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Update PsNee.ino
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kalymos
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227
PsNee.ino
227
PsNee.ino
@@ -10,9 +10,9 @@
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// - Arduino Pro Micro has a different pin assignment and needs some easy porting. (ToDo)
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// - Use #define ARDUINO_BOARD
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// ATtiny:
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// - ATtiny45: LFUSE 0xE2 HFUSE 0xDF > internal oscillator, full 8Mhz speed (supported, tested)
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// - ATtiny85: Should work the same as ATtiny45 (supported, untested)
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// - ATtiny25: Not yet supported. 2kB flash, 128 Bytes RAM. Tricky.
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// - ATtiny45: LFUSE 0xE2 HFUSE 0xDF > internal oscillator, full 8Mhz speed (supported, tested)
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// - ATtiny25: Should work the same as ATtiny45 but doesn't have enough Flash nor RAM for PSNEEDEBUG (supported, untested)
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// - Use #define ATTINY_X5
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//
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// Some extra libraries might be required, depending on the board / chip used.
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@@ -25,43 +25,65 @@
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// - ATmega based > easy to use, fast and nice features for development
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// - ATtiny based > less features, internal clock has 10% variation
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//#define ARDUINO_BOARD
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#define ATTINY_X5
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#define ARDUINO_BOARD
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//#define ATTINY_X5
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#ifdef ARDUINO_BOARD
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// board pins (Do not change. Changing pins requires adjustments to MCU I/O definitions)
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#define sqck 6 // connect to PSX HC-05 SQCK pin
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#define subq 7 // connect to PSX HC-05 SUBQ pin
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#define data 8 // connect to point 6 in old modchip diagrams
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#define gate_wfck 9 // connect to point 5 in old modchip diagrams
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// MCU I/O definitions
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#define SUBQPORT PIND // MCU port for the 2 SUBQ sampling inputs
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#define SQCKBIT 6 // PD6 "SQCK" < Mechacon pin 26 (PU-7 and early PU-8 Mechacons: pin 41)
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#define SUBQBIT 7 // PD7 "SUBQ" < Mechacon pin 24 (PU-7 and early PU-8 Mechacons: pin 39)
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#define GATEWFCKPORT PINB // MCU port for the gate input (used for WFCK)
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#define DATAPORT PORTB // MCU port for the gate input (used for WFCK)
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#define GATEWFCKBIT 1 // PB1
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#define DATABIT 0 // PB0
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//#define PSNEEDEBUG
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#include <avr/pgmspace.h>
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#if defined(ARDUINO_BOARD)
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// board pins (Do not change. Changing pins requires adjustments to MCU I/O definitions)
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#define sqck 6 // connect to PSX HC-05 SQCK pin
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#define subq 7 // connect to PSX HC-05 SUBQ pin
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#define data 8 // connect to point 6 in old modchip diagrams
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#define gate_wfck 9 // connect to point 5 in old modchip diagrams
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// MCU I/O definitions
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#define SUBQPORT PIND // MCU port for the 2 SUBQ sampling inputs
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#define SQCKBIT 6 // PD6 "SQCK" < Mechacon pin 26 (PU-7 and early PU-8 Mechacons: pin 41)
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#define SUBQBIT 7 // PD7 "SUBQ" < Mechacon pin 24 (PU-7 and early PU-8 Mechacons: pin 39)
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#define GATEWFCKPORT PINB // MCU port for the gate input (used for WFCK)
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#define DATAPORT PORTB // MCU port for the gate input (used for WFCK)
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#define GATEWFCKBIT 1 // PB1
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#define DATABIT 0 // PB0
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#elif defined(ATTINY_X5) // ATtiny 25/45/85
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// extras
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#define USINGSOFTWARESERIAL
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// board pins (Do not change. Changing pins requires adjustments to MCU I/O definitions)
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#define sqck 0
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#define subq 1
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#define data 2
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#define gate_wfck 4
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#define debugtx 3
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// MCU I/O definitions
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#define SUBQPORT PINB
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#define SQCKBIT 0
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#define SUBQBIT 1
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#define GATEWFCKPORT PINB
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#define DATAPORT PORTB
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#define GATEWFCKBIT 4
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#define DATABIT 2
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#else
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#error "Select a board!"
