x3b 18 0 0x30 19 x 0x78 3 4 4 Request terminal attributes This command requests the terminal to return its identifying attributes Se...

Страница 26: ...roll area set between first and last rows of display fixed non blinking characters Sequence ESC c Byte Command Response 00 ESC 0x1b 01 c 0x63 3 5 2 Cancel escape sequence This command cancels any esca...

Страница 27: ...Sequence ESC J Byte Command Response 00 ESC 0x1b 01 0x3b 02 0x3f 03 J 0x4a 3 6 I O commands 3 6 1 Switch LEDs This command switches the terminal s LEDs on or off The first parameter Pn e switches the...

Страница 28: ...means that the key is pressed 0 means it is released Parameter Pn 2 identifies the key that has changed state This parameter can have any value from 1 to 32 Parameter Pn 3 is the 16 bit CRC for all ch...

Страница 29: ...ue becomes 65535 If the parameter value is 65535 and the knob is turned clockwise the value becomes 0 Parameter Pn 2 identifies the knob that has changed state This parameter can only have the value 1...

Страница 30: ...o 255 Parameter Pn 2 identifies the override that has just changed state This parameter can have a value of either 1 or 2 Parameter Pn 3 is the 16 bit CRC for all characters sent up to and including t...

Страница 31: ...Cursor off 1 Cursor on 2 Cursor blinking Byte Command Response 01 STX STX 02 Node Node 03 0x08 0x0 StatusBit 04 CmdCursorPosit CmdCursorPosit 05 0x00 0x00 06 CursorAttribute CursorAttribute 07 Cursor...

Страница 32: ...9 First character ETX 10 Fourth character 11 Third character 2 n 6 2n th character 2 n 7 2n 1 th character 2 n 8 CRC 2 n 9 ETX Example To write the string abcde in blinking characters at position 16 o...

Страница 33: ...Command Response 01 STX STX 02 Node Node 03 0x08 0x0 StatusBit 04 CmdDelRow CmdDelRow 05 0x00 0x00 06 0x00 0x00 07 RowsBit RowsBit 08 CRC CRC 09 ETX ETX Example To delete the first row from the displa...

Страница 34: ...ode Node 03 0x08 0x0 StatusBit 04 CmdScroll CmdScroll 05 0x00 0x00 06 NRowsScroll NRowsScroll 07 ScrollUp ScrollUp 08 CRC CRC 09 ETX ETX Example To scroll the display of the terminal at node address 0...

Страница 35: ...it by bit status for keys 25 to 32 1 1st override status 2nd override status High byte of knob status Low byte of knob status Example To send the read I O command to the terminal at node address 0 twi...

Страница 36: ...gh byte of message code 07 0x00 Low byte of message code 08 CRC CRC 09 ETX ETX Example To read the message in the terminal at node address 0 encoded 0x4003 alarm for incorrect command received Byte Co...

Страница 37: ...nstant the command is sent Byte Command Response 01 STX STX 02 Node Node 03 0x08 0x0 StatusBit 04 CmdReadChar CmdReadChar 05 0x00 0x00 06 0x00 0x00 07 CharacterPosition CharacterRead 08 CRC CRC 09 ETX...

Страница 38: ...r CmdGetVer 05 0x00 0x00 06 0x00 HighByteVersion 07 0x00 LowByteVersion 08 CRC CRC 09 ETX ETX Example To read the version of the firmware in the terminal at node address 0 which is 1029 0x0405 Byte Co...

Страница 39: ...ble meanings of the response Type returned Terminal type Bus type 0x0200 RM85x ENET 0x0201 RM85x RS485 0x0202 RM85x CAN 0x0203 RM85x RS232 VT100 Example To read the type of the terminal at node addres...

Страница 40: ...00 06 0x01 High part of parameter code 0x01 High part of parameter code 07 0x0f Low part of parameter code 0x0f Low part of parameter code 08 0x04 High part of parameter value 0x99 CRC 09 0xb0 Low par...

Страница 41: ...Low part of parameter value 10 CRC CRC 11 ETX ETX Example To read the value of the parameter that determines character blinking frequency code 0x010f from the terminal at node address 0 currently set...

