Test-button works but macro stalls

Hello!

I'm currently working on what should be a pretty simple macro, and it seems very close to functioning (the test-button works!), but the macro is locking up when I run it, and I would appreciate any insight that could help me get it running properly.

A few basics:
- The function of the macro is to send a short string (a "serial number") to a printer over the serial port (using luars232).
- The serial number is a string of characters that are placed in the first line of my g-code. The macro grabs it and sends it over serial.
- I have made a test-button that successfully sends the short string to the printer using a "write" command.
- When I put the "write" command from the button into the macro, the macro locks up when I try to run it.
- The macro includes commands to stop cycle, sleep 1s, write the string, sleep 1s, set the next line, and start the cycle.
- The macro runs fine when I comment out the write command.

For reference, here is the code I'm currently using:

luars232 setup - This is installed near the top of my load-screen script and appears to be working great. I adjusted the port name and baud rate to match my setup, but otherwise this is exactly as shared by mcardoso.

Code: [Select]

rs232 = require("luars232")
port_name = "COM3"
local out = io.stderr

---------------------------------------------------------------
-- Initialize Communications --
---------------------------------------------------------------

--Open Serial Port 8N1 115200 baud
local e, p = rs232.open(port_name)
if e ~= rs232.RS232_ERR_NOERROR then
	mc.mcCntlSetLastError(inst, "Cannot Open Serial Port")
	return
end

-- set port settings
assert(p:set_baud_rate(rs232.RS232_BAUD_115200) == rs232.RS232_ERR_NOERROR)
assert(p:set_data_bits(rs232.RS232_DATA_8) == rs232.RS232_ERR_NOERROR)
assert(p:set_parity(rs232.RS232_PARITY_NONE) == rs232.RS232_ERR_NOERROR)
assert(p:set_stop_bits(rs232.RS232_STOP_1) == rs232.RS232_ERR_NOERROR)
assert(p:set_flow_control(rs232.RS232_FLOW_OFF)  == rs232.RS232_ERR_NOERROR)

Test-button code - This works just fine. I load up my gcode, click the button, and the button grabs the serial number and sends to my printer just fine.

Code: [Select]

local inst = mc.mcGetInstance()

	local LabelParen = mc.mcCntlGetGcodeLine (inst, 0) 
	     --gets name of next Gcode file MUST BE COMMENTED INTO LINE 0 OF GCODE
	
	local Label = string.gsub(LabelParen, "[()%c%s]", "") --strips parentheses and hidden characters

p:write("\02\00\u{01B}\u{050}\u{001}\u{070}\u{017}"..Label, 5) --writes the label to serial port

Macro code "M104" - This seems to be where my problem is. When I run the macro it stalls out, and does not send any information to the serial port. However, if I comment out the write command, the macro runs just fine.

Code: [Select]

function M104 ()
	
    local inst = mc.mcGetInstance()
	
	mc.mcCntlCycleStop(inst)

	wx.wxSleep(1)
	
	local LabelParen = mc.mcCntlGetGcodeLine (inst, 0) 
	     --grabs the label from gcode. MUST BE COMMENTED INTO LINE 0 OF GCODE
	
	local Label = string.gsub(LabelParen, "[()%c%s]", "") --strips parentheses and hidden characters

    p:write("\02\00\u{01B}\u{050}\u{001}\u{070}\u{017}"..Label, 5) --writes the label to serial port. MACRO WORKS IF THIS LINE IS COMMENTED OUT

	wx.wxSleep(1)
	
	local LineNum, rc = (mc.mcCntlGetGcodeLineNbr(inst) + 1) --look up current line number and add 1

	mc.mcCntlSetGcodeLineNbr(inst,LineNum) --set next line number
 	 	
	mc.mcCntlCycleStart(inst) --start the cycle!
 
end

Sample G-code - Here's an example of the G-code I'm running. The first line is the serial number that will be sent to the printer by macro M104.

Code: [Select]

(#0001-06__A0-00__19.32")
M104
G00
S15000
F100
X0 Y2.8125
G01
X-9.6596 Y2.8006
X-14.4894 Y2.7788
X-19.319 Y2.7404
X-19.396 Y2.7561
X-19.4597 Y2.8019
X-19.4992 Y2.8698
X-19.5073 Y2.9479
X-19.4827 Y3.0225
X-19.4297 Y3.0805
X-19.3576 Y3.1117
G00
X0.6424 Y7.1117

Does anyone have any thoughts as to why the write command works just fine when run from the test-button, but not in the macro? I'm hoping it's just me missing something simple, and not opening a big can of worms.

Thanks in advance for your thoughts and assistance.
Also, I need to mention that I would have had no idea where to start on this project if it weren't for a number of extremely helpful comments from user mcardoso regarding setup and use of luars232 in this post.
https://www.machsupport.com/forum/index.php?topic=30553.0

Author Topic: Test-button works but macro stalls - using luars232 (Read 153 times)

hankb

Test-button works but macro stalls - using luars232