def SPI_SRAM_23K256_Init(ftdic):
# Write Status byte to disable HOLD function
cmd = [ftdi.SET_BITS_LOW, 0x00, 0x0B, 0x34, 0x01, 0x00, 0x01, 0x01, ftdi.SET_BITS_LOW, 0x08, 0x0B]
cmdstring = ""
cmdstringview = ""
for i in range(len(cmd)):
cmdstring += chr(cmd[i])
cmdstringview += '0x%02X,' % (cmd[i])
ret = ftdi.write_data( ftdic, cmdstring, len(cmdstring) )
if (DEBUG_LEVEL > 1):
print "\nSending:", cmdstringview, "ret=", ret
# Read Status bytes
cmd = [ftdi.SET_BITS_LOW, 0x00, 0x0B, 0x34, 0x01, 0x00, 0x05, 0xFF, ftdi.SET_BITS_LOW, 0x08, 0x0B]
cmdstring = ""
cmdstringview = ""
for i in range(len(cmd)):
cmdstring += chr(cmd[i])
cmdstringview += '0x%02X,' % (cmd[i])
ret = ftdi.write_data( ftdic, cmdstring, len(cmdstring) )
if (DEBUG_LEVEL > 1):
print "\nSending:", cmdstringview, "ret=", ret, "\n"
ret, data = ftdi.read_data(ftdic, 4)
st = ""
for i in range(ret):
st += '0x%02X,' % ord(data[i])
if (DEBUG_LEVEL > 0):
print "Status Byte = 0x%02X" % ord(data[3]), "\n"
def SPI_SRAM_23K256_Init(ftdic):
# Write Status byte to disable HOLD function
cmd = [
ftdi.SET_BITS_LOW, 0x00, 0x0B, 0x34, 0x01, 0x00, 0x01, 0x01,
ftdi.SET_BITS_LOW, 0x08, 0x0B
]
cmdstring = ""
cmdstringview = ""
for i in range(len(cmd)):
cmdstring += chr(cmd[i])
cmdstringview += '0x%02X,' % (cmd[i])
ret = ftdi.write_data(ftdic, cmdstring, len(cmdstring))
if (DEBUG_LEVEL > 1):
print "\nSending:", cmdstringview, "ret=", ret
# Read Status bytes
cmd = [
ftdi.SET_BITS_LOW, 0x00, 0x0B, 0x34, 0x01, 0x00, 0x05, 0xFF,
ftdi.SET_BITS_LOW, 0x08, 0x0B
]
cmdstring = ""
cmdstringview = ""
for i in range(len(cmd)):
cmdstring += chr(cmd[i])
cmdstringview += '0x%02X,' % (cmd[i])
ret = ftdi.write_data(ftdic, cmdstring, len(cmdstring))
if (DEBUG_LEVEL > 1):
print "\nSending:", cmdstringview, "ret=", ret, "\n"
ret, data = ftdi.read_data(ftdic, 4)
st = ""
for i in range(ret):
st += '0x%02X,' % ord(data[i])
if (DEBUG_LEVEL > 0):
print "Status Byte = 0x%02X" % ord(data[3]), "\n"
def SPI_SRAM_23K256_Read_Byte(ftdic, address):
cmd = [
ftdi.SET_BITS_LOW, 0x00, 0x0B, 0x34, 0x03, 0x00, 0x03,
int(0x00FF & (address >> 8)),
int(0x00FF & address), 0xFF, ftdi.SET_BITS_LOW, 0x08, 0x0B
]
cmdstring = ""
cmdstringview = ""
for i in range(len(cmd)):
cmdstring += chr(cmd[i])
cmdstringview += '0x%02X,' % (cmd[i])
ret = ftdi.write_data(ftdic, cmdstring, len(cmdstring))
if (DEBUG_LEVEL > 1):
print "\nSending:", cmdstringview, "ret=", ret, "\n"
ret, data = ftdi.read_data(ftdic, 4)
if (DEBUG_LEVEL > 1):
st = ""
for i in range(ret):
st += '0x%02X,' % ord(data[i])
print "Received:", st, "ret=", ret, "\n"
if (DEBUG_LEVEL > 0):
print "Data at address 0x%04X" % address, "= 0x%02X" % ord(
data[3]), "\n"
return ord(data[3])
def __readOne(self):
""" read 1 char from usb
"""
err, buf = ftdi.read_data(globals.ftdi_context, 0x1)
if err < 0:
logging.error("Can't read data (%d, %s)" % (err, ftdi.get_error_string(globals.ftdi_context)))
self.close()
raise FtdiError("Can't read data (%d, %s)" % (err, ftdi.get_error_string(globals.ftdi_context)))
if err:
#c = unichr(ord(buf) % 0x80) # Clear bit 7
c = chr(ord(buf) & 0x07f)
return err, c
else:
return err, None
def SPI_SRAM_23K256_Write_Byte(ftdic, address, databyte):
cmd = [ftdi.SET_BITS_LOW, 0x00, 0x0B, 0x34, 0x03, 0x00, 0x02, int(0x00FF & (address >> 8)), int(0x00FF & address), int(databyte), ftdi.SET_BITS_LOW, 0x08, 0x0B]
cmdstring = ""
cmdstringview = ""
for i in range(len(cmd)):
cmdstring += chr(cmd[i])
cmdstringview += '0x%02X,' % (cmd[i])
ret = ftdi.write_data( ftdic, cmdstring, len(cmdstring) )
if (DEBUG_LEVEL > 1):
print "\nSending:", cmdstringview, "ret=", ret, "\n"
ret, data = ftdi.read_data(ftdic, 4)
if (DEBUG_LEVEL > 1):
st = ""
for i in range(ret):
st += '0x%02X,' % ord(data[i])
print "Received:", st, "ret=", ret, "\n"
if (DEBUG_LEVEL > 0):
print "Data written to address 0x%04X" % address, "= 0x%02X" % int(databyte), "\n"
