v1.7..152: DCF77 fixes (experimental)
This commit is contained in:
Klaus K Wilting
parent
39e2df7a05
commit
17cd82da68
@ -15,10 +15,6 @@
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#include "rtctime.h"
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#endif
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#ifdef HAS_DCF77
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#include "dcf77.h"
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#endif
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void doHousekeeping(void);
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uint64_t uptime(void);
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void reset_counters(void);
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@ -102,6 +102,7 @@ extern uint16_t volatile macs_total, macs_wifi, macs_ble,
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batt_voltage; // display values
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extern hw_timer_t *sendCycle, *displaytimer;
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extern SemaphoreHandle_t I2Caccess;
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extern bool volatile BitsPending;
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extern std::set<uint16_t, std::less<uint16_t>, Mallocator<uint16_t>> macs;
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extern std::array<uint64_t, 0xff>::iterator it;
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@ -6,7 +6,7 @@
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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 = eboxtube
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;env_default = heltec
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@ -24,16 +24,16 @@
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;env_default = lolin32lora
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;env_default = lolin32lite
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;env_default = octopus32
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env_default = ebox, eboxtube, heltec, ttgobeam, lopy4, lopy, ttgov21old, ttgov21new, ttgofox
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;env_default = ebox, eboxtube, heltec, ttgobeam, lopy4, lopy, ttgov21old, ttgov21new, ttgofox
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;
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description = Paxcounter is a proof-of-concept ESP32 device for metering passenger flows in realtime. It counts how many mobile devices are around.
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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 = 1.7.143
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release_version = 1.7.152
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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 = 3
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debug_level = 0
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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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@ -45,9 +45,9 @@ monitor_speed = 115200
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lib_deps_lora =
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MCCI LoRaWAN LMIC library@^2.3.1
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lib_deps_display =
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U8g2@>=2.25.5
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U8g2@>=2.25.7
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lib_deps_rgbled =
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SmartLeds@>=1.1.3
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SmartLeds@>=1.1.5
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lib_deps_gps =
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TinyGPSPlus@>=1.0.2
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lib_deps_rtc =
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@ -83,11 +83,6 @@ void doHousekeeping() {
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bme_status.temperature, bme_status.iaq, bme_status.iaq_accuracy);
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#endif
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// generate DCF77 timeframes
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#ifdef HAS_DCF77
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sendDCF77();
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#endif
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// check free heap memory
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if (ESP.getMinFreeHeap() <= MEM_LOW) {
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ESP_LOGI(TAG,
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209
src/dcf77.cpp
209
src/dcf77.cpp
@ -1,13 +1,10 @@
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//
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// source:
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// https://www.elektormagazine.com/labs/dcf77-emulator-with-esp8266-elektor-labs-version-150713
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//
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/*
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Simulate a DCF77 radio receiver
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Emit a complete three minute pulses train from the GPIO output
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the train is preceded by a single pulse and the lacking 59th pulse to allow
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some clock model syncronization of the beginning frame. After the three pulses
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train one more single pulse is sent to safely close the frame
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// Emulate a DCF77 radio receiver
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//
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// parts of this code werde adapted from source:
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//
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https://www.elektormagazine.com/labs/dcf77-emulator-with-esp8266-elektor-labs-version-150713
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//
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*/
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#if defined HAS_DCF77
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@ -18,11 +15,9 @@
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static const char TAG[] = "main";
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TaskHandle_t DCF77Task;
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QueueHandle_t DCFSendQueue;
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hw_timer_t *dcfCycle = NULL;
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#define DCF77_FRAME_SIZE 60
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#define DCF_FRAME_QUEUE_SIZE (HOMECYCLE / 60 + 1)
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// array of dcf pulses for three minutes
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uint8_t DCFtimeframe[DCF77_FRAME_SIZE];
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@ -30,84 +25,31 @@ uint8_t DCFtimeframe[DCF77_FRAME_SIZE];
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// initialize and configure DCF77 output
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int dcf77_init(void) {
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DCFSendQueue = xQueueCreate(DCF_FRAME_QUEUE_SIZE,
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sizeof(DCFtimeframe) / sizeof(DCFtimeframe[0]));
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if (!DCFSendQueue) {
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ESP_LOGE(TAG, "Could not create DCF77 send queue. Aborting.");
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return 0; // failure
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}
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ESP_LOGI(TAG, "DCF77 send queue created, size %d Bytes",
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DCF_FRAME_QUEUE_SIZE * sizeof(DCFtimeframe) /
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sizeof(DCFtimeframe[0]));
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pinMode(HAS_DCF77, OUTPUT);
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digitalWrite(HAS_DCF77, LOW);
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digitalWrite(HAS_DCF77, HIGH);
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xTaskCreatePinnedToCore(dcf77_loop, // task function
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"dcf77loop", // 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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&DCF77Task, // task handle
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0); // CPU core
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assert(DCF77Task); // has dcf77 task started?
