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#!/usr/bin/lua
--module(..., package.seeall);
local my_path = debug.getinfo(1, "S").source:match[[^@?(.*[\/])[^\/]-$]]
local bobot_device = require("bobot_device")
local bobot = require("bobot")
local NULL_BYTE = string.char(0x00)
local DEFAULT_PACKET_SIZE = 0x04
local GET_USER_MODULES_SIZE_COMMAND = string.char(0x05)
local GET_USER_MODULE_LINE_COMMAND = string.char(0x06)
local GET_HANDLER_SIZE_COMMAND = string.char(0x0A)
local GET_HANDLER_TYPE_COMMAND = string.char(0x0B)
local GET_LINES_RESPONSE_PACKET_SIZE = 5
local GET_LINE_RESPONSE_PACKET_SIZE = 12
local GET_HANDLER_TYPE_PACKET_SIZE = 5
local GET_HANDLER_RESPONSE_PACKET_SIZE = 5 --
local ADMIN_HANDLER_SEND_COMMAND = string.char(0x00)
local ADMIN_MODULE_IN_ENDPOINT = 0x01
local ADMIN_MODULE_OUT_ENDPOINT = 0x81
local GET_USER_MODULE_LINE_PACKET_SIZE = 0x05
local CLOSEALL_BASE_BOARD_COMMAND = string.char(0x07)
local CLOSEALL_BASE_BOARD_RESPONSE_PACKET_SIZE = 5
local TIMEOUT = 250 --ms
local MAX_RETRY = 5
local BaseBoard = {}
--executes s on the console and returns the output
local function run_shell (s)
local f = io.popen(s) -- runs command
local l = f:read("*a") -- read output of command
f:close()
return l
end
openable = {}
hotplug = {}
local function parse_drivers()
local driver_files=run_shell("sh -c 'ls "..my_path.."../drivers/*.lua 2> /dev/null'")
for filename in driver_files:gmatch('drivers%/(%S+)%.lua') do
--print ("Driver openable", filename)
openable[filename] = true
end
driver_files=run_shell("sh -c 'ls "..my_path.."../drivers/hotplug/*.lua 2> /dev/null'")
for filename in driver_files:gmatch('drivers%/hotplug%/(%S+)%.lua') do
--print ("Driver hotplug", filename)
hotplug[filename] = true
end
end
parse_drivers()
local function load_modules(bb)
local retry = 0
bb.modules = {}
local n_modules=bb:get_user_modules_size()
while n_modules == nil and retry < MAX_RETRY do
n_modules=bb:get_user_modules_size()
bobot.debugprint("u4b:the module list size returned a nil value, trying to recover...")
retry = retry+1
end
if not n_modules then return nil end
retry=0
bobot.debugprint ("Reading modules:", n_modules)
for i = 1, n_modules do
local modulename=bb:get_user_module_line(i)
while modulename == nil and retry < MAX_RETRY do
bobot.debugprint("u4b:the module returned a nil value, trying to recover...")
modulename=bb:get_handler_type(i)
retry = retry+1
end
if not modulename then return nil end
if openable[modulename] then
bb.modules[i]=modulename
local d = bobot_device:new({
module=modulename,
--name=module,
baseboard=bb,
hotplug=false,
in_endpoint=0x01, out_endpoint=0x01,
}) -- in_endpoint=0x01, out_endpoint=0x01})
bb.devices[d]=true
bb.devices[#bb.devices+1]=d
bb.modules[modulename]=d
elseif hotplug[modulename] then
bb.modules[i]=modulename
bb.modules[modulename]=true
bb.hotplug = true -- bb has a hotplug module
else
bobot.debugprint("Loading modules: missing driver for",modulename)
end
end
return true
end
local function load_module_handlers(bb)
local retry = 0
local n_module_handlers=bb:get_handler_size()
while n_module_handlers == nil and retry < MAX_RETRY do
n_module_handlers=bb:get_handler_size()
bobot.debugprint("u4b:the module handler list size returned a nil value, trying to recover...")
retry = retry+1
end
if (not n_module_handlers) or (n_module_handlers > 32) then return nil end
retry=0
bobot.debugprint ("Reading moduleshandlers:", n_module_handlers)
for i=1, n_module_handlers do
local t_handler = bb:get_handler_type(i)
while(t_handler == nil and retry < MAX_RETRY) do
bobot.debugprint("u4b:the module handler returned a nil value, trying to recover...")
