mirror of
https://github.com/emsesp/EMS-ESP32.git
synced 2025-12-11 02:09:57 +03:00
39 lines
1.2 KiB
C
39 lines
1.2 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 <Arduino.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 10 // 4 buffers for circular filling to avoid collisions
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#define EMS_MAXBUFFERSIZE 32 // max size of the buffer. packets are max 32 bytes
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// this is how long we drop the Tx signal to create a 11-bit Break of zeros (BRK)
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// At 9600 baud, 11 bits will be 1144 microseconds
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// 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_BRK_WAIT 2070
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#define EMSUART_BIT_TIME 104 // bit time @9600 baud
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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 writePtr;
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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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void ICACHE_FLASH_ATTR emsuart_tx_buffer(uint8_t * buf, uint8_t len);
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void ICACHE_FLASH_ATTR emsuart_tx_poll();
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void ICACHE_FLASH_ATTR emsuart_tx_brk();
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