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Will Reeve
Joined: 30 Oct 2003
Posts: 209
Location: Norfolk, England
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| 9386 driver? |
 Posted: Tue Sep 28, 2004 10:18 am |
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Has anyone modified 9366.c to work with a 9386?
I am trying to get my head around the code as I type! I can’t see why they shift_left at the beginning of the write and read routines?
Keep well,
Will |
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Will Reeve
Joined: 30 Oct 2003
Posts: 209
Location: Norfolk, England
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| Posted: Tue Sep 28, 2004 1:24 pm |
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Hi guys, here is my commented and modified code to try and make the 93LC86 I have work! I can confirm that a 93LC66 soldered in it's place works (with the 94LC66 driver code, I have left the original code commented out) so I think the hardware is OK. Must be something I have missed in my modifications. I would appreciate it if someone could spot the mistake! I now understand how the driver code works and I think I have modified it correctly but I get garbage out of the EEPROM!
As always help much appreciated,
Will
| Code: | ///////////////////////////////////////////////////////////////////////////
//// Library for a MicroChip 93C86 configured for a x8 org ////
//// ////
//// init_ext_eeprom(); Call before the other functions are used ////
//// ////
//// write_ext_eeprom(a, d); Write the byte d to the address a ////
//// ////
//// d = read_ext_eeprom(a); Read the byte d from the address a ////
//// ////
//// The main program may define eeprom_select, eeprom_di, eeprom_do ////
//// and eeprom_clk to override the defaults below. ////
//// ////
///////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2003 Custom Computer Services ////
//// Modified 93C66 driver to run 93C86 EEPROM ////
///////////////////////////////////////////////////////////////////////////
#ifndef EEPROM_SELECT
#define EEPROM_SELECT PIN_E2
#define EEPROM_CLK PIN_A2
#define EEPROM_DI PIN_A5
#define EEPROM_DO PIN_A4
#endif
#define EEPROM_ADDRESS long int
#define EEPROM_SIZE 2048
#define hi(x) (*(&x+1))
void init_ext_eeprom() {
BYTE cmd[2];
BYTE i;
output_low(EEPROM_DI);
output_low(EEPROM_CLK);
output_low(EEPROM_SELECT);
// cmd[0]=0xc0;
// cmd[1]=0x4; // send EWEN ?????100 11XXXXXX
cmd[0]=0x80;
cmd[1]=0x09; // send EWEN ????1001 1XXXXXXX
// for(i=1;i<=5;++i)
for(i=1;i<=4;++i) // shift out ? marks
shift_left(cmd,2,0);
output_high(EEPROM_SELECT);
// for(i=1;i<=12;++i) {
for(i=1;i<=13;++i) { // 13 clocks of EWAL command
output_bit(EEPROM_DI, shift_left(cmd,2,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
}
void write_ext_eeprom(EEPROM_ADDRESS address, BYTE data) {
BYTE cmd[3];
BYTE i;
cmd[0]=data; // DDDDDDDD data
cmd[1]=(BYTE)address; // AAAAAAAA low bits of address
// cmd[2]=0xa|hi(address); // ????101A high bit of address
cmd[2]=0x28|hi(address); // ??101AAA high three bits of address
// giving total command to send ??101AAA AAAAAAAA DDDDDDDD
// for(i=1;i<=4;++i)
for(i=1;i<=2;++i) // shift out ?
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
// for(i=1;i<=20;++i) {
for(i=1;i<=22;++i) { // 22 clocks of WRITE command
output_bit(EEPROM_DI, shift_left(cmd,3,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
delay_ms(11);
}
BYTE read_ext_eeprom(EEPROM_ADDRESS address) {
BYTE cmd[3];
BYTE i,data;
cmd[0]=0; // DDDDDDDD
cmd[1]=(BYTE)address; // AAAAAAAA
// cmd[2]=0xc|hi(address); // ????110A
cmd[2]=0x30|hi(address); // ??110AAA
// giving command to send ??110AAA AAAAAAAA DDDDDDDD
// for(i=1;i<=4;++i)
for(i=1;i<=2;++i) // shift out ?
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
// for(i=1;i<=20;++i) {
for(i=1;i<=22;++i) { // 22 clocks of READ command
output_bit(EEPROM_DI, shift_left(cmd,3,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
// if(i>12)
if(i>14) // last 8 bits are to be read
shift_left(&data,1,input(EEPROM_DO));
}
output_low(EEPROM_SELECT);
return(data);
} |
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Will Reeve
Joined: 30 Oct 2003
Posts: 209
Location: Norfolk, England
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| Posted: Tue Sep 28, 2004 1:33 pm |
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I love it when I fix it myself :-) I hope you guys don't mind me using the board to think out loud! I present a new driver file 9386.c :-)
My mistake was not sending enough bits for the EWEN command (should be 14!). Might be handy for someone looking for a 9386 driver with the search facility later. Have a good night I am off to find a cork screw!
