/**
******************************************************************************
* @addtogroup OpenPilotModules OpenPilot Modules
* @{
* @addtogroup RadioComBridgeModule Com Port to Radio Bridge Module
* @brief Bridge Com and Radio ports
* @{
*
* @file RadioComBridge.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012-2013.
* @brief Bridges selected Com Port to the COM VCP emulated serial port
* @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 <openpilot.h>
#include <radiocombridge.h>
#include <oplinkstatus.h>
#include <objectpersistence.h>
#include <oplinksettings.h>
#include <oplinkreceiver.h>
#include <radiocombridgestats.h>
#include <uavtalk_priv.h>
#include <pios_rfm22b.h>
#include <ecc.h>
#if defined(PIOS_INCLUDE_FLASH_EEPROM)
#include <pios_eeprom.h>
#endif
#include <stdbool.h>
// ****************
// Private constants
#define STACK_SIZE_BYTES 150
#define TASK_PRIORITY (tskIDLE_PRIORITY + 1)
#define MAX_RETRIES 2
#define RETRY_TIMEOUT_MS 20
#define EVENT_QUEUE_SIZE 10
#define MAX_PORT_DELAY 200
#define SERIAL_RX_BUF_LEN 100
#define PPM_INPUT_TIMEOUT 100
// ****************
// Private types
typedef struct {
// The task handles.
xTaskHandle telemetryTxTaskHandle;
xTaskHandle telemetryRxTaskHandle;
xTaskHandle radioTxTaskHandle;
xTaskHandle radioRxTaskHandle;
xTaskHandle PPMInputTaskHandle;
xTaskHandle serialRxTaskHandle;
// The UAVTalk connection on the com side.
UAVTalkConnection telemUAVTalkCon;
UAVTalkConnection radioUAVTalkCon;
// Queue handles.
xQueueHandle uavtalkEventQueue;
xQueueHandle radioEventQueue;
// The raw serial Rx buffer
uint8_t serialRxBuf[SERIAL_RX_BUF_LEN];
// Error statistics.
uint32_t telemetryTxRetries;
uint32_t radioTxRetries;
// Is this modem the coordinator
bool isCoordinator;
// Should we parse UAVTalk?
bool parseUAVTalk;
// The current configured uart speed
OPLinkSettingsComSpeedOptions comSpeed;
} RadioComBridgeData;
// ****************
// Private functions
static void telemetryTxTask(void *parameters);
static void telemetryRxTask(void *parameters);
static void serialRxTask(void *parameters);
static void radioTxTask(void *parameters);
static void radioRxTask(void *parameters);
static void PPMInputTask(void *parameters);
static int32_t UAVTalkSendHandler(uint8_t *buf, int32_t length);
static int32_t RadioSendHandler(uint8_t *buf, int32_t length);
static void ProcessTelemetryStream(UAVTalkConnection inConnectionHandle, UAVTalkConnection outConnectionHandle, uint8_t *rxbuffer, uint8_t count);
static void ProcessRadioStream(UAVTalkConnection inConnectionHandle, UAVTalkConnection outConnectionHandle, uint8_t *rxbuffer, uint8_t count);
static void objectPersistenceUpdatedCb(UAVObjEvent *objEv);
static void registerObject(UAVObjHandle obj);
// ****************
// Private variables
static RadioComBridgeData *data;
/**
* @brief Start the module
*
* @return -1 if initialisation failed, 0 on success
*/
static int32_t RadioComBridgeStart(void)
{
if (data) {
// Get the settings.
