Matrix Orbital Corp

I am using a Microchip PIC 18F4610 with a Sipex RS-232 level shifter.

I created code using the PIC BasicPro IDE. I went through the turoial on interfacing a Basic Stamp to a Matrix Orbital display. Is it possible to use the HSEROUT command instead of the SEROUT command? The reason I ask is because, the SEROUT command only allows for bauds up to 9600, while the HSEROUT can communicate at 19200. The HSEROUT command uses the PIC's hardware UART.

I tested the HEX strings from the PIC (using a RS-232 spy tool), and was receiving proper commands to clear the screen and display data. I also tested the display using the "Display Tuner" GUI and made sure it was set at 19200.

Also, I noticed that in the turoial, that you created seperate SEROUT command for each byte.
'SEROUT 1, 84, [254] 'Command Prefix
'SEROUT 1, 84, [88] 'Clear screen command
Does it not work if you put the bytes back to back?
'SEROUT 1, 84, [254,88] 'Clear screen command

THX
[/i][/b]

Hello Gregory,

Thanks for your post.

I do not have a PIC BasicPro to try things out, unfortunately. I suggest that you check out the definition of SEROUT and see if it can only do one byte at a time, and at what speeds.

Also, with a scope, I suggest that you look at the RX line of the display and see that the display is getting the data you are sending it.

Thanks,

Gregory,

I've had success using SEROUT2 (sec. 5.74) with PicBasic.

Has a lot of functions, can accept entire command line at once, with
serial rates up to 19,200 baud.

I send in decimal format, with success, using Max232 to interface
with default MO display setup. (no modifications, or jumpers
to deal with.)

Clearing display then goes like this:

SEROUT2 datapin, 32, 10, [254,88]

where: 32 defines baud 19.2 and 10 is for a 10 mSec, delay between
characters, since I am not using hardware flow control. This last is arbitrary, and could likely be shorter. Have yet to tweak it.

Hope this helps.