625 lines
16 KiB
Python
Executable File
625 lines
16 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This working version corrected with the help of sickle :
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# https://discord.com/channels/642647820683444236/663664210525290507/836029253593858060
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# Corrected script by Sickle : http://psx.arthus.net/code/rawdog.py
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# Sickle - 26/04/2021 :
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# " Ooh, you were like frustratingly close dude! Few tiny issues:
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# - first of your 3 rolling buffers was bugged (other 2 were spot on)
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# - waiting too long between commands at points, unirom timed out
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# - var i was missing the i += chunkSize so we were stuck in a loop there (e.g. tried to send a second chonk)
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# - exit was gummed up with the main logic being in a while True: "
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# As suggested:
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# - Removed while True: loop
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# - moved rolling buffer loops to WaitForResponse()
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# - reduced sleeps
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# - inc var i with chunkSize
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#TODO
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# - reduce/remove sleeps
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# - keep listening!
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import sys
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import os
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import serial
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import time
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import calendar
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import math
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import signal
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DEBUG = 1
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# Working directory
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cwd = os.getcwd()
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levelsFolder = cwd + os.sep + os.sep
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# Receive commands from PSX
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# ~ Run = True
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Listen = 1
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uniDebugMode = 0
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Command = ""
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memAddr = ""
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flagAddr = ""
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loadFile = ""
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levelId = ""
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# One byte
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uno = int(1).to_bytes(1, byteorder='little', signed=False)
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data = 0
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# ~ dataSize = 0
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# Serial connection setup
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ser = serial.Serial('/dev/ttyUSB0')
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# Unirom can do 115200 and 510000 ( https://github.com/JonathanDotCel/NOTPSXSerial/blob/bce29e87cb858769fe60eb34d8eb123f9f36c8db/NOTPSXSERIAL.CS#L842 )
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ser.baudrate = '115200'
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# checkSum is the checkSum for the full data
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checkSum = 0
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# If set, it means the data transfer has been initiated
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Transfer = 0
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# Delay between write operations. These seem to be needed for the connection not to hang.
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sleepTime = 0.08 # Seems like safe minimum
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def sig_interrupt_handler(signal, frame):
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global Run
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Run = False
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def setDEBG():
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global sleepTime, ser, uniDebugMode
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if DEBUG:
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print("Sending DEBG command...")
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ser.write( bytes( 'DEBG' , 'ascii' ) )
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time.sleep(sleepTime)
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# Empty in waiting buffer
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ser.reset_input_buffer()
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time.sleep(sleepTime)
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uniDebugMode = 1
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def WaitForResponse( expectedAnswer ):
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# Get incoming data from the serial port in a rolling buffer
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# when the content of the buffer corresponds to 'expectedAnswer', returns True
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global DEBUG
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responseBuffer = ""
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success = False
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while True:
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if DEBUG > 1:
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print("Waiting for data in serial input buffer.")
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# If data in serial's incoming buffer
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if ser.in_waiting:
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if DEBUG > 1:
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print("Brace yourself, data is coming...")
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# Read 1 byte
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byteValue = ser.read(1)
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# Make sure byte value is < 128 so that it can be decoded to ascii
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if byteValue[0] < 128:
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responseBuffer += byteValue.decode('ascii')
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else:
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responseBuffer += '.'
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# Always keep response buffer 4 chars long
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if len( responseBuffer ) > 4:
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# Remove first char in buffer
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responseBuffer = responseBuffer[1:]
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# If response is ERR!, checksum check does not check, so check it again
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if responseBuffer == "ERR!":
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if DEBUG > 1:
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print("Checksum error !")
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success = False
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break
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# When expected response shows up, break from the while loop
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if responseBuffer == expectedAnswer:
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success = True
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break
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if DEBUG > 1:
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print( "Got : " + responseBuffer )
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responseBuffer = ""
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return success
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def CalculateChecksum( inBytes, skipFirstSector = False):
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returnVal = 0;
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i = 0
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if skipFirstSector:
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i = 2048
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while i < len( inBytes ):
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returnVal += inBytes[i];
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i += 1
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return returnVal;
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def WriteBytes( inData ):
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if DEBUG:
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print("Preparing to write bytes...")
