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blackbox_io.h
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blackbox_io.h
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/*
* This file is part of Cleanflight.
*
* Cleanflight is free software. You can redistribute
* this software and/or modify this software 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.
*
* Cleanflight 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 software.
*
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
typedef enum {
BLACKBOX_RESERVE_SUCCESS,
BLACKBOX_RESERVE_TEMPORARY_FAILURE,
BLACKBOX_RESERVE_PERMANENT_FAILURE
} blackboxBufferReserveStatus_e;
/*
* We want to limit how bursty our writes to the device are. Note that this will also restrict the maximum size of a
* header write we can make:
*/
#define BLACKBOX_MAX_ACCUMULATED_HEADER_BUDGET 256
/*
* Ideally, each iteration in which we are logging headers would write a similar amount of data to the device as a
* regular logging iteration. This way we won't hog the CPU by making a gigantic write:
*/
#define BLACKBOX_TARGET_HEADER_BUDGET_PER_ITERATION 64
extern int32_t blackboxHeaderBudget;
void blackboxOpen(void);
void blackboxWrite(uint8_t value);
int blackboxWriteString(const char *s);
void blackboxDeviceFlush(void);
bool blackboxDeviceFlushForce(void);
bool blackboxDeviceFlushForceComplete(void);
bool blackboxDeviceOpen(void);
void blackboxDeviceClose(void);
void blackboxEraseAll(void);
bool isBlackboxErased(void);
bool blackboxDeviceBeginLog(void);
bool blackboxDeviceEndLog(bool retainLog);
bool isBlackboxDeviceFull(void);
bool isBlackboxDeviceWorking(void);
int32_t blackboxGetLogNumber(void);
void blackboxReplenishHeaderBudget(void);
blackboxBufferReserveStatus_e blackboxDeviceReserveBufferSpace(int32_t bytes);