unsigned int not work on project

Question

please help. I have old code for making analog synth and cant compile it on teensy 2.0, I use Arduino 1.6.9 and teensyduino 1.29 Full code with errors

Error log: invalid conversion from 'void ()(uint8_t, unsigned int) {aka void ()(unsigned char, unsigned int)}' to 'void ()(uint8_t, int) {aka void ()(unsigned char, int)}' [-fpermissive]

Mistake here, when use function: doBend;

void doBend(byte channel, unsigned int bend_usb) {
    byte chip_select = channel / 4; 
    channel = channel % 4;
    bendMSB = bend_usb >> 7; 
    bendLSB = bend_usb % B01111111; 
    if(channel >=0 && channel <= 2) {
       bend_MSB[channel + (chip_select * 4)] = bendMSB;
       bend_data[channel + (chip_select * 4)] = bend_MSB[channel + (chip_select * 4)];
       writeFrequency(pitchData[channel + (chip_select * 4)], channel, chip_select);
    }
}

Arduino don't know "unsigned int bend_usb". I dont know c++ and need your help, how to fix this bug!

"I don't know what I'm doing; fix this for me" tends not to go over well on SO. — jonspaceharper, Aug 22 '16 at 17:43
what function signature does `usbMIDI.setHandlePitchChange` expect for its argument? — jaggedSpire, Aug 22 '16 at 17:45

smateo · Answer 1 · 2016-08-22T17:45:47.610

-1

The issue is probably related to this expression: usbMIDI.setHandlePitchChange(doBend);

In this expression doBend behaves as a pointer to a function. Could you check the type of the parameter of the setHandlePitchChange function?

edited Aug 22 '16 at 17:45

answered Aug 22 '16 at 17:41

smateo

177
5

1

`int` would be casted automatically to an `unsigned int. Looks like the function signature doesn't match a desired function pointer signature. – πάντα ῥεῖ Aug 22 '16 at 17:44
That's true, I was editing my answer at the same time you respond me. – smateo Aug 22 '16 at 17:47
2

Now, your answer looks like it should be a comment. And yes, I know you can't comment yet. – πάντα ῥεῖ Aug 22 '16 at 17:48

unsigned int not work on project

1 Answers1