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V19I: Added writing of GBA 4K eeprom save games
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sanni
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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: 2016-10-14
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Version: V19H
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Date: 2016-10-15
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Version: V19I
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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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@ -17,7 +17,7 @@
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Jeff Saltzman - 4-Way Button
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Wayne and Layne - Video-Game-Shield menu
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skaman - SNES enhancements and SA1 sram support
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nocash - Nintendo Power commands and lots of other info
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nocash - Nintendo Power and GBA Eeprom commands and lots of other info
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crazynation - N64 bus timing
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hkz/themanbehindthecurtain - N64 flashram commands
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jago85 - help with N64 stuff
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@ -34,7 +34,7 @@
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YamaArashi - GBA flashrom bank switch command
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**********************************************************************************/
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char ver[5] = "V19H";
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char ver[5] = "V19I";
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/******************************************
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Define Output
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@ -201,7 +201,7 @@ int foldern;
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char folder[24];
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// Array that holds the data
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byte sdBuffer[512];
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byte sdBuffer[1024];
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//******************************************
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// Bitmaps
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@ -6,7 +6,6 @@
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Variables
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*****************************************/
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char calcChecksumStr[5];
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byte cartBuffer[512];
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boolean readType;
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const int nintendoLogo[] PROGMEM = {
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@ -180,7 +179,18 @@ void gbaMenu() {
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display_Clear();
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sd.chdir("/");
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// 4K EEPROM
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print_Error(F("Not supported yet"), false);
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writeEeprom_GBA(4);
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writeErrors = verifyEEP_GBA(4);
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if (writeErrors == 0) {
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println_Msg(F("Verified OK"));
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display_Update();
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}
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else {
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print_Msg(F("Error: "));
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print_Msg(writeErrors);
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println_Msg(F(" bytes "));
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print_Error(F("did not verify."), false);
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}
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setROM_GBA();
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break;
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@ -189,6 +199,18 @@ void gbaMenu() {
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sd.chdir("/");
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// 64K EEPROM
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print_Error(F("Not supported yet"), false);
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/*writeEeprom_GBA(64);
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writeErrors = verifyEEP_GBA(64);
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if (writeErrors == 0) {
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println_Msg(F("Verified OK"));
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display_Update();
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}
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else {
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print_Msg(F("Error: "));
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print_Msg(writeErrors);
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println_Msg(F(" bytes "));
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print_Error(F("did not verify."), false);
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}*/
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setROM_GBA();
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break;
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@ -455,7 +477,7 @@ int testHeader() {
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// Set address to start of rom
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setAddress_GBA(0);
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// Read header into array sequentially
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readSeq_GBA(cartBuffer, 192);
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readSeq_GBA(sdBuffer, 192);
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// Reset ports or the 1st maskrom byte on eeprom carts won't be read correctly
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setROM_GBA();
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@ -468,7 +490,7 @@ int testHeader() {
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setAddress_GBA(0);
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// Read Header into array in random access mode
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readRand_GBA(0, cartBuffer, 192);
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readRand_GBA(0, sdBuffer, 192);
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logoErrors = checkLogo();
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if (logoErrors == 0) {
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@ -485,7 +507,7 @@ int testHeader() {
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int checkLogo() {
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int errors = 0;
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for (int currByte = 0x4; currByte < 0xA0; currByte++) {
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if (pgm_read_byte(&nintendoLogo[currByte]) != cartBuffer[currByte]) {
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if (pgm_read_byte(&nintendoLogo[currByte]) != sdBuffer[currByte]) {
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errors++;
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}
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}
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@ -502,16 +524,16 @@ void getCartInfo_GBA() {
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}
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else {
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// Get cart ID
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cartID[0] = char(cartBuffer[0xAC]);
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cartID[1] = char(cartBuffer[0xAD]);
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cartID[2] = char(cartBuffer[0xAE]);
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cartID[3] = char(cartBuffer[0xAF]);
