mirror of https://github.com/arendst/Tasmota.git
111 lines
3.1 KiB
C++
111 lines
3.1 KiB
C++
/*
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xsns_64_hrxl.ino - MaxBotix HRXL serial interface
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Copyright (C) 2021 Jon Little
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef USE_HRXL
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/*********************************************************************************************\
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* MaxBotix HRXL-MaxSonar ultrasonic range finders
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* Source: https://www.maxbotix.com/documents/HRXL-MaxSonar-WR_Datasheet.pdf
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*
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* Hardware Serial will be selected if GPIO1 = [HRXL Rx]
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\*********************************************************************************************/
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#define XSNS_64 64
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#define HRXL_READ_TIMEOUT 400 // us; enough for 6 bytes@9600bps
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#include <TasmotaSerial.h>
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TasmotaSerial *HRXLSerial = nullptr;
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uint32_t hrxl_distance_mm = 0; // distance, mm
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/*********************************************************************************************/
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void HRXLInit(void) {
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if (PinUsed(GPIO_HRXL_RX)) {
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HRXLSerial = new TasmotaSerial(Pin(GPIO_HRXL_RX), -1, 1);
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if (HRXLSerial->begin(9600)) {
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if (HRXLSerial->hardwareSerial()) {
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ClaimSerial();
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}
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#ifdef ESP32
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AddLog(LOG_LEVEL_DEBUG, PSTR("HRX: Serial UART%d"), HRXLSerial->getUart());
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#endif
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HRXLSerial->setTimeout(HRXL_READ_TIMEOUT);
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}
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}
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}
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void HRXLEverySecond(void) {
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int num_read = 0;
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int sum = 0;
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while (HRXLSerial->available() > 5) {
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if (HRXLSerial->read() != 'R') {
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continue;
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}
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int d = HRXLSerial->parseInt();
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if (d >= 30 && d <= 5000) {
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sum += d;
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num_read++;
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}
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}
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if (num_read > 1) {
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hrxl_distance_mm = int(sum / num_read); // mm
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}
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}
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void HRXLShow(bool json) {
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char types[5] = "HRXL";
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float distance = (float)hrxl_distance_mm / 10; // cm
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if (json) {
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ResponseAppend_P(PSTR(",\"%s\":{\"" D_JSON_DISTANCE "\":%1_f}"), types, &distance);
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#ifdef USE_WEBSERVER
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} else {
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WSContentSend_PD(HTTP_SNS_F_DISTANCE_CM, types, &distance);
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#endif // USE_WEBSERVER
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}
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}
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xsns64(uint32_t function) {
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if (FUNC_INIT == function) {
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HRXLInit();
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}
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else if (HRXLSerial) {
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switch (function) {
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case FUNC_EVERY_SECOND:
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HRXLEverySecond();
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break;
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case FUNC_JSON_APPEND:
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HRXLShow(1);
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break;
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#ifdef USE_WEBSERVER
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case FUNC_WEB_SENSOR:
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HRXLShow(0);
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break;
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#endif // USE_WEBSERVER
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}
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}
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return false;
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}
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#endif // USE_HRXL
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