wdmagic
- 20th April 2013, 23:46
Using a 18F4550 with internal default OSC. I started by using Darrel's INTs using the blinking LED program (http://www.darreltaylor.com/DT_INTS-14/blinky.html)that worked, changing
T1CON = $31 was about 2 seconds between blinks so I tried
$01 that set it to about 2hz
$11 set it to about 1hz
$00 did nothing nor did $31, $10, $20
now on his Timer template page (http://www.darreltaylor.com/DT_INTS-14/TimerTemplate.html)he has T1CON's listed as whole numbers 00, 10, 20, 30. I tryed these and program compiled but didnt run. This could be from me not specifying frequency, prescaler etc.. Im happy with the results so far, and right now I am just going to be using either 1 timer or 1 INT and 1 timer. I currently dont have to set it to run at a particular frequency so Im not studying that timer template page so much as the led blinky page and the Hello world page (http://www.darreltaylor.com/DT_INTS-14/hello.html). I would like to know where to find a listing where the $31 came from? is there a chart or a rule for generating this number?
Ive created a new file to test my EEPROM animations and it works great, what it does is store 64 Custom characters (8 Characters x 8 Frames) and it load them to CGRAM on the LCD and animate them, it allows for 8 Animated characters on the screen at the same time! What I am going to post is the primer on this, anyone should be able to expand it however they want, i will only be using a Single animated character with 7 frames to keep it simple.
This Program will place a animated battery being charged whereever you want to place the 0 Character in CGRAM "LCDOUT 0"
Include "LCD_D.bas" ' Defines for LCD using PORTD
INCLUDE "ADC_Default.bas" ' Defines for the ADC System
INCLUDE "DT_INTS-14.bas" ' Base Interrupt System
INCLUDE "ReEnterPBP.bas" ' Include if using PBP interrupts
EEPROM 0,[14,17,17,17,17,17,17,31] ' Cust Char #0
EEPROM 8,[14,17,17,17,17,17,31,31] ' Cust Char #1
EEPROM 16,[14,17,17,17,17,31,31,31] ' Cust Char #2
EEPROM 24,[14,17,17,17,31,31,31,31] ' Cust Char #3
EEPROM 32,[14,17,17,31,31,31,31,31] ' Cust Char #4
EEPROM 40,[14,17,31,31,31,31,31,31] ' Cust Char #5
EEPROM 48,[14,31,31,31,31,31,31,31] ' Cust Char #6
CGLOAD VAR WORD : CGLOAD = 0 ' Variable for holding Character # to Load
CGLLOC VAR BYTE : CGLLOC = 0 ' LCD Location to Store Character (0 to 7)
CGLOOP VAR BYTE ' Variable for Selecting Data Bits
CGDATA VAR BYTE ' Variable to Hold Character Data
Position Var WORD : Position = 0' Animation Frame
LCDOUT $FE, 2
Pause 1000
ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TMR1_INT, _Animation1, PBP, yes
endm
INT_CREATE ; Creates the interrupt processor
ENDASM
T1CON = $11 ; 01=.5s, 11=1s
@ INT_ENABLE TMR1_INT ; enable Timer 1 interrupts
Main:
LCDOUT 0
PAUSE 500
GOTO Main
'---[TMR1 - interrupt handler]--------------------------------------------------
Animation1:
CGLOAD = Position * 8 ' Converts your Character Selection to EEPROM Address
CGLLOC = 64 ' Converts LCD Slot to LCD Memory Address
LCDOUT $FE, CGLLOC
FOR CGLOOP = CGLOAD to (CGLOAD + 7) 'Sets 1st Memory Address to Read + Next 7
read CGLOOP, CGDATA ' Retrieve byte from EEPROM
LCDOUT CGDATA
next CGLOOP
position = position + 1
if position > 6 then position = 0
@ INT_RETURN
With some basic modifications you should be able to add up to 8 animated characters that are animated even if not being displayed onscreen. this is just an example program to simulate a battery charging icon on a LCD. feel free to let me know if you see something that can be shortened and if you can solve any of my questions at the top.
