CFA533 command 31 (0x1f) problem

jevoyat

New member
Hi,MC
I'm controlling a CFA-TMI-KL with a dsPIC33FJ via RS232.

The code not working is the following one:

posizNomePag = indPages[actPage];
message[0] = 0x1F;
message[1] = 14;
message[2] = 0;
message[3] = 0;
message[4] = pages[posizNomePag];
message[5] = pages[posizNomePag + 1];
message[6] = pages[posizNomePag + 2];
message[7] = pages[posizNomePag + 3];
message[8] = pages[posizNomePag + 4];
message[9] = pages[posizNomePag + 5];
message[10] = pages[posizNomePag + 6];
message[11] = pages[posizNomePag + 7];
message[12] = pages[posizNomePag + 8];
message[13] = pages[posizNomePag + 9];
message[14] = pages[posizNomePag + 10];
message[15] = pages[posizNomePag + 11];

byteNum = 16;

CRC = get_crc(byteNum, message);

for(ind=0; ind<byteNum; ind++)
{
putc(message[ind]);
}

putc((unsigned int8) CRC);
putc((unsigned int8) (CRC>>8));

//// Indicazione valore grandezza
itoa((int32) pageContrVal[actPage], 10, string); // Da numero a stringa
message[0] = 0x1F;
message[1] = 4;
message[2] = 0;
message[3] = 1;
message[4] = string[0];
message[5] = string[1];

byteNum = 6;

CRC = get_crc(byteNum, message);

for(ind=0; ind<byteNum; ind++)
{
putc(message[ind]);
}

putc((unsigned int8) CRC);
putc((unsigned int8) (CRC>>8));

What happens is that the first command 31 just doesn't appear, I see only the charactrers on the second line. What makes me wonder is that if I invert the two sections, I just see the characters on the first line (i.e. in any case the second command 31 seems to erase the lcd before writing).
What am I missing ?
Thanks a lot for your help

JP Voyat
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.
 
Please supply more information about what kind of data these variables are:
Code:
   posizNomePag = indPages[actPage];
   pages[posizNomePag];
 
USB LCD Displays - Graphic and Character LCDs with a Keypad
Top