testing
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LICENSE
4
LICENSE
@ -20,9 +20,9 @@ Parts of the source files in this repository are made available under different
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listed below. Refer to each individual source file for more details.
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------------------------------------------------------------------------------------------------
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wifisniffer.cpp
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wifiscan.cpp
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Parts of wifisniffer.cpp were derived or taken from
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Prior art was used for wifiscan.cpp and taken from
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* Copyright (c) 2017, Łukasz Marcin Podkalicki <lpodkalicki@gmail.com>
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* ESP32/016 WiFi Sniffer
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@ -6,13 +6,13 @@
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; ---> SELECT TARGET PLATFORM HERE! <---
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[platformio]
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env_default = generic
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;env_default = generic
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;env_default = ebox
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;env_default = heltec
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;env_default = ttgov1
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;env_default = ttgov2
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;env_default = ttgov21old
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;env_default = ttgov21new
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env_default = ttgov21new
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;env_default = ttgobeam
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;env_default = lopy
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;env_default = lopy4
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@ -26,10 +26,10 @@ description = Paxcounter is a proof-of-concept ESP32 device for metering passeng
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[common]
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; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
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release_version = 1.5.6
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release_version = 1.5.7
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; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
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; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
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debug_level = 0
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debug_level = 3
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; UPLOAD MODE: select esptool to flash via USB/UART, select custom to upload to cloud for OTA
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upload_protocol = esptool
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;upload_protocol = custom
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@ -13,7 +13,6 @@ void IRAM_ATTR ButtonIRQ() {
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}
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void readButton() {
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if (ButtonPressedIRQ) {
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portENTER_CRITICAL(&timerMux);
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ButtonPressedIRQ = 0;
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portEXIT_CRITICAL(&timerMux);
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@ -21,6 +20,5 @@ void readButton() {
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payload.reset();
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payload.addButton(0x01);
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SendData(BUTTONPORT);
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}
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}
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#endif
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@ -91,6 +91,10 @@ void init_display(const char *Productname, const char *Version) {
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void refreshtheDisplay() {
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portENTER_CRITICAL(&timerMux);
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DisplayTimerIRQ = 0;
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portEXIT_CRITICAL(&timerMux);
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// set display on/off according to current device configuration
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if (DisplayState != cfg.screenon) {
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DisplayState = cfg.screenon;
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@ -114,7 +118,8 @@ void refreshtheDisplay() {
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// update Battery status (line 2)
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#ifdef HAS_BATTERY_PROBE
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u8x8.setCursor(0, 2);
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u8x8.printf(batt_voltage > 4000 ? "B:USB " : "B:%.1fV", batt_voltage / 1000.0);
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u8x8.printf(batt_voltage > 4000 ? "B:USB " : "B:%.1fV",
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batt_voltage / 1000.0);
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#endif
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// update GPS status (line 2)
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@ -191,13 +196,4 @@ void IRAM_ATTR DisplayIRQ() {
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portEXIT_CRITICAL_ISR(&timerMux);
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}
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void updateDisplay() {
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if (DisplayTimerIRQ) {
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portENTER_CRITICAL(&timerMux);
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DisplayTimerIRQ = 0;
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portEXIT_CRITICAL(&timerMux);
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refreshtheDisplay();
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}
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}
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#endif // HAS_DISPLAY
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@ -9,7 +9,6 @@ extern HAS_DISPLAY u8x8;
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void init_display(const char *Productname, const char *Version);
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void refreshtheDisplay(void);
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void DisplayKey(const uint8_t *key, uint8_t len, bool lsb);
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void updateDisplay(void);
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void DisplayIRQ(void);
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#endif
