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Fix erase size in ESP.eraseConfig

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SDK uses final 4 sectors of flash for configuration data.
ESP.eraseConfig would only erase 2 sectors, so in some cases of
corrupted data ("system param error"), users could not fix the issue
using ESP.eraseConfig, and had to use esptool instead.

Thanks @HugoML for reporting this.
This commit is contained in:
Ivan Grokhotkov 2017-09-22 15:52:00 +08:00 committed by Ivan Grokhotkov
parent 93ad1fb3b6
commit 80aeacfb80
1 changed files with 6 additions and 12 deletions
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18
cores/esp8266/Esp.cpp
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@ -397,22 +397,16 @@ struct rst_info * EspClass::getResetInfoPtr(void) {
bool EspClass::eraseConfig(void) {
bool ret = true;
size_t cfgAddr = (ESP.getFlashChipSize() - 0x4000);
size_t cfgSize = (8*1024);
const size_t cfgSize = 0x4000;
size_t cfgAddr = ESP.getFlashChipSize() - cfgSize;
noInterrupts();
while(cfgSize) {
if(spi_flash_erase_sector((cfgAddr / SPI_FLASH_SEC_SIZE)) != SPI_FLASH_RESULT_OK) {
ret = false;
for (size_t offset = 0; offset < cfgSize; offset += SPI_FLASH_SEC_SIZE) {
if (!flashEraseSector((cfgAddr + offset) / SPI_FLASH_SEC_SIZE)) {
return false;
}
cfgSize -= SPI_FLASH_SEC_SIZE;
cfgAddr += SPI_FLASH_SEC_SIZE;
}
interrupts();
return ret;
return true;
}
uint32_t EspClass::getSketchSize() {