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Flash program memory not working

 
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leekp8



Joined: 25 Sep 2006
Posts: 6
Location: Malaysia

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Flash program memory not working
PostPosted: Mon Sep 25, 2006 11:12 am     Reply with quote

Hi,

Can anybody help to look at he following codes as
after program I was not able to read out the correct
codes. I'm not sure if write or read problem.

This is checked in the ICD2 debugger environment.


#include <18F6527.h>
#device *=16 ADC=8 //16bit pointer, 8-bit ADC
//#fuses HS,NOWDT,PROTECT,NOPUT,NOBROWNOUT //,NOLVP //High Speed, No WDT, Code PROTECT, No Brown Out
#use delay(clock=20000000)
//#fuses HS //, WDT128
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, STREAM=RS485)
#use rs232(baud=9600, xmit=PIN_G1, rcv=PIN_G2, STREAM=UART)


int8 i, j, k, x;
int32 ProgramStartAddress;

int16 const TK[] = {0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567};

#define Buffer_MAX 32
int16 Buffer[Buffer_MAX];

void FlashRWTest()
{
for (i=0; i<32; i++) {
Buffer[i] = 0;
}
ProgramStartAddress = 0x5000;
erase_program_eeprom(ProgramStartAddress);
write_program_memory(ProgramStartAddress, TK, 64);
read_program_memory(ProgramStartAddress, Buffer, 64);
while (1);
}




#ORG 0x01000,0x1fff
void main()
{
FlashRWTest();
}
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Sep 25, 2006 12:28 pm     Reply with quote

Quote:
int16 const TK[] = {
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,
0x1234, 0x2345, 0x3456, 0x4567,

I don't think that the write function can accept a constant array.
This is what I'm seeing, from looking at the .LST file.
Try removing the 'const' keyword and see if it starts working.


Also, your #fuses and pre-processor statements need some
improvement. You don't need to specify 16-bit pointers.
PCH automatically uses them. That directive is for the PCM compiler.
You should also add the ERRORS directive to your hardware UART
declarations. Try this:
Code:

#include <18F6527.h>
#fuses HS,NOWDT,PROTECT,NOPUT,NOBROWNOUT,NOLVP 
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS, STREAM=RS485)
#use rs232(baud=9600, xmit=PIN_G1, rcv=PIN_G2, ERRORS,  STREAM=UART)
 
leekp8



Joined: 25 Sep 2006
Posts: 6
Location: Malaysia

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Flash program memory not working - 2
PostPosted: Mon Sep 25, 2006 8:15 pm     Reply with quote

Hi,

After removing const, it works.
However, with

#fuses HS,NOWDT,PROTECT,NOPUT,NOBROWNOUT,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS, STREAM=RS485)
#use rs232(baud=9600, xmit=PIN_G1, rcv=PIN_G2, ERRORS, STREAM=UART)

it gave
Executing: "C:\Program files\Picc\CCSC.exe" "flrwtest.C" +FH +DF +LN +T -A +M +Z +Y=9 +EA
*** Error 111 "E:\ats\A900_WD\BusCard\FLRWTEST\flrwtest.C" Line 12(7,49): Unknown keyword in #FUSES "NOLVP"
1 Errors, 0 Warnings.
Halting build on first failure as requested.
BUILD FAILED: Tue Sep 26 10:12:53 2006


If I were to remove NOLVP,

#include <18F6527.h>
#fuses HS,NOWDT,PROTECT,NOPUT,NOBROWNOUT //,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS, STREAM=RS485)
#use rs232(baud=9600, xmit=PIN_G1, rcv=PIN_G2, ERRORS, STREAM=UART)

it gave the following errors:

Executing: "C:\Program files\Picc\CCSC.exe" "flrwtest.C" +FH +DF +LN +T -A +M +Z +Y=9 +EA
*** Error 111 "E:\ats\A900_WD\BusCard\FLRWTEST\flrwtest.C" Line 12(7,51): Unknown keyword in #FUSES "NOBROWNOUT"
1 Errors, 0 Warnings.
Halting build on first failure as requested.
BUILD FAILED: Tue Sep 26 10:14:06 2006


Please advice.
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