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#endif
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#ifdef ATTINY_X5 // ATtiny 25/45/85
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// extras
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#include <SoftwareSerial.h>
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#include <avr/pgmspace.h>
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SoftwareSerial mySerial(-1, 3); // RX, TX. (RX -1 = off)
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// board pins (Do not change. Changing pins requires adjustments to MCU I/O definitions)
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#define sqck 0
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#define subq 1
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#define data 2
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#define gate_wfck 4
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#define debugtx 3
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// MCU I/O definitions
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#define SUBQPORT PINB
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#define SQCKBIT 0
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#define SUBQBIT 1
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#define GATEWFCKPORT PINB
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#define DATAPORT PORTB
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#define GATEWFCKBIT 4
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#define DATABIT 2
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#if defined(PSNEEDEBUG) && defined(USINGSOFTWARESERIAL)
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#include <SoftwareSerial.h>
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SoftwareSerial mySerial(-1, 3); // RX, TX. (RX -1 = off)
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#define DEBUG_PRINT(x) mySerial.print(x)
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#define DEBUG_PRINTHEX(x) mySerial.print(x, HEX)
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#define DEBUG_PRINTLN(x) mySerial.println(x)
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#define DEBUG_FLUSH mySerial.flush()
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#elif defined(PSNEEDEBUG) && !defined(USINGSOFTWARESERIAL)
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#define DEBUG_PRINT(x) Serial.print(x)
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#define DEBUG_PRINTHEX(x) Serial.print(x, HEX)
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#define DEBUG_PRINTLN(x) Serial.println(x)
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#define DEBUG_FLUSH Serial.flush()
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#else
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#define DEBUG_PRINT(x)
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#define DEBUG_PRINTHEX(x)
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#define DEBUG_PRINTLN(x)
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#define DEBUG_FLUSH
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#endif
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#define NOP __asm__ __volatile__ ("nop\n\t")
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@@ -137,21 +159,27 @@ void setup()
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pinMode(gate_wfck, INPUT);
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pinMode(subq, INPUT); // PSX subchannel bits
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pinMode(sqck, INPUT); // PSX subchannel clock
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#ifdef ATTINY_X5
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#if defined(PSNEEDEBUG) && defined(USINGSOFTWARESERIAL)
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pinMode(debugtx, OUTPUT); // software serial tx pin
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mySerial.begin(57600);
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mySerial.print("f "); mySerial.println(F_CPU);
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#else
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mySerial.begin(115200); // 13,82 bytes in 12ms, max for softwareserial. (expected data: ~13 bytes / 12ms)
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#elif defined(PSNEEDEBUG) && !defined(USINGSOFTWARESERIAL)
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Serial.begin(500000); // 60 bytes in 12ms (expected data: ~26 bytes / 12ms)
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DEBUG_PRINT("MCU frequency: "); DEBUG_PRINT(F_CPU); DEBUG_PRINTLN(" Hz");
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DEBUG_PRINTLN("Waiting for SQCK..");
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#endif
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#if defined(ARDUINO_BOARD)
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pinMode(LED_BUILTIN, OUTPUT); // Blink on injection / debug.
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digitalWrite(LED_BUILTIN, HIGH); // mark begin of setup
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Serial.begin(115200); // there is a relationship between symbol rate here and getting odd readings in the logs.
