10000 Fix check for rtc mem sdk api in ESPClass by devyte · Pull Request #5330 · esp8266/Arduino · GitHub
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Fix check for rtc mem sdk api in ESPClass #5330

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Fix check for rtc mem sdk api in ESPClass #5330

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a86ceae
deprecate RTC_REG macros in favor of TIMER_REG macros (old typo in ma…
devyte Nov 9, 2018
ab1ddb4
cleanup/unify sector size define value
devyte Nov 9, 2018
e42bbfd
Merge branch 'master' into issue2421
devyte Nov 9, 2018
d793ed2
replicate spi_flash_sec_size.h file for host tests
devyte Nov 9, 2018
8f84488
Merge branch 'issue2421' of https://github.com/devyte/Arduino into is…
devyte Nov 9, 2018
e56e308
Fix check for rtc mem sdk api in ESPClass
devyte Nov 9, 2018
7e2c080
Merge branch 'master' into issue2875
devyte Nov 9, 2018
17cc8c9
Update comment about RTC user mem and OTA
devyte Nov 12, 2018
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Update comment about RTC user mem and OTA 
Explain interaction between RTC user mem and OTA, where Updater saves the eboot command in the first 128 bytes of RTC user mem.
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@devyte
devyte authored Nov 12, 2018
commit 17cc8c9660b033c4198b9cb44f771cd9ba35ff3f
10 changes: 9 additions & 1 deletion cores/esp8266/Esp.cpp
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Expand Up @@ -155,7 +155,15 @@ offset is the user block number (block size is 4 bytes) must be >= 0 and <128
data is a pointer to data, 4-byte aligned
size is number of bytes in the block pointed to by data

Same for write
Same for write.

Note: If the Updater class is in play, e.g.: the application uses OTA, the eboot
command will be stored into the first 128 bytes of user data, then it will be
retrieved by eboot on boot. That means that user data present there will be lost.
Ref:
- discussion in PR #5330.
- https://github.com/esp8266/esp8266-wiki/wiki/Memory-Map#memmory-mapped-io-registers
- Arduino/bootloaders/eboot/eboot_command.h RTC_MEM definition
*/

bool EspClass::rtcUserMemoryRead(uint32_t offset, uint32_t *data, size_t size)
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