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69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
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* This file is part of Cleanflight.
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*
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* Cleanflight is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the 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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* Cleanflight is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with Cleanflight. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#define SOFTSERIAL_BUFFER_SIZE 256
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typedef enum {
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SOFTSERIAL1 = 0,
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SOFTSERIAL2
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} softSerialPortIndex_e;
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typedef struct softSerial_s {
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serialPort_t port;
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const timerHardware_t *rxTimerHardware;
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volatile uint8_t rxBuffer[SOFTSERIAL_BUFFER_SIZE];
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const timerHardware_t *txTimerHardware;
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volatile uint8_t txBuffer[SOFTSERIAL_BUFFER_SIZE];
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uint8_t isSearchingForStartBit;
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uint8_t rxBitIndex;
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uint8_t rxLastLeadingEdgeAtBitIndex;
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uint8_t rxEdge;
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uint8_t isTransmittingData;
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int8_t bitsLeftToTransmit;
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uint16_t internalTxBuffer; // includes start and stop bits
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uint16_t internalRxBuffer; // includes start and stop bits
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uint16_t transmissionErrors;
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uint16_t receiveErrors;
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uint8_t softSerialPortIndex;
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timerCCHandlerRec_t timerCb;
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timerCCHandlerRec_t edgeCb;
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} softSerial_t;
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extern timerHardware_t* serialTimerHardware;
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extern softSerial_t softSerialPorts[];
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extern const struct serialPortVTable softSerialVTable[];
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serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallbackPtr callback, uint32_t baud, portOptions_t options);
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// serialPort API
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void softSerialWriteByte(serialPort_t *instance, uint8_t ch);
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uint8_t softSerialTotalBytesWaiting(serialPort_t *instance);
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uint8_t softSerialReadByte(serialPort_t *instance);
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void softSerialSetBaudRate(serialPort_t *s, uint32_t baudRate);
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bool isSoftSerialTransmitBufferEmpty(serialPort_t *s);
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