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Serial.print("MCU frequency: "); Serial.print(F_CPU); Serial.println(" Hz");
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Serial.println("Waiting for SQCK..");
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#endif
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// Board detection
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while (!digitalRead(sqck)); // wait for console power on (in case Arduino is powered externally)
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while (!digitalRead(gate_wfck)); // wait for gate / WFCK signal to appear
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#endif
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// wait for console power on and stable signals
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while (!digitalRead(sqck));
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while (!digitalRead(gate_wfck));
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// Board detection
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//
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// GATE: __----------------------- // this is a PU-7 .. PU-20 board!
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//
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// WFCK: __-_-_-_-_-_-_-_-_-_-_-_- // this is a PU-22 or newer board!
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@@ -165,7 +193,6 @@ void setup()
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}
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while ((millis() - now) < 1000); // sample 1s
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//Serial.print("highs: "); Serial.print(highs); Serial.print(" lows: "); Serial.println(lows);
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// typical readouts
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// PU-22: highs: 2449 lows: 2377
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if (lows > 100) {
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@@ -175,12 +202,11 @@ void setup()
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pu22mode = 0;
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}
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#ifdef ATTINY_X5
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mySerial.print("m "); mySerial.println(pu22mode);
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mySerial.flush();
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#else
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Serial.print("pu22mode: "); Serial.println(pu22mode);
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Serial.flush();
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#ifdef ATTINY_X5
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DEBUG_PRINT("m "); DEBUG_PRINTLN(pu22mode);
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#else
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DEBUG_PRINT("highs: "); DEBUG_PRINT(highs); DEBUG_PRINT(" lows: "); DEBUG_PRINTLN(lows);
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DEBUG_PRINT("pu22mode: "); DEBUG_PRINTLN(pu22mode);
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// Power saving
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// Disable the ADC by setting the ADEN bit (bit 7) of the ADCSRA register to zero.
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ADCSRA = ADCSRA & B01111111;
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@@ -188,8 +214,13 @@ void setup()
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ACSR = B10000000;
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// Disable digital input buffers on all analog input pins by setting bits 0-5 of the DIDR0 register to one.
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DIDR0 = DIDR0 | B00111111;
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#endif
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#if defined(ARDUINO_BOARD)
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digitalWrite(LED_BUILTIN, LOW); // setup complete
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#endif
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#endif
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DEBUG_FLUSH; // empty serial transmit buffer
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}
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void loop()
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@@ -198,39 +229,36 @@ void loop()
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static unsigned int timeout_clock_counter = 0;
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static byte bitbuf = 0; // SUBQ bit storage
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static bool sample = 0;
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static byte bitpos = 0;
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byte scpos = 0; // scbuf position
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noInterrupts(); // start critical section
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// yes, a goto jump label. This is to avoid a return out of critical code with interrupts disabled.
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// It prevents bad behaviour, for example running the Arduino Serial Event routine without interrupts.
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// Using a function makes shared variables messier.
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// SUBQ sampling is essential for the rest of the functionality. It is okay for this to take as long as it does.
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start:
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for (byte bitpos = 0; bitpos<8; bitpos++) { // Capture 8 bits for 12 runs > complete SUBQ transmission
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do {
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// nothing, reset on timeout
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// Capture 8 bits for 12 runs > complete SUBQ transmission
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bitpos = 0;
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for (; bitpos<8; bitpos++) {
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while (bitRead(SUBQPORT, SQCKBIT) == 1){
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// wait for clock to go low..
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// a timeout resets the 12 byte stream in case the PSX sends malformatted clock pulses, as happens on bootup
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timeout_clock_counter++;
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if (timeout_clock_counter > 1400){
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if (timeout_clock_counter > 1000){
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scpos = 0; // reset SUBQ packet stream
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timeout_clock_counter = 0;
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bitpos = 0;
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bitbuf = 0;
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goto start;
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}
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}
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while (bitRead(SUBQPORT, SQCKBIT) == 1); // wait for clock to go low..
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// sample the bit 3 no-ops after the clock went low. Tested on ATtiny45 @8Mhz
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NOP;NOP;NOP;
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// wait for clock to go high..
