mirror of
https://github.com/emsesp/EMS-ESP32.git
synced 2025-12-09 09:19:51 +03:00
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/*
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* emsuart.h
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* Header file for emsuart.cpp
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* Paul Derbyshire - https://github.com/proddy/EMS-ESP-Boiler
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*/
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#ifndef __EMSUART_H
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#define __EMSUART_H
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#include <Arduino.h>
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#define EMSUART_UART 0 // UART 0 - there is only one on the esp8266
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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 4 // 4 buffers for circular filling to avoid collisions
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#define EMS_MAXBUFFERSIZE 128 // 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
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// At 9600 baud, 11 bits will be 1144 microseconds
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// the BRK from Boiler is roughly 1.039ms, so accounting for hardware lag using around 2078 (for half-duplex) - 8 (lag)
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#define EMS_TX_BRK_WAIT 2070
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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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int16_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_tx_buffer(uint8_t * buf, uint8_t len);
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void ICACHE_FLASH_ATTR emsaurt_tx_poll();
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void ICACHE_FLASH_ATTR emsuart_tx_brk();
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#endif
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