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#604 start of total rework of redstone RTUs for relay functionalitiy

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This commit is contained in:
Mikayla Fischler
2025-04-21 22:18:09 -04:00
parent 48ec973695
commit 0d7302dc8e
6 changed files with 87 additions and 53 deletions
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46
rtu/modbus.lua
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@@ -399,43 +399,41 @@ function modbus.new(rtu_dev, use_parallel_read)
return public
end
-- create an error reply
---@nodiscard
---@param packet modbus_frame MODBUS packet frame
---@param code MODBUS_EXCODE exception code
---@return modbus_packet reply
local function excode_reply(packet, code)
-- reply back with error flag and exception code
local reply = comms.modbus_packet()
local fcode = bit.bor(packet.func_code, MODBUS_FCODE.ERROR_FLAG)
reply.make(packet.txn_id, packet.unit_id, fcode, { code })
return reply
end
-- return a SERVER_DEVICE_FAIL error reply
---@nodiscard
---@param packet modbus_frame MODBUS packet frame
---@return modbus_packet reply
function modbus.reply__srv_device_fail(packet) return excode_reply(packet, MODBUS_EXCODE.SERVER_DEVICE_FAIL) end
-- return a SERVER_DEVICE_BUSY error reply
---@nodiscard
---@param packet modbus_frame MODBUS packet frame
---@return modbus_packet reply
function modbus.reply__srv_device_busy(packet)
-- reply back with error flag and exception code
local reply = comms.modbus_packet()
local fcode = bit.bor(packet.func_code, MODBUS_FCODE.ERROR_FLAG)
local data = { MODBUS_EXCODE.SERVER_DEVICE_BUSY }
reply.make(packet.txn_id, packet.unit_id, fcode, data)
return reply
end
function modbus.reply__srv_device_busy(packet) return excode_reply(packet, MODBUS_EXCODE.SERVER_DEVICE_BUSY) end
-- return a NEG_ACKNOWLEDGE error reply
---@nodiscard
---@param packet modbus_frame MODBUS packet frame
---@return modbus_packet reply
function modbus.reply__neg_ack(packet)
-- reply back with error flag and exception code
local reply = comms.modbus_packet()
local fcode = bit.bor(packet.func_code, MODBUS_FCODE.ERROR_FLAG)
local data = { MODBUS_EXCODE.NEG_ACKNOWLEDGE }
reply.make(packet.txn_id, packet.unit_id, fcode, data)
return reply
end
function modbus.reply__neg_ack(packet) return excode_reply(packet, MODBUS_EXCODE.NEG_ACKNOWLEDGE) end
-- return a GATEWAY_PATH_UNAVAILABLE error reply
---@nodiscard
---@param packet modbus_frame MODBUS packet frame
---@return modbus_packet reply
function modbus.reply__gw_unavailable(packet)
-- reply back with error flag and exception code
local reply = comms.modbus_packet()
local fcode = bit.bor(packet.func_code, MODBUS_FCODE.ERROR_FLAG)
local data = { MODBUS_EXCODE.GATEWAY_PATH_UNAVAILABLE }
reply.make(packet.txn_id, packet.unit_id, fcode, data)
return reply
end
function modbus.reply__gw_unavailable(packet) return excode_reply(packet, MODBUS_EXCODE.GATEWAY_PATH_UNAVAILABLE) end
return modbus