How do we rename SS and Int pins to A5 and A0?

[jsweet13]

Hello,

I'm browsing through all files in the 2.0 library to find the SS and Int pinout for the Arduino Uno but not really having any luck.

I broke the connections and rerouted SS to pin A5 and rerouted INT to A0 on my Arduino Uno so I can display chars on a tftlcd display.

How do I reflect A5 and A0 pins in the USBcore.h file?

I see and changed this line to: typedef MAX3241e<PA0, PA5> MAX3241E;

Is this correct? And are there regular variable names I can use to change the PIN numbers dynamically in code?

Thanks for your help.

[Lauszus]

Please read: https://github.com/felis/USB_Host_Shield_2.0#interface-modifications.

The analog pins A0-A5 are referred to as P14-19, so to use A5 and A0 you should use the following:

typedef MAX3421e<P14, P19> MAX3421E;

[jsweet13]

Sounds great. I also found the analog pins were declared under a pinout section for the Intel Galileo in one of the pin definition header files and made changes accordingly. It's working pretty good.

Is there a way to bypass the USB.Task continuous loop as shown in the bootkeyboard example and scanf() with stdio.h to get individual chars?

I tried breaking up the class to just list the functions but when I do that, oemtoascii() function becomes invalid and the redefined for USB and prs become invalid.

I'd like to find a way to catch chars with scanf() using the USB keyboard as stdio input without the USB.Task function.

I also noticed USB is an Arduino IDE keyword but think that refers to the Uart to USB bridge.

I was trying to print individual chars to an LCD display with a custom font I made but when I send the char to my function printchar() in the keydown() that states oemtoascii((char)c), my code keeps rebooting to setup(), even if I move the USB.Task() to another function or send the program to loop() or do a while(1){};

How do I stop usb.task from being continuous and scanf() for the chars?

Thanks

[Lauszus]

The function OnKeyDown will be called every time a key is pressed. I don't understand why you want to use scanf to read the keyboard. You can just implement similar functionality yourselves.

Please share your code, so I can have a look at it.

Sorry, but it sounds like you have not really understood how this library works. You will have to call Usb.Task(), as this is how the library reads from the different USB devices.

[jsweet13]

I was trying to figure out how to use the functions outside of the class but it does work as is.

Will try to post some code in a bit.

I might try a function call embedding the OEMtoAscii(mod, key) into my custom function PrintChar that prints pixels to a display to form:

PrintChar(OEMtoAscii(mod, key));

Void PrintChar(uint8_t c){ //pointer to char[] artwork };

I'm guessing mod and key variables are both needed to convert the keystrokes to ASCII values?

The scanf() seems to work with chars coming from the serial terminal, but I was wanting to switch() case each char after getting the chars to print with my font.

I might have to make all the variables public so my functions can see them.

[Lauszus]

Since it is just a regular class you can just make public variables and then access them from C code. I'm closing this issue now, as I believe the issue has been solved.