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while ((bitRead(SUBQPORT, SQCKBIT)) == 0);
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sample = bitRead(SUBQPORT, SUBQBIT);
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bitbuf |= sample << bitpos;
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do {
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// nothing
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} while ((bitRead(SUBQPORT, SQCKBIT)) == 0); // and high again..
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timeout_clock_counter = 0; // no problem with this bit
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}
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// one byte done
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scbuf[scpos] = bitbuf;
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scpos++;
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bitbuf = 0;
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@@ -239,34 +267,27 @@ start:
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if (scpos < 12){
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goto start;
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}
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interrupts(); // end critical section
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// log SUBQ packets
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#ifdef ATTINY_X5
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// log SUBQ packets. We only have 12ms to get the logs written out. Slower MCUs get less formatting.
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#ifdef ATTINY_X5
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if (!(scbuf[0] == 0 && scbuf[1] == 0 && scbuf[2] == 0 && scbuf[3] == 0)){ // a bad sector read is all 0 except for the CRC fields. Don't log it.
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for (int i = 0; i<12;i++) {
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if (scbuf[i] < 0x10) {mySerial.print("0");} // padding
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mySerial.print(scbuf[i], HEX);
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mySerial.print(" ");
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if (scbuf[i] < 0x10) {DEBUG_PRINT("0");} // padding
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DEBUG_PRINTHEX(scbuf[i]);
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}
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mySerial.println("");
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DEBUG_PRINTLN("");
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}
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#else
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#else
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if (!(scbuf[0] == 0 && scbuf[1] == 0 && scbuf[2] == 0 && scbuf[3] == 0)){
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for (int i = 0; i<12;i++) {
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if (scbuf[i] < 0x10) {Serial.print("0");} // padding
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Serial.print(scbuf[i], HEX);
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Serial.print(" ");
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if (scbuf[i] < 0x10) {DEBUG_PRINT("0");} // padding
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DEBUG_PRINTHEX(scbuf[i]);
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DEBUG_PRINT(" ");
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}
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Serial.println("");
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// Serial.flush();
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// if (scbuf[0] != 0x41)
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// digitalWrite(LED_BUILTIN, HIGH);
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// else
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// digitalWrite(LED_BUILTIN, LOW);
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DEBUG_PRINTLN("");
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}
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#endif
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#endif
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// check if read head is in wobble area
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// We only want to unlock game discs (0x41) and only if the read head is in the outer TOC area.
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@@ -295,14 +316,19 @@ start:
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// hysteresis value "optimized" using very worn but working drive on ATmega328 @ 16Mhz
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// should be fine on other MCUs and speeds, as the PSX dictates SUBQ rate
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if (hysteresis >= 14){
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hysteresis = 0;
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#ifdef ATTINY_X5
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mySerial.println("!");
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#else
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Serial.println("INJECT!INJECT!INJECT!INJECT!INJECT!INJECT!INJECT!INJECT!INJECT!");
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#endif
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// If the read head is still here after injection, resending should be quick.
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// Hysteresis naturally goes to 0 otherwise (the read head moved).
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hysteresis = 11;
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#ifdef ATTINY_X5
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DEBUG_PRINTLN("!");
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#else
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DEBUG_PRINTLN("INJECT!INJECT!INJECT!INJECT!INJECT!INJECT!");
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#endif
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#if defined(ARDUINO_BOARD)
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digitalWrite(LED_BUILTIN, HIGH);
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#endif
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pinMode(data, OUTPUT);
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digitalWrite(data, 0); // pull data low
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if (!pu22mode){
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@@ -324,6 +350,9 @@ start:
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pinMode(gate_wfck, INPUT); // high-z the line, we're done
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}
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pinMode(data, INPUT); // high-z the line, we're done
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#if defined(ARDUINO_BOARD)
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digitalWrite(LED_BUILTIN, LOW);
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#endif
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}
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// keep catching SUBQ packets forever
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}
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