OPLinkSettingsData oplinkSettings;
OPLinkSettingsGet(&oplinkSettings);
// Check if this is the coordinator modem
data->isCoordinator = (oplinkSettings.Coordinator == OPLINKSETTINGS_COORDINATOR_TRUE);
// We will not parse/send UAVTalk if any ports are configured as Serial (except for over the USB HID port).
data->parseUAVTalk = ((oplinkSettings.MainPort != OPLINKSETTINGS_MAINPORT_SERIAL) &&
(oplinkSettings.FlexiPort != OPLINKSETTINGS_FLEXIPORT_SERIAL) &&
(oplinkSettings.VCPPort != OPLINKSETTINGS_VCPPORT_SERIAL));
// Set the maximum radio RF power.
switch (oplinkSettings.MaxRFPower) {
case OPLINKSETTINGS_MAXRFPOWER_125:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_0);
break;
case OPLINKSETTINGS_MAXRFPOWER_16:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_1);
break;
case OPLINKSETTINGS_MAXRFPOWER_316:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_2);
break;
case OPLINKSETTINGS_MAXRFPOWER_63:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_3);
break;
case OPLINKSETTINGS_MAXRFPOWER_126:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_4);
break;
case OPLINKSETTINGS_MAXRFPOWER_25:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_5);
break;
case OPLINKSETTINGS_MAXRFPOWER_50:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_6);
break;
case OPLINKSETTINGS_MAXRFPOWER_100:
PIOS_RFM22B_SetTxPower(pios_rfm22b_id, RFM22_tx_pwr_txpow_7);
break;
default:
// do nothing
break;
}
// Configure our UAVObjects for updates.
UAVObjConnectQueue(UAVObjGetByID(OPLINKSTATUS_OBJID), data->uavtalkEventQueue, EV_UPDATED | EV_UPDATED_MANUAL | EV_UPDATE_REQ);
UAVObjConnectQueue(UAVObjGetByID(OBJECTPERSISTENCE_OBJID), data->uavtalkEventQueue, EV_UPDATED | EV_UPDATED_MANUAL);
if (data->isCoordinator) {
UAVObjConnectQueue(UAVObjGetByID(OPLINKRECEIVER_OBJID), data->radioEventQueue, EV_UPDATED | EV_UPDATED_MANUAL | EV_UPDATE_REQ);
} else {
UAVObjConnectQueue(UAVObjGetByID(OPLINKRECEIVER_OBJID), data->uavtalkEventQueue, EV_UPDATED | EV_UPDATED_MANUAL | EV_UPDATE_REQ);
}
if (data->isCoordinator) {
registerObject(RadioComBridgeStatsHandle());
}
// Configure the UAVObject callbacks
ObjectPersistenceConnectCallback(&objectPersistenceUpdatedCb);
// Start the primary tasks for receiving/sending UAVTalk packets from the GCS.
xTaskCreate(telemetryTxTask, "telemetryTxTask", STACK_SIZE_BYTES, NULL, TASK_PRIORITY, &(data->telemetryTxTaskHandle));
xTaskCreate(telemetryRxTask, "telemetryRxTask", STACK_SIZE_BYTES, NULL, TASK_PRIORITY, &(data->telemetryRxTaskHandle));
if (PIOS_PPM_RECEIVER != 0) {
xTaskCreate(PPMInputTask, "PPMInputTask", STACK_SIZE_BYTES, NULL, TASK_PRIORITY, &(data->PPMInputTaskHandle));
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_RegisterFlag(PIOS_WDG_PPMINPUT);
#endif
}
if (!data->parseUAVTalk) {
// If the user wants raw serial communication, we need to spawn another thread to handle it.
xTaskCreate(serialRxTask, "serialRxTask", STACK_SIZE_BYTES, NULL, TASK_PRIORITY, &(data->serialRxTaskHandle));
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_RegisterFlag(PIOS_WDG_SERIALRX);
#endif
}
xTaskCreate(radioTxTask, "radioTxTask", STACK_SIZE_BYTES, NULL, TASK_PRIORITY, &(data->radioTxTaskHandle));
xTaskCreate(radioRxTask, "radioRxTask", STACK_SIZE_BYTES, NULL, TASK_PRIORITY, &(data->radioRxTaskHandle));
// Register the watchdog timers.
