TM1640 (16 digit display) with PicBAsic Pro, possible is? How?

[Sherbrook]

Display is ordered from www.fasttech.com. I have not ordered from them before so do not know what the service is like yet.
I have a PIC18F2550 with USB bootloader to try it on.

Phil

[jefrem]

Hi Phil,

I used this code on my test. When possible try this so.


'************************************************* ***************
'* Name : LKM1640.BAS *
'* Author : Sherbrook' *
'* Notice : Microcode loader and PicBasic assembler. *
'* : All Rights Reserved *
'* Date : 24/7/2013 *
'* Version : v 2.0 *
'* Notes : *
'* : *
'************************************************* ***************
CLEAR ; start with clearing the

DEFINE OSC 48
Define RESET_ORG 800h
DEFINE SHIFT_PAUSEUS 300
Include "modedefs.bas" ' Include shift modes


'DEFINE LOADER_USED 1
''DEFINE OSC 4
'DEFINE LCD_DREG PORTA
'DEFINE LCD_DBIT 4
'DEFINE LCD_RSREG PORTA
'DEFINE LCD_RSBIT 2
'DEFINE LCD_EREG PORTA
'DEFINE LCD_EBIT 3

'================================================= =======
LED1 var PORTA.5
'strobe var PORTA.4
SDA VAR PORTB.1
SCL VAR PORTB.0

TRISA=%00000000 ' Configura o PortA como Saida
TRISB=%00000000 ' Configura o PortB como Saida
TRISC=%00000000 ' Configura o PortC como Saida

INTCON2.7 = 1 ' Turn Pull Up Resitor (PORTB Only) 0=Enable/1=Desable
ADCON1 = %00001111 ' Sets all ports to digital 00001111
PORTA = %00000000 ' Turn off all PortA
PORTB = %00000000 ' Turn off all PortB
PORTC = %00000000 ' Turn off all PortC

'================================================= =======


'TRISC = %00000000
'TRISB = %00000001 ' LCD display / I/R input
'TRISA = %11000000 ' A.6 & A.7 Bootloader
'ADCON1 = %00000110 ' PortA all digital



fix_addr con $C0 ' Start address of 7 segs & LEDs '($C0 = %1100-0000 = address $00) - 192
auto_addr con $44 ' Address of auto-increment mode - 40/64/0100-0000 - 44/68/0100-0100
'read_mode con $42 ' Address to read switches - 42/66/0100-0010

char var byte ' LOOKUP offset for 7 seg code
disp_addr var byte ' Offset from display start address (ODD = LED, EVEN = 7seg)
data_io var byte ' Data IN / OUT
disp_brit var byte ' Display brightness
seg_val var byte ' Code to send to 7 seg displays LEDs 0 = OFF, 1 = RED, 2 = GREEN
bank var byte ' 0 = Left 7 segment, 2 = next segment ...... 14 = Right 7 segment
'sw1 var byte ' Byte 1 of switch read
'sw2 var byte ' Byte 2 of switch read
'sw3 var byte ' Byte 3 of switch read
'sw4 var byte ' Byte 4 of switch read
'switch var byte ' Switch pressed as binary number
counter var byte ' General counter
counter1 var byte

'high strobe 'strobe = 1 ' Set strobe pin high
high SDA ' Set data pin high
high SCL ' Set clock pin high
disp_brit = $8f ' Set minimum brightness (Max = $8F) - 88/136/1000-1000
bank = 0
DISP_ADDR = 0

'----------------------------------------------------------------
'lcdout $FE,1 ' Clear LCD
'pause 100
'lcdout $FE,$80,"Switch "

gosub BLINK_LED_START:
gosub clear_char: 'Clear 7 seg displays & LEDs
gosub display: 'Write Chars to 7 seg display

MAIN:


for DISP_ADDR = 0 to 16
gosub write_display 'Write to LEDs display
seg_val = seg_val + 1
if seg_val > 2 then seg_val = 0
next

'for counter1 = 0 to 50 'Pause for 1 sec
' pause 20
' gosub GET_SWITCH: 'Check switches
'next

toggle led1

goto MAIN

END
'----------------------------------------------------------------
DISPLAY:
gosub WRITE_MODE

DISP_ADDR = fix_addr 'bank + 0
char = 0 'Print "0"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 2
char = 1 'Print "1"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 4
char = 2 'Print "2"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 6
char = 3 'Print "3"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 8
char = 4 'Print "4"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 10
char = 5 'Print "5"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 12
char = 6 'Print "6"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 14
char = 7 'Print "7"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 16
char = 8 'Print "8"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 18
char = 9 'Print "9"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 20
char = 10 'Print "10"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 22
char = 11 'Print "11"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 24
char = 12 'Print "12"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 26
char = 13 'Print "13"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 28
char = 14 'Print "14"
gosub lookup_char
gosub write_display

DISP_ADDR = bank + 30
char = 15 'Print "15"
gosub lookup_char
gosub write_display

gosub display_brit 'Set Display brightness

return

'----------------------------------------------------------------
CLEAR_CHAR: 'Clear LEDs & 7 seg displays
gosub write_mode

'STROBE = 0
data_io = FIX_ADDR 'Set start address
gosub send_char

for counter = 1 to 16
data_io = 0 'Blank display
gosub send_char
next

'Strobe = 1

return

'----------------------------------------------------------------
'CLEAR_LEDS: 'Clear LEDs only
' gosub write_mode
'
' for DISP_ADDR = 1 to 15 step 2
' SEG_VAL = 0 'Turns LEDs OFF
' gosub write_display
' next
'
' gosub display_brit 'Set brightness
'
'return

'----------------------------------------------------------------
SEND_CHAR:
shiftout SDA,SCL,4,[data_io]'LSB first, CLOCK idle HIGH
return

'----------------------------------------------------------------
LOOKUP_CHAR:
' lookup char,[1,2,4,8,16,32,64,128],seg_val
' Turns on a different segment on each display
lookup char,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F,$77,$7C,$5 8,$5E,$79,$71,$0],SEG_VAL
'Value for 0,1,2,3,4,5,6,7,8,9,A,b,c,d,E,F,(Blank)
return

'----------------------------------------------------------------
DISPLAY_BRIT:
data_io = disp_brit
'STROBE = 0
gosub send_char

'STROBe = 1

return

'----------------------------------------------------------------
WRITE_DISPLAY:
data_io = FIX_ADDR + DISP_ADDR
'strobe = 0
gosub send_char
data_io = SEG_VAL
gosub send_char
'STROBE = 1
gosub display_brit

return

'----------------------------------------------------------------
WRITE_MODE:
DATA_IO = AUTO_ADDR
'strobe = 0
gosub send_char

'strobe = 1

return

'----------------------------------------------------------------
BLINK_LED_START:
high led1
pause 200

low led1
pause 100

high led1
pause 200

low led1
pause 100

high led1
pause 200

low led1
pause 100
return

'================================================= ================

[Normnet]

jefrem

It may make little difference but try removing the colons after the gosubs in the following lines:

 gosub BLINK_LED_START:
 gosub clear_char: 'Clear 7 seg displays & LEDs
 gosub display: 'Write Chars to 7 seg display

Norm

[jefrem]

Hi Norm, I will change this your tips and return.

[jefrem]

Hi Norm, I tried this new change but not worked.

Regards,

[AvionicsMaster1]

Just out of curiousity, what does this line do in your code?

Define RESET_ORG 800h

[jefrem]

Hi, This "Define RESET_ORG 800h" line is used for Microchip USB bootloader.

Regards,