Страница 42: ...x0 StatusBit 04 CmdStartVt100 CmdStartVt100 05 0x00 0x00 06 0x00 0x00 07 0x00 0x00 08 CRC CRC 09 ETX ETX Example To restore VT100 protocol to the terminal at node address 0 Byte Command Response 01 0x...

Страница 43: ...Read flash memory This command reads any chosen address in the terminal s flash memory The address can range from 0x0000 to 0x7fff Example Byte Command Response 01 STX STX 02 Node Node 03 0x08 0x0 St...

Страница 44: ...x08 0x0 0x0 StatusBit 04 0xa8 CmdSampleVar 0xa8 CmdSampleVar 05 0x00 0x00 06 0x04 Variable 1 code 0x04 Variable 1 code 07 0x05 Variable 2 code 0x05 Variable 2 code 08 0x5e CRC 0x56 CRC 09 0x03 ETX 0x0...

Страница 45: ...sample 1 variable 1 09 0x03 ETX Low part of sample 1 variable 1 10 High part of sample 1 variable 2 11 Low part of sample 1 variable 2 12 High part of sample 2 variable 1 13 Low part of sample 2 varia...

Страница 46: ...eter RESERVED7 16 bit 0 32768 32767 0x0107 Reserved parameter RESERVED8 16 bit 0 32768 32767 0x0108 Reserved parameter RESERVED9 16 bit 0 32768 32767 0x0109 Reserved parameter RESERVED10 16 bit 0 3276...

Страница 47: ...ghth row FONT0_3 16 bit 0 0 7967 0x0118 The low byte forms the first row of pixels of the second character The high byte forms the second row FONT1_0 16 bit 0 0 7967 0x0119 The low byte forms the thir...

Страница 48: ...0 0 7967 0x0124 The low byte forms the first row of pixels of the fifth character The high byte forms the second row FONT4_0 16 bit 0 0 7967 0x0125 The low byte forms the third row of pixels of the fi...

Страница 49: ...character The high byte forms the sixth row FONT6_2 16 bit 0 0 7967 0x012F The low byte forms the seventh row of pixels of the seventh character The high byte forms the eighth row FONT6_3 16 bit 0 0 7...

Страница 50: ...application saved in flash memory is incorrect Download the application 0x000C ALERASINGFL A flash memory delete error occurred while the application was being downloaded Download the application agai...

Страница 51: ...command response Whenever the terminal cannot implement a command it sends the following response Byte Response 01 STX 02 Node 03 0x0 StatusBit 04 CmdNACK 05 Byte 05 of sent command 06 Byte 06 of sen...

Страница 52: ...ttom up and from left to right as shown in Figure 1 Figure 1 Numbering of keys on the RM851 hand held terminal E 1 2 Numbering of LEDs The terminal is equipped with a maximum of 12 LEDs These are numb...

Страница 53: ...3 Figure 3 Numbering of keys on the RM850 hand held terminal E 2 2 Numbering of LEDs The terminal is equipped with a maximum of 12 LEDs These are numbered in the same way as the keys Figure 4 Numberin...

Страница 54: ...on Neither the name of the Indigo Systems Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission...

Страница 55: ...owing disclaimer in the documentation and or other materials provided with the distribution Neither the name of the Indigo Systems Corporation nor the names of its contributors may be used to endorse...

Страница 56: ...xF5CF 0xC5AC 0xD58D 0x3653 0x2672 0x1611 0x0630 0x76D7 0x66F6 0x5695 0x46B4 0xB75B 0xA77A 0x9719 0x8738 0xF7DF 0xE7FE 0xD79D 0xC7BC 0x48C4 0x58E5 0x6886 0x78A7 0x0840 0x1861 0x2802 0x3823 0xC9CC 0xD9E...

Страница 57: ...83 0x1CE0 0x0CC1 0xEF1F 0xFF3E 0xCF5D 0xDF7C 0xAF9B 0xBFBA 0x8FD9 0x9FF8 0x6E17 0x7E36 0x4E55 0x5E74 0x2E93 0x3EB2 0x0ED1 0x1EF0 define ByteCRC16 v crc unsigned short crc 8 ccitt_16Table crc 8 v 255 C...

Страница 58: ...held Terminals User Manual 50 CNI Engineering S r l 05 10 2007 CRC16 CalcCRC16Bytes unsigned int count char buffer int crc 0 do int value buffer crc ByteCRC16 value crc while count return crc endif _C...

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