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# The data needs to be split in 2K chunks
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chunkSize = 2048
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# BEGIN WHILE DATA
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i = 0
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while i < len( inData ):
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# BEGIN WHILE TRUE
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while True:
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# BEGIN TRY/EXCEPT
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try:
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# Calculate number of 2K chunks we're about to send
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numChunk = math.ceil( len( inData ) / chunkSize )
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# Calculate current chunk
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currentChunk = math.ceil( (i + 1) / chunkSize)
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if DEBUG:
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print( str ( numChunk + 1 - currentChunk ) + " chunks of " + str ( chunkSize) + " bytes to send " )
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# Avoid going out of range
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if ( i + chunkSize ) > len( inData ):
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chunkSize = len( inData ) - i
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print("Writing chunk " + str( currentChunk ) + " of " + str( numChunk ) )
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# ~ ser.write(inData)
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chunkChecksum = 0
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# Send inData in 2048B chunks
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for byte in range( chunkSize ):
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# Send byte
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if DEBUG > 1:
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print("Writing " + str( inData[ i + byte ].to_bytes(1, byteorder='little', signed=False) ) + " to serial..." )
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ser.write( inData[ i + byte ].to_bytes(1, byteorder='little', signed=False) )
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# Calculate chunk checksum
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chunkChecksum += inData[ i + byte ]
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time.sleep(sleepTime)
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if DEBUG:
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print( "Chunk cheksum : " + str( chunkChecksum ) )
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# Wait for output buffer to be empty
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# REMOVE ? Is this needed ?
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while ser.out_waiting:
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print("*")
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wait += 1
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time.sleep(sleepTime)
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# Wait for unirom to request the checksum
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if DEBUG > 1:
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print( "Chunk " + str( currentChunk ) + " waiting for unirom to request checksum (CHEK)..." )
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WaitForResponse( "CHEK" )
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# Send checksum
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if DEBUG:
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print( "Sending checksum to unirom..." );
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# ~ chunkChecksum = 170
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bytesChunkChecksum = chunkChecksum.to_bytes( 4, byteorder='little', signed = False )
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ser.write( bytesChunkChecksum )
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# ~ time.sleep( sleepTime )
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if DEBUG > 1:
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print( "Waiting for unirom to request more data (MORE)..." )
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# Wait for unirom to request MORE inData ( next chunk )
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if not WaitForResponse("MORE"):
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if DEBUG:
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print("ERROR ! Retrying...")
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raise Exception()
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if DEBUG:
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print( str( currentChunk ) + " chunk sent with correct checksum.")
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# Increment i from chunkSize
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i += chunkSize
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except Exception:
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continue
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# END TRY/EXCEPT
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break
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# END WHILE TRUE
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numChunk = 0
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# END WHILE DATA
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def SendBin( inData, memAddr ):
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global sleepTime
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dataSize = len( inData )
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if DEBUG:
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print("Data size : " + str( dataSize ) )
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# Prepare unirom for data reception - sent "SBIN" - received : "OKV2"
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if DEBUG > 1:
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print("Sending SBIN command...")
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ser.write( bytes( 'SBIN' , 'ascii' ) )
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time.sleep(sleepTime)
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# We're using unirom in debug mode, which means protocol version 2 is available
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# Upgrade protocol - sent "UPV2" - received : "OKAY"
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ser.write( bytes( 'UPV2' , 'ascii' ) )
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time.sleep(sleepTime)
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# Initialisation done, set flag
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# ~ Init = 1
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# From now on, we're using the rolling buffer
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if DEBUG > 1:
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print("Waiting for OKAY...")
