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Update PsNee.ino

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kalymos
2017-06-03 11:56:23 +02:00
committed by GitHub
parent c3cbdd858a
commit d4867fd516
1 changed files with 90 additions and 23 deletions
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PsNee.ino
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@@ -19,11 +19,18 @@
// P P P P P P
// PPPPPPPPPPPP P P PPPPPPPPPPP PPPPPPPPPPP VERSION 6!
//Update 7th of May 2017
//Branched and tweaked for use with the Position 0 switch on a PSX laser.
//(Requires a bit of sticky tape at the point where the switch touches the laser assembly.)
//This allows deterministic SCEX injections, without relying on timing. Also gets rid of connection wires for LID and RESET.
//WIP!
//Update 15th of May 2017
//PSNee now watches the subchannel data and looks at the position information contained within.
//This allows deterministic SCEX injections. It knows (almost) exactly when to inject the SCEX string.
//Therefore it is now a stealth modchip :)
//Required connections: GND, VCC, data, gate, SQCL, SUBQ
//No more need to watch the PSX reset or lid open signals or any other typical modchip points (like "sync")
//WIP! Only tested on PU-18 board. Should work fine on PU-7, PU-8, PU-18 and PU-20.
//Will need adaption for PU-22 to PU-41 (SCPH-750x, 900x and PSOne).
//Note: Once this is installed in a PSX, mind the Pin13 LED that many Arduino boards have. Do not upload new sketches while the PSX is on!
//(If the PSX is on while uploading a sketch (making the LED blink), a voltage will be fed back into the SCLK pin on the HC-05 in the PSX.
//This didn't break my PSX in testing but it does stun the chip and halt CD operation. I'm thinking of a better method to do this but for now I need Arduino pin13..)
//Very much recommended to install a 3.3V chip!
//UPDATED AT MAY 14 2016, CODED BY THE FRIENDLY FRIETMAN :-)
@@ -122,10 +129,16 @@
// Includes!
//--------------------------------------------------
#include <Flash.h>
#include "SPI.h"
byte buf [12]; // We will be capturing PSX "SUBQ" packets, and there are 12 of them per sector.
int pos; // buffer position
int wobbleCounter; // if treshold reached, output SCEX string
//#define DEBUG
//--------------------------------------------------
// Arduino selection!
//--------------------------------------------------
// ATTINY untested with SPI additions!
//#define ATTINY //Make that "#define ARDUINO_UNO" if you want to compile for Arduino Uno instead of ATTiny25/45/85
#define ARDUINO_UNO //Make that "#define ARDUINO_UNO" if you want to compile for Arduino Uno instead of ATTiny25/45/85
@@ -134,11 +147,11 @@
int data = 8; //The pin that outputs the SCEE SCEA SCEI string
int gate = 9; //The pin that outputs the SCEE SCEA SCEI string
int lid = 10; //The pin that gets connected to the internal CD lid signal; active high
int biosA18 = 11; //Only used in SCPH-102 PAL mode
int biosD2 = 12; //Only used in SCPH-102 PAL mode
int biosA18 = 11; //Address 18; Only used in SCPH-102 PAL mode // ToDo: rearrange. This is the MOSI pin for SPI.
int biosD2 = 12; //Data 2; Only used in SCPH-102 PAL mode
int delay_ntsc = 2350;
int delay_between_bits = 4;
int delay_between_injections = 74;
int delay_between_bits = 4; // 250 bits/s
int delay_between_injections = 74; // delay for this time while keeping data line pulled low
#endif
#ifdef ATTINY
@@ -156,12 +169,15 @@ int delay_between_injections = 68;
//--------------------------------------------------
// Global variables!
//--------------------------------------------------
//None, just like it should be!
//None, just like it should be! // Sorry, couldn't resist
//--------------------------------------------------
// Seperate functions!
