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