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cartID[0] = char(sdBuffer[0xAC]);
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cartID[1] = char(sdBuffer[0xAD]);
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cartID[2] = char(sdBuffer[0xAE]);
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cartID[3] = char(sdBuffer[0xAF]);
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// Dump name into 8.3 compatible format
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byte myByte = 0;
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byte myLength = 0;
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for (int addr = 0xA0; addr <= 0xAB; addr++) {
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myByte = cartBuffer[addr];
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myByte = sdBuffer[addr];
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if (((char(myByte) >= 48 && char(myByte) <= 57) || (char(myByte) >= 65 && char(myByte) <= 122)) && myLength < 8) {
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romName[myLength] = char(myByte);
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myLength++;
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@ -519,15 +541,15 @@ void getCartInfo_GBA() {
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}
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// Get ROM version
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romVersion = cartBuffer[0xBC];
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romVersion = sdBuffer[0xBC];
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// Get Checksum as string
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sprintf(checksumStr, "%02X", cartBuffer[0xBD]);
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sprintf(checksumStr, "%02X", sdBuffer[0xBD]);
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// Calculate Checksum
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int calcChecksum = 0x00;
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for (int n = 0xA0; n < 0xBD; n++) {
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calcChecksum -= cartBuffer[n];
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calcChecksum -= sdBuffer[n];
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}
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calcChecksum = (calcChecksum - 0x19) & 0xFF;
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// Turn into string
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@ -1219,7 +1241,7 @@ void writeFLASH_GBA (boolean browseFile, unsigned long flashSize, uint32_t pos)
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}
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}
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// Check if the SRAM was written without any error
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// Check if the Flashrom was written without any error
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void verifyFLASH_GBA(unsigned long flashSize, uint32_t pos) {
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// Output a HIGH signal on CS_ROM(PH3) WE_FLASH(PH5)
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PORTH |= (1 << 3) | (1 << 5);
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@ -1276,6 +1298,46 @@ void verifyFLASH_GBA(unsigned long flashSize, uint32_t pos) {
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/******************************************
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GBA Eeprom SAVE Functions
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*****************************************/
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// Write eeprom from file
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void writeEeprom_GBA(word eepSize) {
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// Launch Filebrowser
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filePath[0] = '\0';
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sd.chdir("/");
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fileBrowser("Select eep file");
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// Create filepath
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sprintf(filePath, "%s/%s", filePath, fileName);
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display_Clear();
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print_Msg(F("Writing eeprom..."));
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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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// Fill romBuffer
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myFile.read(sdBuffer, 512);
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for (word i = 0; i < eepSize * 16; i += 64) {
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// Disable interrupts for more uniform clock pulses
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noInterrupts();
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// Write 512 bytes
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writeBlock_EEP(i, eepSize);
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interrupts();
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// Wait
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delayMicroseconds(200);
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}
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// Close the file:
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myFile.close();
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println_Msg(F("done"));
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display_Update();
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}
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else {
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println_Msg(F("Error"));
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print_Error(F("File doesnt exist"), false);
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}
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}
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// Read eeprom to file
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void readEeprom_GBA(word eepSize) {
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// Get name, add extension and convert to char array for sd lib
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@ -1322,13 +1384,13 @@ void readEeprom_GBA(word eepSize) {
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if (i != 0)
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myFile.seekCur(i * 64);
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// Write sdBuffer to file
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myFile.write(cartBuffer, 512);
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myFile.write(sdBuffer, 512);
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}
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myFile.close();
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}
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// Send address as bits to eeprom
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void setAddress_EEP(word currAddr, word numBits) {
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void send_GBA(word currAddr, word numBits) {
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for (word addrBit = numBits; addrBit > 0; addrBit--) {
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// If you want the k-th bit of n, then do
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// (n & ( 1 << k )) >> k
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@ -1351,6 +1413,87 @@ void setAddress_EEP(word currAddr, word numBits) {
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}
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}
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// Write 512K eeprom block
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void writeBlock_EEP(word startAddr, word eepSize) {
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// Setup
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// Set CS_ROM(PH3) WR(PH5) RD(PH6) to Output
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DDRH |= (1 << 3) | (1 << 5) | (1 << 6);
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// Set A0(PF0) to Output
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DDRF |= (1 << 0);
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// Set A23/D7(PC7) to Output
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DDRC |= (1 << 7);