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@ -53,6 +53,8 @@ extern volatile uint8_t SendCycleTimerIRQ, HomeCycleIRQ, DisplayTimerIRQ,
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extern std::array<uint64_t, 0xff>::iterator it;
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extern std::array<uint64_t, 0xff> beacons;
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extern SemaphoreHandle_t xWifiChannelSwitchSemaphore;
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#ifdef HAS_GPS
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extern TaskHandle_t GpsTask;
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#include "gps.h"
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@ -247,7 +247,9 @@ void lorawan_loop(void *pvParameters) {
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configASSERT(((uint32_t)pvParameters) == 1); // FreeRTOS check
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while (1) {
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os_runloop_once(); // execute LMIC jobs
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//vTaskSuspendAll();
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os_runloop_once(); // execute LMIC jobs
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//xTaskResumeAll();
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vTaskDelay(2 / portTICK_PERIOD_MS); // yield to CPU
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}
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}
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38
src/main.cpp
38
src/main.cpp
@ -32,6 +32,7 @@ gpsloop 0 2 read data from GPS over serial or i2c
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IDLE 1 0 Arduino loop() -> used for LED switching
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loraloop 1 1 runs the LMIC stack
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statemachine 1 3 switches application process logic
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wifiloop 0 4 rotates wifi channels
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ESP32 hardware timers
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==========================
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@ -58,7 +59,9 @@ hw_timer_t *channelSwitch, *displaytimer, *sendCycle, *homeCycle;
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uint8_t volatile ButtonPressedIRQ = 0, ChannelTimerIRQ = 0,
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SendCycleTimerIRQ = 0, DisplayTimerIRQ = 0, HomeCycleIRQ = 0;
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TaskHandle_t StateTask = NULL;
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TaskHandle_t stateMachineTask = NULL;
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SemaphoreHandle_t xWifiChannelSwitchSemaphore;
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// RTos send queues for payload transmit
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#ifdef HAS_LORA
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@ -245,11 +248,6 @@ void setup() {
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timerAlarmEnable(displaytimer);
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#endif
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// setup channel rotation trigger IRQ using esp32 hardware timer 1
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channelSwitch = timerBegin(1, 800, true);
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timerAttachInterrupt(channelSwitch, &ChannelSwitchIRQ, true);
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timerAlarmWrite(channelSwitch, cfg.wifichancycle * 1000, true);
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// setup send cycle trigger IRQ using esp32 hardware timer 2
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sendCycle = timerBegin(2, 8000, true);
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timerAttachInterrupt(sendCycle, &SendCycleIRQ, true);
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@ -260,6 +258,12 @@ void setup() {
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timerAttachInterrupt(homeCycle, &homeCycleIRQ, true);
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timerAlarmWrite(homeCycle, HOMECYCLE * 10000, true);
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// setup channel rotation trigger IRQ using esp32 hardware timer 1
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xWifiChannelSwitchSemaphore = xSemaphoreCreateBinary();
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channelSwitch = timerBegin(1, 800, true);
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timerAttachInterrupt(channelSwitch, &ChannelSwitchIRQ, true);
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timerAlarmWrite(channelSwitch, cfg.wifichancycle * 1000, true);
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// enable timers
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// caution, see: https://github.com/espressif/arduino-esp32/issues/1313
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yield();
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@ -326,18 +330,30 @@ void setup() {
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// start wifi in monitor mode and start channel rotation task on core 0
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ESP_LOGI(TAG, "Starting Wifi...");
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// esp_event_loop_init(NULL, NULL);
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// ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL));
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wifi_sniffer_init();
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// initialize salt value using esp_random() called by random() in
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// arduino-esp32 core. Note: do this *after* wifi has started, since
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// function gets it's seed from RF noise
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get_salt(); // get new 16bit for salting hashes
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// start wifi channel rotation task
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xTaskCreatePinnedToCore(switchWifiChannel, /* task function */
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"wifiloop", /* name of task */
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3048, /* stack size of task */
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NULL, /* parameter of the task */
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4, /* priority of the task */
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NULL, /* task handle*/
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0); /* CPU core */
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// start state machine
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ESP_LOGI(TAG, "Starting Statemachine...");
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xTaskCreatePinnedToCore(stateMachine, "stateloop", 2048, (void *)1, 3,
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&StateTask, 1);
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xTaskCreatePinnedToCore(stateMachine, /* task function */
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"stateloop", /* name of task */
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2048, /* stack size of task */
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(void *)1, /* parameter of the task */
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3, /* priority of the task */
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&stateMachineTask, /* task handle */
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1); /* CPU core */
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} // setup()
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@ -350,4 +366,4 @@ void loop() {
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// give yield to CPU
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vTaskDelay(2 / portTICK_PERIOD_MS);
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}
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}
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@ -10,16 +10,15 @@ void stateMachine(void *pvParameters) {
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while (1) {
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#ifdef HAS_BUTTON
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readButton();
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if (ButtonPressedIRQ)
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readButton();
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#endif
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#ifdef HAS_DISPLAY
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updateDisplay();
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if (DisplayTimerIRQ)
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refreshtheDisplay();
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#endif
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// check wifi scan cycle and if due rotate channel
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if (ChannelTimerIRQ)
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switchWifiChannel(channel);
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// check housekeeping cycle and if due do the work
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if (HomeCycleIRQ)
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doHousekeeping();
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#include "cyclic.h"
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void stateMachine(void *pvParameters);
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void stateMachineInit();
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#endif
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@ -30,7 +30,11 @@ void wifi_sniffer_init(void) {
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cfg.nvs_enable = 0; // we don't need any wifi settings from NVRAM
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wifi_promiscuous_filter_t filter = {
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.filter_mask = WIFI_PROMIS_FILTER_MASK_MGMT}; // we need only MGMT frames
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ESP_ERROR_CHECK(esp_wifi_init(&cfg)); // configure Wifi with cfg
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// esp_event_loop_init(NULL, NULL);
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// ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL));
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ESP_ERROR_CHECK(esp_wifi_init(&cfg)); // configure Wifi with cfg
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ESP_ERROR_CHECK(
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esp_wifi_set_country(&wifi_country)); // set locales for RF and channels
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ESP_ERROR_CHECK(
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@ -43,20 +47,22 @@ void wifi_sniffer_init(void) {
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ESP_ERROR_CHECK(esp_wifi_set_promiscuous(true)); // now switch on monitor mode
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}
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// Wifi channel rotation
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void switchWifiChannel(uint8_t volatile &ch) {
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portENTER_CRITICAL(&timerMux);
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ChannelTimerIRQ = 0;
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portEXIT_CRITICAL(&timerMux);
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// rotates variable channel 1..WIFI_CHANNEL_MAX
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ch = (ch % WIFI_CHANNEL_MAX) + 1;
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esp_wifi_set_channel(ch, WIFI_SECOND_CHAN_NONE);
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ESP_LOGD(TAG, "Wifi set channel %d", ch);
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// IRQ Handler
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void ChannelSwitchIRQ() {
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BaseType_t xHigherPriorityTaskWoken = pdFALSE;
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// unblock wifi channel rotation task
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xSemaphoreGiveFromISR(xWifiChannelSwitchSemaphore, &xHigherPriorityTaskWoken);
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}
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// IRQ handler
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void IRAM_ATTR ChannelSwitchIRQ() {
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portENTER_CRITICAL(&timerMux);
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ChannelTimerIRQ++;
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portEXIT_CRITICAL(&timerMux);
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}
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// Wifi channel rotation task
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void switchWifiChannel(void * parameter) {
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while (1) {
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// task in block state to wait for channel switch timer interrupt event
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xSemaphoreTake(xWifiChannelSwitchSemaphore, portMAX_DELAY);
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// rotates variable channel 1..WIFI_CHANNEL_MAX
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channel = (channel % WIFI_CHANNEL_MAX) + 1;
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esp_wifi_set_channel(channel, WIFI_SECOND_CHAN_NONE);
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ESP_LOGD(TAG, "Wifi set channel %d", channel);
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}
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vTaskDelete(NULL);
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}
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@ -28,6 +28,6 @@ typedef struct {
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void wifi_sniffer_init(void);
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void wifi_sniffer_packet_handler(void *buff, wifi_promiscuous_pkt_type_t type);
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void ChannelSwitchIRQ(void);
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void switchWifiChannel(uint8_t volatile &ch);
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void switchWifiChannel(void * parameter);
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#endif
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