121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
/*
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serialUtils.h - Definitions and utility functions for the Serial feature.
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Copyright (c) 2015 Jeff Hoefs. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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See file LICENSE.txt for further informations on licensing terms.
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Last updated by Jeff Hoefs: October 3rd, 2015
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*/
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#ifndef SERIAL_UTILS_H
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#define SERIAL_UTILS_H
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// Serial port Ids
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#define HW_SERIAL0 0x00
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#define HW_SERIAL1 0x01
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#define HW_SERIAL2 0x02
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#define HW_SERIAL3 0x03
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// extensible up to 0x07
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#define SW_SERIAL0 0x08
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#define SW_SERIAL1 0x09
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#define SW_SERIAL2 0x0A
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#define SW_SERIAL3 0x0B
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// extensible up to 0x0F
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#define SERIAL_PORT_ID_MASK 0x0F
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#define MAX_SERIAL_PORTS 8
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#define SERIAL_READ_ARR_LEN 12
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// map configuration query response resolution value to serial pin type
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#define RES_RX1 0x02
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#define RES_TX1 0x03
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#define RES_RX2 0x04
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#define RES_TX2 0x05
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#define RES_RX3 0x06
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#define RES_TX3 0x07
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// Serial command bytes
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#define SERIAL_CONFIG 0x10
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#define SERIAL_WRITE 0x20
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#define SERIAL_READ 0x30
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#define SERIAL_REPLY 0x40
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#define SERIAL_CLOSE 0x50
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#define SERIAL_FLUSH 0x60
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#define SERIAL_LISTEN 0x70
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// Serial read modes
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#define SERIAL_READ_CONTINUOUSLY 0x00
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#define SERIAL_STOP_READING 0x01
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#define SERIAL_MODE_MASK 0xF0
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struct serial_pins {
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uint8_t rx;
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uint8_t tx;
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};
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/*
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* Get the serial serial pin type (RX1, TX1, RX2, TX2, etc) for the specified pin.
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*/
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inline uint8_t getSerialPinType(uint8_t pin) {
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#if defined(PIN_SERIAL_RX)
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// TODO when use of HW_SERIAL0 is enabled
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#endif
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#if defined(PIN_SERIAL1_RX)
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if (pin == PIN_SERIAL1_RX) return RES_RX1;
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if (pin == PIN_SERIAL1_TX) return RES_TX1;
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#endif
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#if defined(PIN_SERIAL2_RX)
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if (pin == PIN_SERIAL2_RX) return RES_RX2;
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if (pin == PIN_SERIAL2_TX) return RES_TX2;
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#endif
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#if defined(PIN_SERIAL3_RX)
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if (pin == PIN_SERIAL3_RX) return RES_RX3;
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if (pin == PIN_SERIAL3_TX) return RES_TX3;
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#endif
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return 0;
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}
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/*
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* Get the RX and TX pins numbers for the specified HW serial port.
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*/
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inline serial_pins getSerialPinNumbers(uint8_t portId) {
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serial_pins pins;
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switch (portId) {
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#if defined(PIN_SERIAL_RX)
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// case HW_SERIAL0:
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// // TODO when use of HW_SERIAL0 is enabled
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// break;
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#endif
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#if defined(PIN_SERIAL1_RX)
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case HW_SERIAL1:
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pins.rx = PIN_SERIAL1_RX;
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pins.tx = PIN_SERIAL1_TX;
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break;
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#endif
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#if defined(PIN_SERIAL2_RX)
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case HW_SERIAL2:
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pins.rx = PIN_SERIAL2_RX;
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pins.tx = PIN_SERIAL2_TX;
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break;
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#endif
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#if defined(PIN_SERIAL3_RX)
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case HW_SERIAL3:
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pins.rx = PIN_SERIAL3_RX;
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pins.tx = PIN_SERIAL3_TX;
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break;
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#endif
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default:
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pins.rx = 0;
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pins.tx = 0;
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}
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return pins;
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}
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#endif /* SERIAL_UTILS_H */
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