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V33C: Fixed writing first 20 bytes of 27C322 eprom

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Apparently the step-up converter needs a little delay before it can provide the 12V VPP.
The verify function still does not work though, I have no clue why.
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sanni 2018-04-21 19:39:56 +02:00 committed by GitHub
parent f9c89d4666
commit f8f78cc5a1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 38 additions and 18 deletions
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4
Cart_Reader/Cart_Reader.ino
View File

@ -3,7 +3,7 @@
Author: sanni
Date: 04-21-2018
Version: V33B
Version: V33C
SD lib: https://github.com/greiman/SdFat
LCD lib: https://github.com/adafruit/Adafruit_SSD1306
@ -35,7 +35,7 @@
infinest - help with GB Memory cart
**********************************************************************************/
char ver[5] = "V33B";
char ver[5] = "V33C";
/******************************************
Define Starting Point

52
Cart_Reader/FLASH.ino
View File

@ -49,11 +49,11 @@ static const char epromMenuItem4[] PROGMEM = "Reset";
static const char* const menuOptionsEprom[] PROGMEM = {epromMenuItem1, epromMenuItem2, epromMenuItem3, epromMenuItem4};
void flashMenu() {
// create menu with title and 2 options to choose from
// create menu with title and 3 options to choose from
unsigned char flashSlot;
// Copy menuOptions out of progmem
convertPgm(menuOptionsFlash, 2);
flashSlot = question_box("Select flashrom slot", menuOptions, 2, 0);
convertPgm(menuOptionsFlash, 3);
flashSlot = question_box("Select flashrom slot", menuOptions, 3, 0);
// wait for user choice to come back from the question box menu
switch (flashSlot)
@ -336,7 +336,7 @@ void epromMenu() {
display_Clear();
time = millis();
write_Eprom();
verify_Eprom();
//verify_Eprom();
break;
case 3:
@ -1630,7 +1630,7 @@ void writeFlash16_29LV640() {
/******************************************
Eprom functions
*****************************************/
void writeWord_Eprom(unsigned long myAddress, word myData) {
word writeWord_Eprom(unsigned long myAddress, word myData) {
// Data out
DDRC = 0xFF;
DDRA = 0xFF;
@ -1643,7 +1643,7 @@ void writeWord_Eprom(unsigned long myAddress, word myData) {
PORTA = (myData >> 8) & 0xFF;
// Arduino running at 16Mhz -> one nop = 62.5ns
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
__asm__("nop\n\t");
// Switch VPP/OE(PH5) to HIGH
PORTH |= (1 << 5);
@ -1665,11 +1665,29 @@ void writeWord_Eprom(unsigned long myAddress, word myData) {
// Leave CE High for 1us for VPP Low to Chip Enable Low
delayMicroseconds(1);
// Data in
DDRC = 0x00;
DDRA = 0x00;
// Arduino running at 16Mhz -> one nop = 62.5ns
__asm__("nop\n\t");
// Setting CE(PH6) LOW
PORTH &= ~(1 << 6);
// Wait 1us for Chip Enable Low to Output Valid while program verify
delayMicroseconds(1);
// Read
word tempWord = ( ( PINA & 0xFF ) << 8 ) | ( PINC & 0xFF );
// Setting CE(PH6) HIGH
PORTH |= (1 << 6);
// Delay 130ns for Chip Enable High to Output Hi-Z
__asm__("nop\n\t""nop\n\t""nop\n\t");
return tempWord;
}
word readWord_Eprom(unsigned long myAddress) {
@ -1682,22 +1700,19 @@ word readWord_Eprom(unsigned long myAddress) {
PORTL = (myAddress >> 16) & 0xFF;
// Arduino running at 16Mhz -> one nop = 62.5ns
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
__asm__("nop\n\t");
// Setting CE(PH6) LOW
PORTH &= ~(1 << 6);
// Delay for at least 100ns for read
// Delay for 100ns for Address Valid/Chip Enable Low to Output Valid
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Read
word tempWord = ( ( PINA & 0xFF ) << 8 ) | ( PINC & 0xFF );
__asm__("nop\n\t");
// Setting CE(PH6) HIGH
PORTH |= (1 << 6);
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
return tempWord;
}
@ -1783,6 +1798,10 @@ void write_Eprom() {
if (fileSize > flashSize)
print_Error(F("File size exceeds flash size."), true);
// Switch VPP/OE(PH5) to HIGH
PORTH |= (1 << 5);
delay(1000);
int d = 0;
for (unsigned long currWord = 0; currWord < fileSize / 2; currWord += 256) {
// Fill SD buffer
@ -1793,6 +1812,7 @@ void write_Eprom() {
PORTB ^= (1 << 4);
// Work through SD buffer
word checkWord = 0xFFFF;
for (int c = 0; c < 256; c++) {
word myWord = ( ( sdBuffer[d + 1] & 0xFF ) << 8 ) | ( sdBuffer[d] & 0xFF );
@ -1804,7 +1824,7 @@ void write_Eprom() {
// Presto III allows up to 25 rewrites per word
do {
// Write word
writeWord_Eprom(currWord + c, myWord);
checkWord = writeWord_Eprom(currWord + c, myWord);
// Check for fail
if (n == 25) {
print_Msg("Program Error 0x");
@ -1817,7 +1837,7 @@ void write_Eprom() {
}
n++;
}
while (readWord_Eprom(currWord + c) != myWord);
while (checkWord != myWord);
}
d += 2;
}
@ -1846,11 +1866,11 @@ void verify_Eprom() {
blank = 0;
word d = 0;
for (unsigned long currWord = 0; currWord < fileSize / 2; currWord += 256) {
for (unsigned long currWord = 0; currWord < (fileSize / 2); currWord += 256) {
//fill sdBuffer
myFile.read(sdBuffer, 512);
for (int c = 0; c < 256; c++) {
word myWord = ((sdBuffer[d + 1] << 8) | sdBuffer[d]);
word myWord = ( ( sdBuffer[d + 1] & 0xFF ) << 8 ) | ( sdBuffer[d] & 0xFF );
if (readWord_Eprom(currWord + c) != myWord) {
blank++;
@ -1866,7 +1886,7 @@ void verify_Eprom() {
else {
println_Msg(F("Verification ERROR!"));
print_Msg(blank);
print_Error(F("B did not verify."), false);
print_Error(F(" words did not verify."), false);
display_Update();
}
// Close the file: