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Simplify upload to direct SD writes with enhanced diagnostics

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Major architectural changes:
- Remove complex 64KB circular buffer (was adding overhead)
- Use simple direct SD writes (ESP32 WebServer already buffers)
- Add detailed timing diagnostics (write count, avg write time, % time in writes)

WiFi optimizations enhanced:
- Explicit WIFI_PS_NONE power save disable
- Force 802.11b/g/n protocol for better throughput
- Log actual TX power and RSSI for debugging

The circular buffer was copying data twice (WiFi→buffer→SD) and adding
complexity. Direct writes let the WebServer's internal buffering work
optimally. Diagnostics will help identify if SD card speed is the bottleneck.
This commit is contained in:
Claude
2026-01-10 21:05:58 +00:00
parent 953df1f3f9
commit 278d4b5d68
3 changed files with 56 additions and 185 deletions
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25
src/activities/network/CrossPointWebServerActivity.cpp
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@@ -35,17 +35,38 @@ constexpr UBaseType_t WEBSERVER_TASK_PRIORITY = 5; // Higher priority for res
constexpr int HANDLE_CLIENT_ITERATIONS = 50;
} // namespace
// Apply WiFi performance optimizations
// Apply WiFi performance optimizations for maximum upload throughput
static void applyWiFiOptimizations() {
// Disable WiFi sleep for maximum throughput
WiFi.setSleep(false);
esp_wifi_set_ps(WIFI_PS_NONE); // Explicitly disable power save
// Set maximum TX power (different for ESP32 variants)
// ESP32-C3: max 21dBm, ESP32: max 20.5dBm
// Using 78 (19.5dBm) which is safe for all variants
esp_wifi_set_max_tx_power(78);
Serial.printf("[%lu] [WEBACT] WiFi optimizations applied: sleep disabled, TX power maximized\n", millis());
// Configure WiFi for maximum throughput
// Note: These settings may not all be available on ESP32-C3
wifi_config_t conf;
if (esp_wifi_get_config(WIFI_IF_STA, &conf) == ESP_OK) {
// Log current settings
Serial.printf("[%lu] [WEBACT] WiFi SSID: %s, channel: listening\n", millis(), conf.sta.ssid);
}
// Set WiFi protocol to use 802.11n for better throughput
// WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N
esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
// Get and log WiFi info for debugging
int8_t txPower = 0;
esp_wifi_get_max_tx_power(&txPower);
Serial.printf("[%lu] [WEBACT] WiFi optimizations applied:\n", millis());
Serial.printf("[%lu] [WEBACT] - Power save: DISABLED\n", millis());
Serial.printf("[%lu] [WEBACT] - TX power: %d (0.25dBm units = %.2f dBm)\n", millis(), txPower, txPower * 0.25f);
Serial.printf("[%lu] [WEBACT] - Protocol: 802.11b/g/n\n", millis());
Serial.printf("[%lu] [WEBACT] - RSSI: %d dBm\n", millis(), WiFi.RSSI());
}
void CrossPointWebServerActivity::taskTrampoline(void* param) {