mirror of
https://github.com/sanni/cartreader.git
synced 2024-09-21 07:39:44 +02:00
Tested and verified NES 2.0 header functionality
This commit is contained in:
Kreeblah
parent
c18d26e09f
commit
dcafe9b5a9
@ -12,16 +12,17 @@
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//26 Supported Mappers
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//101 Defines
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//131 Variables
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//189 Menu
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//308 Setup
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//337 Low Level Functions
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//584 CRC Functions
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//639 File Functions
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//801 Config Functions
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//1397 ROM Functions
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//2490 RAM Functions
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//2925 Eeprom Functions
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//3115 NESmaker Flash Cart Functions
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//191 Menu
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//310 Setup
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//339 Low Level Functions
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//586 CRC Functions
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//645 File Functions
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//819 NES 2.0 Header Functions
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//1095 Config Functions
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//1691 ROM Functions
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//2789 RAM Functions
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//3224 Eeprom Functions
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//3414 NESmaker Flash Cart Functions
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/******************************************
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Supported Mappers
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@ -169,6 +170,8 @@ boolean flashfound = false; // NESmaker 39SF040 Flash Cart
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File sdFile;
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char fileCount[3];
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File nesFile;
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uint32_t prg_crc32;
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uint32_t chr_crc32;
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char filePRG[] = "PRG.bin";
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char fileCHR[] = "CHR.bin";
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char fileNES[] = "CART.nes";
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@ -621,7 +624,7 @@ uint32_t crc32EEP(File &file, uint32_t &charcnt) {
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return ~oldcrc32;
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}
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void calcCRC(char* checkFile, unsigned long filesize) {
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void calcCRC(char* checkFile, unsigned long filesize, uint32_t* crcCopy) {
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uint32_t crc;
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crcFile = sd.open(checkFile);
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if (filesize < 1024)
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@ -631,6 +634,10 @@ void calcCRC(char* checkFile, unsigned long filesize) {
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crcFile.close();
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sprintf(tempCRC, "%08lX", crc);
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if (crcCopy != NULL) {
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*crcCopy = crc;
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}
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print_Msg(F("CRC: "));
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println_Msg(tempCRC);
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display_Update();
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@ -724,29 +731,6 @@ void CreateRAMFileInSD() {
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void outputNES() {
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display_Clear();
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uint32_t prg_crc32 = 0;
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uint32_t prg_size_bytes = 0;
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File prg_crc32_file;
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if(prg_crc32_file.open(filePRG, O_READ))
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{
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prg_size_bytes = 1024 * prg;
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prg_crc32 = crc32(prg_crc32_file, prg_size_bytes);
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prg_crc32_file.close();
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}
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uint32_t chr_crc32 = 0;
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uint32_t chr_size_bytes = 0;
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if(chr > 0)
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{
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File chr_crc32_file;
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if(prg_crc32_file.open(fileCHR, O_READ))
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{
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chr_size_bytes = 1024 * chr;
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chr_crc32 = crc32(chr_crc32_file, chr_size_bytes);
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chr_crc32_file.close();
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}
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}
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unsigned char* nes_header_bytes = getNESHeaderForFileInfo(1024 * prg, 1024 * chr, prg_crc32, chr_crc32);
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LED_RED_ON;
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@ -779,6 +763,9 @@ void outputNES() {
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{
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nesFile.write(nes_header_bytes, 16);
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free(nes_header_bytes);
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display_Clear();
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println_Msg(F("SET HEADER"));
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display_Update();
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}
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size_t n;
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@ -805,11 +792,12 @@ void outputNES() {
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nesFile.flush();
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nesFile.close();
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display_Clear();
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println_Msg(F("NES FILE OUTPUT!"));
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println_Msg(F(""));
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display_Update();
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calcCRC(fileNES, (prg + chr) * 1024);
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calcCRC(fileNES, (prg + chr) * 1024, NULL);
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LED_RED_OFF;
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LED_GREEN_OFF;
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LED_BLUE_OFF;
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@ -833,102 +821,100 @@ void CartFinish() {
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NES 2.0 Header Functions
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*****************************************/
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unsigned char* getNESHeaderForFileInfo(size_t prg_size, size_t chr_size, uint32_t prg_crc32, uint32_t chr_crc32)
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{
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if(prg_size == 0)
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{
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unsigned char* getNESHeaderForFileInfo(size_t prg_size, size_t chr_size, uint32_t prg_crc32, uint32_t chr_crc32) {
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if (prg_size == 0) {
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return NULL;
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}
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File nesDb;
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char* temp_line;
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char* nes20_header;
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int i;
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if(!nesDb.open("nes20db.txt", O_READ))
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{
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if (!sdFile.open("/nes20db.txt", FILE_READ)) {
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return NULL;
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} else {
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display_Clear();
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println_Msg(F("SEARCHING DB"));
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display_Update();
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}
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temp_line = malloc(256 * sizeof(char));
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while(nesDb.available())
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{
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i = 0;
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char temp_char;
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do
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{
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temp_char = nesDb.read();
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temp_line[i] = temp_char;
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i++;
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} while(nesDb.available() && temp_char != 0 && temp_char != '\n');
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i--;
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if(temp_line[i] == '\n')
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{
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temp_line[i] = 0;
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}
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while (sdFile.available()) {
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// We're reading fixed-length lines
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// padded with null characters
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sdFile.read(temp_line, 256);
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size_t prg_size_db;
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size_t chr_size_db;
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uint32_t prg_crc32_db;
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uint32_t chr_crc32_db;
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// Match PRG and CHR sizes first, then
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// match PRG CRC32 and, if the CHR size
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// is greater than zero, the CHR CRC32
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// as well.