t_handler = bb:get_handler_type(i)
retry = retry+1
end
if not t_handler then return nil end
if t_handler<255 then
local modulename=bb.modules[t_handler+1]
local moduledev=bb.modules[modulename]
if type(moduledev)=='table'
and not moduledev.handler then
moduledev.handler=i-1
elseif moduledev==true then
--name=name.."@"..(i-1)
local d = bobot_device:new({
handler=i-1,
module=modulename,
--name=name,
baseboard=bb,
hotplug=(hotplug[modulename]),
in_endpoint=0x01, out_endpoint=0x01,
}) -- in_endpoint=0x01, out_endpoint=0x01})
if d then
bb.devices[d]=true
bb.devices[#bb.devices+1]=d
end
else
bobot.debugprint ("No opened device!")
end
end
end
return true
end
function BaseBoard:refresh()
self.devices = {}
if not load_modules(self) then
return nil,"failure reading modules"
end
if not load_module_handlers(self) then
return nil,"failure reading module handlers"
end
return true
end
--Instantiates BaseBoard object.
--Loads list of modules installed on baseboard
function BaseBoard:new(bb)
--parameters sanity check
assert(type(bb)=="table")
assert(type(bb.comms)=="table")
--OO boilerplate
setmetatable(bb, self)
self.__index = self
bb:refresh()
--bobot.debugprint ('----------------')
--bb:force_close_all()
--bobot.debugprint ('================')
return bb
end
--Closes all modules opened on baseboard
function BaseBoard:close()
--state sanity check
assert(type(self.devices)=="table")
for _,d in ipairs(self.devices) do
if type(d.handler)=="number" then
bobot.debugprint ("closing", d.name, d.handler)
d:close()
end
end
--TODO actually close the baseboard
end
--returns number of modules present on baseboard
function BaseBoard:get_user_modules_size()
--state sanity check
assert(type(self.comms)=="table")
local comms=self.comms
-- In case of get_user_modules_size command is atended by admin module in handler 0 and send operation is 000
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. string.char(DEFAULT_PACKET_SIZE) .. NULL_BYTE
local admin_packet = GET_USER_MODULES_SIZE_COMMAND
local get_user_modules_size_packet = handler_packet .. admin_packet
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, get_user_modules_size_packet, TIMEOUT)
if write_res then
local data, err = comms.read(ADMIN_MODULE_OUT_ENDPOINT, GET_LINES_RESPONSE_PACKET_SIZE, TIMEOUT)
if not data then
bobot.debugprint("u4b:get_user_modules_size:comunication with I/O board read error", err)
return 0
else
local user_modules_size = string.byte(data, 5)
return user_modules_size
end
else
bobot.debugprint("u4b:get_user_modules_size:comunication with I/O board write error", write_res)
return 0
end
end
--returns thename of a given (by a 1-based index)module
function BaseBoard:get_user_module_line(index)
--state & parameter sanity check
assert(type(index)=="number")
assert(index>0)
assert(type(self.comms)=="table")
local comms=self.comms
-- In case of get_user_module_line command is atended by admin module in handler 0 and send operation is 000
local get_user_module_line_packet_length = string.char(GET_USER_MODULE_LINE_PACKET_SIZE)
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. get_user_module_line_packet_length .. NULL_BYTE
local admin_packet = GET_USER_MODULE_LINE_COMMAND .. string.char(index-1)
local get_user_module_line_packet = handler_packet .. admin_packet
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, get_user_module_line_packet, TIMEOUT)
if write_res then
local data, err = comms.read(ADMIN_MODULE_OUT_ENDPOINT, GET_LINE_RESPONSE_PACKET_SIZE, TIMEOUT)
if not data then
bobot.debugprint("u4b:get_user_modules_line:comunication with I/O board read error", err)
return
end
--the name is between a header and a null
local end_mark = string.find(data, "\000", GET_USER_MODULE_LINE_PACKET_SIZE, true)
if not end_mark then
bobot.debugprint ("u4b:get_user_module_line:Error parsing module name")
return
end
local module_name = string.sub(data, GET_USER_MODULE_LINE_PACKET_SIZE, end_mark-1)
return module_name
else
bobot.debugprint("u4b:get_user_module_line:comunication with I/O board write error", write_res)
end
end
function BaseBoard:get_handler_size() ------ NEW LISTI ------
--state sanity check
assert(type(self.comms)=="table")
local comms=self.comms
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. string.char(DEFAULT_PACKET_SIZE) .. NULL_BYTE
local admin_packet = GET_HANDLER_SIZE_COMMAND
local get_handler_size_packet = handler_packet .. admin_packet
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, get_handler_size_packet, TIMEOUT)
if write_res then
local data, err = comms.read(ADMIN_MODULE_OUT_ENDPOINT, GET_HANDLER_RESPONSE_PACKET_SIZE, TIMEOUT)
if not data then
