I have a PIC based device that has a "RS232" output. I am trying to have the Arduino get values from it, but am having extreme difficulty doing so.
I had the TX out connected to Arduino RX, RX out to Arduino TX, and ground to ground. Using simple code to echo back the values it got, to the serial monitor, gave me numbers, that did have a pattern, but don't really mean anything (not ASCII, hex etc)
I have been told that I needed to use a MAX232, and now being told I don't because it's between 2 TTL chips. I've also been told that I can't use pins 0 and 1 for 2 serial comms, so I tired to use the softwareserial library, but it just gives me a bunch of 0's and doesn't respond to any data.
Here is the circuits and how I have it currently wired:
I cannot modify the code on the PIC, but since it says it has RS232 output, then I am assuming it does and I don't need to worry about that.
The web server has fields on it's hosted page where you can enter serial strings without newlines, strings with newlines and character codes. What I am tyring to do, is just have anything sent to the Arduino via the web interface, make it to the Arduino exactly as it was sent, but I have yet been able to achieve this, mainly due to my lack of knowledge on serial! :(
So, long story short, how would I go about connecting these 2 devices together, to transfer serial data from the WIB to the Arduino.