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117 lines
2.4 KiB
117 lines
2.4 KiB
/*
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This file is part of VP-Digi.
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VP-Digi 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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VP-Digi 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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You should have received a copy of the GNU General Public License
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along with VP-Digi. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef DRIVERS_MODEM_H_
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#define DRIVERS_MODEM_H_
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#include <stdint.h>
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typedef enum
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{
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TEST_DISABLED,
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TEST_MARK,
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TEST_SPACE,
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TEST_ALTERNATING,
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} TxTestMode;
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typedef struct
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{
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uint8_t usePWM : 1; //0 - use R2R, 1 - use PWM
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uint8_t flatAudioIn : 1; //0 - normal (deemphasized) audio input, 1 - flat audio (unfiltered) input
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} Afsk_config;
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extern Afsk_config afskCfg;
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typedef enum
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{
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PREEMPHASIS,
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DEEMPHASIS,
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EMPHASIS_NONE
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} Emphasis;
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/**
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* @brief Get current DCD (channel busy) state
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* @return 0 if channel free, 1 if busy
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*/
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uint8_t Afsk_dcdState(void);
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/**
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* @brief Check if there is an ongoing TX test
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* @return 0 if not, 1 if any TX test is enabled
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*/
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uint8_t Afsk_isTxTestOngoing(void);
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/**
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* @brief Clear RMS meter state for specified modem
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* @param[in] modemNo Modem number: 0 or 1
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*/
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void Afsk_clearRMS(uint8_t modemNo);
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/**
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* @brief Clear RMS value from specified modem
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* @param[in] modemNo Modem number: 0 or 1
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* @return RMS
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*/
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uint16_t Afsk_getRMS(uint8_t modemNo);
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/**
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* @brief Current DCD state
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* @return 0 if no DCD (channel free), 1 if DCD
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*/
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uint8_t Afsk_dcdState(void);
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/**
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* @brief Start or restart TX test mode
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* @param[in] type TX test type: TEST_MARK, TEST_SPACE or TEST_ALTERNATING
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*/
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void Afsk_txTestStart(TxTestMode type);
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/**
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* @brief Stop TX test mode
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*/
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void Afsk_txTestStop(void);
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/**
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* @brief Configure and start TX
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* @warning Transmission should be started with Ax25_transmitBuffer
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*/
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void Afsk_transmitStart(void);
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/**
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* @brief Stop TX and go back to RX
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*/
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void Afsk_transmitStop(void);
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/**
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* @brief Initialize AFSK module
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*/
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void Afsk_init(void);
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void DMA1_Channel2_IRQHandler(void) __attribute__ ((interrupt));
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void TIM3_IRQHandler(void) __attribute__ ((interrupt));
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void TIM2_IRQHandler(void) __attribute__ ((interrupt));
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#endif
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