bobot.debugprint("u4b:get_handler_size:comunication with I/O board read error", err)
return 0
else
local handler_size = string.byte(data, 5)
return handler_size
end
else
bobot.debugprint("u4b:get_handler_type:comunication with I/O board write error", write_res)
end
end
function BaseBoard:get_handler_type(index) ------ NEW LISTI ------
--state & parameter sanity check
assert(type(index)=="number")
assert(index>0)
assert(type(self.comms)=="table")
local comms=self.comms
-- In case of get_handler_type command is atended by admin module in handler 0 and send operation is 000
local get_handler_type_packet_length = string.char(GET_HANDLER_TYPE_PACKET_SIZE) --GET_USER_MODULE_LINE_PACKET_SIZE
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. get_handler_type_packet_length .. NULL_BYTE
local admin_packet = GET_HANDLER_TYPE_COMMAND .. string.char(index-1)
local get_handler_type_packet = handler_packet .. admin_packet
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, get_handler_type_packet, TIMEOUT)
if write_res then
local data, err = comms.read(ADMIN_MODULE_OUT_ENDPOINT, GET_HANDLER_RESPONSE_PACKET_SIZE, TIMEOUT)
if not data then
bobot.debugprint("u4b:get_handler_type:comunication with I/O board read error", err)
return 0
else
local handler_type = string.byte(data, 5)
return handler_type
end
else
bobot.debugprint("u4b:get_handler_type:comunication with I/O board write error", write_res)
end
end
-- resets the baseboard, after this operation the baseboard will claim reenumeration to the operative system
-- this function is deprecated by force_close_all
function BaseBoard:close_all()
for _,d in ipairs(self.devices) do
--bobot.debugprint ("===", d.name,d.handler)
if d.handler then d:close() end
end
end
-- switch the baseboard to the bootloader program implementend as a usb4all command to the admin module
function BaseBoard:switch_to_bootloader()
--state & parameter sanity check
assert(type(self.comms)=="table")
local comms=self.comms
-- In case of reset_base_board command is atended by admin module in handler 0 and send operation is 000
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. string.char(DEFAULT_PACKET_SIZE) .. NULL_BYTE
local admin_packet = string.char(0x09) --SWITCH_TO_BOOT_BASE_BOARD_COMMAND
local boot_base_board_packet = handler_packet .. admin_packet
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, boot_base_board_packet, TIMEOUT)
--from this moment the board is reseted, so there is nothing more to do
end
function BaseBoard:reset()
--state & parameter sanity check
assert(type(self.comms)=="table")
local comms=self.comms
-- In case of reset_base_board command is atended by admin module in handler 0 and send operation is 000
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. string.char(DEFAULT_PACKET_SIZE) .. NULL_BYTE
local admin_packet = string.char(0xFF) --RESET_BASE_BOARD_COMMAND
local reset_base_board_packet = handler_packet .. admin_packet
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, reset_base_board_packet, TIMEOUT)
if write_res then
-- no tego que leer respuesta porque se reseteo
--libusb.close(libusb_handler)
--self.libusb_handler=nil
--for d_name,d in pairs(self.devices) do
--bobot.debugprint ("===", d.name,d.handler)
-- d.handler=nil
--end
else
bobot.debugprint("u4b:reset:comunication with I/O board write error", write_res)
end
end
function BaseBoard:force_close_all()
--state & parameter sanity check
assert(type(self.comms)=="table")
local comms=self.comms
-- In case of reset_base_board command is atended by admin module in handler 0 and send operation is 000
local handler_packet = ADMIN_HANDLER_SEND_COMMAND .. string.char(DEFAULT_PACKET_SIZE) .. NULL_BYTE
local admin_packet = CLOSEALL_BASE_BOARD_COMMAND
local reset_base_board_packet = handler_packet .. admin_packet
--bobot.debugprint ('%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%')
local write_res = comms.send(ADMIN_MODULE_IN_ENDPOINT, reset_base_board_packet, TIMEOUT)
--bobot.debugprint ('%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%')
if write_res then
local data, err = comms.read(ADMIN_MODULE_OUT_ENDPOINT, CLOSEALL_BASE_BOARD_RESPONSE_PACKET_SIZE, TIMEOUT)
if err then
bobot.debugprint("u4b:force_close_all:comunication with I/O board read error",err)
else
--bobot.debugprint("u4b:force_close_all:libusb read",string.byte(data,1,string.len(data)))
end
for _,d in ipairs(self.devices) do
--bobot.debugprint ("===", d.name,d.handler)
d.handler=nil
end
else
bobot.debugprint("u4b:force_close_all:comunication with I/O board write error", write_res)
end
end
return BaseBoard
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