Wiz107SR garbage data (RS232) {SOLVED}

Question

Hello Guys! On the picture bellow you can see the settings I have made on WIZ107SR in conf tool. The problem is that I am still getting Garbage data. I checked baud rates at least 5 times, but I didnt see anything wrong. Please help! Product WIZ107SR Configuration tool: 1.4.4.1 Firmware: 3_14. PC interface: Device terminal 1.0 [url]https://drive.google.com/file/d/0B_EYtdS7J5eKTk9SdW9uUGw1ajA/edit?usp=sharing[/url] Thank you in advance!

rikotech · Answer

Thank you for reply! The purpose I use it is exactly to debug my serial connection, hence I was able to see it doesnt work. Nonetheless I unchecked the debug message, afterward I sent/received a single character data trough Device Terminal Program 1.0 and I still get corrupted data.

rikotech · Answer

Thank you midnightcow! I tried what you suggested. The result was [quote]LGSEG:CONNECTED[/quote]. Ok, so the device seems to work well in “stand alone mode”. Then where am I wrong? I am pretty much sure it is on BAUD rate. Anyway, this is my test scheme: WIZ107SR<--->max3232<--->RS232_USB_converter<--->PC I am waiting for my oscilloscope to return from the service so I can determine tha actual BAUD rate. A question is if the WIZ107SR serial port is TTL or RS232? If the data being transmited is inverted or not? Dont get me wrong, I have read the datasheet, but I have no idea what might be wrong in this case.

irina · Answer

WIZ107SR was released ‘TTL’ and ‘RS-232’ version both. if you can find U2 ‘RS-232 transceiver’ (refer to WIZ107SR partlist) on your module, you have WIZ107SR RS-232 version and if not, it’s TTL version. (Please check your board revision first. before revision 1.1 was released RS-232 version only.) WIZ107SR RS-232 version is no need to use ‘TTL - RS-232 transceiver’ (like MAX3232). if you want to use DB-9 port, please connect the port directly on the module.

rikotech · Answer

Thank you so much Guys! if you can find U2 ‘RS-232 transceiver’ (refer to WIZ107SR partlist) on your module, you have WIZ107SR RS-232 version Yes it has! The problem was I put MAX3232 after the module which has already such. Now everything work perfect. Thank you again!