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7317891d39
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@2961 ebee16cc-31ac-478f-84a7-5cbb03baadba
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/**
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******************************************************************************
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*
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* @file ppm.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* @brief Sends or Receives the ppm values to/from the remote unit
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program 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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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* 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, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//#include <string.h> // memmove
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#include "main.h"
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#include "rfm22b.h"
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#include "saved_settings.h"
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#include "ppm.h"
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#if defined(PIOS_COM_DEBUG)
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#define PPM_DEBUG
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#endif
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// *************************************************************
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// can be called from an interrupt if you wish
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// call this once every ms
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void ppm_1ms_tick(void)
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{
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if (booting) return;
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if (saved_settings.mode == MODE_PPM_TX)
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{
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}
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else
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if (saved_settings.mode == MODE_PPM_RX)
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{
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}
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}
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// *************************************************************
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// return a byte for the tx packet transmission.
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//
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// return value < 0 if no more bytes available, otherwise return byte to be sent
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int16_t ppm_TxDataByteCallback(void)
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{
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return -1;
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}
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// *************************************************************
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// we are being given a received byte
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//
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// return TRUE to continue current packet receive, otherwise return FALSe to halt current packet reception
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bool ppm_RxDataByteCallback(uint8_t b)
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{
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return true;
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}
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// *************************************************************
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// call this from the main loop (not interrupt) as often as possible
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void ppm_process(void)
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{
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if (booting) return;
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if (saved_settings.mode == MODE_PPM_TX)
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{
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}
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else
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if (saved_settings.mode == MODE_PPM_RX)
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{
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}
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}
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// *************************************************************
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void ppm_init(uint32_t our_sn)
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{
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#if defined(PPM_DEBUG)
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DEBUG_PRINTF("\r\nPPM init\r\n");
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#endif
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if (saved_settings.mode == MODE_PPM_TX)
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rfm22_init_tx_stream(saved_settings.min_frequency_Hz, saved_settings.max_frequency_Hz);
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else
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if (saved_settings.mode == MODE_PPM_RX)
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rfm22_init_rx_stream(saved_settings.min_frequency_Hz, saved_settings.max_frequency_Hz);
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rfm22_TxDataByte_SetCallback(ppm_TxDataByteCallback);
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rfm22_RxDataByte_SetCallback(ppm_RxDataByteCallback);
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rfm22_setFreqCalibration(saved_settings.rf_xtal_cap);
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rfm22_setNominalCarrierFrequency(saved_settings.frequency_Hz);
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rfm22_setDatarate(saved_settings.max_rf_bandwidth, FALSE);
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rfm22_setTxPower(saved_settings.max_tx_power);
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rfm22_setTxStream(); // TEST ONLY
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}
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// *************************************************************
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