HT16K33 led 14 segment backpack

Hi folks,

I want to ask members, someone has done working with this HT16K33 14. segment LED backpack in PBP.
https://www.adafruit.com/product/1911
I am trying to get this thing live, but no success. Any help welcome.

Thanks.

Louis

i did post an example but its been expunged or lost when the forum crashed, all i can find on my pc is this

Code:

---

;7x5 led array witk ht16k33  mapped col 0-5  a0 - a6;highbyte of ROW[x] maps to a0:7  i2cread/write natively sends high byte first.
;chip actually wants data lowbyte first  ~! typical
;pic12f1822
#CONFIG
    __config _CONFIG1, _FOSC_INTOSC & _MCLRE_ON & _CP_OFF & _CPD_OFF
    __config _CONFIG2, _PLLEN_OFF & _LVP_OFF
#ENDCONFIG


OSCCON = %01110000
DEFINE OSC 8


TRISA = %001011     


ANSELA = 0                                'Digital
'    DEFINE DEBUG_REG PORTA
'    DEFINE DEBUG_BIT 0      ;  if not used for pwr 
'    DEFINE DEBUG_BAUD 9600
'    DEFINE DEBUG_MODE 0   
'    pause 2000
'    Debug "Start",13 ,10
 
' DISPLAY ON  0X21
' NO BLINK    0X81
' ROW/INT    0XA0
' BRIGHT      0XEX
 
 scl var portA.4
 sda var portA.5
 Led var LATA.2
 
 SADD VAR BYTE
 ROW VAR WORD[5]
 COL var byte
 TMP VAR WORD
 CLEAR


 INIT:
 i2cwrite sda,scl,$E0,[$21] 'on
 i2cwrite sda,scl,$E0,[$81] 'blink off
 i2cwrite sda,scl,$E0,[$E8] 'HALF BRIGHT
 i2cwrite sda,scl,$E0,[$A0] 'NO INT
 i2cwrite sda,scl,$E0,[SADD,ROW,ROW,ROW,ROW,ROW] ;CLEAR


Main:
    COL=35
    while col        ;walk a led backwards through array
        col=col-1
        TMP=0
        TMP.0[14-(COL/5)]=1
        SADD = 5
        WHILE SADD
            SADD=SADD-1
            ROW[SADD]=0
        WEND         
        ROW[(COL//5)]=TMP
        i2cwrite sda,scl,$E0,[SADD,ROW[0],ROW[1],ROW[2],ROW[3],ROW[4]]
        pause 100
    wend
    SADD = 0
    FOR ROW=0 TO 127
        ROW=ROW<<8
        i2cwrite sda,scl,$E0,[SADD,ROW,~ROW,ROW,~ROW,ROW]
        pause 50
        ROW=ROW>>8
    NEXT
    FOR COL=0 TO 34
        TMP=0
'        SADD=COL//5
        TMP.0[14-(COL/5)]=1
'        Debug 13,10,#COL,9,HEX TMP,9,#SADD
        SADD = 5
        WHILE SADD
            SADD=SADD-1
            ROW[SADD]=0
        WEND         
        ROW[(COL//5)]=TMP
        i2cwrite sda,scl,$E0,[SADD,ROW[0],ROW[1],ROW[2],ROW[3],ROW[4]]
        pause 100
    NEXT
    LED=!LED
    pause 500
goto main
end

---

Thanks for reply. Not working but now more clear for me how to handle this controller. I tried init the controller with default I2c adress $70 like this:

Code:

---

;pic 12F1840
#CONFIG
    __config _CONFIG1, _FOSC_INTOSC & _MCLRE_ON & _CP_OFF & _CPD_OFF
    __config _CONFIG2, _PLLEN_OFF & _LVP_OFF
#ENDCONFIG


OSCCON = %01110000
DEFINE OSC 8


TRISA = %000000     


ANSELA = 0                                'Digital
 
 scl var portA.2
 sda var portA.1
 
 SADD VAR BYTE
 ROW VAR WORD[5]
 COL var byte
 TMP VAR WORD
 CLEAR

 INIT:
 i2cwrite sda,scl,$70,[$21] 'on
 i2cwrite sda,scl,$70,[$81] 'blink off
 i2cwrite sda,scl,$70,[$E8] 'HALF BRIGHT
 i2cwrite sda,scl,$70,[$A0] 'NO INT
 i2cwrite sda,scl,$70,[SADD,ROW,ROW,ROW,ROW,ROW] ;CLEAR

pause 200

;send something

row=5
SADD=1

i2cwrite sda,scl,$70,[SADD,ROW[0],ROW[1],ROW[2],ROW[3],ROW[4]]

---

No sign of life.

Quote:

---

No sign of life.

---

would not expect any with $70 as an address , if you have a ht16k33 the address is %1110xyz0 where xyz are a2 a1 a0

if a0-a2 are set low the the address is $e0 as per my example

not only that row[0] to [4] are set to 0 still

Code:

---

;pic 12F1840#CONFIG
  __config _CONFIG1, _FOSC_INTOSC & _MCLRE_ON & _CP_OFF & _CPD_OFF 
  __config _CONFIG2, _PLLEN_OFF & _LVP_OFF
#ENDCONFIG
OSCCON = %01110000
DEFINE OSC 8 TRISA = %000000     
ANSELA = 0                                'Digital 
scl var portA.2
sda var portA.1
  SADD VAR BYTE
ROW VAR WORD[4]
COL var byte
TMP VAR WORD
CLEAR
INIT:
 i2cwrite sda,scl,$e0,[$21] 'on 
i2cwrite sda,scl,$e0,[$81] 'blink off
i2cwrite sda,scl,$e0,[$E8] 'HALF BRIGHT
i2cwrite sda,scl,$e0,[$A0] 'NO INT
 i2cwrite sda,scl,$e0,[SADD,ROW,ROW,ROW,ROW] ;CLEAR
pause 200;send something
row[0]=5:row[1]=4:row[3]=2:row[0]=1
SADD=1 ; not sure about this might need to be 0
i2cwrite sda,scl,$70,[SADD,ROW[0],ROW[1],ROW[2],ROW[3]]

---

That default address I got from product listing:

IIC address: default address 0X70
A0, A1, A2,: IIC data address control terminal
IIC address calculation: 0X70+A0+A1+A2 (floating is 0, shortet A0 is 1, A1 is 2, A2 is 4,
for example A0 and A2 is shorted the IIC address at this time = 0X70+1+4=0X75)

that's for a 7 bit i2c address scheme, arla arduino. pbp uses an 8 bit address for i2c

Of course, you're right. Now something happening. The display lit up and does some counting and flickering with segments.
That with your firstly posted code. Now figuring out how to display numbers and characters.

don't lose sight of the fact that my code is for a 5 x 7 bit matrix , you have a 4 x 14 bit alpha led's