ardupilot/libraries/DataFlash/DFMessageWriter.cpp

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#include "ap_version.h"
#include "DFMessageWriter.h"
extern const AP_HAL::HAL& hal;
/* LogStartup - these are simple state machines which allow us to
* trickle out messages to the log files
*/
void DFMessageWriter::reset()
{
_finished = false;
}
void DFMessageWriter_DFLogStart::reset()
{
DFMessageWriter::reset();
_fmt_done = false;
_writesysinfo.reset();
_writeentiremission.reset();
stage = ls_blockwriter_stage_init;
next_format_to_send = 0;
ap = AP_Param::first(&token, &type);
}
void DFMessageWriter_DFLogStart::process()
{
switch(stage) {
case ls_blockwriter_stage_init:
stage = ls_blockwriter_stage_formats;
// fall through
case ls_blockwriter_stage_formats:
// write log formats so the log is self-describing
while (next_format_to_send < _dataflash_backend->num_types()) {
if (!_dataflash_backend->Log_Write_Format(_dataflash_backend->structure(next_format_to_send))) {
return; // call me again!
}
next_format_to_send++;
}
_fmt_done = true;
stage = ls_blockwriter_stage_parms;
// fall through
case ls_blockwriter_stage_parms:
while (ap) {
if (!_dataflash_backend->Log_Write_Parameter(ap, token, type)) {
return;
}
ap = AP_Param::next_scalar(&token, &type);
}
stage = ls_blockwriter_stage_sysinfo;
// fall through
case ls_blockwriter_stage_sysinfo:
_writesysinfo.process();
if (!_writesysinfo.finished()) {
return;
}
stage = ls_blockwriter_stage_write_entire_mission;
// fall through
case ls_blockwriter_stage_write_entire_mission:
_writeentiremission.process();
if (!_writeentiremission.finished()) {
return;
}
stage = ls_blockwriter_stage_vehicle_messages;
// fall through
case ls_blockwriter_stage_vehicle_messages:
// we guarantee 200 bytes of space for the vehicle startup
// messages. This allows them to be simple functions rather
// than e.g. DFMessageWriter-based state machines
if (_dataflash_backend->vehicle_message_writer()) {
if (_dataflash_backend->bufferspace_available() < 200) {
return;
}
(_dataflash_backend->vehicle_message_writer())();
}
stage = ls_blockwriter_stage_done;
// fall through
case ls_blockwriter_stage_done:
break;
}
_finished = true;
}
void DFMessageWriter_WriteSysInfo::reset()
{
DFMessageWriter::reset();
stage = ws_blockwriter_stage_init;
}
void DFMessageWriter_DFLogStart::set_mission(const AP_Mission *mission)
{
_writeentiremission.set_mission(mission);
}
void DFMessageWriter_WriteSysInfo::process() {
switch(stage) {
case ws_blockwriter_stage_init:
stage = ws_blockwriter_stage_firmware_string;
// fall through
case ws_blockwriter_stage_firmware_string:
if (! _dataflash_backend->Log_Write_Message(_firmware_string)) {
return; // call me again
}
stage = ws_blockwriter_stage_git_versions;
// fall through
case ws_blockwriter_stage_git_versions:
#if defined(PX4_GIT_VERSION) && defined(NUTTX_GIT_VERSION)
if (! _dataflash_backend->Log_Write_Message("PX4: " PX4_GIT_VERSION " NuttX: " NUTTX_GIT_VERSION)) {
return; // call me again
}
#endif
stage = ws_blockwriter_stage_system_id;
// fall through
case ws_blockwriter_stage_system_id:
char sysid[40];
if (hal.util->get_system_id(sysid)) {
if (! _dataflash_backend->Log_Write_Message(sysid)) {
return; // call me again
}
}
// fall through
}
_finished = true; // all done!
}
void DFMessageWriter_WriteEntireMission::process() {
switch(stage) {
case em_blockwriter_stage_init:
if (_mission == NULL) {
stage = em_blockwriter_stage_done;
break;
} else {
stage = em_blockwriter_stage_write_new_mission_message;
}
// fall through
case em_blockwriter_stage_write_new_mission_message:
if (! _dataflash_backend->Log_Write_Message("New mission")) {
return; // call me again
}
stage = em_blockwriter_stage_write_mission_items;
// fall through
case em_blockwriter_stage_write_mission_items:
AP_Mission::Mission_Command cmd;
while (_mission_number_to_send < _mission->num_commands()) {
// upon failure to write the mission we will re-read from
// storage; this could be improved.
if (_mission->read_cmd_from_storage(_mission_number_to_send,cmd)) {
if (!_dataflash_backend->Log_Write_Mission_Cmd(*_mission, cmd)) {
return; // call me again
}
}
_mission_number_to_send++;
}
stage = em_blockwriter_stage_done;
// fall through
case em_blockwriter_stage_done:
break;
}
_finished = true;
}
void DFMessageWriter_WriteEntireMission::reset()
{
DFMessageWriter::reset();
stage = em_blockwriter_stage_init;
_mission_number_to_send = 0;
}
void DFMessageWriter_WriteEntireMission::set_mission(const AP_Mission *mission)
{
_mission = mission;
}