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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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CFA633-RDI-KS 数据表(PDF) 76 Page - Crystalfontz America, Inc. |
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CFA633-RDI-KS 数据表(HTML) 76 Page - Crystalfontz America, Inc. |
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76 / 88 page  Crystalfontz America, Inc. Data Sheet Release Date 2012/02/21 www.crystalfontz.com CFA633-RDI-KS LCD Module (Hardware v2.0 / Firmware s2v1) February 2012 Page 76 clrc ; clear carry for CRC register shift rrf datareg,f ; perform shift of data into CRC register rrf accumh,f ; rrf accuml,f ; btfss STATUS,C ; skip jump if if carry goto _notset ; otherwise goto next bit movlw polyL ; XOR poly mask with CRC register xorwf accuml,F ; movlw polyH ; xorwf accumh,F ; _notset decfsz j,F ; decrement bit counter goto _loop ; loop if not complete movfw savchr ; restore the input character return ; return to calling routine ;==================================================================== ; USER SUPPLIED Serial port transmit routine ;-------------------------------------------------------------------- SENDUART return ; put serial xmit routine here ;==================================================================== ; test string storage ;-------------------------------------------------------------------- org 0100h ; InputStr addwf PCL,f dt 7h,10h,"This is a test. ",0 ; ;==================================================================== end Algorithm 4: “Visual Basic” Table Implementation Visual BASIC has its own challenges as a language (such as initializing static arrays), and it is also challenging to use Visual BASIC to work with “binary” (arbitrary length character data possibly containing nulls—such as the “data” portion of the CFA633 packet) data. This routine was adapted from the C table implementation. The complete project can be found in our forums. 'This program is brutally blunt. Just like VB. No apologies. 'Written by Crystalfontz America, Inc. 2004 http://www.crystalfontz.com 'Free code, not copyright copyleft or anything else. 'Some visual basic concepts taken from: 'http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=21434&lngWId=1 'most of the algorithm is from functions in 633_WinTest: 'http://www.crystalfontz.com/products/633/633_WinTest.zip 'Full zip of the project is available in our forum: 'http://www.crystalfontz.com/forum/showthread.php?postid=9921#post9921 Private Type WORD Lo As Byte Hi As Byte End Type Private Type PACKET_STRUCT command As Byte data_length As Byte data(22) As Byte crc As WORD End Type Dim crcLookupTable(256) As WORD Private Sub MSComm_OnComm() 'Leave this here |
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