mirror of
https://github.com/emsesp/EMS-ESP32.git
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43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/*
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* emsuart.h
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*
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* Header file for emsuart.cpp
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*
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* Paul Derbyshire - https://github.com/proddy/EMS-ESP
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*/
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#pragma once
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#include <ems.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 (EMS_MAX_TELEGRAM_LENGTH + 2) // max size of the buffer. EMS packets are max 32 bytes, plus extra 2 for BRKs
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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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#define EMSUART_recvTaskPrio 1
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#define EMSUART_recvTaskQueueLen 64
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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;
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void ICACHE_FLASH_ATTR emsuart_init();
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void ICACHE_FLASH_ATTR emsuart_stop();
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void ICACHE_FLASH_ATTR emsuart_start();
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_EMS_TX_STATUS ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len);
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