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// setup 100ms clock signal for DCF77 generator using esp32 hardware timer 1
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ESP_LOGD(TAG, "Starting DCF pulse...");
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dcfCycle = timerBegin(1, 8000, true); // set 80 MHz prescaler to 1/10000 sec
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timerAttachInterrupt(dcfCycle, &DCF77IRQ, true);
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timerAlarmWrite(dcfCycle, 2000, true); // 100ms cycle
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timerAlarmEnable(dcfCycle);
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xTaskNotify(DCF77Task, 0, eNoAction);
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return 1; // success
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} // ifdcf77_init
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// called every 100msec for DCF77 output
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void DCF_Ticker() {
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static uint8_t DCF_Frame[DCF77_FRAME_SIZE];
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static uint8_t bit = 0;
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static uint8_t pulse = 0;
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static bool BitsPending = false;
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while (BitsPending) {
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switch (pulse++) {
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case 0: // start of second -> start of timeframe for logic signal
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if (DCF_Frame[bit] != dcf_off)
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digitalWrite(HAS_DCF77, LOW);
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return;
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case 1: // 100ms after start of second -> end of timeframe for logic 0
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if (DCF_Frame[bit] == dcf_zero)
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digitalWrite(HAS_DCF77, HIGH);
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return;
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case 2: // 200ms after start of second -> end of timeframe for logic signal
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digitalWrite(HAS_DCF77, HIGH);
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return;
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case 9: // last pulse before next second starts
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pulse = 0;
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if (bit++ != DCF77_FRAME_SIZE)
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return;
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else { // last pulse of DCF77 frame (59th second)
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bit = 0;
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BitsPending = false;
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};
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break;
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}; // switch
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}; // while
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// get next frame to send from queue
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if (xQueueReceive(DCFSendQueue, &DCF_Frame, (TickType_t)0) == pdTRUE)
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BitsPending = true;
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} // DCF_Ticker()
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void dcf77_loop(void *pvParameters) {
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configASSERT(((uint32_t)pvParameters) == 1); // FreeRTOS check
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// task remains in blocked state until it is notified by isr
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for (;;) {
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xTaskNotifyWait(
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0x00, // don't clear any bits on entry
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ULONG_MAX, // clear all bits on exit
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NULL,
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portMAX_DELAY); // wait forever (missing error handling here...)
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DCF_Ticker();
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}
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vTaskDelete(DCF77Task); // shoud never be reached
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} // dcf77_loop()
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uint8_t dec2bcd(uint8_t dec, uint8_t startpos, uint8_t endpos,
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uint8_t pArray[]) {
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@ -123,7 +65,7 @@ uint8_t dec2bcd(uint8_t dec, uint8_t startpos, uint8_t endpos,
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return parity;
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}
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void enqueueTimeframe(time_t t) {
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void generateTimeframe(time_t t) {
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uint8_t ParityCount;
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@ -156,21 +98,7 @@ void enqueueTimeframe(time_t t) {
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// ENCODE TAIL (bit 59)
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DCFtimeframe[59] = dcf_off;
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// --> missing code here for switching second!
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/*
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In unregelmäßigen Zeitabständen muss eine Schaltsekunde eingefügt werden. Dies
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ist dadurch bedingt, dass sich die Erde nicht genau in 24 Stunden um sich
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selbst dreht. Auf die koordinierte Weltzeitskala UTC bezogen, wird diese
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Korrektur zum Ende der letzten Stunde des 31. Dezember oder 30. Juni
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vorgenommen. In Mitteleuropa muss die Schaltsekunde daher am 1. Januar um 1.00
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Uhr MEZ oder am 1.Juli um 2.00 MESZ eingeschoben werden. Zu den genannten
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Zeiten werden daher 61 Sekunden gesendet.
