ppm2dsm

PPM to DSM signal converter

This version has been tested with STM32F030 F4P6

HW connections to STM32F030 are as this:

• PA0 LED output (active low, connect RED LED in series ~1kOhm to Vdd)
• PA1 Bind button input, active low, connect to pushbutton to ground (optional)
• PA2 Serial DSM output
• PA9 PPM input

DSM2 serial frame format is this:

• header:

  • byte 1: 0x80 == BIND mode, 0x00 = NORMAL mode
  • byte 2: 0x00

• channel data:

  • byte 1:
    • bit 0-1: Bits 8-9 of channel data
    • bit 2-4: Channel number
  • byte 2:
    • bit 0-7: Bits 0-7 of channel data

ENTER BIND MODE

You can enter BIND mode by putting throttle stick (chan #1) higher than mid position when turning on the sender. BIND mode is left when throttle stick is below mid position.