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Workaround strict-aliasing warnings

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See: https://travis-ci.org/felis/USB_Host_Shield_2.0/jobs/328511332 and 8a02ea67f5 (diff-6e1ff9551639ac89d99617863bf84e10)
This commit is contained in:
Kristian Sloth Lauszus 2018-01-14 15:51:36 +01:00
parent a7f67cdfc6
commit 0fb3e504d2
1 changed files with 32 additions and 2 deletions
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34
avrpins.h
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@ -1328,6 +1328,7 @@ MAKE_PIN(P13, 13); //
#elif defined(ESP8266) || defined(ESP32)
#define pgm_read_pointer(p) pgm_read_ptr(p)
#define MAKE_PIN(className, pin) \
class className { \
@ -1351,8 +1352,6 @@ public: \
#if defined(ESP8266)
#define pgm_read_pointer(p) pgm_read_ptr(p)
// Pinout for ESP-12 module
// 0 .. 16 - Digital pins
// GPIO 6 to 11 and 16 are not usable in this library.
@ -1370,6 +1369,37 @@ MAKE_PIN(P15, 15); // SS
#elif defined(ESP32)
// Workaround strict-aliasing warnings
#ifdef pgm_read_word
#undef pgm_read_word
#endif
#ifdef pgm_read_dword
#undef pgm_read_dword
#endif
#ifdef pgm_read_float
#undef pgm_read_float
#endif
#ifdef pgm_read_ptr
#undef pgm_read_ptr
#endif
#define pgm_read_word(addr) ({ \
typeof(addr) _addr = (addr); \
*(const unsigned short *)(_addr); \
})
#define pgm_read_dword(addr) ({ \
typeof(addr) _addr = (addr); \
*(const unsigned long *)(_addr); \
})
#define pgm_read_float(addr) ({ \
typeof(addr) _addr = (addr); \
*(const float *)(_addr); \
})
#define pgm_read_ptr(addr) ({ \
typeof(addr) _addr = (addr); \
*(void * const *)(_addr); \
})
// Pinout for ESP32 dev module
MAKE_PIN(P0, 0);