T1CON = $31 was about 2 seconds between blinks so I tried
$01 that set it to about 2hz
$11 set it to about 1hz
$00 did nothing nor did $31, $10, $20
now on his Timer template page (http://www.darreltaylor.com/DT_INTS-14/TimerTemplate.html)he has T1CON's listed as whole numbers 00, 10, 20, 30. I tryed these and program compiled but didnt run. This could be from me not specifying frequency, prescaler etc.. Im happy with the results so far, and right now I am just going to be using either 1 timer or 1 INT and 1 timer. I currently dont have to set it to run at a particular frequency so Im not studying that timer template page so much as the led blinky page and the Hello world page (http://www.darreltaylor.com/DT_INTS-14/hello.html). I would like to know where to find a listing where the $31 came from? is there a chart or a rule for generating this number?
Ive created a new file to test my EEPROM animations and it works great, what it does is store 64 Custom characters (8 Characters x 8 Frames) and it load them to CGRAM on the LCD and animate them, it allows for 8 Animated characters on the screen at the same time! What I am going to post is the primer on this, anyone should be able to expand it however they want, i will only be using a Single animated character with 7 frames to keep it simple.
This Program will place a animated battery being charged whereever you want to place the 0 Character in CGRAM "LCDOUT 0"
Include "LCD_D.bas" ' Defines for LCD using PORTD
INCLUDE "ADC_Default.bas" ' Defines for the ADC System
INCLUDE "DT_INTS-14.bas" ' Base Interrupt System
INCLUDE "ReEnterPBP.bas" ' Include if using PBP interrupts
EEPROM 0,[14,17,17,17,17,17,17,31] ' Cust Char #0
EEPROM 8,[14,17,17,17,17,17,31,31] ' Cust Char #1
EEPROM 16,[14,17,17,17,17,31,31,31] ' Cust Char #2
EEPROM 24,[14,17,17,17,31,31,31,31] ' Cust Char #3
EEPROM 32,[14,17,17,31,31,31,31,31] ' Cust Char #4
EEPROM 40,[14,17,31,31,31,31,31,31] ' Cust Char #5
EEPROM 48,[14,31,31,31,31,31,31,31] ' Cust Char #6
CGLOAD VAR WORD : CGLOAD = 0 ' Variable for holding Character # to Load
CGLLOC VAR BYTE : CGLLOC = 0 ' LCD Location to Store Character (0 to 7)
CGLOOP VAR BYTE ' Variable for Selecting Data Bits
CGDATA VAR BYTE ' Variable to Hold Character Data
Position Var WORD : Position = 0' Animation Frame
LCDOUT $FE, 2
Pause 1000
ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TMR1_INT, _Animation1, PBP, yes
endm
INT_CREATE ; Creates the interrupt processor
ENDASM
T1CON = $11 ; 01=.5s, 11=1s
@ INT_ENABLE TMR1_INT ; enable Timer 1 interrupts
Main:
LCDOUT 0
PAUSE 500
GOTO Main
'---[TMR1 - interrupt handler]--------------------------------------------------
Animation1:
CGLOAD = Position * 8 ' Converts your Character Selection to EEPROM Address
CGLLOC = 64 ' Converts LCD Slot to LCD Memory Address
LCDOUT $FE, CGLLOC
FOR CGLOOP = CGLOAD to (CGLOAD + 7) 'Sets 1st Memory Address to Read + Next 7
read CGLOOP, CGDATA ' Retrieve byte from EEPROM
LCDOUT CGDATA
next CGLOOP
position = position + 1
if position > 6 then position = 0
@ INT_RETURN
With some basic modifications you should be able to add up to 8 animated characters that are animated even if not being displayed onscreen. this is just an example program to simulate a battery charging icon on a LCD. feel free to let me know if you see something that can be shortened and if you can solve any of my questions at the top.