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SMS retrode mode toggle and SRAM save data reading

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This commit is contained in:
jiyunomegami 2020-07-05 00:05:06 +09:00
parent 82ea59b942
commit cb938a65bc
1 changed files with 62 additions and 8 deletions
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70
Cart_Reader/SMS.ino
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@ -11,25 +11,25 @@
*****************************************/
// MD menu items
static const char SMSMenuItem1[] PROGMEM = "Read Rom";
static const char SMSMenuItem2[] PROGMEM = "Read Rom Retrode";
static const char SMSMenuItem3[] PROGMEM = "Reset";
static const char* const menuOptionsSMS[] PROGMEM = {SMSMenuItem1, SMSMenuItem2, SMSMenuItem3};
static const char SMSMenuItem2[] PROGMEM = "Read SRAM";
static const char SMSMenuItem3[] PROGMEM = "Toggle Retrode Mode";
static const char SMSMenuItem4[] PROGMEM = "Reset";
static const char* const menuOptionsSMS[] PROGMEM = {SMSMenuItem1, SMSMenuItem2, SMSMenuItem3, SMSMenuItem4};
// Set retrode_mode to true when using a retrode SMS/GG adapter
static bool retrode_mode = false;
void smsMenu() {
void _smsMenu() {
// create menu with title and 2 options to choose from
unsigned char mainMenu;
// Copy menuOptions out of progmem
convertPgm(menuOptionsSMS, 3);
mainMenu = question_box(F("Sega Master System"), menuOptions, 3, 0);
mainMenu = question_box(retrode_mode ? F("SMS/GG Retrode:YES") : F("SMS/GG Retrode:NO"), menuOptions, 3, 0);
// wait for user choice to come back from the question box menu
switch (mainMenu)
{
case 0:
retrode_mode = false;
display_Clear();
mode = mode_SMS;
setup_SMS();
@ -39,16 +39,19 @@ void smsMenu() {
break;
case 1:
retrode_mode = true;
display_Clear();
mode = mode_SMS;
setup_SMS();
// Change working dir to root
sd.chdir("/");
readROM_SMS();
readSRAM_SMS();
break;
case 2:
retrode_mode = !retrode_mode;
break;
case 3:
// Reset
resetArduino();
break;
@ -60,6 +63,10 @@ void smsMenu() {
wait();
}
void smsMenu() {
for (;;) _smsMenu();
}
/******************************************
Setup
*****************************************/
@ -370,6 +377,53 @@ void readROM_SMS() {
myFile.close();
}
// Read SRAM and save to the SD card
void readSRAM_SMS() {
// Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName);
strcat(fileName, ".SAV");
// create a new folder
EEPROM_readAnything(0, foldern);
sprintf(folder, "SMS/SAVE/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
display_Clear();
print_Msg(F("Saving to "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
// Open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_Error(F("SD Error"), true);
}
// Write the whole 32KB
// When there is only 8KB of SRAM, the contents should be duplicated
word bankSize = 16 * 1024UL;
for (byte currBank = 0x0; currBank < 2; currBank++) {
writeByte_SMS(0xFFFC, 0x08 | (currBank << 2));
// Blink led
PORTB ^= (1 << 4);
// Read 16KB from slot 2 which starts at 0x8000
for (word currBuffer = 0; currBuffer < bankSize; currBuffer += 512) {
// Fill SD buffer
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_SMS(0x8000 + currBuffer + currByte);
}
myFile.write(sdBuffer, 512);
}
}
// Close the file:
myFile.close();
}
//******************************************
// End of File
//******************************************