mirror of
https://github.com/kalymos/PsNee.git
synced 2026-03-10 12:48:22 +00:00
update comments
This commit is contained in:
kalymos
@@ -4,10 +4,15 @@
|
||||
|
||||
//#define ATmega328_168 // Fuses: JAP_FAT - H: DF, L: EE, E: FF; Other - H: DF, L: FF, E: FF.
|
||||
//#define ATmega32U4_16U4
|
||||
//#define ATtiny85_45_25 //
|
||||
//#define ATtiny85_45_25
|
||||
|
||||
/*
|
||||
Pinout Arduino,
|
||||
Fuses:
|
||||
BIOS patch - H: DF, L: EE, E: FF;
|
||||
ATmega - H: DF, L: FF, E: FF.
|
||||
ATtiny - H: DF, L: E2; E: FF,
|
||||
|
||||
Pinout Arduino:
|
||||
VCC-3.5v, PinGND-GND,
|
||||
D2-BIOS AX (Only for Bios patch)
|
||||
D3-BIOS AY (Only for BIOS ver. 1.0j-1.1j)
|
||||
@@ -19,7 +24,7 @@
|
||||
D9-GATE_WFCK
|
||||
RST-RESET* (Only for JAP_FAT)
|
||||
|
||||
Pinout ATtiny
|
||||
Pinout ATtiny:
|
||||
Pin1-RESET
|
||||
Pin2-LED
|
||||
Pin3-WFCK
|
||||
@@ -80,7 +85,22 @@ volatile bool wfck_mode = 0;
|
||||
// Code section
|
||||
//------------------------------------------------------------------------------------------------
|
||||
|
||||
//Counter increment function Fuses
|
||||
// *****************************************************************************************
|
||||
// Interrupt Service Routine: CTC_TIMER_VECTOR
|
||||
// Description:
|
||||
// This ISR is triggered by the Timer/Counter Compare Match event. It increments time-related
|
||||
// counters used for tracking microseconds and milliseconds.
|
||||
//
|
||||
// Functionality:
|
||||
// - Increments `microsec` by 10 on each interrupt call.
|
||||
// - Increments `count_isr` to keep track of the number of interrupts.
|
||||
// - When `count_isr` reaches 100, it means 1 millisecond has elapsed:
|
||||
// - `millisec` is incremented.
|
||||
// - `count_isr` is reset to 0.
|
||||
//
|
||||
// Notes:
|
||||
// - This method provides a simple way to maintain a software-based timekeeping system.
|
||||
// *****************************************************************************************
|
||||
ISR(CTC_TIMER_VECTOR) {
|
||||
microsec += 10;
|
||||
count_isr++;
|
||||
@@ -91,9 +111,30 @@ ISR(CTC_TIMER_VECTOR) {
|
||||
}
|
||||
}
|
||||
|
||||
//Timer register reset function
|
||||
// *****************************************************************************************
|
||||
// Function: Timer_Start
|
||||
// Description:
|
||||
// This function initializes and starts the timer by resetting the timer counter register
|
||||
// and enabling timer interrupts. It ensures compatibility across multiple microcontrollers.
|
||||
//
|
||||
// Supported Microcontrollers:
|
||||
// - ATmega328/168
|
||||
// - ATmega32U4/16U4
|
||||
// - ATtiny85/45/25
|
||||
//
|
||||
// Functionality:
|
||||
// - Clears the timer counter to ensure a fresh start.
|
||||
// - Enables the timer interrupt to allow periodic execution of ISR routines.
|
||||
// - If BIOS_PATCH is defined, it also clears the timer interrupt flag to prevent
|
||||
// unwanted immediate interrupts.
|
||||
//
|
||||
// Notes:
|
||||
// - The actual timer configuration is handled in MUC.h.
|
||||
// - This function ensures that all supported MCUs behave consistently.
