def get_version(handle):
"""This function reads the firmware version from the I2C-to-SWI Bridge."""
print "Get firmware version of Bridge"
res = write(handle, array('B', [0x04, 0x00, 0x03]))
if res <= 0:
return res
return read(handle, 5)
def set_wakeup_delay(handle, delay):
"""This function sets the SWI Wakeup delay (us)."""
delay %= 25500
print "Set the SWI Wakeup delay to %d us" % (delay)
res = write(handle, array('B', [0x01, 0x01, 0x00, delay / 100]))
if res <= 0:
return res
return read(handle, 2)
def set_swi_timeout(handle, timeout):
"""This function sets the SWI timeout (ms)."""
timeout %= 2550
print "Set the SWI timeout to %d ms" % (timeout)
res = write(handle, array('B', [0x03, 0x01, 0x00, timeout / 10]))
if res <= 0:
return res
return read(handle, 2)
def read_config(handle):
"""This functions reads data from the SHA204 configuration zone."""
print "Send Read command to SHA204 and receive its response"
res = write(
handle,
array('B',
[0x00, 0x07, 0x23, 0x07, 0x02, 0x80, 0x08, 0x00, 0x0A, 0x4D]))
if res <= 0:
return res
return read(handle, 37)
def dev_rev(handle):
"""This function sends a DevRev command to the SHA204 device and receives its response."""
print "Send DevRev command to SHA204 and receive its response"
res = write(
handle,
array('B',
[0x00, 0x07, 0x07, 0x07, 0x30, 0x00, 0x00, 0x00, 0x03, 0x5D]))
if res <= 0:
return res
return read(handle, 9)
def nonce(handle):
"""This function sends a Nonce command to the SHA204 device and receives its response."""
print "Send Nonce command to SHA204 and receive its response"
res = write(handle, array('B', [0x00, 0x1B, 0x23, \
0x1B, 0x16, 0x00, 0x00, 0x00, \
0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, \
0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, \
0x98, 0xC6]))
if res <= 0:
return res
return read(handle, 37)
def mac(handle):
"""This function sends a Mac command to the SHA204 device and receives its response."""
print "Send Mac command to SHA204 and receive its response"
res = write(handle, array('B', [0x00, 0x27, 0x23, \
0x27, 0x08, 0x00, 0x00, 0x00, \
0x3C, 0x37, 0x0E, 0x25, 0x98, 0x43, 0x8E, 0x6C, \
0xE9, 0x8A, 0x9B, 0x1E, 0xBD, 0xB3, 0x1E, 0x7D, \
0x8C, 0xBD, 0x38, 0xE3, 0x25, 0x06, 0xBB, 0x40, \
0x19, 0x68, 0x9C, 0x34, 0x49, 0x8B, 0x1A, 0x97, \
0x68, 0x1B]))
if res <= 0:
return res
return read(handle, 37)
def write_config(handle):
"""This functions writes data to the SHA204 configuration zone."""
print "Send Write command to SHA204 and receive its response"
res = write(handle, array('B', [0x00, 0x27, 0x04, \
0x27, 0x12, 0x80, 0x08, 0x00, \
0x86, 0x40, 0x87, 0x07, 0x0F, 0x00, 0x89, 0xF2, \
0x8A, 0x7A, 0x0B, 0x8B, 0x0C, 0x4C, 0xDD, 0x4D, \
0xC2, 0x42, 0xAF, 0x8F, 0xFF, 0x00, 0xFF, 0x00, \
0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, \
0x05, 0x2A]))
if res <= 0:
return res
return read(handle, 6)