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*/
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// post generated DCFtimeframe data to DCF SendQueue
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if (xQueueSendToBack(DCFSendQueue, (void *)&DCFtimeframe[0], (TickType_t)0) !=
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pdPASS)
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ESP_LOGE(TAG, "Failed to send DCF data");
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// !! missing code here for leap second !!
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// for debug: print the DCF77 frame buffer
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char out[DCF77_FRAME_SIZE + 1];
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@ -179,41 +107,80 @@ void enqueueTimeframe(time_t t) {
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out[i] = DCFtimeframe[i] + '0'; // convert int digit to printable ascii
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}
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out[DCF77_FRAME_SIZE] = '\0'; // string termination char
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ESP_LOGD(TAG, "DCF=%s", out);
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ESP_LOGD(TAG, "DCF Timeframe = %s", out);
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}
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void sendDCF77() {
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// called every 100msec by hardware time
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void DCF_Out() {
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time_t t = now();
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static uint8_t bit = 0;
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static uint8_t pulse = 0;
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/*
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if (second(t) > 56) {
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delay(30000);
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if (!BitsPending) {
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// prepare next frame to send
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generateTimeframe(now());
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BitsPending = true;
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// wait until next minute, then kick off hardware timer and first DCF pulse
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do {
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delay(2);
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} while (second());
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}
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// ticker out current frame
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while (BitsPending) {
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switch (pulse++) {
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case 0: // start of second -> start of timeframe for logic signal
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if (DCFtimeframe[bit] != dcf_off)
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digitalWrite(HAS_DCF77, LOW);
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return;
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}
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*/
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// enqueue DCF timeframes for each i minute
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for (uint8_t i = 0; i < DCF_FRAME_QUEUE_SIZE; i++)
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enqueueTimeframe(t + i * 60);
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case 1: // 100ms after start of second -> end of timeframe for logic 0
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if (DCFtimeframe[bit] == dcf_zero)
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digitalWrite(HAS_DCF77, HIGH);
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return;
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/*
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// how many to the minute end ?
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// don't forget that we begin transmission at second 58
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delay((58 - second(t)) * 1000);
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case 2: // 200ms after start of second -> end of timeframe for logic 1
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digitalWrite(HAS_DCF77, HIGH);
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return;
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// three minutes are needed to transmit all the packet
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// then wait more 30 secs to locate safely at the half of minute
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// NB 150+60=210sec, 60secs are lost from main routine
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delay(150000);
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*/
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case 9: // last pulse before next second starts
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pulse = 0;
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if (bit++ != DCF77_FRAME_SIZE)
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return;
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else { // end of DCF77 frame (59th second)
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bit = 0;
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BitsPending = false;
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};
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break;
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} // Ende ReadAndDecodeTime()
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}; // switch
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}; // while
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} // DCF_Out()
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// interrupt service routine triggered each 100ms by ESP32 hardware timer
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void IRAM_ATTR DCF77IRQ() {
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xTaskNotifyFromISR(DCF77Task, xTaskGetTickCountFromISR(), eSetBits, NULL);
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xTaskNotifyFromISR(DCF77Task, 0, eNoAction, NULL);
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portYIELD_FROM_ISR();
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}
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void dcf77_loop(void *pvParameters) {
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configASSERT(((uint32_t)pvParameters) == 1); // FreeRTOS check
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// task remains in blocked state until it is notified by isr
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for (;;) {
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xTaskNotifyWait(
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0x00, // don't clear any bits on entry
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ULONG_MAX, // clear all bits on exit
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NULL,
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portMAX_DELAY); // wait forever (missing error handling here...)