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_RegisterFlag(PIOS_WDG_TELEMETRYTX);
PIOS_WDG_RegisterFlag(PIOS_WDG_TELEMETRYRX);
PIOS_WDG_RegisterFlag(PIOS_WDG_RADIOTX);
PIOS_WDG_RegisterFlag(PIOS_WDG_RADIORX);
#endif
return 0;
}
return -1;
}
/**
* @brief Initialise the module
*
* @return -1 if initialisation failed on success
*/
static int32_t RadioComBridgeInitialize(void)
{
// allocate and initialize the static data storage only if module is enabled
data = (RadioComBridgeData *)pios_malloc(sizeof(RadioComBridgeData));
if (!data) {
return -1;
}
// Initialize the UAVObjects that we use
OPLinkStatusInitialize();
ObjectPersistenceInitialize();
OPLinkReceiverInitialize();
RadioComBridgeStatsInitialize();
// Initialise UAVTalk
data->telemUAVTalkCon = UAVTalkInitialize(&UAVTalkSendHandler);
data->radioUAVTalkCon = UAVTalkInitialize(&RadioSendHandler);
// Initialize the queues.
data->uavtalkEventQueue = xQueueCreate(EVENT_QUEUE_SIZE, sizeof(UAVObjEvent));
data->radioEventQueue = xQueueCreate(EVENT_QUEUE_SIZE, sizeof(UAVObjEvent));
// Initialize the statistics.
data->telemetryTxRetries = 0;
data->radioTxRetries = 0;
data->parseUAVTalk = true;
data->comSpeed = OPLINKSETTINGS_COMSPEED_9600;
PIOS_COM_RADIO = PIOS_COM_RFM22B;
return 0;
}
MODULE_INITCALL(RadioComBridgeInitialize, RadioComBridgeStart);
// TODO this code (badly) duplicates code from telemetry.c
// This method should be used only for periodically updated objects.
// The register method defined in telemetry.c should be factored out in a shared location so it can be
// used from here...
static void registerObject(UAVObjHandle obj)
{
// Setup object for periodic updates
UAVObjEvent ev = {
.obj = obj,
.instId = UAVOBJ_ALL_INSTANCES,
.event = EV_UPDATED_PERIODIC,
.lowPriority = true,
};
// Get metadata
UAVObjMetadata metadata;
UAVObjGetMetadata(obj, &metadata);
EventPeriodicQueueCreate(&ev, data->uavtalkEventQueue, metadata.telemetryUpdatePeriod);
UAVObjConnectQueue(obj, data->uavtalkEventQueue, EV_UPDATED_PERIODIC | EV_UPDATED_MANUAL | EV_UPDATE_REQ);
}
/**
* Update telemetry statistics
*/
static void updateRadioComBridgeStats()
{
UAVTalkStats telemetryUAVTalkStats;
UAVTalkStats radioUAVTalkStats;
RadioComBridgeStatsData radioComBridgeStats;
// Get telemetry stats
UAVTalkGetStats(data->telemUAVTalkCon, &telemetryUAVTalkStats, true);
// Get radio stats
UAVTalkGetStats(data->radioUAVTalkCon, &radioUAVTalkStats, true);
// Get stats object data
RadioComBridgeStatsGet(&radioComBridgeStats);
radioComBridgeStats.TelemetryTxRetries = data->telemetryTxRetries;
radioComBridgeStats.RadioTxRetries = data->radioTxRetries;
// Update stats object
radioComBridgeStats.TelemetryTxBytes += telemetryUAVTalkStats.txBytes;
radioComBridgeStats.TelemetryTxFailures += telemetryUAVTalkStats.txErrors;
radioComBridgeStats.TelemetryRxBytes += telemetryUAVTalkStats.rxBytes;
radioComBridgeStats.TelemetryRxFailures += telemetryUAVTalkStats.rxErrors;
radioComBridgeStats.TelemetryRxSyncErrors += telemetryUAVTalkStats.rxSyncErrors;
radioComBridgeStats.TelemetryRxCrcErrors += telemetryUAVTalkStats.rxCrcErrors;
radioComBridgeStats.RadioTxBytes += radioUAVTalkStats.txBytes;
