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CommandStation-EX/FSH.h
Neil McKechnie 38be1d6152
Refactor OLED and LCD drivers (#178)
* Refactor SSD and LCD drivers

Rework display drivers to use inheritance and to remove unused functionality.  The changes here were previously in neil-hal branch but have been separated out because of the amount of changes in neil-hal.

* Update version.h
2021-07-13 21:15:38 +01:00

36 lines
964 B
C

#ifndef FSH_h
#define FSH_h
/* This is an architecture support file to manage the differences
* between the nano/uno.mega and the later nanoEvery, unoWifiRev2 etc
*
* IMPORTANT:
* To maintain portability the main code should NOT contain ANY references
* to the following:
*
* __FlashStringHelper Use FSH instead.
* PROGMEM use FLASH instead
* pgm_read_byte_near use GETFLASH instead.
* pgm_read_word_near use GETFLASHW instead.
*
*/
#include <Arduino.h>
#if defined(ARDUINO_ARCH_MEGAAVR)
#ifdef F
#undef F
#endif
#define F(str) (str)
typedef char FSH;
#define GETFLASH(addr) (*(const unsigned char *)(addr))
#define GETFLASHW(addr) (*(const unsigned short *)(addr))
#define FLASH
#define strlen_P strlen
#define strcpy_P strcpy
#else
typedef __FlashStringHelper FSH;
#define GETFLASH(addr) pgm_read_byte_near(addr)
#define GETFLASHW(addr) pgm_read_word_near(addr)
#define FLASH PROGMEM
#endif
#endif