FastIO will not accept defined constants

[vkvark]

Very strange, if I try to compile this sketch:

#define led 10

void setup() {
fastioMode(led, OUTPUT);
}

void loop() {
}

Arduino IDE will not compile it, giving me the error below:

In file included from C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/Arduino.h:629:0,
                 from sketch\sketch_apr30a.ino.cpp:1:
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino: In function 'void setup()':
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:414:43: error: '_FIO_PORT_led' was not declared in this scope
  if((dir & INPUT_PULLUP) == INPUT_PULLUP) _FIO_PORT_##pin |= (1 << _FIO_BIT_##pin);\
                                           ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:414:43: note: suggested alternative: '_FIO_PORT_D0'
  if((dir & INPUT_PULLUP) == INPUT_PULLUP) _FIO_PORT_##pin |= (1 << _FIO_BIT_##pin);\
                                           ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:414:68: error: '_FIO_BIT_led' was not declared in this scope
  if((dir & INPUT_PULLUP) == INPUT_PULLUP) _FIO_PORT_##pin |= (1 << _FIO_BIT_##pin);\
                                                                    ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:414:68: note: suggested alternative: '_FIO_BIT_D10'
  if((dir & INPUT_PULLUP) == INPUT_PULLUP) _FIO_PORT_##pin |= (1 << _FIO_BIT_##pin);\
                                                                    ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:415:23: error: '_FIO_DDR_led' was not declared in this scope
     if(dir == OUTPUT) _FIO_DDR_##pin |= (1 << _FIO_BIT_##pin);\
                       ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:415:23: note: suggested alternative: '_FIO_DDR_0'
     if(dir == OUTPUT) _FIO_DDR_##pin |= (1 << _FIO_BIT_##pin);\
                       ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:415:47: error: '_FIO_BIT_led' was not declared in this scope
     if(dir == OUTPUT) _FIO_DDR_##pin |= (1 << _FIO_BIT_##pin);\
                                               ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:415:47: note: suggested alternative: '_FIO_BIT_D10'
     if(dir == OUTPUT) _FIO_DDR_##pin |= (1 << _FIO_BIT_##pin);\
                                               ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:416:10: error: '_FIO_DDR_led' was not declared in this scope
     else _FIO_DDR_##pin &= ~(1 << _FIO_BIT_##pin); \
          ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:416:10: note: suggested alternative: '_FIO_DDR_0'
     else _FIO_DDR_##pin &= ~(1 << _FIO_BIT_##pin); \
          ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:416:35: error: '_FIO_BIT_led' was not declared in this scope
     else _FIO_DDR_##pin &= ~(1 << _FIO_BIT_##pin); \
                                   ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
C:\Users\kvark\AppData\Local\Arduino15\packages\lgt8fx\hardware\avr\2.0.3\cores\lgt8f/fastio_digital.h:416:35: note: suggested alternative: '_FIO_BIT_D10'
     else _FIO_DDR_##pin &= ~(1 << _FIO_BIT_##pin); \
                                   ^
C:\Users\kvark\Downloads\sketch_apr30a\sketch_apr30a.ino:18:1: note: in expansion of macro 'fastioMode'
 fastioMode(led, OUTPUT);
 ^~~~~~~~~~
exit status 1

[LaZsolt]

Yes, FastIO can not accept defined constants or variables. It is not an error. FastIO not designed for such a type of source.

[hmeijdam]

taken from here

// =======================================================
// Larduino HSP for LGT8FX8D/P series
// Fast.IO demostration
// =======================================================
// Important note:
// fast_io interface is implemented by macro definition
// Compare to arduino's digital i/o interface, fast_io
// is small and fast.
// But fast_io has some limitations:
// 1. only support digital mode i/o operation;
// 2. fastio DO NOT support avriable as arguments!
// e.g, you can not use fastio as following:
// int led = 10;
// fastioMode(led, OUTPUT);
// but you can use it like this:
// #define led 10
// fastioMode(led, OUTPUT);
// or fastioMode(10, OUTPUT);
// or fastioMode(D10, OUTPUT);
// ========================================================

[vkvark]

Then you should change the comment:

// but you can use it like this:
// #define led 10
// fastioMode(led, OUTPUT);
// or fastioMode(10, OUTPUT);
// or fastioMode(D10, OUTPUT);

Because this code will not work.