Pressing the manage button (GPIO1) overlays a small QR code -- "SCAN TO MANAGE" -- in the top-right corner of whatever photo is currently on screen, linking to the server's config page, then reverts to the plain photo after 30 seconds. The overlay is spliced into the existing streaming fetch as chunks pass through (frame_client.c's http_read_fn), rather than buffering the full 192,000-byte frame in RAM: only the small overlay rectangle itself (~30KB) is ever held in memory, generated via new stride-parameterized drawing helpers (epd_draw_*_ex in epd_draw.c) that let the existing QR/text drawing code target an arbitrarily-sized buffer instead of a full-frame one. epd7in3e.c is untouched -- it has no idea an overlay exists.
4 lines
388 B
CMake
4 lines
388 B
CMake
idf_component_register(SRCS main.c wifi_provisioning.c frame_client.c qr_onboarding.c status_screen.c epd_draw.c reset_button.c next_button.c manage_button.c manage_qr_overlay.c
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PRIV_REQUIRES esp_event nvs_flash esp_wifi esp_netif esp_http_server esp_http_client dns_server epd7in3e qrcode epaper_fonts esp_driver_gpio
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EMBED_FILES root.html)
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