Testimony
17e94092a1
* Add Raspberry Pi Pico port - Adds BACnet/IP with abstracted network layer - Adds BACnet MS/TP support using RS485/UART - Includes README with examples * Add Pico 2 MS/TP demo, CI, and docs
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2025 Testimony Adams <adamstestimony@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0
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*
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*********************************************************************/
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#ifndef RS485_H
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#define RS485_H
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#include <stdint.h>
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#include <stdbool.h>
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#include "pico/stdlib.h"
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#include "hardware/uart.h"
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#include "hardware/gpio.h"
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#include "hardware/regs/uart.h"
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#define RS485_UART_ID uart1
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#define RS485_BAUD_RATE 38400
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#define RS485_TX_PIN 8
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#define RS485_RX_PIN 9
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#define RS485_DE_PIN 10
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#define DATA_BIT 8
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#define STOP_BIT 1
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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void rs485_rts_enable(bool enable);
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bool rs485_rts_enabled(void);
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bool rs485_byte_available(uint8_t *data_register);
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bool rs485_receive_error(void);
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void rs485_bytes_send(const uint8_t *buffer, uint16_t nbytes);
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uint32_t rs485_baud_rate(void);
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bool rs485_baud_rate_set(uint32_t baud);
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uint32_t rs485_silence_milliseconds(void);
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void rs485_silence_reset(void);
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uint32_t rs485_bytes_transmitted(void);
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uint32_t rs485_bytes_received(void);
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void rs485_init(void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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