radioComBridgeStats.RadioTxFailures += radioUAVTalkStats.txErrors;
radioComBridgeStats.RadioRxBytes += radioUAVTalkStats.rxBytes;
radioComBridgeStats.RadioRxFailures += radioUAVTalkStats.rxErrors;
radioComBridgeStats.RadioRxSyncErrors += radioUAVTalkStats.rxSyncErrors;
radioComBridgeStats.RadioRxCrcErrors += radioUAVTalkStats.rxCrcErrors;
// Update stats object data
RadioComBridgeStatsSet(&radioComBridgeStats);
}
/**
* @brief Telemetry transmit task, regular priority
*
* @param[in] parameters The task parameters
*/
static void telemetryTxTask(__attribute__((unused)) void *parameters)
{
UAVObjEvent ev;
// Loop forever
while (1) {
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_TELEMETRYTX);
#endif
// Wait for queue message
if (xQueueReceive(data->uavtalkEventQueue, &ev, MAX_PORT_DELAY) == pdTRUE) {
if (ev.obj == RadioComBridgeStatsHandle()) {
updateRadioComBridgeStats();
}
// Send update (with retries)
int32_t ret = -1;
uint32_t retries = 0;
while (retries <= MAX_RETRIES && ret == -1) {
ret = UAVTalkSendObject(data->telemUAVTalkCon, ev.obj, ev.instId, 0, RETRY_TIMEOUT_MS);
if (ret == -1) {
++retries;
}
}
// Update stats
data->telemetryTxRetries += retries;
}
}
}
/**
* @brief Radio tx task. Receive data packets from the com port and send to the radio.
*
* @param[in] parameters The task parameters
*/
static void radioTxTask(__attribute__((unused)) void *parameters)
{
// Task loop
while (1) {
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_RADIOTX);
#endif
// Process the radio event queue, sending UAVObjects over the radio link as necessary.
UAVObjEvent ev;
// Wait for queue message
if (xQueueReceive(data->radioEventQueue, &ev, MAX_PORT_DELAY) == pdTRUE) {
if ((ev.event == EV_UPDATED) || (ev.event == EV_UPDATE_REQ)) {
// Send update (with retries)
int32_t ret = -1;
uint32_t retries = 0;
while (retries <= MAX_RETRIES && ret == -1) {
ret = UAVTalkSendObject(data->radioUAVTalkCon, ev.obj, ev.instId, 0, RETRY_TIMEOUT_MS);
if (ret == -1) {
++retries;
}
}
data->radioTxRetries += retries;
}
}
}
}
/**
* @brief Radio rx task. Receive data packets from the radio and pass them on.
*
* @param[in] parameters The task parameters
*/
static void radioRxTask(__attribute__((unused)) void *parameters)
{
// Task loop
while (1) {
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_RADIORX);
#endif
if (PIOS_COM_RADIO) {
uint8_t serial_data[16];
uint16_t bytes_to_process = PIOS_COM_ReceiveBuffer(PIOS_COM_RADIO, serial_data, sizeof(serial_data), MAX_PORT_DELAY);
if (bytes_to_process > 0) {
if (data->parseUAVTalk) {
// Pass the data through the UAVTalk parser.
ProcessRadioStream(data->radioUAVTalkCon, data->telemUAVTalkCon, serial_data, bytes_to_process);
} else if (PIOS_COM_TELEMETRY) {
// Send the data straight to the telemetry port.
// Following call can fail with -2 error code (buffer full) or -3 error code (could not acquire send mutex)
// It is the caller responsibility to retry in such cases...
int32_t ret = -2;
uint8_t count = 5;
while (count-- > 0 && ret < -1) {
ret = PIOS_COM_SendBufferNonBlocking(PIOS_COM_TELEMETRY, serial_data, bytes_to_process);
}
}
}
} else {
vTaskDelay(5);
}
}
}
/**
* @brief Receive telemetry from the USB/COM port.