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prg_size_db = getPRGSizeFromDatabaseRow(temp_line);
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if(prg_size == prg_size_db)
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{
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if (prg_size == prg_size_db) {
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chr_size_db = getCHRSizeFromDatabaseRow(temp_line);
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if(chr_size == chr_size_db)
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{
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if (chr_size == chr_size_db) {
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prg_crc32_db = getPRGCRC32FromDatabaseRow(temp_line);
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if(prg_crc32 == prg_crc32_db)
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{
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if(chr_size == 0)
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{
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nesDb.close();
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return getNES20HeaderBytesFromDatabaseRow(temp_line);
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if (prg_crc32 == prg_crc32_db) {
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if (chr_size == 0) {
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nes20_header = getNES20HeaderBytesFromDatabaseRow(temp_line);
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free(temp_line);
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sdFile.close();
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return nes20_header;
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} else {
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chr_crc32_db = getCHRCRC32FromDatabaseRow(temp_line);
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if (chr_crc32 == chr_crc32_db) {
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nes20_header = getNES20HeaderBytesFromDatabaseRow(temp_line);
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free(temp_line);
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sdFile.close();
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return nes20_header;
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}
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else if(chr_crc32 == chr_crc32_db)
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{
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nesDb.close();
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return getNES20HeaderBytesFromDatabaseRow(temp_line);
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}
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}
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}
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}
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}
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nesDb.close();
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free(temp_line);
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sdFile.close();
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return NULL;
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}
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char* getDatabaseFieldFromRow(const char* dbstr, uint8_t fieldnum)
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{
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// IMPORTANT: The string returned from this function MUST
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// be passed to free() when ready to be disposed of, in
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// order to avoid a memory leak.
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char* getDatabaseFieldFromRow(const char* dbstr, uint8_t fieldnum) {
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uint8_t field_start_pos = 0;
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uint8_t field_end_pos = 1;
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uint8_t current_field = 0;
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char* return_field;
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if(dbstr == NULL || fieldnum > 5)
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{
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// Field order, beginning with field 0:
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// PRG Size, CHR Size, PRG CRC32, CHR CRC32, Game Title, NES 2.0 Header (as ASCII)
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//
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// Each entry is on its own line, with a field delimeter of ^^
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// I'm assuming that nothing will ever use ^^ in a game title, but it's possible
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// that could be wrong, in which case a different field delimeter would need
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// to be used, and the logic here updated.