|
||||
//
|
||||
// *****************************************************************************************
|
||||
void Timer_Start() {
|
||||
#if defined(ATmega328_168) || defined(ATmega32U4_16U4) || defined(ATtiny85_45_25) || defined(LGT8F328P)
|
||||
#if defined(ATmega328_168) || defined(ATmega32U4_16U4) || defined(ATtiny85_45_25)
|
||||
TIMER_TCNT_CLEAR;
|
||||
TIMER_INTERRUPT_ENABLE;
|
||||
#if defined(BIOS_PATCH)
|
||||
@@ -102,50 +143,71 @@ void Timer_Start() {
|
||||
#endif
|
||||
}
|
||||
|
||||
//Function to stop timer registers, and reset time counters
|
||||
// *****************************************************************************************
|
||||
// Function: Timer_Stop
|
||||
// Description:
|
||||
// Stops the timer by disabling interrupts and resetting the timer counter.
|
||||
// It also clears the time tracking variables (count_isr, microsec, millisec)
|
||||
// to ensure a fresh start when the timer is restarted.
|
||||
//
|
||||
// Supported Microcontrollers:
|
||||
// - ATmega328/168
|
||||
// - ATmega32U4/16U4
|
||||
// - ATtiny85/45/25
|
||||
//
|
||||
// *****************************************************************************************
|
||||
void Timer_Stop() {
|
||||
|
||||
#if defined(ATmega328_168) || defined(ATmega32U4_16U4) || defined(ATtiny85_45_25) || defined(LGT8F328P)
|
||||
TIMER_INTERRUPT_DISABLE;
|
||||
TIMER_TCNT_CLEAR;
|
||||
#if defined(ATmega328_168) || defined(ATmega32U4_16U4) || defined(ATtiny85_45_25)
|
||||
TIMER_INTERRUPT_DISABLE; // Disable timer interrupts to stop counting
|
||||
TIMER_TCNT_CLEAR; // Reset the timer counter to ensure proper timing when restarted
|
||||
#endif
|
||||
// Reset time tracking variables
|
||||
count_isr = 0;
|
||||
microsec = 0;
|
||||
millisec = 0;
|
||||
}
|
||||
|
||||
void Init() {
|
||||
#if defined(ATmega328_168) || defined(ATmega32U4_16U4) || defined(ATtiny85_45_25) || defined(LGT8F328P)
|
||||
TIMER_TCNT_CLEAR;
|
||||
SET_OCROA_DIV;
|
||||
SET_TIMER_TCCROA;
|
||||
SET_TIMER_TCCROB;
|
||||
#endif
|
||||
|
||||
#if defined(PATCH_SW) && defined(BIOS_PATCH)
|
||||
PIN_SWITCH_INPUT;
|
||||
PIN_SWITCH_SET;
|
||||
#endif
|
||||
|
||||
#ifdef LED_RUN
|
||||
PIN_LED_OUTPUT;
|
||||
#endif
|
||||
|
||||
GLOBAL_INTERRUPT_ENABLE;
|
||||
|
||||
PIN_SQCK_INPUT;
|
||||
PIN_SUBQ_INPUT;
|
||||
}
|
||||
|
||||
// borrowed from AttyNee. Bitmagic to get to the SCEX strings stored in flash (because Harvard architecture)
|
||||
// Read a specific bit from an array of bytes
|
||||
// *****************************************************************************************
|
||||
// Function: readBit
|
||||
// Description:
|
||||
// Reads a specific bit from an array of bytes.
|
||||
// This function helps retrieve SCEX data efficiently while working within
|
||||
// the constraints of Harvard architecture.
|
||||
//
|
||||
// Parameters:
|
||||
// - index: The bit position to read within the byte array.
|
||||
// - ByteSet: A pointer to the byte array containing the data.
|
||||
//
|
||||
// Return:
|
||||
// - Returns 1 if the specified bit at the given index is set (1).
|
||||
// - Returns 0 if the specified bit is cleared (0).
|
||||
//
|
||||
// Explanation:
|
||||
// - The function determines which byte contains the requested bit using (index / 8).
|
||||
// - It then calculates the bit position within that byte using (index % 8).
