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LibrePilot/flight/PiOS/Common/pios_rfm22b_com.c
Oleg Semyonov 27822d0cd4 Makefile and pios_config.h cleanup for PipXtreme
Now PipXtreme uses the same apps-defs.mk file as CopterControl.
Next steps are F4 boards.

Conflicts:
	flight/targets/PipXtreme/Makefile
	flight/targets/PipXtreme/System/inc/pios_config.h
2013-03-24 13:04:08 +02:00

134 lines
4.7 KiB
C

/**
******************************************************************************
* @addtogroup PIOS PIOS Core hardware abstraction layer
* @{
* @addtogroup PIOS_RFM22B Radio Functions
* @brief PIOS COM interface for for the RFM22B radio
* @{
*
* @file pios_rfm22b_com.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
* @brief Implements a driver the the RFM22B driver
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pios.h>
#ifdef PIOS_INCLUDE_RFM22B_COM
#include <pios_rfm22b_priv.h>
/* Provide a COM driver */
static void PIOS_RFM22B_COM_ChangeBaud(uint32_t rfm22b_id, uint32_t baud);
static void PIOS_RFM22B_COM_RegisterRxCallback(uint32_t rfm22b_id, pios_com_callback rx_in_cb, uint32_t context);
static void PIOS_RFM22B_COM_RegisterTxCallback(uint32_t rfm22b_id, pios_com_callback tx_out_cb, uint32_t context);
static void PIOS_RFM22B_COM_TxStart(uint32_t rfm22b_id, uint16_t tx_bytes_avail);
static void PIOS_RFM22B_COM_RxStart(uint32_t rfm22b_id, uint16_t rx_bytes_avail);
static bool PIOS_RFM22B_COM_Available(uint32_t rfm22b_com_id);
/* Local variables */
const struct pios_com_driver pios_rfm22b_com_driver = {
.set_baud = PIOS_RFM22B_COM_ChangeBaud,
.tx_start = PIOS_RFM22B_COM_TxStart,
.rx_start = PIOS_RFM22B_COM_RxStart,
.bind_tx_cb = PIOS_RFM22B_COM_RegisterTxCallback,
.bind_rx_cb = PIOS_RFM22B_COM_RegisterRxCallback,
.available = PIOS_RFM22B_COM_Available
};
/**
* Changes the baud rate of the RFM22B peripheral without re-initialising.
* \param[in] rfm22b_id RFM22B name (GPS, TELEM, AUX)
* \param[in] baud Requested baud rate
*/
static void PIOS_RFM22B_COM_ChangeBaud(uint32_t rfm22b_id, uint32_t baud)
{
struct pios_rfm22b_dev *rfm22b_dev = (struct pios_rfm22b_dev *)rfm22b_id;
if (!PIOS_RFM22B_validate(rfm22b_dev))
return;
// This is only allowed for coordinators.
if (!rfm22b_dev->coordinator)
return;
// Set the RF data rate on the modem to ~2X the selected buad rate because the modem is half duplex.
enum rfm22b_datarate datarate = RFM22_datarate_64000;
if (baud <= 1024)
datarate = RFM22_datarate_500;
else if (baud <= 2048)
datarate = RFM22_datarate_1000;
else if (baud <= 4096)
datarate = RFM22_datarate_8000;
else if (baud <= 9600)
datarate = RFM22_datarate_16000;
else if (baud <= 19200)
datarate = RFM22_datarate_32000;
else if (baud <= 38400)
datarate = RFM22_datarate_64000;
else if (baud <= 57600)
datarate = RFM22_datarate_128000;
else if (baud <= 115200)
datarate = RFM22_datarate_192000;
PIOS_RFM22B_SetDatarate(rfm22b_id, datarate, true);
}
static void PIOS_RFM22B_COM_RxStart(uint32_t rfm22b_id, uint16_t rx_bytes_avail)
{
}
static void PIOS_RFM22B_COM_TxStart(uint32_t rfm22b_id, uint16_t tx_bytes_avail)
{
struct pios_rfm22b_dev *rfm22b_dev = (struct pios_rfm22b_dev *)rfm22b_id;
if (!PIOS_RFM22B_validate(rfm22b_dev))
return;
}
static void PIOS_RFM22B_COM_RegisterRxCallback(uint32_t rfm22b_id, pios_com_callback rx_in_cb, uint32_t context)
{
struct pios_rfm22b_dev *rfm22b_dev = (struct pios_rfm22b_dev *)rfm22b_id;
if (!PIOS_RFM22B_validate(rfm22b_dev))
return;
/*
* Order is important in these assignments since ISR uses _cb
* field to determine if it's ok to dereference _cb and _context
*/
rfm22b_dev->rx_in_context = context;
rfm22b_dev->rx_in_cb = rx_in_cb;
}
static void PIOS_RFM22B_COM_RegisterTxCallback(uint32_t rfm22b_id, pios_com_callback tx_out_cb, uint32_t context)
{
struct pios_rfm22b_dev *rfm22b_dev = (struct pios_rfm22b_dev *)rfm22b_id;
if (!PIOS_RFM22B_validate(rfm22b_dev))
return;
/*
* Order is important in these assignments since ISR uses _cb
* field to determine if it's ok to dereference _cb and _context
*/
rfm22b_dev->tx_out_context = context;
rfm22b_dev->tx_out_cb = tx_out_cb;
}
static bool PIOS_RFM22B_COM_Available(uint32_t rfm22b_id)
{
return PIOS_RFM22B_LinkStatus(rfm22b_id);
}
#endif /* PIOS_INCLUDE_RFM22B_COM */