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// Set CS_ROM(PH3) WR(PH5) RD(PH6) to High
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PORTH |= (1 << 3) | (1 << 5) | (1 << 6);
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// Set A0(PF0) to High
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PORTF |= (1 << 0);
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// Set A23/D7(PC7) to High
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PORTC |= (1 << 7);
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__asm__("nop\n\t""nop\n\t");
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// Write 64*8=512 bytes
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for (word currAddr = startAddr; currAddr < startAddr + 64; currAddr++) {
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// Set CS_ROM(PH3) to LOW
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PORTH &= ~ (1 << 3);
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// Send write request "10"
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// Set A0(PF0) to High
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PORTF |= (1 << 0);
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// Set WR(PH5) to LOW
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PORTH &= ~ (1 << 5);
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// Set WR(PH5) to High
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PORTH |= (1 << 5);
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// Set A0(PF0) to LOW
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PORTF &= ~ (1 << 0);
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// Set WR(PH5) to LOW
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PORTH &= ~ (1 << 5);
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// Set WR(PH5) to High
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PORTH |= (1 << 5);
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// Send either 6 or 14 bit address
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if (eepSize == 4) {
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send_GBA(currAddr, 6);
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}
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else {
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send_GBA(currAddr, 14);
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}
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Send data
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for (byte currByte = 0; currByte < 8; currByte++) {
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send_GBA(sdBuffer[currAddr * 8 + currByte], 8);
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}
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// Send stop bit
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// Set A0(PF0) to LOW
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PORTF &= ~ (1 << 0);
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// Set WR(PH5) to LOW
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PORTH &= ~ (1 << 5);
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// WR(PH5) to High
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PORTH |= (1 << 5);
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// Set CS_ROM(PH3) to High
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PORTH |= (1 << 3);
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// Wait until done
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// Set A0(PF0) to Input
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DDRF &= ~ (1 << 0);
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do {
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// Set CS_ROM(PH3) RD(PH6) to LOW
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PORTH &= ~((1 << 3) | (1 << 6));
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// Set CS_ROM(PH3) RD(PH6) to High
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PORTH |= (1 << 3) | (1 << 6);
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}
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while ((PINF & 0x1) == 0);
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// Set A0(PF0) to Output
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DDRF |= (1 << 0);
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}
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}
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// Reads 512 bytes from eeprom
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void readBlock_EEP(word startAddress, word eepSize) {
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// Setup
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@ -1389,10 +1532,10 @@ void readBlock_EEP(word startAddress, word eepSize) {
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// Send either 6 or 14 bit address
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if (eepSize == 4) {
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setAddress_EEP(currAddr, 6);
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send_GBA(currAddr, 6);
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}
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else {
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setAddress_EEP(currAddr, 14);
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send_GBA(currAddr, 14);
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}
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// Send stop bit
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@ -1445,11 +1588,38 @@ void readBlock_EEP(word startAddress, word eepSize) {
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// OR 8 bits into one byte for a total of 8 bytes
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for (byte j = 0; j < 64; j += 8) {
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cartBuffer[((currAddr - startAddress) * 8) + (j / 8)] = tempBits[0 + j] << 7 | tempBits[1 + j] << 6 | tempBits[2 + j] << 5 | tempBits[3 + j] << 4 | tempBits[4 + j] << 3 | tempBits[5 + j] << 2 | tempBits[6 + j] << 1 | tempBits[7 + j];
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sdBuffer[((currAddr - startAddress) * 8) + (j / 8)] = tempBits[0 + j] << 7 | tempBits[1 + j] << 6 | tempBits[2 + j] << 5 | tempBits[3 + j] << 4 | tempBits[4 + j] << 3 | tempBits[5 + j] << 2 | tempBits[6 + j] << 1 | tempBits[7 + j];
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}
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}
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}
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// Check if the SRAM was written without any error
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unsigned long verifyEEP_GBA(word eepSize) {
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unsigned long wrError = 0;
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//open file on sd card
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if (!myFile.open(filePath, O_READ)) {
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print_Error(F("SD Error"), true);
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}
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// Fill sd Buffer
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for (word i = 0; i < eepSize * 16; i += 64) {
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// Disable interrupts for more uniform clock pulses
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noInterrupts();
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readBlock_EEP(i, eepSize);
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interrupts();
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}
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// Compare
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for (int c = 0; c < eepSize * 16; c++) {
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if (sdBuffer[c] != myFile.read()) {
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wrError++;
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}
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}
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myFile.close();
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return wrError;
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}
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//******************************************
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// End of File
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//******************************************
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