Anyone has any experience with HT1632C LED display drivers?

[aerostar]

Hi

Have a look here http://www.picbasic.co.uk/forum/showthread.php?t=11871

I played with Sure modules way back - late 2000s and used 2 modules to make a nice large clock and where the digits change by scrolling upwards with the new one scrolling in from the bottom.

It took a while to design the dot matrix data for the characters and for doing the vertical scroll.

But it all started from the above link.

I see the chip is EOL. But modules are still available on Ebay though not the Sure ones I used, but as the current Ebay modules use the same chip and control lines, the code should work.

I will have a look for my old early codes (not well documented!) and perhaps post one, it will be a few days !!

[CuriousOne]

Thanks!
Chip might be EOL, but it's clones are still widely made.
The main reason I want to use it, that I have some compact 8x8 led dot matrix modules (2mm dot pitch) and I want to make 32x8 array from them. If I use MAX7219, the IC itself is larger than the dot matrix module, so PCB tracing will be harder, and also it will occupy more space, so I decided to seek an alternative.

[aerostar]

Here is test code - it just counts 0 - 9 in clock type format wth colon between 2nd and 3rd digit.
eg 55:55 66:66 etc

I have ordered a display module from Ebay - so will see if current code works. Delivery probably a few weeks though.

'****************************************************************
'*  Name    : 0832test.bas                                      *
'*  Author  : aerostar                                          *
'*  Notice  : Copyright (c) 2021 [select VIEW...EDITOR OPTIONS] *
'*          : All Rights Reserved                               *
'*  Date    : 04/01/2021                                        *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          :                                                   *
'****************************************************************
'****************************************************************

'****************************************************************

'Sure electronics module 0832 led matrix
'
'connect RD on module to +5v
'connect OSC on module to GND

'Sure electronics module 0832 led matrix
'


            'displays XX:XX  COUNTING 0 TO 9

         DEFINE OSC 20	
@ device PIC16F628A,HS_OSC,BOD_ON,MCLR_ON 

TRISA = 0
TRISB = 0

               'change your ports to suit

CS var PORTB.7		'Connect this to CS1 (set dip switchs to 1 = on 2/3/4 = off)
WR var PORTA.4		'connect this to wr ACTUALLY CLOCK BUT HOLTEK CALL IT WR
DATALINE var PORTA.1	'connect this to DATA

'connect RD on module to +5v
'connect OSC on module to GND
				

ALOOP    VAR BYTE
COUNTER	var	byte
ADDRESS	var	byte
COMD	var	byte
ENDBIT	var	bit
CHARACTERS	var	byte [5]
SENDDOTS	var	byte
NUMBER VAR BYTE


' NUMBERS 0 TO 9  COLUMNS
data @0, %00000000,%01111100,%10001010,%10010010,%10100010,%01111100,%00000000,%00000000
data @8, %00000000,%00100010,%01000010,%11111110,%00000010,%00000010,%00000000,%00000000
DATA @16,%00000000,%01000010,%10000110,%10001010,%10010010,%01100010,%00000000,%00000000
DATA @24,%00000000,%10000100,%10000010,%10100010,%10110010,%11001100,%00000000,%00000000
DATA @32,%00000000,%00011000,%00101000,%01001000,%11111110,%00001000,%00000000,%00000000
DATA @40,%00000000,%11110100,%10100010,%10100010,%10100010,%10011100,%00000000,%00000000
DATA @48,%00000000,%01111100,%10010010,%10010010,%10010010,%01001100,%00000000,%00000000
DATA @56,%00000000,%10000110,%10001000,%10010000,%10100000,%11000000,%00000000,%00000000
DATA @64,%00000000,%01101100,%10010010,%10010010,%10010010,%01101100,%00000000,%00000000
DATA @72,%00000000,%01100100,%10010010,%10010010,%10010010,%01111100,%00000000,%00000000


CLEAR

 CMCON=7



PAUSE 500

'---------------- SENDS COMMANDS-------------------------------------


COMD = %00000100	'Comand mode
ADDRESS = %00000001	'osc on
GOSUB COMANDSEND
ADDRESS = %00000011	'led on
GOSUB comandsend
ADDRESS = %10101111	'pwm 16/16
GOSUB comandsend
ADDRESS = %00011000	'RC int clk sourse on
GOSUB comandsend


'---------- SENDS IMAGE DATA TO DISPLAY-----------------------------

COMD = %00000101	'Data Mode
NUMBER=0             'SET NUMBER TO 0

SHOWNUMBERS:

    ADDRESS = 0      'DIG 1 0, DIG2 16, DIG3 32, DIG4 48
    FOR ALOOP =0 TO 3     ' 4 DIGITS

    FOR COUNTER = 0 TO 7    ' NUMBER OF COLUMNS  PER DIGIT

    read (NUMBER*8)+COUNTER,SENDDOTS
    IF ALOOP=1 AND COUNTER = 7 THEN
    SENDDOTS=%00101000 'COLON IN COLUMN 7
    ENDIF
    
 	GOSUB DATASEND 
	ADDRESS = ADDRESS + 2     ' ADRESS INCREMENTS BY 2 EACH COLUMN
    NEXT COUNTER         
    NEXT


    PAUSE   1000
    NUMBER=NUMBER+1
    IF NUMBER =10 THEN
    NUMBER=0
    ENDIF
    GOTO SHOWNUMBERS




'----------------- sends infomation to display ----------------------
DATASEND:

	LOW CS
	SHIFTOUT DATALINE,wr,1,[COMD\3]		'send lower 3 bits of COMD byte
	SHIFTOUT DATALINE,wr,1,[ADDRESS\7]	'send lower 7 bits of adress byte
	SHIFTOUT DATALINE,wr,1,[SENDDOTS]		'send led data
	HIGH CS
    RETURN

COMANDSEND:

	LOW CS
	SHIFTOUT DATALINE,wr,1,[COMD\3]		'send lower 3 bits of COMD byte
	SHIFTOUT DATALINE,wr,1,[ADDRESS]	'send command byte
	SHIFTOUT DATALINE,wr,1,[ENDBIT\1]	'send 1 ENDBIT
	HIGH CS
    RETURN

END

[CuriousOne]

Thanks!
I also ordered it, see who's will arrive faster

[aerostar]

Mine arrived 30mins ago Jan 16th about 10:00 UK time, - connector pins a bit bent, although packing was good. Here it is running with the code above



You will only be able to use the link above as it is unlisted.

Works without a connection to RD pin, SYNC and COS pads

Also looks much better with red filter in front

[aerostar]

Forgot to mention the Ebay item number for anyone interested (Other suppliers are available)


eBay item number:
401111914275