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if (dbstr == NULL || fieldnum > 5) {
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return NULL;
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}
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if(dbstr[0] == 0 || dbstr[0] == '\n')
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{
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if (dbstr[0] == 0 || dbstr[0] == '\n') {
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return NULL;
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}
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for(;field_end_pos < 255 && current_field < fieldnum; field_end_pos++)
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{
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if(field_start_pos < 254 && dbstr[field_start_pos] == '^' && dbstr[field_start_pos + 1] == '^')
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{
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for (; field_end_pos < 255 && current_field < fieldnum; field_end_pos++) {
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if (field_start_pos < 254 && dbstr[field_start_pos] == '^' && dbstr[field_start_pos + 1] == '^') {
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current_field++;
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field_start_pos = field_end_pos;
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field_end_pos = field_start_pos + 1;
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}
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if(current_field < fieldnum && dbstr[field_end_pos - 1] == '^' && dbstr[field_end_pos] == '^' || dbstr[field_end_pos] == 0 || dbstr[field_end_pos] == '\n')
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{
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if (current_field < fieldnum && dbstr[field_end_pos - 1] == '^' && dbstr[field_end_pos] == '^' || dbstr[field_end_pos] == 0 || dbstr[field_end_pos] == '\n') {
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current_field++;
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field_start_pos = field_end_pos + 1;
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field_end_pos = field_start_pos + 1;
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@ -937,22 +923,17 @@ char* getDatabaseFieldFromRow(const char* dbstr, uint8_t fieldnum)
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field_end_pos = field_start_pos;
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while((dbstr[field_end_pos - 1] != '^' || dbstr[field_end_pos] != '^') && dbstr[field_end_pos] != 0 && dbstr[field_end_pos] != '\n')
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{
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while ((dbstr[field_end_pos - 1] != '^' || dbstr[field_end_pos] != '^') && dbstr[field_end_pos] != 0 && dbstr[field_end_pos] != '\n') {
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field_end_pos++;
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}
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if(dbstr[field_end_pos] == '^')
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{
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if (dbstr[field_end_pos] == '^') {
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field_end_pos = field_end_pos - 2;
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}
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else
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{
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} else {
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field_end_pos = field_end_pos - 1;
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}
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if((field_end_pos - field_start_pos + 2) == 0)
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{
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if ((field_end_pos - field_start_pos + 2) == 0) {
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return NULL;
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}
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@ -965,19 +946,16 @@ char* getDatabaseFieldFromRow(const char* dbstr, uint8_t fieldnum)
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return return_field;
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}
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unsigned char getNibbleFromChar(char num)
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{
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unsigned char getNibbleFromChar(char num) {
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char ret_char = num & 0x0F;
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if(num > '9')
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{
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if (num > '9') {
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ret_char += 9;
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}
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return ret_char;
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}
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unsigned char getByteFromChars(char msn, char lsn)
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{
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unsigned char getByteFromChars(char msn, char lsn) {
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unsigned char return_char;
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return_char = (getNibbleFromChar(msn) << 4);
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return_char |= getNibbleFromChar(lsn);
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@ -985,23 +963,20 @@ unsigned char getByteFromChars(char msn, char lsn)
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return return_char;
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}
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unsigned char* strToBytes(const char* bytestr)
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{
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unsigned char* strToBytes(const char* bytestr) {
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uint8_t str_length;
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uint8_t byte_length;
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uint8_t str_idx;
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uint8_t byte_idx = 0;
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unsigned char* byte_arr;
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if(bytestr == NULL)
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{
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if (bytestr == NULL) {
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return NULL;
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}
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str_length = (uint8_t)strlen(bytestr);
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if(str_length % 2 != 0)
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{
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if (str_length % 2 != 0) {
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return NULL;
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}
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@ -1009,10 +984,8 @@ unsigned char* strToBytes(const char* bytestr)
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byte_arr = (unsigned char*)malloc(byte_length * sizeof(unsigned char));
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for(str_idx = 0; str_idx < str_length && bytestr[str_idx] != 0; str_idx = str_idx + 2)
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{
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if(!isxdigit(bytestr[str_idx]) || !isxdigit(bytestr[str_idx + 1]))
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{
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for (str_idx = 0; str_idx < str_length && bytestr[str_idx] != 0; str_idx = str_idx + 2) {
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if (!isxdigit(bytestr[str_idx]) || !isxdigit(bytestr[str_idx + 1])) {
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free(byte_arr);
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return NULL;
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}
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@ -1024,21 +997,17 @@ unsigned char* strToBytes(const char* bytestr)
