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V32: Add writing ST M27C322 Eproms (beta)
Needs custom flash adapter with 12V step-up converter modul for VPP. 5V VCC seems to work even though datasheet specifies 6.25V VCC while programming.
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@ -2,8 +2,8 @@
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Cartridge Reader for Arduino Mega2560
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Author: sanni
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Date: 2018-04-03
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Version: V31A
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Date: 2018-04-04
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Version: V32
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SD lib: https://github.com/greiman/SdFat
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LCD lib: https://github.com/adafruit/Adafruit_SSD1306
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@ -35,7 +35,7 @@
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infinest - help with GB Memory cart
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**********************************************************************************/
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char ver[5] = "V31A";
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char ver[5] = "V32";
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/******************************************
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Define Starting Point
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@ -134,6 +134,7 @@ SdFile myFile;
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#define mode_GBA 9
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#define mode_GBM 10
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#define mode_MD 11
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#define mode_EPROM 12
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/******************************************
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Variables
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@ -1286,6 +1287,9 @@ void loop() {
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else if (mode == mode_FLASH16) {
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flashromMenu16();
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}
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else if (mode == mode_EPROM) {
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epromMenu();
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}
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else if (mode == mode_SFM) {
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sfmMenu();
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}
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@ -18,7 +18,8 @@ unsigned long blank;
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// Flash start menu
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static const char flashMenuItem1[] PROGMEM = "8bit adapter";
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static const char flashMenuItem2[] PROGMEM = "16bit adapter";
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static const char* const menuOptionsFlash[] PROGMEM = {flashMenuItem1, flashMenuItem2};
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static const char flashMenuItem3[] PROGMEM = "Eprom adapter";
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static const char* const menuOptionsFlash[] PROGMEM = {flashMenuItem1, flashMenuItem2, flashMenuItem3};
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// 8bit Flash menu items
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static const char flash8MenuItem1[] PROGMEM = "Blankcheck";
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@ -40,12 +41,19 @@ static const char flash16MenuItem6[] PROGMEM = "Print";
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static const char flash16MenuItem7[] PROGMEM = "Reset";
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static const char* const menuOptionsFLASH16[] PROGMEM = {flash16MenuItem1, flash16MenuItem2, flash16MenuItem3, flash16MenuItem4, flash16MenuItem5, flash16MenuItem6, flash16MenuItem7};
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// Eprom menu items
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static const char epromMenuItem1[] PROGMEM = "Blankcheck";
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static const char epromMenuItem2[] PROGMEM = "Read 27C322";
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static const char epromMenuItem3[] PROGMEM = "Write 27C322";
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static const char epromMenuItem4[] PROGMEM = "Reset";
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static const char* const menuOptionsEprom[] PROGMEM = {epromMenuItem1, epromMenuItem2, epromMenuItem3, epromMenuItem4};
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void flashMenu() {
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// create menu with title and 2 options to choose from
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// create menu with title and 3 options to choose from
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unsigned char flashSlot;
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// Copy menuOptions out of progmem
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convertPgm(menuOptionsFlash, 2);
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flashSlot = question_box("Select flashrom slot", menuOptions, 2, 0);
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convertPgm(menuOptionsFlash, 3);
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flashSlot = question_box("Select flashrom slot", menuOptions, 3, 0);
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// wait for user choice to come back from the question box menu
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switch (flashSlot)
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@ -63,6 +71,13 @@ void flashMenu() {
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setup_Flash16();
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mode = mode_FLASH16;
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break;
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case 2:
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display_Clear();
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display_Update();
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setup_Eprom();
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mode = mode_EPROM;
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break;
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}
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}
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@ -290,6 +305,55 @@ void flashromMenu16() {
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wait();
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}
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void epromMenu() {
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// create menu with title "Eprom Writer" and 4 options to choose from
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unsigned char mainMenu;
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// Copy menuOptions out of progmem
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convertPgm(menuOptionsEprom, 4);
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mainMenu = question_box("Eprom Writer", menuOptions, 4, 0);
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// wait for user choice to come back from the question box menu
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switch (mainMenu)
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{
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case 0:
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display_Clear();
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println_Msg(F("Blankcheck"));
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display_Update();
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time = millis();
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blankcheck_Eprom();
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break;
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case 1:
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display_Clear();
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time = millis();
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read_Eprom();
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break;
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case 2:
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filePath[0] = '\0';
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sd.chdir("/");
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fileBrowser("Select file");
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display_Clear();
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time = millis();
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write_Eprom();
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break;
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case 3:
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time = 0;
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display_Clear();
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display_Update();
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asm volatile (" jmp 0");
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break;
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}
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if (time != 0) {
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print_Msg(F("Operation took: "));
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print_Msg((millis() - time) / 1000, DEC);
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println_Msg("s");
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display_Update();
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}
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wait();
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}
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/******************************************
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Setup
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*****************************************/
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@ -478,6 +542,34 @@ void setup_Flash16() {
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wait();
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}
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void setup_Eprom() {
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// Set Address Pins to Output
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//A0-A7
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DDRF = 0xFF;
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//A8-A15
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DDRK = 0xFF;
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//A16-A23
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DDRL = 0xFF;
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// Set Data Pins (D0-D15) to Input
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DDRC = 0x00;
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DDRA = 0x00;
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// Disable Internal Pullups
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PORTC = 0x00;
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PORTA = 0x00;
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// Set Control Pins to Output VPP/OE(PH5) CE(PH6)
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DDRH |= (1 << 5) | (1 << 6);
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// Setting CE(PH6) HIGH
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PORTH |= (1 << 6);
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// Setting VPP/OE(PH5) LOW
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PORTH &= ~(1 << 5);
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// 27C322 is a 4MB eprom
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flashSize = 4194304;
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}
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/******************************************
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I/O Functions
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*****************************************/
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@ -1534,6 +1626,202 @@ void writeFlash16_29LV640() {
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}
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}
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/******************************************