Keep well,
Will
Full file follows (I've left the comments in so it's easier to see what the code does!)
| Code: | ///////////////////////////////////////////////////////////////////////////
//// Library for a MicroChip 93C66 configured for a x8 org ////
//// ////
//// init_ext_eeprom(); Call before the other functions are used ////
//// ////
//// write_ext_eeprom(a, d); Write the byte d to the address a ////
//// ////
//// d = read_ext_eeprom(a); Read the byte d from the address a ////
//// ////
//// The main program may define eeprom_select, eeprom_di, eeprom_do ////
//// and eeprom_clk to override the defaults below. ////
//// ////
///////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2003 Custom Computer Services ////
//// Modified 93C66 driver to run 93C86 EEPROM by Will ////
//// hopefully ccs won't mind :-) ////
///////////////////////////////////////////////////////////////////////////
#ifndef EEPROM_SELECT
#define EEPROM_SELECT PIN_E2
#define EEPROM_CLK PIN_A2
#define EEPROM_DI PIN_A5
#define EEPROM_DO PIN_A4
#endif
#define EEPROM_ADDRESS long int
#define EEPROM_SIZE 2048
#define hi(x) (*(&x+1))
void init_ext_eeprom() {
BYTE cmd[2];
BYTE i;
output_low(EEPROM_DI);
output_low(EEPROM_CLK);
output_low(EEPROM_SELECT);
// cmd[0]=0xc0;
// cmd[1]=0x4; // send EWEN ?????100 11XXXXXX
cmd[0]=0x80;
cmd[1]=0x09; // send EWEN ????1001 1XXXXXXX
// for(i=1;i<=5;++i)
for(i=1;i<=4;++i) // shift out ? marks
shift_left(cmd,2,0);
output_high(EEPROM_SELECT);
// for(i=1;i<=12;++i) {
for(i=1;i<=14;++i) { // 14 clocks of EWAL command
output_bit(EEPROM_DI, shift_left(cmd,2,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
}
void write_ext_eeprom(EEPROM_ADDRESS address, BYTE data) {
BYTE cmd[3];
BYTE i;
cmd[0]=data; // DDDDDDDD data
cmd[1]=(BYTE)address; // AAAAAAAA low bits of address
// cmd[2]=0xa|hi(address); // ????101A high bit of address
cmd[2]=0x28|hi(address); // ??101AAA high three bits of address
// giving total command to send ??101AAA AAAAAAAA DDDDDDDD
// for(i=1;i<=4;++i)
for(i=1;i<=2;++i) // shift out ?
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
// for(i=1;i<=20;++i) {
for(i=1;i<=22;++i) { // 22 clocks of WRITE command
output_bit(EEPROM_DI, shift_left(cmd,3,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
delay_ms(11);
}
BYTE read_ext_eeprom(EEPROM_ADDRESS address) {
BYTE cmd[3];
BYTE i,data;
cmd[0]=0; // DDDDDDDD
cmd[1]=(BYTE)address; // AAAAAAAA
// cmd[2]=0xc|hi(address); // ????110A
cmd[2]=0x30|hi(address); // ??110AAA
// giving command to send ??110AAA AAAAAAAA DDDDDDDD
// for(i=1;i<=4;++i)
for(i=1;i<=2;++i) // shift out ?
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
// for(i=1;i<=20;++i) {
for(i=1;i<=22;++i) { // 22 clocks of READ command
output_bit(EEPROM_DI, shift_left(cmd,3,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
// if(i>12)
if(i>14) // last 8 bits are to be read
shift_left(&data,1,input(EEPROM_DO));
}
output_low(EEPROM_SELECT);
return(data);
} |
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baron
Guest
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| 93lc66b怎样使用& |
| Posted: Tue Sep 05, 2006 2:00 am |
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///////////////////////////////////////////////////////////////////////////
//// Library for a MicroChip 93C66B configured for a x16 org ////
//// ////
//// init_ext_eeprom(); Call before the other functions are used ////
//// ////
//// write_ext_eeprom(a, d); Write the byte d to the address a ////
//// ////
//// d = read_ext_eeprom(a); Read the byte d from the address a ////
//// ////
//// The main program may define eeprom_select, eeprom_di, eeprom_do ////
//// and eeprom_clk to override the defaults below. ////
//// ////
///////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2003 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS C ////
//// compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, reproduction ////
//// or distribution is permitted without written permission. ////
//// Derivative programs created using this software in object code ////
//// form are not restricted in any way. ////
///////////////////////////////////////////////////////////////////////////
#ifndef EEPROM_SELECT
#define EEPROM_SELECT PIN_C0
#define EEPROM_CLK PIN_C1
#define EEPROM_DI PIN_C2
#define EEPROM_DO PIN_C3
#endif
#define EEPROM_ADDRESS long int
#define EEPROM_SIZE 256
#define hi(x) (*(&x+1))
void init_ext_eeprom() {
BYTE cmd[2];
BYTE i;
output_low(EEPROM_DI);
output_low(EEPROM_CLK);
output_low(EEPROM_SELECT);
cmd[0]=0xc0;
cmd[1]=0x4;
for(i=1;i<=5;++i)
shift_left(cmd,2,0);
output_high(EEPROM_SELECT);
for(i=1;i<=11;++i) {
output_bit(EEPROM_DI, shift_left(cmd,2,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
}
void write_ext_eeprom(EEPROM_ADDRESS address, int16 data) {
BYTE cmd[3];
BYTE i;
cmd[0]=data;
cmd[1]=(BYTE)address;
cmd[2]=0xa|hi(address);
for(i=1;i<=4;++i)
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
output_low(EEPROM_DO);
for(i=1;i<=27;++i) {
output_bit(EEPROM_DI, shift_left(cmd,3,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
delay_ms(19);
output_high(EEPROM_DO);
}
BYTE read_ext_eeprom(EEPROM_ADDRESS address) {
BYTE cmd[3];
BYTE i;
int16 data;
cmd[0]=0;
cmd[1]=(BYTE)address;
cmd[2]=0xc|hi(address);
for(i=1;i<=4;++i)
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
for(i=1;i<27>11)
shift_left(&data,1,input(EEPROM_DO));
}
output_low(EEPROM_SELECT);
return(data);
} |
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baron
Guest
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| 93lc66b怎样使用& |
| Posted: Tue Sep 05, 2006 2:23 am |
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///////////////////////////////////////////////////////////////////////////
//// Library for a MicroChip 93C66B configured for a x16 org ////
//// ////
//// init_ext_eeprom(); Call before the other functions are used ////
//// ////
//// write_ext_eeprom(a, d); Write the byte d to the address a ////
//// ////
//// d = read_ext_eeprom(a); Read the byte d from the address a ////
//// ////
//// The main program may define eeprom_select, eeprom_di, eeprom_do ////
//// and eeprom_clk to override the defaults below. ////
//// ////
///////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2003 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS C ////
//// compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, reproduction ////
//// or distribution is permitted without written permission. ////
//// Derivative programs created using this software in object code ////
//// form are not restricted in any way. ////
///////////////////////////////////////////////////////////////////////////
#ifndef EEPROM_SELECT
#define EEPROM_SELECT PIN_C0
#define EEPROM_CLK PIN_C1
#define EEPROM_DI PIN_C2
#define EEPROM_DO PIN_C3
#endif
#define EEPROM_ADDRESS long int
#define EEPROM_SIZE 256
#define hi(x) (*(&x+1))
void init_ext_eeprom() {
BYTE cmd[2];
BYTE i;
output_low(EEPROM_DI);
output_low(EEPROM_CLK);
output_low(EEPROM_SELECT);
cmd[0]=0xc0;
cmd[1]=0x4;
for(i=1;i<=5;++i)
shift_left(cmd,2,0);
output_high(EEPROM_SELECT);
for(i=1;i<=11;++i) {
output_bit(EEPROM_DI, shift_left(cmd,2,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
}
void write_ext_eeprom(EEPROM_ADDRESS address, int16 data) {
BYTE cmd[3];
BYTE i;
cmd[0]=data;
cmd[1]=(BYTE)address;
cmd[2]=0xa|hi(address);
for(i=1;i<=4;++i)
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
output_low(EEPROM_DO);
for(i=1;i<=27;++i) {
output_bit(EEPROM_DI, shift_left(cmd,3,0));
output_high(EEPROM_CLK);
output_low(EEPROM_CLK);
}
output_low(EEPROM_DI);
output_low(EEPROM_SELECT);
delay_ms(19);
output_high(EEPROM_DO);
}
BYTE read_ext_eeprom(EEPROM_ADDRESS address) {
BYTE cmd[3];
BYTE i;
int16 data;
cmd[0]=0;
cmd[1]=(BYTE)address;
cmd[2]=0xc|hi(address);
for(i=1;i<=4;++i)
shift_left(cmd,3,0);
output_high(EEPROM_SELECT);
for(i=1;i<27>11)
shift_left(&data,1,input(EEPROM_DO));
}
output_low(EEPROM_SELECT);
return(data);
} |
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sjbaxter
Joined: 26 Jan 2006
Posts: 141
Location: Cheshire, UK
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| Posted: Tue Sep 05, 2006 2:42 am |
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baron,
I can't belive you posted this in two different threads, especially since this one is over 2 years old !!!, however ....
1) You need to READ the forum policy about posting CCS code !
2) You need to READ the copyright notice at the top of the code
| Code: |
(C) Copyright 1996,2003 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS C ////
//// compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, reproduction ////
//// or distribution is permitted without written permission. ////
//// Derivative programs created using this software in object code ////
//// form are not restricted in any way. ////
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3) It should be posted in the Code library, NOT in the general discussion forum.
_________________
Regards,
Simon. |
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baron
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