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Thanks for your replies,

I added 'DISABLE_INTS' to the stream definition, didn't seem to do much. I changed the command to a simple "HELLO" to see what would happen, and I didn't get the ...

Thanks PCM,

Unfortunately the HW UART is dedicated to sending/receiving the data buffer from the LCD touchscreen so using it is not an option. It seems like SW UART is the most attractive option h ...

I just realized that was for another serial command I was sending as a test. It's not going to match up with the ASCII for ?PRE\r, but it is the same idea. Still getting a 34 04 at the end which doe ...

Thanks Ttelmah,

I am aware that INT_EXT could hang if not receiving a carriage return, this is kind of what I was going for. The problem is, nothing is being sent from the gauge as the indicator t ...

Anybody? Or am I just being thick and can't see the answer right in front of me, it wouldn't surprise me.

I forgot to mention the format of the pressure gauge's returned value. It is as follows:

[newline] 0.00, inH20\r

The carriage return at the end means fgets SHOULD work, but it is not eve ...

Hello again everyone,

I am sending the command "?PRE\r" via software UART to a digital pressure gauge, which is supposed to return the pressure from the gauge and display it on a touchscr ...

Ah I understand the confusion now, I have B7 jumped to B0, I apologize for not stating this earlier. I see what you mean about the falling edge, this is probably what is causing the fgetc() to only w ...

Thanks for the reply Ttelmah, I've been lurking on this forum for a while now so I know that I'm in good hands with you. enable_interrupts(GLOBAL) is now gone, I seem to remember thinking that solved ...

Good day all,

First post so be gentle. Firstly I am using a PIC18f452. What I'm trying to do is create a data logger for a digital pressure gauge. This gauge takes an ASCII command ?PRE+carriage ...