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feat(ui-lvgl): on-device map download over WiFi

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The map's download button fetches the visible area (overview levels up to
a chosen zoom) into /sdcard/maps from OpenTopoMap or maps/source.txt,
skipping tiles already on the card and rejecting placeholder answers.
Settings > WiFi stores the network in NVS (with scan); WiFi is on only
while a download runs. HTTP runs on a worker task on core 0; the popup
shows link, internal heap and the last TLS/HTTP error.

Internal RAM was the blocker (~13 KB free with WiFi + Bluedroid): the L2
LVGL env now allocates the_mesh in PSRAM (MESH_IN_PSRAM, static RAM
210 -> 87 KB) and mbedTLS allocates from PSRAM. Confirmed on hardware.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-09-25 11:26:44 +02:00
co-authored by Claude Opus 5.5
parent 64321bf12b
commit 0fa7966280
12 changed files with 1030 additions and 9 deletions
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examples/companion_radio/ui-lvgl/UITask.cpp
+18 -2
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@@ -140,6 +140,7 @@ void UITask::loop() {
_core->loop();
drainCoreEvents();
mapDownloadTick(); // a map download keeps running on any screen, and asleep
if (!_asleep) {
if ((int32_t)(millis() - _next_status_ms) >= 0) {
@@ -159,6 +160,7 @@ void UITask::loop() {
}
}
if (_screen == SCR_MAP) mapLoop();
if (_screen == SCR_WIFI) pollWifiScan();
if (_screen == SCR_THREAD && (int32_t)(millis() - _next_thread_check_ms) >= 0) {
_next_thread_check_ms = millis() + 500;
uint32_t sig = threadSignature();
@@ -344,7 +346,10 @@ lv_obj_t* UITask::newScreen(const char* title, bool with_back) {
_nearby_list = _nearby_status = _nearby_sort_lbl = _nearby_chips = nullptr;
_node_info = _node_ping = _node_delete_lbl = nullptr;
_scan_overlay = _scan_list = _scan_status = nullptr; // the popup went with the old screen
_map_area = _map_marks = _map_me = _map_zoom_lbl = _map_hint = nullptr;
_map_area = _map_marks = _map_me = _map_zoom_lbl = _map_hint = _map_dl_pill = nullptr;
_dl_overlay = _dl_info = _dl_zoom_lbl = _dl_start_lbl = nullptr;
_wifi_ssid = _wifi_pass = _wifi_kb = _wifi_list = _wifi_status = nullptr;
_wifi_scanning = false;
for (lv_obj_t*& t : _map_tiles) t = nullptr;
lv_obj_t* prev = lv_screen_active();
lv_obj_t* scr = lv_obj_create(NULL);
@@ -404,7 +409,11 @@ void UITask::back() {
buildNearby();
if (_node_from_scan) showScanPopup();
break;
case SCR_MAP: showHome(); break;
case SCR_MAP:
if (_dl_overlay) mapDownloadClose();
else showHome();
break;
case SCR_WIFI: if (_wifi_from_map) showMap(); else showSettings(); break;
default: break;
}
}
@@ -1054,6 +1063,7 @@ void UITask::nodeAction(uint8_t action) {
}
#include "MapScreen.h"
#include "WifiScreen.h"
// ── Conversation ──────────────────────────────────────────────────────────────
@@ -1370,8 +1380,14 @@ void UITask::showSettings() {
buildSettings();
}
static void onOpenWifi(lv_event_t* e) { (void)e; s_ui->showWifi(false); }
void UITask::buildSettings() {
lv_obj_t* body = newScreen("Settings", true);
sectionTitle(body, "CONNECTIVITY");
char ssid[33], pass[65];
bool have = lvport::loadWifi(ssid, sizeof(ssid), pass, sizeof(pass));
listRow(body, LV_SYMBOL_WIFI " WiFi", have ? ssid : "Not set (for map downloads)", onOpenWifi, NULL);
sectionTitle(body, "KEYBOARD");
uint8_t main_a = _prefs ? _prefs->keyboard_main_alphabet : 0;
uint8_t alt_a = _prefs ? _prefs->keyboard_alt_alphabet : 0;