Other Parts Discussed in Thread: LP5866
Tool/software:
Dear Sirs and Madams,
We created a PCB with an LP5868 mounted on it, but the LED is not lighting up.
LED Hardware Configuration : SW[0:5], CS[0:13]
interface : I2C mode (ADDR0, ADDR1 and IFS are connected to GND)
We tried to turn on one LED to check that the board was working, but after sending 'H' from VIO_EN from the external MCU, I issued the following command using the I2C interface, but the LED did not light up.
The steps we took to light up the L3-CS6 LED dots(1) CS Enable:
(1) CS enable
Write 0x01 to address 0x000
(2) Set Mode 1
Write 0x30 (=11 0000b) to address 0x003
110b : 6 scan lines
00b : Mode1
0b : PWM freq is 125kHz
(3) "LED dot L3-CS6" set on
Write 0x40 (=0100 0000b) to address 0x04C
(4) PWM of "L3-CS6" is on (About duty 50%)
Write 0x80 (=1000 0000b) to address 0x23C
The LED current remains at the default 20mA.
Are there any other commands I need to do besides the steps above?
Regards,
Masashi
