esp32-evse
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dzurikmiroslav
Available switch vs. Emergency STOP
Setting the charger available switch to off will reset itself back to on almost immediately:
I (11:42:55.171) evse: Set available 0
I (11:42:55.202) evse: Enter F state
I (11:42:55.203) pilot: Set level 0
I (11:42:55.204) ac_relay: Set relay: 0
I (11:42:55.829) evse: Set available 1
I (11:42:55.882) evse: Enter A state
I (11:42:55.883) pilot: Set level 1
I (11:42:55.884) ac_relay: Set relay: 0
Seeing this behavior either triggered from web UI or through AT commands.
Not sure if it interferes or not with the emergency stop lua script:
local evse = require("evse")
local aux = require("aux")
local boardconfig = require("boardconfig")
function contains(table, value)
for _, v in ipairs(table) do
if v == value then
return true
end
end
return false
end
return {
id = "stopbutton",
name = "Stop button",
description = "Set charger not available when AUX input has targeted value",
params = {
aux = { type = "string", name = "Input name", default = "IN1" },
activehigh = { type = "boolean", name = "Active high", default = true }
},
start = function(params)
print("Starting stopbutton...")
if not contains(boardconfig.auxinputs, params.aux) then
error("Unknown aux input")
end
return coroutine.create(function()
while true do
local value = aux.read(params.aux)
-- print("Input read: ".. tostring(value))
if (not params.activehigh) then
value = not value
end
if not value ~= evse.getavailable() then
print("Stop button pressed: ".. tostring(value))
-- evse.setenabled(0)
evse.setavailable(not value)
end
coroutine.yield(1000)
end
end)
end
}
Hi @nagyrobi I have no similar issue. All on/off done manually via UI and LCD. But also I have no any LUA scripts.
I (19:45:30.831) evse: Set enabled 0
I (19:45:37.920) evse: Enter B1 state
I (19:45:37.920) ac_relay: Set relay: 0
I (19:45:37.921) socket_lock: Set locked 1
I (19:45:37.922) proximity: Max current: 20A
I (19:45:37.923) energy_meter: Start session
I (19:45:39.716) socket_lock: Lock OK
I (19:45:45.566) evse: Set enabled 1
I (19:45:45.660) evse: Enter B2 state
I (19:45:45.661) pilot: Set amp 195A*10 duty 323/1023
I (19:45:45.662) ac_relay: Set relay: 0
I (19:45:49.812) evse: Set enabled 0
I (19:45:49.902) evse: Enter B1 state
I (19:45:49.903) pilot: Set level 1
I (19:45:49.903) ac_relay: Set relay: 0
I (19:45:49.904) proximity: Max current: 20A
I (19:46:13.416) evse: Set enabled 1
I (19:46:13.460) evse: Enter B2 state
I (19:46:13.461) pilot: Set amp 195A*10 duty 323/1023
I (19:46:13.461) ac_relay: Set relay: 0
I (19:46:22.230) evse: Enter C2 state
I (19:46:22.231) ac_relay: Set relay: 1
I (19:46:28.812) evse: Set enabled 0
I (19:46:28.892) evse: Enter C1 state
I (19:46:28.893) pilot: Set level 1
W (19:46:34.950) evse: Force switch off ac relay
I (19:46:34.950) ac_relay: Set relay: 0
I (19:47:15.256) evse: Set enabled 1
I (19:47:15.300) evse: Enter C2 state
I (19:47:15.301) pilot: Set amp 195A*10 duty 323/1023
I (19:47:15.301) ac_relay: Set relay: 1
I (19:47:27.856) evse: Set enabled 0
I (19:47:27.940) evse: Enter C1 state
I (19:47:27.940) pilot: Set level 1
W (19:47:33.969) evse: Force switch off ac relay
I (19:47:33.970) ac_relay: Set relay: 0
I (19:47:42.380) evse: Enter A state
I (19:47:42.380) ac_relay: Set relay: 0
I (19:47:42.381) socket_lock: Set locked 0
I (19:47:42.382) energy_meter: Stop session
The stopbutton lua script is from: https://github.com/dzurikmiroslav/esp32-evse/wiki/Lua#complex-example is incorrect because it ties the Available switch solely to the emergency stop button, making use of it from Web UI or display impossible.
Corrected the stopbutton.lua script to this:
local evse = require("evse")
local aux = require("aux")
local boardconfig = require("boardconfig")
local stopped_by_button = false
function contains(table, value)
for _, v in ipairs(table) do
if v == value then
return true
end
end
return false
end
return {
id = "stopbutton",
name = "Emergency stop button",
description = "Set charger to not available when AUX input has targeted value",
params = {
aux = { type = "string", name = "Input name", default = "IN1" },
activehigh = { type = "boolean", name = "Active high", default = true }
},
start = function(params)
print("starting stopbutton...")
if not contains(boardconfig.auxinputs, params.aux) then
error("unknown aux input")
end
return coroutine.create(function()
while true do
local value = aux.read(params.aux)
-- print("Input read: ".. tostring(value))
if (not params.activehigh) then
value = not value
end
if not value ~= true then
if not evse.getavailable() == false then
evse.setavailable(false)
stopped_by_button = true
end
end
if not value ~= false then
if stopped_by_button == true then
evse.setavailable(true)
stopped_by_button = false
end
end
coroutine.yield(1000)
end
end)
end
}
This will comply with the following:
- the emergency button pressed, will turn off the Available switch on EVSE (connected between +12V and IN1)
- it will force the Available switch off as long as the button is pressed down
- after the emergency has been solved, the disengage of the button will turn back on the Available switch
- usage of the the Available switch through the display or the web UI can be independent from the emergency button as long as it's not pressed (eg. can be used to make it "out of order" etc.)
- if the Available switch was turned off through the display or the web UI, it's not possible to turn it back on by pressing and releasing the emergency button.
Use it with a single lined init.lua executor:
component.register(require("stopbutton"))