LCD for RN1

[i-Bot]

Print should work OK. What is the exact problem ?

The CLS and Locate commands in RoboBasic will not work.

For CLS use:
PRINT &HFE,&H01 'Clear the Sparkfun SerLCD

For LOCATE use:
PRINT &HFE, &H80 ' Go to top left
or change the second character in accordance with the SerLCD manual

[jeffchifu]

Hi i-bot,
Thank you your information,I want to use (LOCATE 2,0) in SerLCD 2.5
I tried (PRINT &HFE,&H97) but it doesn't work.
Normally,I use(PRINT &HFE,&H80+)to set first line.
How can I save of setting baud rate 4800 in SerLCD2.5?
thank you!

[i-Bot]

When you say LOCATE 2,0 this is column 2 on the first row. That would be PRINT &HFE,&H82.
For LOCATE 0,1 you would have PRINT &HFE,&HC0

Check out the SerLCD data sheet if you have more than two lines.

The speed should be automatically saved to eeprom when changed. Though we have seen this as a problem on other displays. Mine saves to EEPROM fine. Did you build the SerLCD V2.5 from the code I sent, or s it bought ?
It is very strange if the same code gives different results.

[jeffchifu]

I bought SerLCD 2.5 from Sparkfun
I used below code to change baud rate to 4800 but cannot save setting in EEporm
Code:
' Change speed from 9600 to 4800
ETX 9600, &HFE
ETX 9600, &H01
ETX 9600, 57
ETX 9600, 54
ETX 9600, 48
ETX 9600, 48
ETX 9600, 45
ETX 9600, 62
ETX 9600, 124
ETX 9600, 12
DELAY 10
ETX 4800, 52
ETX 4800, 56
ETX 4800, 48
ETX 4800, 48


With the LCD on the ERX Pins to set 4800 or:
Code:
' Change speed from 4800 to 9600
ETX 4800, &HFE
ETX 4800, &H01
ETX 4800, 52
ETX 4800, 56
ETX 4800, 48
ETX 4800, 48
ETX 4800, 45
ETX 4800, 62
ETX 4800, 124
ETX 4800, 13
DELAY 10
ETX 9600, 57
ETX 9600, 54
ETX 9600, 48
ETX 9600, 48
thanks i-BOt

[i-Bot]

Does your V2.5 have a 16F688 or a 16F88 processor ?

Can you send a picture of the SerLCD board, so I can compare with mine.

Most people seem to have problems saving baud rate to EEPROM, but I don't. I feeling left out

Do other parameters save to EEPROM OK ? (splash screen for instance)

Sparkfun have been unhelpful so far, maybe we can shame them into resolving this.

[jeffchifu]

my serlcd v2.5 board
http://www.robofun.net/forum/viewthread ... e=4&extra=

[jeffchifu]

Hi i-bot,
I found V2.5 hex on sparkfun website.It's possible to change hex code then programming to PIC chip.
http://www.sparkfun.com/Code/serlcd_16F688_old.zip
thanks
jeff

[Gort]

Someone, I forgot who told me which LCD to buy for the Robonova-1. I think it was Tony from hitec. I just can not remember. It was at either the 1st Hitec cup or at Robogames.

[hassawfaa]

Hi, Guys

For Serial LCD (Sparkfun) I saw at the picture for version 2.5 that inside it 16F88 on the other hand with the datasheet for version 2.5 they used 16F688 I think there is a confusion.

What's the micro that used in it?

Is it 16F88 or 16F688?

Waiting your reply.

[hassawfaa]

Hi, again

I will appreciate any help.

[Gort]

Here is a link to the one I have.

http://www.sparkfun.com/commerce/produc ... cts_id=461

I hope that this helps?

[Gort]

I finally got my Sparkfun Serial LCD to work! I was able to meet and talk to I-Bot during Robogames and he was very helpful. It looks like the only way to get it to work is to reset your LCD port form 4800 baud to 9600 baud. To do this you need to upload I-Bot’s fixes to Robobasic 2.72. Below are the instructions that he sent me. I was able to upload I-Bot’s firmware fixes without any problems. I have also tested my Robonova and it is working without any issues.
It is here (I-Bot’s version of Robobasic 2.72):

http://robosavvy.com/Builders/i-Bot/c3024fi2c.zip

You will also need Roboflash which is here:
http://robosavvy.com/Builders/i-Bot/roboflash.zip to load the code.

If you ever want to go back to 2.5 use this code:
http://robosavvy.com/Builders/i-Bot/payload2.5.bin
Then you can use either Robobasic 2.5 or 2.72 (which will also update the firmware to 2.7 without my changes.

My firmware changes the LCD port speed and fixes the POKE command. It also has the faster I2C code. See examples here:
http://robosavvy.com/Builders/i-Bot/I2CC.zip
All you have to do is to download both the bootloader and the new firmware. Then start Roboflash and point it to I-Bot’s version of 2.72. Then click the download button. It is that easy.
Thanks, I-Bot

[Gort]

phpBB [media]

[engineer]

at least you got it to work.

[ozfiddler]

I've just been through this whole saga. I can confirm that the 4800 didn't "stick" on my Sparkfun serial LCD either. But I tried I-bot's firmware and it works a treat now, running at 9600.

Once again... THANKS I-BOT!