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andybrown.me.uk | ||
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danielmangum.com
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| | | | | The ESP32-S3 is a popular microcontroller (MCU) for a variety of reasons, such as its support for external pseudostatic RAM (PSRAM). One of its lesser known features is its Universal Serial Bus (USB) On-The-Go (OTG) controller. The previously released ESP32-S2, as well as the new ESP32-P4, also have USB OTG support, with the latter having two controllers. USB OTG devices can act as a device or as a host. This is a popular feature for smartphones, which, when attached to a laptop or desktop should act as a device, but may want to act as a host for some peripherals, such as a keyboard, that may be attached to it. | |
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blog.atx.name
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| | | | | atx - My personal blog | |
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bikerglen.com
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ciesie.com
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| | | You programmed STM32 microcontroller using Nucleo or Discovery boards. That means you used Serial Wire Debug (SWD) for programming/debugging. Now, you are designing a PCB with a STM32 microcontroller on it, which means you have to be able to program it. One solution is uploading the code through a bootloader - a small piece of software, made by ST that has been saved in the protected (read-only) memory of the microcontroller. | ||
