STM32F401CCU6 Blackpill
STM32 F4 FW 1.28.1
STM32CubeIDE v1.16.0
HAL
This code was written to drive the internal LED driver of the FMS FCX10 model vehicle. The signals were measured directly from the vehicle with a logic analyzer.
For each element in the fms_led array, "0" means Deactive, "1" means Active.
The state of each element in the array is sent for 3ms.
If the element in the array is 0, the square wave is high for 1ms and then low for 2ms.
If the element in the array is 1, the square wave is high for 2ms and then low for 1ms.
The 9th element should always be 0 and then low for 3ms.
The total signal duration is 30ms(~33.3Hz) and send periodically.
Enhanced coding may be required to dynamically change the elements within the array at runtime.
int fms_led[9] = { // 1: HIGH, 0: LOW
0, // right signal
0, // left signal
0, // ILL 1.step
0, // ILL 2.step
0, // ? probably unused/free pin on the led driver
0, // reverse/brake
1, // no signal fast blink (low prio)
1, // no signal slow blink (high prio)
0 // always must be LOW
};
LED Driver is FLYSKY FS-DB01.
3in1 ESC (ESC+Receiver+LED Drive Signal) is FS-R11D-ESC-BS.
Transmitter is FS-MG11-BS.
