eaw/esp-idf
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

nvs, spi_flash: handle case when source data is in DROM

Browse Source
This commit is contained in:
Ivan Grokhotkov
2016-11-18 19:17:13 +08:00
parent 541b142654
commit 0b265dc2a7
3 changed files with 32 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
components/nvs_flash/src/nvs_page.cpp
View File

@@ -114,7 +114,30 @@ esp_err_t Page::writeEntryData(const uint8_t* data, size_t size)
assert(mFirstUsedEntry != INVALID_ENTRY);
const uint16_t count = size / ENTRY_SIZE;
auto rc = spi_flash_write(getEntryAddress(mNextFreeEntry), data, size);
const uint8_t* buf = data;
#ifdef ESP_PLATFORM
/* On the ESP32, data can come from DROM, which is not accessible by spi_flash_write
* function. To work around this, we copy the data to heap if it came from DROM.
* Hopefully this won't happen very often in practice. For data from DRAM, we should
* still be able to write it to flash directly.
* TODO: figure out how to make this platform-specific check nicer (probably by introducing
* a platform-specific flash layer).
*/
if ((uint32_t) data < 0x3ff00000) {
buf = (uint8_t*) malloc(size);
if (!buf) {
return ESP_ERR_NO_MEM;
}
memcpy((void*)buf, data, size);
}
#endif //ESP_PLATFORM
auto rc = spi_flash_write(getEntryAddress(mNextFreeEntry), buf, size);
#ifdef ESP_PLATFORM
if (buf != data) {
free((void*)buf);
}
#endif //ESP_PLATFORM
if (rc != ESP_OK) {
mState = PageState::INVALID;
return rc;