//--------------------------------------------------
void NTSC_fix()
{
//needs rework, new pin assigments
//Make sure all pins are inputs
DDRB = 0x00;
@@ -258,7 +274,6 @@ void inject_SCEI()
pinMode(data, OUTPUT);
digitalWrite(data, 0);
delay(delay_between_injections);
}
@@ -276,7 +291,7 @@ void inject_multiple_times(int number_of_injection_cycles)
void inject_playstation()
{
NTSC_fix();
//NTSC_fix(); //needs rework, new pin assigments
delay(6900);
pinMode(data, OUTPUT);
@@ -284,7 +299,7 @@ void inject_playstation()
digitalWrite(data, 0);
digitalWrite(gate, 0);
for (int loop_counter = 0; loop_counter < 20; loop_counter = loop_counter + 1)
for (int loop_counter = 0; loop_counter < 235; loop_counter = loop_counter + 1)
{
inject_SCEI();
//inject_SCEA();
@@ -304,11 +319,23 @@ void setup()
// Arduino docs say all INPUT pins are high impedence by default. Let's be explicit!
pinMode(data, INPUT);
pinMode(gate, INPUT);
//inject_playstation(); // not required when watching the POS0 switch (except when NTSC_fix() is required!)
// TODO :)
//attachInterrupt(digitalPinToInterrupt(2), function_name, CHANGE);
// We just want passive sampling of the SPI data. Never output anything nor pull lines high / low.
pinMode(MOSI, INPUT); // Arduino pin 11
pinMode(SCK, INPUT); // Arduino pin 13
pinMode(MISO, INPUT); // just for safety
pinMode(SS, INPUT); // just for safety
SPCR = 0b01101100; // LSBFIRST, SPI_MODE3, SPI_CLOCK_DIV4, SPI enabled, Slave mode, CPOL = 1, CPHA = 1
//inject_playstation(); // not required when watching subchannel data
#ifdef DEBUG
Serial.begin (115200); // debugging
Serial.print("SPCR setup to ");
Serial.println(SPCR, HEX);
#endif
pos = 0;
wobbleCounter = 0;
}
//----------------------------------------------------------------
@@ -317,24 +344,64 @@ void setup()
void loop()
{
bool POS0Sense = digitalRead(A0); // Active low
// Hardware SPI interface requires a constant reset (for some reason. Find out why?)
// This toggles the SPI enable bit
SPCR = SPCR & 0b10111111;
SPCR = SPCR | 0b01000000;
// When not doing this regularly, the captured data gets misaligned with the PSX SCLK. Weird.
if (!POS0Sense) {
while(!(SPSR & (1<<SPIF))); // wait for a byte
byte c = SPDR;
if (c == 0x41) {
buf[0] = c; // Is this a psx data cd? if so, align buffer start to this!
pos = 1;
return;
}
if (pos == 0) return; // 0x41 byte not yet found > loop
buf[pos] = c;
pos++;
if(pos == 12) // 12 "packets" make up the SUBQ for one sector. pos is 12 because it got incremented once more.
{
pos = 0;
#ifdef DEBUG
for (int i = 0; i<12;i++){ // print the buffer
Serial.print(buf[i], HEX);
Serial.print(" ");
}
Serial.println("");
#endif
// check if this is the wobble area
if (buf[1] == 0x00 && ( buf[2] == 0xA2 || buf[2] == 0xA1 || buf[2] == 0xA0 ) ) { // 0x41, 0x00, 0xA0 etc appears to be the wobble area
//looks like it!
wobbleCounter++;
}
else if (wobbleCounter > 0){
wobbleCounter--;
}
}
if (wobbleCounter >= 3) {
// Read head is in wobble area. Inject SCEX.
#ifdef DEBUG
Serial.println("Inject!");
#endif
pinMode(gate, OUTPUT);
digitalWrite(gate, 0);
digitalWrite(LED_BUILTIN, 1);
// loop_counter is a tweak point. It depends on how good the contact to the POS0 switch is.
// loop_counter is a tweak point. More than 6 can trip antimod detection. 2 works. 1 is outputting once per sector in theory, doesn't work.
for (int loop_counter = 0; loop_counter < 3; loop_counter = loop_counter + 1)
{
inject_SCEI();
//inject_SCEA();
//inject_SCEE();
}
digitalWrite(LED_BUILTIN, 0);
pinMode(gate, INPUT);
pinMode(data, INPUT);
wobbleCounter = 0;
}
}