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producing and importing look up tables

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davt

Joined: 07 Oct 2003
Posts: 66
Location: England

producing and importing look up tables
Posted: Wed Oct 20, 2004 9:32 am

Hi all Often I need to have look up tables in my projects. How can I produce them to be in a suitable form to import into CCS. If someone could take me through the stages... Thanks Dave

Neutone

Joined: 08 Sep 2003
Posts: 839
Location: Houston

Re: producing and importing look up tables

Posted: Wed Oct 20, 2004 10:26 am

davt wrote:

Hi all

Often I need to have look up tables in my projects. How can I produce them to be in a suitable form to import into CCS.
If someone could take me through the stages...
Thanks

Embarassed

Dave

Generate a comma delimited text file and then copy and paste

Code:

/* Table of CRC values for high order byte */
char Table_CRC_Hi[256] = { // A global stored in RAM is faster than a constant by 50%
//const char Table_CRC_Hi[256] = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40
} ;

Mark

Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA

Posted: Wed Oct 20, 2004 10:29 am

Here is an example of a lookup table.

Code:

UINT16 const INCANDESCENT_CURVE_60Hz[102] = {
0x5161,0x5161,0x4A26,0x4909,0x4721,0x4604,0x44E7,0x441C,0x42FF,0x4285,
0x4191,0x4117,0x4074,0x3FFA,0x3F57,0x3E8C,0x3E11,0x3D97,0x3CF5,0x3C7B,
0x3C01,0x3B5E,0x3ABB,0x3A18,0x399E,0x3924,0x38AA,0x37DF,0x373C,0x36C2,
0x3648,0x35CE,0x352B,0x34B1,0x33E5,0x3394,0x32C8,0x324E,0x31D4,0x3132,
0x30B8,0x3015,0x2F9B,0x2EF8,0x2EA7,0x2E04,0x2D8A,0x2CE7,0x2C96,0x2BF3,
0x2B79,0x2AFF,0x2AAD,0x2A33,0x29E2,0x293F,0x28C5,0x284B,0x27D1,0x2757,
0x2705,0x26B4,0x2611,0x25C0,0x2546,0x24F4,0x247A,0x2400,0x2386,0x230C,
0x22BB,0x2241,0x21C7,0x214D,0x20D3,0x2058,0x1FDE,0x1F64,0x1EC2,0x1E47,
0x1DA5,0x1D2B,0x1C88,0x1C0E,0x1B6B,0x1AC8,0x1A26,0x1983,0x18E0,0x183D,
0x1772,0x16A6,0x15B2,0x1495,0x13A1,0x1284,0x11B9,0x1022,0x0E11,0x0B5D,
0x0000};

This was created with Excel and a VB Macro.

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