mirror of
https://github.com/emsesp/EMS-ESP32.git
synced 2025-12-07 08:19:52 +03:00
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/*
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* EMS-ESP - https://github.com/proddy/EMS-ESP
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* Copyright 2019 Paul Derbyshire
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*
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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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*
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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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*
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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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/*
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* ESP32 UART port by @ArwedL and improved by @MichaelDvP. See https://github.com/proddy/EMS-ESP/issues/380
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*/
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#if defined(ESP32)
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#ifndef EMSESP_EMSUART_H
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#define EMSESP_EMSUART_H
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#include <Arduino.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/ringbuf.h"
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#include "freertos/queue.h"
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#include <driver/uart.h>
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#define EMS_MAXBUFFERSIZE 33 // max size of the buffer. EMS packets are max 32 bytes, plus extra for BRK
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#define EMSUART_UART UART_NUM_2 // on the ESP32 we're using UART2
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#define EMS_UART UART2 // for intr setting
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#define EMSUART_BAUD 9600 // uart baud rate for the EMS circuit
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#define EMSUART_BIT_TIME 104 // bit time @9600 baud
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#define EMS_TXMODE_DEFAULT 1
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#define EMS_TXMODE_EMSPLUS 2
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#define EMS_TXMODE_HT3 3
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#define EMS_TXMODE_NEW 4 // for michael's testing
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// customize the GPIO pins for RX and TX here
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#ifdef WEMOS_D1_32
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#define EMSUART_RXPIN 23 // 17 is UART2 RX. Use 23 for D7 on a Wemos D1-32 mini for backwards compatabilty
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#define EMSUART_TXPIN 5 // 16 is UART2 TX. Use 5 for D8 on a Wemos D1-32 mini for backwards compatabilty
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#else
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#define EMSUART_RXPIN 17 // 17 is UART2 RX. Use 23 for D7 on a Wemos D1-32 mini for backwards compatabilty
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#define EMSUART_TXPIN 16 // 16 is UART2 TX. Use 5 for D8 on a Wemos D1-32 mini for backwards compatabilty
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#endif
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namespace emsesp {
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#define EMS_TX_STATUS_OK 1
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#define EMS_TX_STATUS_ERROR 0
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class EMSuart {
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public:
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EMSuart() = default;
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~EMSuart() = default;
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static void start(uint8_t tx_mode);
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static void send_poll(uint8_t data);
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static void stop();
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static void restart();
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static uint16_t transmit(uint8_t * buf, uint8_t len);
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private:
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static void emsuart_recvTask(void * para);
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static void IRAM_ATTR emsuart_rx_intr_handler(void * para);
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static void IRAM_ATTR emsuart_tx_timer_intr_handler();
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};
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} // namespace emsesp
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#endif
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#endif
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