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third-party/libftdi/python/examples/complete.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""Python example program.
+
+Complete program to demonstrate the usage
+of the swig generated python wrapper
+
+You need to build and install the wrapper first"""
+
+import os
+import sys
+import ftdi1 as ftdi
+import time
+
+# version
+print ('version: %s\n' % ftdi.__version__)
+
+# initialize
+ftdic = ftdi.new()
+if ftdic == 0:
+    print('new failed: %d' % ret)
+    os._exit(1)
+
+# try to list ftdi devices 0x6010 or 0x6001
+ret, devlist = ftdi.usb_find_all(ftdic, 0x0403, 0x6010)
+if ret <= 0:
+    ret, devlist = ftdi.usb_find_all(ftdic, 0x0403, 0x6001)
+
+if ret < 0:
+    print('ftdi_usb_find_all failed: %d (%s)' %
+          (ret, ftdi.get_error_string(ftdic)))
+    os._exit(1)
+print('devices: %d' % ret)
+curnode = devlist
+i = 0
+while(curnode != None):
+    ret, manufacturer, description, serial = ftdi.usb_get_strings(
+        ftdic, curnode.dev)
+    if ret < 0:
+        print('ftdi_usb_get_strings failed: %d (%s)' %
+              (ret, ftdi.get_error_string(ftdic)))
+        os._exit(1)
+    print('#%d: manufacturer="%s" description="%s" serial="%s"\n' %
+          (i, manufacturer, description, serial))
+    curnode = curnode.next
+    i += 1
+
+# open usb
+ret = ftdi.usb_open(ftdic, 0x0403, 0x6001)
+if ret < 0:
+    print('unable to open ftdi device: %d (%s)' %
+          (ret, ftdi.get_error_string(ftdic)))
+    os._exit(1)
+
+
+# bitbang
+ret = ftdi.set_bitmode(ftdic, 0xff, ftdi.BITMODE_BITBANG)
+if ret < 0:
+    print('Cannot enable bitbang')
+    os._exit(1)
+print('turning everything on')
+ftdi.write_data(ftdic, chr(0xff), 1)
+time.sleep(1)
+print('turning everything off\n')
+ftdi.write_data(ftdic, chr(0x00), 1)
+time.sleep(1)
+for i in range(8):
+    val = 2 ** i
+    print('enabling bit #%d (0x%02x)' % (i, val))
+    ftdi.write_data(ftdic, chr(val), 1)
+    time.sleep(1)
+ftdi.disable_bitbang(ftdic)
+print('')
+
+
+# read pins
+ret, pins = ftdi.read_pins(ftdic)
+if (ret == 0):
+    if sys.version_info[0] < 3:  # python 2
+        pins = ord(pins)
+    else:
+        pins = pins[0]
+    print('pins: 0x%x' % pins)
+
+
+# read chip id
+ret, chipid = ftdi.read_chipid(ftdic)
+if (ret == 0):
+    print('chip id: %x\n' % chipid)
+
+
+# read eeprom
+eeprom_addr = 1
+ret, eeprom_val = ftdi.read_eeprom_location(ftdic, eeprom_addr)
+if (ret == 0):
+    print('eeprom @ %d: 0x%04x\n' % (eeprom_addr, eeprom_val))
+
+print('eeprom:')
+ret = ftdi.read_eeprom(ftdic)
+size = 128
+ret, eeprom = ftdi.get_eeprom_buf(ftdic, size)
+if (ret == 0):
+    for i in range(size):
+        octet = eeprom[i]
+        if sys.version_info[0] < 3:  # python 2
+            octet = ord(octet)
+        sys.stdout.write('%02x ' % octet)
+        if (i % 8 == 7):
+            print('')
+print('')
+
+# close usb
+ret = ftdi.usb_close(ftdic)
+if ret < 0:
+    print('unable to close ftdi device: %d (%s)' %
+          (ret, ftdi.get_error_string(ftdic)))
+    os._exit(1)
+
+print ('device closed')
+ftdi.free(ftdic)