Motor encoder printing

Programming Support PROS Support
1

I’m using pros to program my robot, and i am trying to experiment with v5 motor encoders. I am trying to print the motor.get_position() function but it always says that it cant convert the double value into a string value. I am new to use pros and thank you for helping.

2 
#include <string>
std::string str=std::to_string(motor.get_position());
std::cout<<str.c_str()<<std::endl;
1 Like
3

Wow. That’s a lot of code…

printf("%f\n", motor.get_position());

or:

std::cout << motor.get_position() << std::endl;
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4

Thanks. But how do i print this on the controller’s screen? Does this work?

lcd_print(0, “%f\n”, motor.get_position());

Thanks a lot.

5

I guess what he meant was how to convert double into const char*

#include <string>
std::string str=std::to_string(motor.get_position());
lcd_print（0，“％s \ n”，str.c_str(））;
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6

That’s more code than is necessary

pros::lcd::print(0, "%f", motor.get_position());
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8

I haven’t heard of any issues with LLEMU. Open an issue on GitHub with an example and we’ll take a look.

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9

My student said that the main problem was the length of printing.
Mingming remote control screen still has space. If it’s longer, it’s useless.

  joy1->print(0, 0, "joy  robot ball");
while(1)    
if (_timerDisPlay.getDtFromMark() >= 100)
    {
        joy->print(1, 0, "%d%% %.0f%% %u", joy->get_battery_capacity(), pros::battery::get_capacity(), getBallNums());
        _timerDisPlay.placeMark();
    }

IMG_20190303_124027
IMG_20190303_124027992×744 222 KB

    joy1->print(0, 0, "joy   robot   ball");//Adding more space

IMG_20190303_124316
IMG_20190303_124316744×992 149 KB

And :

joy->get_battery_capacity()

It seems inaccurate. Is there something wrong with my usage? :disappointed_relieved:

10

No, I think you are just running into the limit we have on string length able to be sent to the controller.

1 Like