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DCF_Out();
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}
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BitsPending = false; // stop blink in display
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vTaskDelete(DCF77Task); // shoud never be reached
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} // dcf77_loop()
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#endif // HAS_DCF77
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@ -145,14 +145,14 @@ void refreshtheDisplay() {
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uint8_t msgWaiting;
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char buff[16]; // 16 chars line buffer
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#if defined HAS_RTC || defined HAS_GPS
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#if (defined HAS_DCF77) || (defined HAS_IF482)
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const char timeNosyncSymbol = '?';
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#if defined HAS_IF482 || defined HAS_DCF77
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#if (defined HAS_IF482)
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const char timesyncSymbol = '+';
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#else
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const char timesyncSymbol = '*';
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#endif
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#endif // HAS_RTC
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#endif
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// update counter (lines 0-1)
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snprintf(
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@ -217,21 +217,20 @@ void refreshtheDisplay() {
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#ifdef HAS_LORA
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u8x8.setCursor(0, 6);
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#if (!defined HAS_RTC) && (!defined HAS_GPS)
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#if (!defined HAS_DCF77) && (!defined HAS_IF482)
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// update LoRa status display (line 6)
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u8x8.printf("%-16s", display_line6);
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#else // HAS_RTC or HAS_GPS
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#else // we want a time display instead LoRa status
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// update time/date display (line 6)
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time_t t = myTZ.toLocal(now());
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char timeState =
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timeStatus() == timeSet ? timesyncSymbol : timeNosyncSymbol;
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#ifdef RTC_INT // make timestatus symbol blinking if pps line
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if (second(t) % 2)
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// make timestatus symbol blinking if pps line
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if ((BitsPending) && (second(t) % 2))
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timeState = ' ';
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#endif // RTC_INT
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u8x8.printf("%02d:%02d:%02d%c %2d.%3s", hour(t), minute(t), second(t),
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timeState, day(t), printmonth[month(t)]);
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#endif // HAS_RTC
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#endif
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// update LMiC event display (line 7)
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u8x8.setCursor(0, 7);
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@ -103,7 +103,20 @@ int if482_init(void) {
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ESP_LOGE(TAG, "I2c bus busy - IF482 initialization error");
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return 0;
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}
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xTaskCreatePinnedToCore(if482_loop, // task function
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"if482loop", // 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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&IF482Task, // task handle
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0); // CPU core
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assert(IF482Task); // has if482loop task started?
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// setup external interupt for active low RTC INT pin
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pinMode(RTC_INT, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(RTC_INT), IF482IRQ, FALLING);
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return 1;
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} // if482_init
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@ -134,6 +147,8 @@ String if482Telegram(time_t tt) {
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month(t), day(t), weekday(t), hour(t), minute(t), second(t));
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snprintf(out, sizeof out, "O%cL%s\r", mon, buf);
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ESP_LOGD(TAG, "IF482 = %s", out);
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return out;
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}
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@ -152,6 +167,8 @@ void if482_loop(void *pvParameters) {
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do {
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tt = now();
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} while (t == tt);
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BitsPending = true; // start blink in display
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// take timestamp at moment of start of new second
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const TickType_t shotTime = xTaskGetTickCount() - startTime - timeOffset;
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@ -169,6 +186,7 @@ void if482_loop(void *pvParameters) {
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vTaskDelayUntil(&wakeTime, shotTime); // sets waketime to moment of shot
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IF482.print(if482Telegram(now() + 1));
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}
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BitsPending = false; // stop blink in display
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vTaskDelete(IF482Task); // shoud never be reached
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} // if482_loop()
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@ -34,7 +34,7 @@
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// faster or slower. This causes the transceiver to be earlier switched on,
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// so consuming more power. You may sharpen (reduce) this value if you are
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// limited on battery.
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#define CLOCK_ERROR_PROCENTAGE 30
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#define CLOCK_ERROR_PROCENTAGE 3
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// Set this to 1 to enable some basic debug output (using printf) about
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// RF settings used during transmission and reception. Set to 2 to
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43
src/main.cpp
43
src/main.cpp
@ -34,7 +34,7 @@ spiloop 0 2 reads/writes data on spi interface
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IDLE 0 0 ESP32 arduino scheduler -> runs wifi sniffer
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||||
looptask 1 1 arduino core -> runs the LMIC LoRa stack
|
||||
irqhandler 1 1 executes tasks triggered by irq
|
||||
irqhandler 1 1 executes tasks triggered by hw irq, see table below
|
||||
gpsloop 1 2 reads data from GPS via serial or i2c
|
||||
bmeloop 1 1 reads data from BME sensor via i2c
|
||||
IDLE 1 0 ESP32 arduino scheduler -> runs wifi channel rotator
|
||||
@ -44,7 +44,7 @@ Low priority numbers denote low priority tasks.