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return byte_arr;
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}
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uint32_t crc32FromBytes(const unsigned char* bytearr)
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{
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if(bytearr == NULL)
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{
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uint32_t crc32FromBytes(const unsigned char* bytearr) {
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if (bytearr == NULL) {
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return 0;
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}
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return (uint32_t)(((uint32_t)bytearr[0] << 24) | ((uint32_t)bytearr[1] << 16) | ((uint32_t)bytearr[2] << 8) | (uint32_t)bytearr[3]);
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}
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size_t getPRGSizeFromDatabaseRow(const char* crctest)
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{
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size_t getPRGSizeFromDatabaseRow(const char* crctest) {
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char* prg_size_str = getDatabaseFieldFromRow(crctest, 0);
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if(prg_size_str == NULL)
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{
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if (prg_size_str == NULL) {
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return 0;
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}
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@ -1048,11 +1017,9 @@ size_t getPRGSizeFromDatabaseRow(const char* crctest)
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return return_size;
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}
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size_t getCHRSizeFromDatabaseRow(const char* crctest)
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{
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size_t getCHRSizeFromDatabaseRow(const char* crctest) {
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char* chr_size_str = getDatabaseFieldFromRow(crctest, 1);
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if(chr_size_str == NULL)
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{
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if (chr_size_str == NULL) {
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return 0;
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}
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@ -1062,19 +1029,16 @@ size_t getCHRSizeFromDatabaseRow(const char* crctest)
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return return_size;
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}
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uint32_t getPRGCRC32FromDatabaseRow(const char* crctest)
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{
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uint32_t getPRGCRC32FromDatabaseRow(const char* crctest) {
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char* prg_crc32_str = getDatabaseFieldFromRow(crctest, 2);
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if(prg_crc32_str == NULL)
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{
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if (prg_crc32_str == NULL) {
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return 0;
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}
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unsigned char* prg_crc32_bytes = strToBytes(prg_crc32_str);
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free(prg_crc32_str);
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if(prg_crc32_bytes == NULL)
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{
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if (prg_crc32_bytes == NULL) {
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return 0;
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}
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@ -1084,19 +1048,16 @@ uint32_t getPRGCRC32FromDatabaseRow(const char* crctest)
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return prg_crc32;
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}
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uint64_t getCHRCRC32FromDatabaseRow(const char* crctest)
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{
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uint64_t getCHRCRC32FromDatabaseRow(const char* crctest) {
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char* chr_crc32_str = getDatabaseFieldFromRow(crctest, 3);
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if(chr_crc32_str == NULL)
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{
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if (chr_crc32_str == NULL) {
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return 0;
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}
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unsigned char* chr_crc32_bytes = strToBytes(chr_crc32_str);
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free(chr_crc32_str);
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if(chr_crc32_bytes == NULL)
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{
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if (chr_crc32_bytes == NULL) {
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return 0;
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}
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@ -1106,26 +1067,25 @@ uint64_t getCHRCRC32FromDatabaseRow(const char* crctest)
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return chr_crc32;
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}
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char* getGameTitleFromDatabaseRow(const char* crctest)
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{
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// IMPORTANT: As with getDatabaseFieldFromRow(), the string
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// returned from this function must be passed to free() after
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// it's no longer needed in order to avoid a memory leak.
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char* getGameTitleFromDatabaseRow(const char* crctest) {
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char* game_title_str = getDatabaseFieldFromRow(crctest, 4);
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return game_title_str;
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}
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unsigned char* getNES20HeaderBytesFromDatabaseRow(const char* crctest)
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{
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unsigned char* getNES20HeaderBytesFromDatabaseRow(const char* crctest) {
|
||||
char* nes_header_str = getDatabaseFieldFromRow(crctest, 5);
|
||||
if(nes_header_str == NULL)
|
||||
{
|
||||
if (nes_header_str == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
unsigned char* nes_header_bytes = strToBytes(nes_header_str);
|
||||
free(nes_header_str);
|
||||
|
||||
if(nes_header_bytes == NULL)
|
||||
{
|
||||
if (nes_header_bytes == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -2262,7 +2222,7 @@ void readPRG() {
|
||||
println_Msg(F(""));
|
||||
display_Update();
|
||||
|
||||
calcCRC(fileName, prg * 1024);
|
||||
calcCRC(fileName, prg * 1024, &prg_crc32);
|
||||
}
|
||||
set_address(0);
|
||||
PHI2_HI;
|
||||
@ -2817,7 +2777,7 @@ void readCHR() {
|
||||
println_Msg(F(""));
|
||||
display_Update();
|
||||
|
||||
calcCRC(fileName, chr * 1024);
|
||||
calcCRC(fileName, chr * 1024, &chr_crc32);
|
||||
}
|
||||
}
|
||||
set_address(0);
|
||||
@ -3010,9 +2970,9 @@ void readRAM() {
|
||||
display_Update();
|
||||
|
||||
if ((mapper == 16) || (mapper == 159))
|
||||
calcCRC(fileName, eepsize);
|
||||
calcCRC(fileName, eepsize, NULL);
|
||||
else
|
||||
calcCRC(fileName, ram * 1024);
|
||||
calcCRC(fileName, ram * 1024, NULL);
|
||||
}
|
||||
}
|
||||
set_address(0);
|
||||
|
||||
BIN
sd/nes20db.txt
BIN
sd/nes20db.txt
Binary file not shown.
Loading…
Reference in New Issue
Block a user