*
* @param[in] parameters The task parameters
*/
static void telemetryRxTask(__attribute__((unused)) void *parameters)
{
// Task loop
while (1) {
uint32_t inputPort = data->parseUAVTalk ? PIOS_COM_TELEMETRY : 0;
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_TELEMETRYRX);
#endif
#if defined(PIOS_INCLUDE_USB)
// Determine output port (USB takes priority over telemetry port)
if (PIOS_USB_CheckAvailable(0) && PIOS_COM_TELEM_USB_HID) {
inputPort = PIOS_COM_TELEM_USB_HID;
}
#endif /* PIOS_INCLUDE_USB */
if (inputPort) {
uint8_t serial_data[16];
uint16_t bytes_to_process = PIOS_COM_ReceiveBuffer(inputPort, serial_data, sizeof(serial_data), MAX_PORT_DELAY);
if (bytes_to_process > 0) {
ProcessTelemetryStream(data->telemUAVTalkCon, data->radioUAVTalkCon, serial_data, bytes_to_process);
}
} else {
vTaskDelay(5);
}
}
}
/**
* @brief Reads the PPM input device and sends out OPLinkReceiver objects.
*
* @param[in] parameters The task parameters (unused)
*/
static void PPMInputTask(__attribute__((unused)) void *parameters)
{
xSemaphoreHandle sem = PIOS_RCVR_GetSemaphore(PIOS_PPM_RECEIVER, 1);
int16_t channels[RFM22B_PPM_NUM_CHANNELS];
while (1) {
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_PPMINPUT);
#endif
// Wait for the receiver semaphore.
if (xSemaphoreTake(sem, PPM_INPUT_TIMEOUT) == pdTRUE) {
// Read the receiver inputs.
for (uint8_t i = 0; i < OPLINKRECEIVER_CHANNEL_NUMELEM; ++i) {
channels[i] = PIOS_RCVR_Read(PIOS_PPM_RECEIVER, i + 1);
}
} else {
// Failsafe
for (uint8_t i = 0; i < OPLINKRECEIVER_CHANNEL_NUMELEM; ++i) {
channels[i] = PIOS_RCVR_INVALID;
}
}
// Pass the channel values to the radio device.
PIOS_RFM22B_PPMSet(pios_rfm22b_id, channels);
}
}
/**
* @brief Receive raw serial data from the USB/COM port.
*
* @param[in] parameters The task parameters
*/
static void serialRxTask(__attribute__((unused)) void *parameters)
{
// Task loop
while (1) {
uint32_t inputPort = PIOS_COM_TELEMETRY;
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_SERIALRX);
#endif
if (inputPort && PIOS_COM_RADIO) {
// Receive some data.
uint16_t bytes_to_process = PIOS_COM_ReceiveBuffer(inputPort, data->serialRxBuf, sizeof(data->serialRxBuf), MAX_PORT_DELAY);
if (bytes_to_process > 0) {
// Send the data over the radio link.
// Following call can fail with -2 error code (buffer full) or -3 error code (could not acquire send mutex)
// It is the caller responsibility to retry in such cases...
int32_t ret = -2;
uint8_t count = 5;
while (count-- > 0 && ret < -1) {
ret = PIOS_COM_SendBufferNonBlocking(PIOS_COM_RADIO, data->serialRxBuf, bytes_to_process);
}
}
} else {
vTaskDelay(5);
}
}
}
/**
* @brief Transmit data buffer to the com port.
