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feat(esp8266): Add rtc related attribute

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Wu Jian Gang
2018-06-01 15:30:58 +08:00
parent 58e6abc3ad
commit 3629617c52
1 changed files with 8 additions and 0 deletions
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8
components/esp8266/include/esp_attr.h
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@ -38,4 +38,12 @@
// Use as ets_printf(DRAM_STR("Hello world!\n"));
#define DRAM_STR(str) (__extension__({static const DRAM_ATTR char __c[] = (str); (const char *)&__c;}))
// Forces data into RTC memory.
// Any variable marked with this attribute will keep its value
// during a deep sleep / wake cycle.
#define RTC_DATA_ATTR __attribute__((section(".rtc.data")))
// Forces read-only data into RTC memory.
#define RTC_RODATA_ATTR __attribute__((section(".rtc.rodata")))
#endif /* __ESP_ATTR_H__ */