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WaitForResponse("OKAY")
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# Calculate data checkSum
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checkSum = CalculateChecksum( inData )
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if DEBUG :
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print("Data checkSum : " + str(checkSum) )
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# Send memory address to load data to, size of data and checkSum
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# Unirom expects unsigned longs ( 32bits ), byte endianness little
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# Convert address from string to integer, then to ulong 32b
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bytesAddr = int( memAddr, 16 ).to_bytes( 4, byteorder='little', signed=False )
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# Write address to serial
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ser.write( bytesAddr )
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time.sleep(sleepTime)
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# Convert and write int size to serial
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bytesSize = dataSize.to_bytes( 4, byteorder='little', signed = False )
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ser.write( bytesSize )
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time.sleep(sleepTime)
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# Convert and write int chekSum to serial
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bytesChk = checkSum.to_bytes( 4, byteorder='little', signed = False )
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ser.write( bytesChk )
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time.sleep(sleepTime)
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# Send dat data
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WriteBytes( inData )
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def resetListener():
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global checkSum, data, Listen, Transfer, dataSize, memAddr, loadFile, flagAddr, levelId
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memAddr = ""
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flagAddr = ""
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loadFile = ""
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checkSum = 0
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data = 0
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dataSize = 0
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Transfer = 0
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levelId = 0
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Listen = 1
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ser.reset_input_buffer()
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ser.reset_output_buffer()
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def main(args):
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while True:
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global checkSum, data, Listen, Transfer, dataSize, memAddr, loadFile, flagAddr, levelId
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# Flush serial buffers to avoid residual data
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ser.reset_input_buffer()
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ser.reset_output_buffer()
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inputBuffer = ""
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# Listen to incomming connections on serial
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if Listen:
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print("Listening for incoming data...")
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if DEBUG > 1:
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print("memAddr : " + str(memAddr) + " - loadFile" + loadFile )
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while True:
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# If data on serial, fill buffer
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while ser.in_waiting:
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inputBuffer += ser.read().decode('ascii')
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if inputBuffer:
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if DEBUG:
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print( "Incoming data : " + inputBuffer )
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# parse command CMD:ARG1:ARG2(:ARGn)
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argList = []
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argList = inputBuffer.split(':')
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# Send command
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if argList[0] == "load" and len(argList) == 4:
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if len(argList[1]) < 8 or len(argList[2]) < 8:
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if DEBUG:
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print("Wrong data format, aborting...")
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break
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memAddr = argList[1]
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flagAddr = argList[2]
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loadFile = argList[3]
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ser.reset_input_buffer()
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inputBuffer = ""
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if DEBUG > 1:
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print( memAddr + " - " + flagAddr + " - " + loadFile )
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Listen = 0
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break
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else:
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ser.reset_input_buffer()
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inputBuffer = ""
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break
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if memAddr and loadFile:
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# Remove separator and ';1' at end of the string
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fileClean = loadFile.split(';')[0][1:]
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print("Received addresses and filename : " + memAddr + " - " + flagAddr + " - " + fileClean)
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# TODO : replace with a proper level naming scheme
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# right now, we're receiving currently loaded file
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# so we have to switch manually here.
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binFileName = ""
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if fileClean == "level0.bin":
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binFileName = "Overlay.lvl1"
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levelId = 1
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if fileClean == "level1.bin":
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binFileName = "Overlay.lvl0"
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levelId = 0
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if DEBUG:
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print(
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"Load Data to : " + memAddr + "\n" +
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"Reset flag at: " + flagAddr + "\n" +
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"File : " + loadFile + "\n" +
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"Bin : " + binFileName + " - ID : " + str(levelId)
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)
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# Open file as binary if bin filename is defined
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if binFileName:
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binFile = open( levelsFolder + binFileName, 'rb' )
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data = binFile.read()
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Transfer = 1
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else:
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print(" No filename provided, doing nothing ")
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resetListener()
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# If Init was set, initialize transfer and send data
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if Transfer:
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print("Initializing data transfer...")
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if not uniDebugMode:
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# Set unirom to debugmode - sent : "DEBG" - received : "DEBGOKAY"
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setDEBG()
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# Send level data
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SendBin( data, memAddr )
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# Set level changed flag
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if DEBUG:
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print("Sending value " + str( levelId.to_bytes(1, byteorder='little', signed=False) ) + " to " + flagAddr )
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time.sleep( sleepTime )
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SendBin( levelId.to_bytes(1, byteorder='little', signed=False) , flagAddr)
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# Reset everything
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resetListener()
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print("DONE!")
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return 0
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if __name__ == '__main__':
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import sys
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sys.exit(main(sys.argv))
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