|
||||
Tasks using i2c bus all must have same priority, because using mutex semaphore
|
||||
(irqhandler, bmeloop)
|
||||
|
||||
ESP32 hardware timers
|
||||
ESP32 hardware irq timers
|
||||
================================
|
||||
0 triggers display refresh
|
||||
1 triggers DCF77 clock signal
|
||||
@ -65,6 +65,7 @@ char display_line6[16], display_line7[16]; // display buffers
|
||||
uint8_t volatile channel = 0; // channel rotation counter
|
||||
uint16_t volatile macs_total = 0, macs_wifi = 0, macs_ble = 0,
|
||||
batt_voltage = 0; // globals for display
|
||||
bool volatile BitsPending = false; // DCF77 or IF482 ticker indicator
|
||||
|
||||
hw_timer_t *sendCycle = NULL, *homeCycle = NULL;
|
||||
#ifdef HAS_DISPLAY
|
||||
@ -97,7 +98,7 @@ void setup() {
|
||||
char features[100] = "";
|
||||
|
||||
I2Caccess = xSemaphoreCreateMutex(); // for access management of i2c bus
|
||||
if ((I2Caccess) != NULL)
|
||||
if (I2Caccess)
|
||||
xSemaphoreGive((I2Caccess)); // Flag the i2c bus available for use
|
||||
|
||||
// disable brownout detection
|
||||
@ -334,7 +335,6 @@ void setup() {
|
||||
|
||||
#if defined HAS_DCF77
|
||||
strcat_P(features, " DCF77");
|
||||
assert(dcf77_init());
|
||||
#endif
|
||||
|
||||
#if defined HAS_IF482 && defined RTC_INT
|
||||
@ -417,37 +417,14 @@ void setup() {
|
||||
setSyncInterval(TIME_SYNC_INTERVAL_GPS * 60);
|
||||
#endif
|
||||
|
||||
#if defined HAS_IF482 && defined RTC_INT
|
||||
#if defined HAS_IF482 && defined DCF_77
|
||||
#error "You may define at most one of HAS_IF482 or DCF_77"
|
||||
#elif defined HAS_IF482 && defined RTC_INT
|
||||
ESP_LOGI(TAG, "Starting IF482 Generator...");
|
||||
xTaskCreatePinnedToCore(if482_loop, // task function
|
||||
"if482loop", // name of task
|
||||
2048, // stack size of task
|
||||
(void *)1, // parameter of the task
|
||||
3, // priority of the task
|
||||
&IF482Task, // task handle
|
||||
0); // CPU core
|
||||
|
||||
// setup external interupt for active low RTC INT pin
|
||||
assert(IF482Task != NULL); // has if482loop task started?
|
||||
attachInterrupt(digitalPinToInterrupt(RTC_INT), IF482IRQ, FALLING);
|
||||
#endif
|
||||
|
||||
#if defined HAS_DCF77
|
||||
assert(if482_init());
|
||||
#elif defined HAS_DCF77
|
||||
ESP_LOGI(TAG, "Starting DCF77 Generator...");
|
||||
xTaskCreatePinnedToCore(dcf77_loop, // task function
|
||||
"dcf77loop", // name of task
|
||||
2048, // stack size of task
|
||||
(void *)1, // parameter of the task
|
||||
3, // priority of the task
|
||||
&DCF77Task, // task handle
|
||||
0); // CPU core
|
||||
|
||||
// setup 100ms clock signal for DCF77 generator using esp32 hardware timer 1
|
||||
assert(DCF77Task != NULL); // has dcf77 task started?
|
||||
dcfCycle = timerBegin(1, 8000, true);
|
||||
timerAttachInterrupt(dcfCycle, &DCF77IRQ, true);
|
||||
timerAlarmWrite(dcfCycle, 1000, true);
|
||||
timerAlarmEnable(dcfCycle);
|
||||
assert(dcf77_init());
|
||||
#endif
|
||||
|
||||
} // setup()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user