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81d27b403e
PSTR() and F() macros correctly place string into flash memory relying on PROGMEM PROGMEM uses ICACHE_RODATA_ATTR Print and String classes fixed up str* classes fixed up
94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
#ifndef __PGMSPACE_H_
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#define __PGMSPACE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdio.h>
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#include "ets_sys.h"
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#include "osapi.h"
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#ifdef __cplusplus
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}
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#endif
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#define PROGMEM ICACHE_RODATA_ATTR
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#define PGM_P const char *
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#define PGM_VOID_P const void *
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#define PSTR(s) (__extension__({static const char __c[] PROGMEM = (s); &__c[0];}))
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#define _SFR_BYTE(n) (n)
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typedef void prog_void;
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typedef char prog_char;
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typedef unsigned char prog_uchar;
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typedef int8_t prog_int8_t;
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typedef uint8_t prog_uint8_t;
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typedef int16_t prog_int16_t;
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typedef uint16_t prog_uint16_t;
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typedef int32_t prog_int32_t;
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typedef uint32_t prog_uint32_t;
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#define SIZE_IRRELEVANT 0x7fffffff
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extern void* memcpy_P(void* dest, const void* src, size_t count);
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extern char* strncpy_P(char* dest, const char* src, size_t size);
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#define strcpy_P(dest, src) strncpy_P((dest), (src), SIZE_IRRELEVANT)
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extern char* strncat_P(char* dest, const char* src, size_t size);
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#define strcat_P(dest, src) strncat_P((dest), (src), SIZE_IRRELEVANT)
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extern int strncmp_P(const char* str1, const char* str2P, size_t size);
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#define strcmp_P(str1, str2P) strncmp_P((str1), (str2P), SIZE_IRRELEVANT)
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extern int strncasecmp_P(const char* str1, const char* str2P, size_t size);
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#define strcasecmp_P(str1, str2P) strncasecmp_P((str1), (str2P), SIZE_IRRELEVANT)
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extern size_t strnlen_P(const char *s, size_t size);
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#define strlen_P(strP) strnlen_P((strP), SIZE_IRRELEVANT)
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extern int printf_P(const char *formatP, ...);
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extern int snprintf_P(char *str, size_t strSize, const char *formatP, ...);
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extern int vsnprintf_P(char *str, size_t strSize, const char *formatP, va_list ap);
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// flash memory must be read using 32 bit aligned addresses else a processor
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// exception will be triggered
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// order within the 32 bit values are
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// --------------
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// b3, b2, b1, b0
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// w1, w0
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#define pgm_read_byte(addr) \
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(__extension__({ \
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PGM_P __local = (PGM_P)(addr); /* isolate varible for macro expansion */ \
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ptrdiff_t __offset = ((uint32_t)__local & 0x00000003); /* byte aligned mask */ \
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const uint32_t* __addr32 = reinterpret_cast<const uint32_t*>(reinterpret_cast<const uint8_t*>(__local)-__offset); \
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uint8_t __result = ((*__addr32) >> (__offset * 8)); \
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__result; \
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}))
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#define pgm_read_word(addr) \
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(__extension__({ \
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PGM_P __local = (PGM_P)(addr); /* isolate varible for macro expansion */ \
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ptrdiff_t __offset = ((uint32_t)__local & 0x00000002); /* word aligned mask */ \
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const uint32_t* __addr32 = reinterpret_cast<const uint32_t*>(reinterpret_cast<const uint8_t*>(__local) - __offset); \
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uint16_t __result = ((*__addr32) >> (__offset * 8)); \
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__result; \
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}))
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#define pgm_read_dword(addr) (*reinterpret_cast<const uint32_t*>(addr))
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#define pgm_read_float(addr) (*reinterpret_cast<const float*>(addr))
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#define pgm_read_byte_near(addr) pgm_read_byte(addr)
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#define pgm_read_word_near(addr) pgm_read_word(addr)
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#define pgm_read_dword_near(addr) pgm_read_dword(addr)
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#define pgm_read_float_near(addr) pgm_read_float(addr)
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#define pgm_read_byte_far(addr) pgm_read_byte(addr)
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#define pgm_read_word_far(addr) pgm_read_word(addr)
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#define pgm_read_dword_far(addr) pgm_read_dword(addr)
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#define pgm_read_float_far(addr) pgm_read_float(addr)
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#endif //__PGMSPACE_H_
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