espressif / esp-who

Face detection and recognition framework
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SW reset loop #107

Closed NewStackLearner closed 4 years ago

NewStackLearner commented 5 years ago

In camera web server example. I noticed, if the SPI mode is QIO following error is generated.

rst:0x3 (SW_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

This does not happen when SPI mode is DIO. As far as I know, QIO provides better throughput. Not sure if this is a hardware design limitation.

Please confirm.

me-no-dev commented 5 years ago

Correct mode depends on your flash chip. Most are QIO compatible. QIO has double the throughput of DIO, but at the same time DIO@80MHz == QIO@40MHz