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arduinoembeddedcommunicationi2cspi

Communication Protocol for Transmitter Module

I am trying to figure out the communication protocol of the transmitter chip found inside an RC remote (FS-GT2B). Originally, I thought it was I2C but after some research it seems less likely because it is lacking some characteristic lines. The silkscreen says "SCK", "SCS" and "SDIO". Here's a picture of the chip's pinouts: image. Can anyone offer some pointers as to what the communication protocol of this guy is?

Thanks!

Solution

  • The pins correspond to clock (SCK), chip select (SCS), and data input output (SDIO). You need to toggle the SCK pin in the appropriate way as you change or read the data on the SDIO pin. the SCS pin is likely for data direction (read or write).

    There is no easy way to determine the protocol from a black box. Instead, you need to remove the RF shielding case to see the chip. A soldering iron and a solder sucker will do the job. Be careful not to overheat the circuit inside.

    Use the number on chip to determine what kind of chip it is, then find the datasheet by searching the internet.

    Once you have all that and write some code, this is appropriate place to ask questions about it.