nikkilae / ppm-reader Goto Github PK

Hi folks,
is there a way to add failsafe mechanism for this, when there are no new signal from receiver? i think this is a crucial feature.
best regards, d.

I have an incompatibility problem with the interrupts and the ppm reader library.
In my project I need to read a ppm signal and another sensor that uses an interrupt. I made a simplify version of my code which keeps the error. If anyone has a solution I will be very grateful.

arduino code below

#include <PPMReader.h>    

#define interruptPin_TEST 3 //interrupt pin for a test sensor
int interruptPin_PPM = 2;   //interrupt pin for the ppm library
int channelAmount = 6;      //declaration of the 6 channels 

PPMReader ppm(interruptPin_PPM, channelAmount); //declaration of reading of a PPM signal

void testvoid(){
  Serial.print("void test use");
  }
  
void setup() {
  Serial.begin(19200);
  pinMode(interruptPin_TEST, INPUT);
  attachInterrupt(digitalPinToInterrupt(interruptPin_TEST), testvoid, RISING); //declaration of an interrupt for a test sensor
}

void loop() {
  unsigned long channel_1 = ppm.latestValidChannelValue(1, 0); //read channel 1 of the PPM signal
  Serial.print(String(channel_1) + " ");                  
  Serial.println();
}

error in the console during compilation below

WInterrupts.c.o (symbol from plugin): In function `attachInterrupt':
(.text+0x0): multiple definition of `__vector_1'
C:\Users\FREDPO~1\AppData\Local\Temp\arduino_build_699786\libraries\InterruptHandler\WInterrupts.cpp.o (symbol from plugin):(.text+0x0): first defined here
WInterrupts.c.o (symbol from plugin): In function `attachInterrupt':
(.text+0x0): multiple definition of `__vector_2'
C:\Users\FREDPO~1\AppData\Local\Temp\arduino_build_699786\libraries\InterruptHandler\WInterrupts.cpp.o (symbol from plugin):(.text+0x0): first defined here
collect2.exe: error: ld returned 1 exit status

hoping to have news, thank you in advance

Hello!

Thanks for your work, your code works fine.

When applying your when, I ran into a small problem.

All the values ​​I receive from the transmitter have small value jumps.

Getting data in this way

Steering = constrain(ppm.latestValidChannelValue(1, 0), 1000, 2000); // Steering wheel
Throttle = constraint(ppm.latestValidChannelValue(2, 0), 1000, 2000); // Gas pedal
Light = constrain(ppm.latestValidChannelValue(3, 0), 1000, 2000); // Button Light

I have output values ​​+-4

For example, the default Steering in the middle position should be 1500, I get 1496-1504 at the output, the same thing happens with Throttle. About 60% I have a value of 1500, the rest is 1496 or 1504.

I thought it had to do with variable resistors, but Light is a normal switch and its readings also float around +-4.

I use an arduino pro mini and I receive a signal from a 3-channel transmitter microcontroller, I could not find a datasheet for the transmitter microcontroller, so I take the data that was sent to the radio module in the past for transmission.

I have a simple oscilloscope and I can not track the signal applied to the arduino pin, I also tried to look at the signal with a logic analyzer, but my software does not support ppm signal.

Also, I do not know how the receivers supplied for my remote control behave, perhaps they do not take into account such a spread in values ​​and control the device when the values are changed within larger limits. In my case, the same arduino acts as a receiver and my connected servos and motors react very brightly to every change in values.

Please tell me possible solutions!

how can i modify to work for arduino uno?

Hi

I was trying to use this library with esp32 and it can't compile due to the dependency with InterruptHandler library which requires avr.h (same problem in #3 ).

If I understood correctly, the library is needed to have the possibility to call class members as ISR... I was able to modify the library (see here my fork) to remove the dependency and implementing a different approach (explained here).

Before asking for a PR, @Nikkilae I'd like to know your opinion about this...

Thanks!

All I get is 0s in the serial monitor. Using a Mega 2560. Tried pin 2 and 3. Uncommented the #include InterruptHandler.h. Tried reading RawValues. Nothing Works. I did notice in the attachInterrupt call of PPMReader, no ISR was stated as an argument . Is that right? I can't get this to work..

Hi, i use your library for my projects and it works super responsive.
But i could not find a way to use the library for 10 channels. is there a limitation for 6? and why?
int channelAmount = 10; does not work out of the box for me. Am I doing something wrong?

can you please make the library work for stm32?
the exact one is the STM32F103c. upon trying to compile it has an issue with include avr/io.h. i tried to comment this out but then other issues appear.
many thanks, George

I am using flysky-i6 with arduino. But I am getting a lot of noise. Suddenly the value of channel spikes up and down. Due to this issue my RC car goes crazy.

I have attested the photo of values I serial plotted. Please help me how to solve this issue.

Все отлично работает

Hello! i wanted to share that i have your code working with 10 channels. I wanted to share this as in your github page its stated that it has been proven with 6 channels.

your code has been great! thank you :)

i used the FS-16X with the FS-iA6B.