*
* @param[in] buf Data buffer to send
* @param[in] length Length of buffer
* @return -1 on failure
* @return number of bytes transmitted on success
*/
static int32_t UAVTalkSendHandler(uint8_t *buf, int32_t length)
{
int32_t ret;
uint32_t outputPort = data->parseUAVTalk ? PIOS_COM_TELEMETRY : 0;
#if defined(PIOS_INCLUDE_USB)
// Determine output port (USB takes priority over telemetry port)
if (PIOS_COM_TELEM_USB_HID && PIOS_COM_Available(PIOS_COM_TELEM_USB_HID)) {
outputPort = PIOS_COM_TELEM_USB_HID;
}
#endif /* PIOS_INCLUDE_USB */
if (outputPort) {
// Following call can fail with -2 error code (buffer full) or -3 error code (could not acquire send mutex)
// It is the caller responsibility to retry in such cases...
ret = -2;
uint8_t count = 5;
while (count-- > 0 && ret < -1) {
ret = PIOS_COM_SendBufferNonBlocking(outputPort, buf, length);
}
} else {
ret = -1;
}
return ret;
}
/**
* Transmit data buffer to the com port.
*
* @param[in] buf Data buffer to send
* @param[in] length Length of buffer
* @return -1 on failure
* @return number of bytes transmitted on success
*/
static int32_t RadioSendHandler(uint8_t *buf, int32_t length)
{
if (!data->parseUAVTalk) {
return length;
}
uint32_t outputPort = PIOS_COM_RADIO;
// Don't send any data unless the radio port is available.
if (outputPort && PIOS_COM_Available(outputPort)) {
// Following call can fail with -2 error code (buffer full) or -3 error code (could not acquire send mutex)
// It is the caller responsibility to retry in such cases...
int32_t ret = -2;
uint8_t count = 5;
while (count-- > 0 && ret < -1) {
ret = PIOS_COM_SendBufferNonBlocking(outputPort, buf, length);
}
return ret;
} else {
return -1;
}
}
/**
* @brief Process a byte of data received on the telemetry stream
*
* @param[in] inConnectionHandle The UAVTalk connection handle on the telemetry port
* @param[in] outConnectionHandle The UAVTalk connection handle on the radio port.
* @param[in] rxbyte The received byte.
*/
static void ProcessTelemetryStream(UAVTalkConnection inConnectionHandle, UAVTalkConnection outConnectionHandle, uint8_t *rxbuffer, uint8_t length)
{
uint8_t position = 0;
// Keep reading until we receive a completed packet.
while (position < length) {
UAVTalkRxState state = UAVTalkProcessInputStreamQuiet(inConnectionHandle, rxbuffer, length, &position);
if (state == UAVTALK_STATE_COMPLETE) {
// We only want to unpack certain telemetry objects
uint32_t objId = UAVTalkGetPacketObjId(inConnectionHandle);
switch (objId) {
case OPLINKSTATUS_OBJID:
case OPLINKSETTINGS_OBJID:
case OPLINKRECEIVER_OBJID:
case MetaObjectId(OPLINKSTATUS_OBJID):
case MetaObjectId(OPLINKSETTINGS_OBJID):
case MetaObjectId(OPLINKRECEIVER_OBJID):
UAVTalkReceiveObject(inConnectionHandle);
break;
case OBJECTPERSISTENCE_OBJID:
case MetaObjectId(OBJECTPERSISTENCE_OBJID):
// receive object locally
// some objects will send back a response to telemetry
// FIXME:
// OPLM will ack or nack all objects requests and acked object sends
// Receiver will probably also ack / nack the same messages
// This has some consequences like :
// Second ack/nack will not match an open transaction or will apply to wrong transaction
// Question : how does GCS handle receiving the same object twice
// The OBJECTPERSISTENCE logic can be broken too if for example OPLM nacks and then REVO acks...
UAVTalkReceiveObject(inConnectionHandle);
// relay packet to remote modem
UAVTalkRelayPacket(inConnectionHandle, outConnectionHandle);
break;
default:
// all other packets are relayed to the remote modem
UAVTalkRelayPacket(inConnectionHandle, outConnectionHandle);
break;
}
}
}
}
/**
* @brief Process a byte of data received on the radio data stream.