|
||||
// - A bitwise AND operation extracts the bit's value, and the double NOT (!!) operator
|
||||
// ensures a clean boolean return value (1 or 0).
|
||||
//
|
||||
// *****************************************************************************************
|
||||
uint8_t readBit(uint8_t index, const uint8_t* ByteSet) {
|
||||
return !!(ByteSet[index / 8] & (1 << (index % 8))); // Return true if the specified bit is set in ByteSet[index]
|
||||
}
|
||||
|
||||
|
||||
// Static arrays storing SCEX data for different regions
|
||||
// *****************************************************************************************
|
||||
// Function: inject_SCEX
|
||||
// Description:
|
||||
// Injects SCEX data corresponding to a given region ('e' for Europe, 'a' for America,
|
||||
// 'i' for Japan). This function is used for modulating the SCEX signal to bypass
|
||||
// region-locking mechanisms in certain PlayStation models.
|
||||
//
|
||||
// Parameters:
|
||||
// - region: A character ('e', 'a', or 'i') representing the target region.
|
||||
//
|
||||
// *****************************************************************************************
|
||||
void inject_SCEX(const char region) {
|
||||
// SCEX data patterns for different regions (SCEE, SCEA, SCEI)
|
||||
static const uint8_t SCEEData[] = {
|
||||
0b01011001,
|
||||
0b11001001,
|
||||
@@ -183,12 +245,12 @@ void inject_SCEX(const char region) {
|
||||
}
|
||||
else {
|
||||
// modulate DATA pin based on WFCK_READ
|
||||
if (wfck_mode) // If wfck_mode is true(pu22mode)
|
||||
if (wfck_mode) // WFCK mode (pu22mode enabled): synchronize PIN_DATA with WFCK clock signal
|
||||
{
|
||||
PIN_DATA_OUTPUT;
|
||||
Timer_Start();
|
||||
do {
|
||||
// read wfck pin
|
||||
// Read the WFCK pin and set or clear DATA accordingly
|
||||
if (PIN_WFCK_READ) {
|
||||
PIN_DATA_SET;
|
||||
}
|
||||
@@ -198,9 +260,9 @@ void inject_SCEX(const char region) {
|
||||
}
|
||||
}
|
||||
while (microsec < DELAY_BETWEEN_BITS);
|
||||
Timer_Stop(); // Stop timer
|
||||
Timer_Stop(); // Stop the timer after the delay
|
||||
}
|
||||
// PU-18 or lower mode
|
||||
// PU-18 or lower mode: simply set PIN_DATA as input with a delay
|
||||
else {
|
||||
PIN_DATA_INPUT;
|
||||
_delay_us(DELAY_BETWEEN_BITS);
|
||||
@@ -213,6 +275,29 @@ void inject_SCEX(const char region) {
|
||||
_delay_ms(DELAY_BETWEEN_INJECTIONS);
|
||||
}
|
||||
|
||||
void Init() {
|
||||
#if defined(ATmega328_168) || defined(ATmega32U4_16U4) || defined(ATtiny85_45_25)
|
||||
TIMER_TCNT_CLEAR;
|
||||
SET_OCROA_DIV;
|
||||
SET_TIMER_TCCROA;
|
||||
SET_TIMER_TCCROB;
|
||||
#endif
|
||||
|
||||
#if defined(PATCH_SW) && defined(BIOS_PATCH)
|
||||
PIN_SWITCH_INPUT;
|
||||
PIN_SWITCH_SET;
|
||||
#endif
|
||||
|
||||
#ifdef LED_RUN
|
||||
PIN_LED_OUTPUT;
|
||||
#endif
|
||||
|
||||
GLOBAL_INTERRUPT_ENABLE;
|
||||
|
||||
PIN_SQCK_INPUT;
|
||||
PIN_SUBQ_INPUT;
|
||||
}
|
||||
|
||||
int main() {
|
||||
uint8_t hysteresis = 0;
|
||||
uint8_t scbuf[12] = { 0 }; // SUBQ bit storage
|
||||
|
||||
Reference in New Issue
Block a user