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Title: Problem with Proton Basic and a 16x4 LCD Post by: Lumos on October 24, 2010, 08:27:33 08:27 Hello,
With commands "Print at 3,1 ..." and "Print at 4,1..." the text is written from the first position 3,4 and 4,4. Print at 1,1 and 2,1 is ok. (I use LCD_Lines 4, LCD_Interface 4) Who can help me? Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: Wizpic on October 24, 2010, 09:29:26 09:29 That's not much to go on
You need to give us a bit more info, like show some sample code, your set up for the lcd then we may be able to help you wizpic Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: bbarney on October 24, 2010, 12:14:27 12:14 Try inserting this line near the top of your code as it seem's to cure a lot of wierd lcd problems with certain chips
Declare FLASH_CAPABLE = FALSE Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: piappo on October 24, 2010, 12:49:37 12:49 try this:
Cls Print At 1, 1 , "" Print At 2, 1, "" Print At 3, 1 , "try" Print At 4, 1, "this" Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: Lumos on October 24, 2010, 06:58:00 18:58 hello, thanks for your help.
Declare FLASH_CAPABLE = FALSE -> did not work Print At 1, 1...4,1 -> did not work Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: pickit2 on October 24, 2010, 08:06:08 20:06 Lumos is your code a secret? or the pic chip you used? and of couse the chipset the LCD is using.
That's not much to go on You need to give us a bit more info, like show some sample code, your set up for the lcd then we may be able to help you wizpic Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: Wizpic on October 24, 2010, 08:53:52 20:53 Lumos is your code a secret? or the pic chip you used? and of couse the chipset the LCD is using. The code is there it's hiding just above the picture :D It's called RHandT.txt It must be hwo they have been uploaded wizpic Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: piappo on October 24, 2010, 09:05:53 21:05 change your code con this:
start: Print At 1,17,"Ta(",Dec2 Ta,") > Ti(",Dec2 Ti,")" Print At 2,17,"rHa(",Dec2 rHa,")< rHi(",Dec2 rHi,")" Line 3 is an extension of Line 1 and Line 4 is an extension of Line 2 if the display is 20x4: Print At 1,21,"Ta(",Dec2 Ta,") > Ti(",Dec2 Ti,")" Print At 2,21,"rHa(",Dec2 rHa,")< rHi(",Dec2 rHi,")" Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: pickit2 on October 24, 2010, 10:26:07 22:26 The problem is in your config 18Fxxx devices need Config start /and/end
and inculed the Declare Flash_Capable = FALSE plus there maybe another gotyou about the 16x4 line display, but I don't have my notes here at home. look at the post above, its something about the code. Code: Config_Start Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: bbarney on October 24, 2010, 10:30:07 22:30 you thinking
Declare LCD_Interface 8 or to slow the display down LCD_CommandUs = 2000 LCD_DataUs = 50 Or you thinking LCDOUT $FE, I know the LCDOUT $FE, worked one time in proton even though it's PBasicPro , but I think it was the problem Declare Flash_Capable = FALSE takes care of Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: TomJackson69 on October 24, 2010, 10:56:10 22:56 Here is some of my though.
Since your program is displayed then I would assumed your initialize OK. How about the address of the LCD defined in Proton? It could be the DELAY not long enough between display each char. Try to slow down a bit between display each char will help. I think there is a delay problem like bbarney has said, please FOCUS on that. However here is LCD addresses: Some 4x20 and 4x16 LCD have line address as: Line1 0x00 Line2 0x20 Line3 0x00 Line4 0x40 For Hitachi HD66712 controller the address: Line1 0x00 Line2 0x20 Line3 0x40 Line4 0x80 16 chars/line display address: Line 1 0x80 Line 2 0xC0 Line 3 0x90 Line 4 0xD0 20 chars/line display address: Line 1 0x80 Line 2 0xC0 Line 3 0x94 Line 4 0xD4 Tom Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: Parmin on October 24, 2010, 11:07:48 23:07 I agree with TomJackson69, check your LCD display data sheet to make sure the display address are done correctly.
Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: bbarney on October 25, 2010, 02:15:27 02:15 Lumos
try what piappo say's but just try putting 40 characters on line one and see if the other char show up on line 3 you really need to setup up the config to like pickit says as portb.3 doubles as a ccp pin if not set right and you have it as your enable pin and you should use TRISB %xxxxxxxxxx along with PORTB % xxxxxxxxx so you know every pin is set the way you hope It would really help if you posted a link to the displays datasheet one question does the display have 2 chips on it so 2 enable pins ? another thing is you have Quote Print Cls start: Print At 3,1,"Ta(",Dec2 Ta,") > Ti(",Dec2 Ti,")" Print At 4,1,"rHa(",Dec2 rHa,") < rHi(",Dec2 rHi,")" try putting the cls further down with a delay and you just need cls no need for the print Quote start: Cls DelayMS 500 Print At 3,1,"Ta(",Dec2 Ta,") > Ti(",Dec2 Ti,")" Print At 4,1,"rHa(",Dec2 rHa,") < rHi(",Dec2 rHi,")" Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: Lumos on October 25, 2010, 08:46:07 08:46 many, many thanks, piappo, it work ;D
Thanks also to the others for the quick help Title: Re: Problem with Proton Basic and a 16x4 LCD Post by: Ahmad_k on October 25, 2010, 05:39:44 17:39 Guys this is an old problem with proton using 16x4 LCD.
There was an error with "Print at 4,1" and "at 3,1" According to the help : $FE, $C0 Move cursor to beginning of second line $FE, $94 Move cursor to beginning of third line $FE, $D4 Move cursor to beginning of fourth line there was an error. this should be : $FE, $C0 Move cursor to beginning of second line $FE, $90 Move cursor to beginning of third line $FE, $D0 Move cursor to beginning of fourth line and this error is embedded in the compiler. so if you want to print at 4,1 just use the above command. ex : Print $FE,$D0,"Test String" |