adamksmith
a911b9e4cb
ESPHome external_component that presents a synthetic 64 KB FAT12 disk over the ESP32-S3's native USB-OTG, containing a one-byte switch_position file and a switch_position_grub.cfg snippet. The disk's volume serial is fixed at 0x55AA6922 to stay drop-in compatible with the upstream /etc/grub.d hook. Components: - fat12 / msc_disk: portable FAT12 sector synthesiser ported from reference/src/fat.c and the boot-sector / FAT / dir-entry generation in reference/src/usb.c. - usb_descriptors / tusb_glue: TinyUSB MSC class with our own callbacks delegating to MscDisk::read_lba (linker --allow-multiple-definition picks ours over esp_tinyusb's storage-backed defaults). - grub_boot_switch: top-level Component, NVS persistence on target changes, exposes targets table to sub-platforms. - select: HA-facing select platform reading parent's targets map. Validated end-to-end on an ESP32-S3-DevKitC-1: USB enumerates as 26ba:8003, /dev/sdb mounts FAT12, mtype reads back the live target, and POST /select/boot_target/set?option=Windows updates both files on the next host read.
25 lines
509 B
C++
25 lines
509 B
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/select/select.h"
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#include "../grub_boot_switch.h"
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namespace esphome {
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namespace grub_boot_switch {
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class BootTargetSelect : public select::Select, public Component {
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public:
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void set_parent(GrubBootSwitch *parent) { parent_ = parent; }
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void setup() override;
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protected:
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void control(const std::string &value) override;
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GrubBootSwitch *parent_{nullptr};
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};
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} // namespace grub_boot_switch
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} // namespace esphome
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