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53 lines
1.6 KiB
53 lines
1.6 KiB
/* |
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* This file is free software: you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the |
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* Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This file is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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* See the GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include "AP_RCProtocol.h" |
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class SoftSerial { |
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public: |
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enum serial_config { |
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SERIAL_CONFIG_8N1 = 0, // DSM, SRXL etc, 8 bit, no parity, 1 stop bit |
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SERIAL_CONFIG_8E2I = 1, // SBUS, 8 bit, even parity, 2 stop bits, inverted |
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SERIAL_CONFIG_8N1I = 2, // FPort inverted, 8 bit, no parity, 1 stop bit |
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}; |
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SoftSerial(uint32_t baudrate, enum serial_config config); |
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bool process_pulse(uint32_t width_s0, uint32_t width_s1, uint8_t &b); |
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// get timestamp of the last byte |
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uint32_t get_byte_timestamp_us(void) const { |
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return byte_timestamp_us; |
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} |
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uint32_t baud() const { return baudrate; } |
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private: |
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const uint32_t baudrate; |
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const uint8_t half_bit; // width of half a bit in microseconds |
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const enum serial_config config; |
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uint8_t data_width; |
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uint8_t byte_width; |
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uint16_t stop_mask; |
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uint32_t timestamp_us; |
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uint32_t byte_timestamp_us; |
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struct { |
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uint32_t byte; |
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uint16_t bit_ofs; |
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} state; |
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};
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