*
* @param[in] inConnectionHandle The UAVTalk connection handle on the radio port.
* @param[in] outConnectionHandle The UAVTalk connection handle on the telemetry port.
* @param[in] rxbuffer The received buffer.
* @param[in] length buffer length
*/
static void ProcessRadioStream(UAVTalkConnection inConnectionHandle, UAVTalkConnection outConnectionHandle, uint8_t *rxbuffer, uint8_t length)
{
uint8_t position = 0;
// Keep reading until we receive a completed packet.
while (position < length) {
UAVTalkRxState state = UAVTalkProcessInputStreamQuiet(inConnectionHandle, rxbuffer, length, &position);
if (state == UAVTALK_STATE_COMPLETE) {
// We only want to unpack certain objects from the remote modem
// Similarly we only want to relay certain objects to the telemetry port
uint32_t objId = UAVTalkGetPacketObjId(inConnectionHandle);
switch (objId) {
case OPLINKSTATUS_OBJID:
case OPLINKSETTINGS_OBJID:
case MetaObjectId(OPLINKSTATUS_OBJID):
case MetaObjectId(OPLINKSETTINGS_OBJID):
// Ignore object...
// These objects are shadowed by the modem and are not transmitted to the telemetry port
// - OPLINKSTATUS_OBJID : ground station will receive the OPLM link status instead
// - OPLINKSETTINGS_OBJID : ground station will read and write the OPLM settings instead
break;
case OPLINKRECEIVER_OBJID:
case MetaObjectId(OPLINKRECEIVER_OBJID):
// Receive object locally
// These objects are received by the modem and are not transmitted to the telemetry port
// - OPLINKRECEIVER_OBJID : not sure why
// some objects will send back a response to the remote modem
UAVTalkReceiveObject(inConnectionHandle);
break;
default:
// all other packets are relayed to the telemetry port
UAVTalkRelayPacket(inConnectionHandle, outConnectionHandle);
break;
}
}
}
}
/**
* @brief Callback that is called when the ObjectPersistence UAVObject is changed.
* @param[in] objEv The event that precipitated the callback.
*/
static void objectPersistenceUpdatedCb(__attribute__((unused)) UAVObjEvent *objEv)
{
// Get the ObjectPersistence object.
ObjectPersistenceData obj_per;
ObjectPersistenceGet(&obj_per);
// Is this concerning our setting object?
if (obj_per.ObjectID == OPLINKSETTINGS_OBJID) {
// Is this a save, load, or delete?
bool success = false;
switch (obj_per.Operation) {
case OBJECTPERSISTENCE_OPERATION_LOAD:
{
#if defined(PIOS_INCLUDE_FLASH_LOGFS_SETTINGS)
// Load the settings.
void *obj = UAVObjGetByID(obj_per.ObjectID);
if (obj == 0) {
success = false;
} else {
// Load selected instance
success = (UAVObjLoad(obj, obj_per.InstanceID) == 0);
}
#endif
break;
}
case OBJECTPERSISTENCE_OPERATION_SAVE:
{
#if defined(PIOS_INCLUDE_FLASH_LOGFS_SETTINGS)
void *obj = UAVObjGetByID(obj_per.ObjectID);
if (obj == 0) {
success = false;
} else {
// Save selected instance
success = UAVObjSave(obj, obj_per.InstanceID) == 0;
}
#endif
break;
}
case OBJECTPERSISTENCE_OPERATION_DELETE:
{
#if defined(PIOS_INCLUDE_FLASH_LOGFS_SETTINGS)
void *obj = UAVObjGetByID(obj_per.ObjectID);
if (obj == 0) {
success = false;
} else {
// Save selected instance
success = UAVObjDelete(obj, obj_per.InstanceID) == 0;
}
#endif
break;
}
default:
break;
}
if (success == true) {
obj_per.Operation = OBJECTPERSISTENCE_OPERATION_COMPLETED;
ObjectPersistenceSet(&obj_per);
}
}
}