![]() $ ~/avrgcc/bin/avr-g -mmcu=atmega2560 test.cpp -c -o test.o configure -target=avr -prefix=/nix/store/43k8vl3dzm102wj1jsdb1sil9k5b0k6r-avr-gcc-libc -disable-nls -disable-libssp -with-dwarf2 -disable-install-libiberty -with-system-zlib -enable-languages=c,c Reading specs from /nix/store/43k8vl3dzm102wj1jsdb1sil9k5b0k6r-avr-gcc-libc/lib/gcc/avr/6.3.0/device-specs/specs-avr2ĬOLLECT_GCC=/home/ambro/avrgcc/bin/avr-g ĬOLLECT_LTO_WRAPPER=/nix/store/43k8vl3dzm102wj1jsdb1sil9k5b0k6r-avr-gcc-libc/libexec/gcc/avr/6.3.0/lto-wrapperĬonfigured with. Here's the command used and the error: $ ~/avrgcc/bin/avr-g -v Static const uint32_t Address = _SFR_IO_ADDR(PORTA) I suspect something can be done with macros by "parsing" the definitions, but I only see how to remove the first set of parentheses and not how to deal with the asterisk.ĮDIT: The case where it actually fails is this: #include What is a working approach to extract the register address as a constant expression integer? #define _SFR_IO_ADDR(sfr) (_SFR_MEM_ADDR(sfr) - _SFR_OFFSET) #define _SFR_IO8(io_addr) _MMIO_BYTE((io_addr) _SFR_OFFSET) #define _MMIO_BYTE(mem_addr) (*(volatile uint8_t *)(mem_addr)) Here's a summary of definitions in AVR libc: #define _SFR_OFFSET 0x20 However, GCC 6.3.0 produces the following error: error: reinterpret_cast from integer to pointer In GCC 5, this worked: static constexpr uint16_t Address = _SFR_IO_ADDR(PORTA) I do not really understand why this error appears because the file ‘io.h’ exists in the correct folder.In a C program I need to get the address of an I/O register as a constant expression that can be passed as an integer in a template parameter. I can compile and upload simple sketches but the FastLED library causes include problems: In file included from C:\Program Files (x86)\Arduino\libraries\FastLED/led_sysdefs.h:27:0,įrom C:\Program Files (x86)\Arduino\libraries\FastLED/FastLED.h:44,įrom C:\Program Files (x86)\Arduino\libraries\LEDCube3/utilities.h:3,įrom C:\Program Files (x86)\Arduino\libraries\LEDCube3/LEDCube.h:3,įrom C:\Users\Wieland\Documents\Arduino\LEDCube_VS\LEDCube_VS.ino:1:Ĭ:\Program Files (x86)\Arduino\libraries\FastLED/platforms/avr/led_sysdefs_avr.h:12:20: fatal error: avr/io.h: No such file or directory Because of this did I order a STM32 which should have enough RAM for even bigger cubes. With its 8kB RAM is the Mega pretty good for LEDCubes but some animations use up to 6.5kB RAM and the Mega starts to limit me by coding animations. I am currently programming my 7³ RGB LEDCube and using an Arduino Mega. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2022
Categories |