HT16K33 led 14 segment backpack

[louislouis]

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:

;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.

[richard]

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

[richard]

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

;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]]