138 lines
4.3 KiB
Python
138 lines
4.3 KiB
Python
# Prologic GPIB-LAN simulator
|
|
from datetime import datetime
|
|
import socket
|
|
|
|
NETFINDER_SERVER_PORT = 3040
|
|
|
|
NF_IDENTIFY = 0
|
|
NF_IDENTIFY_REPLY = 1
|
|
NF_ASSIGNMENT = 2
|
|
NF_ASSIGNMENT_REPLY = 3
|
|
NF_FLASH_ERASE = 4
|
|
NF_FLASH_ERASE_REPLY = 5
|
|
NF_BLOCK_SIZE = 6
|
|
NF_BLOCK_SIZE_REPLY = 7
|
|
NF_BLOCK_WRITE = 8
|
|
NF_BLOCK_WRITE_REPLY = 9
|
|
NF_VERIFY = 10
|
|
NF_VERIFY_REPLY = 11
|
|
NF_REBOOT = 12
|
|
NF_SET_ETHERNET_ADDRESS = 13
|
|
NF_SET_ETHERNET_ADDRESS_REPLY = 14
|
|
NF_TEST = 15
|
|
NF_TEST_REPLY = 16
|
|
|
|
NF_SUCCESS = 0
|
|
NF_CRC_MISMATCH = 1
|
|
NF_INVALID_MEMORY_TYPE = 2
|
|
NF_INVALID_SIZE = 3
|
|
NF_INVALID_IP_TYPE = 4
|
|
|
|
NF_MAGIC = 0x5A
|
|
|
|
NF_IP_DYNAMIC = 0
|
|
NF_IP_STATIC = 1
|
|
|
|
NF_ALERT_OK = 0x00
|
|
NF_ALERT_WARN = 0x01
|
|
NF_ALERT_ERROR = 0xFF
|
|
|
|
NF_MODE_BOOTLOADER = 0
|
|
NF_MODE_APPLICATION = 1
|
|
|
|
NF_MEMORY_FLASH = 0
|
|
NF_MEMORY_EEPROM = 1
|
|
|
|
NF_REBOOT_CALL_BOOTLOADER = 0
|
|
NF_REBOOT_RESET = 1
|
|
|
|
|
|
HEADER_FMT = "!2cH6s2x"
|
|
IDENTIFY_FMT = HEADER_FMT
|
|
IDENTIFY_REPLY_FMT = "!H6c4s4s4s4s4s4s32s"
|
|
ASSIGNMENT_FMT = "!3xc4s4s4s32x"
|
|
ASSIGNMENT_REPLY_FMT = "!c3x"
|
|
FLASH_ERASE_FMT = HEADER_FMT
|
|
FLASH_ERASE_REPLY_FMT = HEADER_FMT
|
|
BLOCK_SIZE_FMT = HEADER_FMT
|
|
BLOCK_SIZE_REPLY_FMT = "!H2x"
|
|
BLOCK_WRITE_FMT = "!cxHI"
|
|
BLOCK_WRITE_REPLY_FMT = "!c3x"
|
|
VERIFY_FMT = HEADER_FMT
|
|
VERIFY_REPLY_FMT = "!c3x"
|
|
REBOOT_FMT = "!c3x"
|
|
SET_ETHERNET_ADDRESS_FMT = "!6s2x"
|
|
SET_ETHERNET_ADDRESS_REPLY_FMT = HEADER_FMT
|
|
TEST_FMT = HEADER_FMT
|
|
TEST_REPLY_FMT = "!32s"
|
|
|
|
MAX_ATTEMPTS = 10
|
|
MAX_TIMEOUT = 0.5
|
|
|
|
|
|
class gpib_eth():
|
|
"""
|
|
Prologix GPIB Ethernet Simulator Version 1.0
|
|
Emulates HW Version 1.2; SW Version 1.6.6.0; BOOT Version ?;
|
|
"""
|
|
def __init__(self):
|
|
self.up_time = datetime.now()
|
|
self.ip_addr = bytes([192, 168, 0, 128])
|
|
self.mode = NF_MODE_APPLICATION # [BOOTLOADER, APPLICATION]
|
|
self.alert = NF_ALERT_OK
|
|
self.ip_type = NF_IP_DYNAMIC # [DYNAMIC, STATIC]
|
|
self.eth_addr = b'\xF0' * 6 # MAC address 6 bytes
|
|
self.ip_netmask = bytes([255, 255, 255, 0])
|
|
self.ip_gateway = bytes([192, 168, 0, 1])
|
|
self.app_version = bytes([1, 6, 6, 0])
|
|
self.bootloader_version = bytes([1, 0, 0, 0]) # ??
|
|
self.hw_version = bytes([1, 2, 0, 0])
|
|
self.name = "Virtual Prologic GPIB-Eth Device"# 32 char string
|
|
|
|
def identify(self, seq):
|
|
# packet header (HEADER_FMT):
|
|
# 1 byte - NF_MAGIC
|
|
# 1 byte - NF_IDENTIFY_REPLY
|
|
# 2 byte - seq (unsigned short)
|
|
# 6 byte - eth_addr
|
|
# 2 byte - 2x Null (pad bytes)
|
|
#
|
|
# identify body (IDENTIFY_REPLY_FMT):
|
|
# 1 byte - Uptime days
|
|
# 1 byte - Uptime hours
|
|
# 1 byte - Uptime minutes
|
|
# 1 byte - Uptime seconds
|
|
# 1 byte - self.mode
|
|
# 1 byte - self.alert
|
|
# 1 byte - self.ip_type
|
|
# 4 byte - self.ip_addr
|
|
# 4 byte - self.ip_gateway
|
|
# 4 byte - self.app_version
|
|
# 4 byte - self.boootloader_version
|
|
# 4 byte - self.hw_version
|
|
# 32 byte - self.name
|
|
pass # To Do
|
|
|
|
def send(self, msg):
|
|
"""
|
|
Send data (msg)
|
|
"""
|
|
|
|
def receive(self):
|
|
"""
|
|
Receive data (msg)
|
|
"""
|
|
# Identify Command (IDENTIFY_FMT):
|
|
# 1 byte - NF_MAGIC
|
|
# 1 byte - NF_IDENTIFY
|
|
# 2 byte - sequence ID (unsigned short)
|
|
# 6 byte - Eth addr ((b'\xFF' * 6) for broadcast)
|
|
# 2 byte - Null byte x2 (pad bytes) [EOM ?]
|
|
rcv_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
rcv_sock.bind(('<broadcast>', NETFINDER_SERVER_PORT))
|
|
msg = rcv_sock.recvfrom(1024)
|
|
return msg
|
|
|
|
|
|
|