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Eprom functions
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*****************************************/
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void writeWord_Eprom(unsigned long myAddress, word myData) {
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// Data out
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DDRC = 0xFF;
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DDRA = 0xFF;
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// Set address
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PORTF = myAddress & 0xFF;
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PORTK = (myAddress >> 8) & 0xFF;
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PORTL = (myAddress >> 16) & 0xFF;
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// Set data
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PORTC = myData;
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PORTA = (myData >> 8) & 0xFF;
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// Arduino running at 16Mhz -> one nop = 62.5ns
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// Wait till output is stable
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__asm__("nop\n\t");
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// Switch VPP/OE(PH5) to HIGH
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PORTH |= (1 << 5);
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// Setting CE(PH6) LOW
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PORTH &= ~(1 << 6);
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// Leave VPP HIGH for a 50us programming pulse
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delayMicroseconds(50);
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// Setting CE(PH6) HIGH
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PORTH |= (1 << 6);
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// Switch VPP/OE(PH5) to LOW
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PORTH &= ~(1 << 5);
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// Leave VPP LOW for a little bit
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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}
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word readWord_Eprom(unsigned long myAddress) {
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// Data in
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DDRC = 0x00;
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DDRA = 0x00;
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// Set address
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PORTF = myAddress & 0xFF;
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PORTK = (myAddress >> 8) & 0xFF;
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PORTL = (myAddress >> 16) & 0xFF;
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// Arduino running at 16Mhz -> one nop = 62.5ns
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__asm__("nop\n\t");
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// Setting CE(PH6) LOW
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PORTH &= ~(1 << 6);
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Read
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word tempWord = ( ( PINA & 0xFF ) << 8 ) | ( PINC & 0xFF );
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__asm__("nop\n\t");
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// Setting CE(PH6) HIGH
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PORTH |= (1 << 6);
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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return tempWord;
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}
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void blankcheck_Eprom() {
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println_Msg(F("Please wait..."));
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display_Update();
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blank = 1;
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for (unsigned long currWord = 0; currWord < flashSize / 2; currWord++) {
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if (readWord_Eprom(currWord) != 0xFFFF) {
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currWord = flashSize / 2;
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blank = 0;
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}
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}
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if (blank) {
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println_Msg(F("Flashrom is empty."));
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display_Update();
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}
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else {
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print_Error(F("Error: Not blank"), false);
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}
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}
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void read_Eprom() {
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// Reset to root directory
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sd.chdir("/");
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// Get name, add extension and convert to char array for sd lib
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EEPROM_readAnything(10, foldern);
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sd.mkdir("FLASH", true);
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sd.chdir("FLASH");
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sprintf(fileName, "FL%d", foldern);
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strcat(fileName, ".bin");
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// write new folder number back to eeprom
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foldern = foldern + 1;
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EEPROM_writeAnything(10, foldern);
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display_Clear();
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print_Msg(F("Saving as "));
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print_Msg(fileName);
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println_Msg(F("..."));
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display_Update();
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// Open file on sd card
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if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
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println_Msg(F("Can't create file on SD."));
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display_Update();
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while (1);
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}
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word d = 0;
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for (unsigned long currWord = 0; currWord < flashSize / 2; currWord += 256) {
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for (word c = 0; c < 256; c++) {
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word myWord = readWord_Eprom(currWord + c);
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// Split word into two bytes
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// Right
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sdBuffer[d + 1] = ((myWord >> 8 ) & 0xFF);
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// Left
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sdBuffer[d] = (myWord & 0xFF);
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d += 2;
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}
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myFile.write(sdBuffer, 512);
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d = 0;
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}
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// Close the file:
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myFile.close();
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println_Msg(F("Finished reading."));
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display_Update();
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}
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void write_Eprom() {
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// Create filepath
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sprintf(filePath, "%s/%s", filePath, fileName);
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println_Msg(F("Flashing file "));
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println_Msg(filePath);
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display_Update();
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// Open file on sd card
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if (myFile.open(filePath, O_READ)) {
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// Get rom size from file
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fileSize = myFile.fileSize();
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if (fileSize > flashSize)
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print_Error(F("File size exceeds flash size."), true);
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int d = 0;
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for (unsigned long currWord = 0; currWord < fileSize / 2; currWord += 256) {
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// Fill SD buffer
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myFile.read(sdBuffer, 512);
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// Blink led
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if (currWord % 2048 == 0)
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PORTB ^= (1 << 4);
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// Work through SD buffer
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for (int c = 0; c < 256; c++) {
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word myWord = ( ( sdBuffer[d + 1] & 0xFF ) << 8 ) | ( sdBuffer[d] & 0xFF );
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// No need to write word if it's 0xFFFF
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if (myWord != 0xFFFF) {
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// Error counter
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byte n = 0;
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// Presto III allows up to 25 rewrites per word
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do {
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// Write word
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writeWord_Eprom(currWord + c, myWord);
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// Check for fail
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if (n == 25) {
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print_Msg("Program Error 0x");
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println_Msg(currWord + c, HEX);
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print_Msg("0x");
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print_Msg(readWord_Eprom(currWord + c), HEX);
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print_Msg(" != 0x");
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println_Msg(myWord, HEX);
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print_Error(F("Press button to reset"), true);
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}
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n++;
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}
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while (readWord_Eprom(currWord + c) != myWord);
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}
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d += 2;
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}
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d = 0;
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}
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// Close the file:
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myFile.close();
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}
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else {
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println_Msg(F("Can't open file on SD."));
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display_Update();
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}
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}
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//******************************************
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// End of File
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//******************************************
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