Add ondemand ovl upload script
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263
loadlvl.py
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263
loadlvl.py
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import sys
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import serial
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import time
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import math
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ser = serial.Serial('/dev/ttyUSB0')
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ser.baudrate = '115200'
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chunkSize = 2048
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responseBuffer = ''
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address = '800b1470' # We're receiving this info as a string from the psx
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# test data
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data = int(111111111111111111111111111111111).to_bytes(14, byteorder='big', signed=False)
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size = len( data )
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checkSum = 0 # should be 1701
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Ssbin = 0
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Saddr = 0
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Slen = 0
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def main(args):
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global checkSum, responseBuffer, Ssbin, Saddr, Slen, chunkSize
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# Just to be sure
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ser.reset_input_buffer()
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ser.reset_output_buffer()
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i = 0
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while i < len( data ):
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checkSum += data[i];
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i += 1
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print("checkSum : " + str(checkSum) )
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while True:
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# ~ global responseBuffer, Ssbin, Saddr, Slen, chunkSize
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if not Ssbin:
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print("Sending DEBG command...")
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ser.write( bytes( 'DEBG' , 'ascii' ) )
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time.sleep(.3)
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# Empty in waiting buffer to get rid of 'DEBGOKAY'
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ser.reset_input_buffer()
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time.sleep(.5)
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print("Sending SBIN command...")
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ser.write( bytes( 'SBIN' , 'ascii' ) )
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time.sleep(.5)
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ser.write( bytes( 'UPV2' , 'ascii' ) )
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Ssbin = 1
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time.sleep(.5)
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while True:
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# ~ while ser.in_waiting:
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print(".")
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responseBuffer += ser.read(12).decode('ascii' )
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break
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print( "Buffer : " + responseBuffer )
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if responseBuffer[-4:] == "OKAY":
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responseBuffer = ""
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# convert addr str > int > bytes
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bytesAddr = int( address, 16 ).to_bytes( 4, byteorder='big', signed=False )
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# same as ?
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# ~ hexAddr = bytearray()
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# ~ hexAddr.append( 0x80)
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# ~ hexAddr.append( 0x0b)
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# ~ hexAddr.append( 0x14)
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# ~ hexAddr.append( 0x70)
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# ~ hexAddr.reverse()
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# Convert and write address bytes to serial
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ser.write( bytesAddr )
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time.sleep(.5)
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# Convert and write size bytes to serial
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bytesSize = size.to_bytes( 4, byteorder='big', signed = False )
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ser.write( bytesSize )
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time.sleep(.5)
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# Convert and write chekSum bytes to serial
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bytesChk = checkSum.to_bytes( 4, byteorder='big', signed = False )
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ser.write( bytesChk )
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time.sleep(.5)
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# Convert and write data bytes to serial
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numChunk = math.ceil( len( data ) / chunkSize )
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wait = 0
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i = 0
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while i < len( data ):
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chunkChk = 0
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if ( i + chunkSize ) > len( data ):
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chunkSize = len( data ) - i
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print("Writing chunk " + str( i + 1 ) + " of " + str( numChunk ) )
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# we know data length is < 2048, we'd need some code to cut the data in 2K chunks in real use case
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print( "Input buffer b : " + str(ser.out_waiting))
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print( "Output buffer b : " + str(ser.out_waiting))
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# ~ for byte in range( len( data ) ):
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ser.write( data )
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# ~ time.sleep(.005)
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time.sleep(.5)
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# Put chunk checksum calculation here
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# Wait for output buffer to be empty
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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(.5)
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print("Wait : "+ str(wait))
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# reset input buffer
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print( "Input buffer : " + str(ser.in_waiting))
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print( "Output buffer : " + str(ser.out_waiting))
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# ~ ser.reset_input_buffer()
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# wait for unirom to request the checksum
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print( "Chunk" + str( i + 1 ) + " waiting for unirom to request checksum (CHEK)..." )
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# Wait for "CHEK"
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while True:
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if ser.in_waiting:
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print( "Input buffer : " + str(ser.in_waiting))
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# ~ print(".")
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chkValue = ser.read()
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# Make sure byte value is < 128 so that it can be decoded to ascii :: always getting '\xc7' 'q' '\x1c' '\xc7' '\xab' '\xed' '1' '\x05'
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print( "chkVal : " + str(chkValue) + " - " + str( int.from_bytes(chkValue, 'big') ) )
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if int.from_bytes(chkValue, 'big') < 128:
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responseBuffer += chkValue.decode('ascii')
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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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# ~ print( "Response buffer : " + responseBuffer )
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if responseBuffer == "CHEK":
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print( "Got response : " + responseBuffer )
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break
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print( "Sending checksum to unirom..." );
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ser.write( bytesChk )
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time.sleep( 1 )
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# Wait for "MORE"
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while True:
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if ser.in_waiting:
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print(".")
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responseBuffer += ser.read().decode('ascii')
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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 responseBuffer == "MORE":
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print( "Got response : " + responseBuffer )
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break
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print( str(i+1) + "chunk sent with correct checksum.")
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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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