mirror of
https://github.com/emsesp/EMS-ESP32.git
synced 2025-12-06 15:59:52 +03:00
87 lines
3.0 KiB
C++
87 lines
3.0 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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#ifndef EMSESP_EMSUART_H
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#define EMSESP_EMSUART_H
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#include <Arduino.h>
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#include <user_interface.h>
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#define EMSUART_UART 0 // UART 0
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#define EMSUART_CONFIG 0x1C // 8N1 (8 bits, no stop bits, 1 parity)
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#define EMSUART_BAUD 9600 // uart baud rate for the EMS circuit
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#define EMS_MAXBUFFERS 3 // buffers for circular filling to avoid collisions
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#define EMS_MAXBUFFERSIZE 33 // max size of the buffer. EMS packets are max 32 bytes, plus extra 2 for BRKs
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#define EMSUART_recvTaskPrio 1 // 0, 1 or 2. 0 being the lowest
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#define EMSUART_recvTaskQueueLen 10 // number of queued Rx triggers
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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
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// LEGACY
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#define EMSUART_BIT_TIME 104 // bit time @9600 baud
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#define EMSUART_TX_BRK_WAIT 2070 // the BRK from Boiler master is roughly 1.039ms, so accounting for hardware lag using around 2078 (for half-duplex) - 8 (lag)
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#define EMSUART_TX_WAIT_BYTE (EMSUART_BIT_TIME * 10) // Time to send one Byte (8 Bits, 1 Start Bit, 1 Stop Bit)
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#define EMSUART_TX_WAIT_BRK (EMSUART_BIT_TIME * 11) // Time to send a BRK Signal (11 Bit)
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#define EMSUART_TX_WAIT_GAP (EMSUART_BIT_TIME * 7) // Gap between to Bytes
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#define EMSUART_TX_LAG 8
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#define EMSUART_BUSY_WAIT (EMSUART_BIT_TIME / 8)
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#define EMS_TX_TO_CHARS (2 + 20)
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#define EMS_TX_TO_COUNT ((EMS_TX_TO_CHARS)*10 * 8)
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namespace emsesp {
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typedef enum {
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EMS_TX_STATUS_OK = 1,
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EMS_TX_WTD_TIMEOUT, // watchdog timeout during send
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EMS_TX_BRK_DETECT, // incoming BRK during Tx
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} EMSUART_STATUS;
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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 ICACHE_FLASH_ATTR start(uint8_t tx_mode);
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static void ICACHE_FLASH_ATTR stop();
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static void ICACHE_FLASH_ATTR restart();
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static void ICACHE_FLASH_ATTR send_poll(uint8_t data);
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static EMSUART_STATUS ICACHE_FLASH_ATTR transmit(uint8_t * buf, uint8_t len);
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typedef struct {
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uint8_t length;
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uint8_t buffer[EMS_MAXBUFFERSIZE];
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} EMSRxBuf_t;
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private:
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static void ICACHE_RAM_ATTR emsuart_rx_intr_handler(void * para);
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static void ICACHE_FLASH_ATTR emsuart_recvTask(os_event_t * events);
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static void ICACHE_FLASH_ATTR emsuart_flush_fifos();
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static void ICACHE_FLASH_ATTR tx_brk();
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};
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} // namespace emsesp
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#endif
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