142 lines
3.0 KiB
Python
142 lines
3.0 KiB
Python
#!/usr/bin/env python
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import serial
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import array
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#=========================================================
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PORT = '/dev/ttyUSB1'
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FILE = 'build/ch.bin'
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RAM_ADDR = 0x10000300
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PAGE_SIZE = 0x40
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SECTOR_SIZE = 0x400
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FLASH_SIZE = 0x4000
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#=========================================================
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ser = serial.Serial( PORT, 115200, timeout=1)
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data = array.array('B')
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f = file( FILE, 'rb')
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try:
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data.fromfile(f, FLASH_SIZE)
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except:
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pass
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f.close()
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## pad out to next whole page
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data.fromstring( chr(0xff)*(PAGE_SIZE - (data.buffer_info()[1]%PAGE_SIZE)) )
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#=========================================================
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## fix-up LPC boot checksum
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csum = 0;
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for i in range(7):
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csum = csum + \
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(data[(i*4)] ) + \
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(data[(i*4)+1]<<8 ) + \
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(data[(i*4)+2]<<16) + \
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(data[(i*4)+3]<<24); \
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csum = -csum
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data[28] = csum & 0xff
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data[29] = csum>>8 & 0xff
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data[30] = csum>>16 & 0xff
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data[31] = csum>>24 & 0xff
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#=========================================================
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##
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ser.write('?')
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resp = ser.readline()
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if resp.strip() <> 'Synchronized':
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print 'No Response "?"'
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exit(1)
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ser.write('Synchronized\r\n')
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resp = ser.readline()
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resp = ser.readline()
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if resp.strip() <> 'OK':
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print 'Not Synchronized'
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exit(1)
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ser.write('12000\r\n')
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resp = ser.readline()
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resp = ser.readline()
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if resp.strip() <> 'OK':
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print 'No Response "12000"'
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exit(1)
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ser.write('A 0\r\n')
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resp = ser.readline()
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "A"', resp
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exit(1)
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ser.write('J\r\n')
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "J"', resp
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exit(1)
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resp = ser.readline()
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print 'Device ID: ', hex(int(resp))
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ser.write('U 23130\r\n')
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "U"', resp
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exit(1)
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## Erase whole device
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ser.write('P 0 7\r\n')
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "P"', resp
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exit(1)
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ser.write('E 0 7\r\n')
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "P"', resp
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exit(1)
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#=========================================================
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address = 0
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while data.buffer_info()[1]:
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ser.write( "W %d %d\r\n"%(RAM_ADDR, PAGE_SIZE) )
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "W"', resp
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exit(1)
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for i in range(PAGE_SIZE):
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ser.write( chr(data.pop(0)) )
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#print('P %x %x\r\n'%( address/SECTOR_SIZE, address/SECTOR_SIZE ))
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#print('C %x %x 0xff\r\n'%( address, RAM_ADDR ))
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## Program page
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ser.write('P %d %d\r\n'%( address/SECTOR_SIZE, address/SECTOR_SIZE ))
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "P"', resp
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exit(1)
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ser.write( 'C %d %d %d\r\n'%(address, RAM_ADDR, PAGE_SIZE) )
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resp = ser.readline()
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if resp.strip() <> '0':
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print 'Error Response "C"', resp
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exit(1)
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print '.',
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address = address + PAGE_SIZE
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if (address%SECTOR_SIZE) == 0:
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print ''
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#=========================================================
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#=========================================================
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