hi
I would like to ask about the LM3642 design as follows.
1. Development progress
- Control by I2C communication, HW pin such as STROBE, TX / TORCH etc. is not used.
- It is implemented in order of about 1.2A -> 350mA -> 350mA flashing -> Off in 4 steps.
- Designed to keep the LED always on at 1.2A, 350mA.
- The power source uses the battery to drop or turn off the LED brightness when falling below a certain voltage.
(Plan to use IVFM mode or read the IVFM bit in Flags Register (0x0B)
2. Inquiries
- I need to turn on the FLASH LED all the time.
(I reset it to Enable Register (0x0A) before "Flash Time-Out Time". In this case, the blinking occurred.)
- When I "Read" the communication with the IC, I tried to communicate with "Chip Add + R / W (1) - Register Add (0x0B) - Rx Data" as shown in the figure.
It seems that the second data (Register Add) can not be sent properly and the read can not be done properly.
When "Chip Add + R / W (1) - Rx Data" communication is performed, communication is not done properly, but unidentified data is received.
Is it correct to configure the communication protocol as "Chip Add + R / W (1) - Register Add (0x0B) - Rx Data" as shown in the datasheet?
