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V17E: Added +500ns delay per byte on SNES reads

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That's an added delay of 0.5 seconds per read Megabyte.
This commit is contained in:
sanni 2016-08-15 15:12:36 +02:00 committed by GitHub
parent a3afac7b3e
commit 2aa75f02b5
2 changed files with 22 additions and 56 deletions
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53
Cart_Reader/Cart_Reader.ino
View File

@ -2,15 +2,15 @@
Nintendo Cart Reader for Arduino Mega2560
Author: sanni
Date: 2016-07-31
Version: V17D
Date: 2016-08-15
Version: V17E
SD lib: https://github.com/greiman/SdFat
LCD lib: https://github.com/adafruit/Adafruit_SSD1306
Clockgen: https://github.com/etherkit/Si5351Arduino
RGB Tools lib: https://github.com/joushx/Arduino-RGB-Tools
Compiled with Arduino 1.6.9
Compiled with Arduino 1.6.10
Thanks to:
MichlK - ROM-Reader for Super Nintendo
@ -31,7 +31,7 @@
Pickle - SDD1 fix
**********************************************************************************/
char ver[5] = "V17D";
char ver[5] = "V17E";
/******************************************
Choose Output
@ -635,15 +635,6 @@ unsigned char question_box(const char* question, char answers[7][20], int num_an
}
}
void fileBrowser(const char browserTitle[]) {
if (enable_OLED) {
fileBrowser_OLED(browserTitle);
}
if (enable_Serial) {
fileBrowser_Serial(browserTitle);
}
}
/******************************************
Serial Out
*****************************************/
@ -678,40 +669,6 @@ byte questionBox_Serial(const char* question, char answers[7][20], int num_answe
return incomingByte;
}
// Prompt a filename from the Serial Monitor
void fileBrowser_Serial(const char browserTitle[]) {
Serial.println(browserTitle);
// Print all files in root of SD
Serial.println(F("Name - Size"));
// Rewind filesystem and reset filepath
sd.vwd()->rewind();
filePath[0] = '\0';
while (myFile.openNext(sd.vwd(), O_READ)) {
if (myFile.isHidden()) {
}
else {
if (myFile.isDir()) {
// Indicate a directory.
Serial.write('/');
}
myFile.printName(&Serial);
Serial.write(' ');
myFile.printFileSize(&Serial);
Serial.println();
}
myFile.close();
}
Serial.println("");
Serial.print(F("Please enter a filename in 8.3 format: _"));
while (Serial.available() == 0) {
}
String strBuffer;
strBuffer = Serial.readString();
strBuffer.toCharArray(fileName, 13);
Serial.println(fileName);
}
/******************************************
RGB LED
*****************************************/
@ -958,7 +915,7 @@ unsigned char questionBox_OLED(const char* question, char answers[7][20], int nu
/******************************************
Filebrowser Module
*****************************************/
void fileBrowser_OLED(const char browserTitle[]) {
void fileBrowser(const char browserTitle[]) {
char fileNames[30][26];
int currFile;
filebrowse = 1;

25
Cart_Reader/SNS.ino
View File

@ -310,8 +310,8 @@ byte readBank_SNES(byte myBank, word myAddress) {
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
// Arduino running at 16Mhz -> one nop = 62.5ns
__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");
// Arduino running at 16Mhz -> one nop = 62.5ns -> 1000ns total
__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""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Read
byte tempByte = PINC;
@ -429,6 +429,10 @@ void getCartInfo_SNES() {
wait();
}
else if (enable_Serial) {
println_Msg(F(" "));
}
// Start manual config
if (manualConfig == 1) {
confMenu();
@ -965,6 +969,16 @@ void readSRAM () {
sd.mkdir(folder, true);
sd.chdir(folder);
// Signal end of process
print_Msg(F("Reading to SAVE/"));
print_Msg(romName);
print_Msg(F("/"));
print_Msg(foldern);
print_Msg(F("/"));
print_Msg(fileName);
print_Msg(F("..."));
display_Update();
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
@ -1012,12 +1026,7 @@ void readSRAM () {
myFile.close();
// Signal end of process
print_Msg(F("Saved to SAVE/"));
print_Msg(romName);
print_Msg(F("/"));
print_Msg(foldern - 1);
print_Msg(F("/"));
println_Msg(fileName);
println_Msg(F("Done"));
display_Update();
}