kopia lustrzana https://github.com/pjalocha/esp32-ogn-tracker
94 wiersze
4.0 KiB
C++
94 wiersze
4.0 KiB
C++
#include <stdint.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <utime.h>
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#include <unistd.h>
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#include "hal.h"
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#include "gps.h"
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#include "sdlog.h"
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#include "timesync.h"
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#include "fifo.h"
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static char LogFileName[32];
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static FILE *LogFile = 0;
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static uint16_t LogDate = 0; // [~days] date = FatTime>>16
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static TickType_t LogOpenTime; // [msec] when was the log file (re)open
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static const TickType_t LogReopen = 30000; // [msec] when to close and re-open the log file
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const size_t FIFOsize = 16384;
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static FIFO<char, FIFOsize> Log_FIFO; // 16K buffer for SD-log
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SemaphoreHandle_t Log_Mutex; // Mutex for the FIFO to prevent mixing between threads
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void Log_Write(char Byte) // write a byte into the log file buffer (FIFO)
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{ if(Log_FIFO.Write(Byte)>0) return; // if byte written into FIFO return
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while(Log_FIFO.Write(Byte)<=0) vTaskDelay(1); } // wait while the FIFO is full - we have to use vTaskDelay not TaskYIELD
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int Log_Free(void) { return Log_FIFO.Free(); } // how much space left in the buffer
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static int Log_Open(void)
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{ LogDate=GPS_FatTime>>16; // get the FAT-time date part
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int32_t Day = LogDate &0x1F; // get day, month, year
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int32_t Month = (LogDate>>5)&0x0F;
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int32_t Year = (LogDate>>9)-20;
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uint32_t Date = 0;
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if(Year>=0) Date = Day*10000 + Month*100 + Year; // create DDMMYY number for easy printout
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strcpy(LogFileName, "/sdcard/TR000000.LOG");
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Format_UnsDec(LogFileName+10, Date, 6); // format the date into the log file name
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LogFile = fopen(LogFileName, "at");
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if(LogFile==0) return -1;
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LogOpenTime=xTaskGetTickCount();
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return 0; }
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// TaskYIELD would not give time to lower priority task like log-writer
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static void Log_Check(void) // time check:
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{ if(!LogFile) return; // if last operation in error then don't do anything
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TickType_t TimeSinceOpen = xTaskGetTickCount()-LogOpenTime; // when did we (re)open the log file last time
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if(LogDate)
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{ if(TimeSinceOpen<LogReopen) return; } // if fresh (less than 30 seconds) then nothing to do
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else
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{ if(TimeSinceOpen<(LogReopen/4)) return; }
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fclose(LogFile); LogFile=0; // close and reopen the log file when older than 10 seconds
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uint32_t Time = TimeSync_Time();
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struct stat LogStat;
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struct utimbuf LogTime;
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if(stat(LogFileName, &LogStat)>=0) // get file attributes (maybe not really needed)
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{ LogTime.actime = Time; // set access and modification times of the dest. file
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LogTime.modtime = Time;
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utime(LogFileName, &LogTime); }
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}
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static int WriteLog(size_t MaxBlock=FIFOsize/2) // process the queue of lines to be written to the log
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{ if(!LogFile) return 0;
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int Count=0;
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for( ; ; )
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{ char *Block; size_t Len=Log_FIFO.getReadBlock(Block); if(Len==0) break;
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if(Len>MaxBlock) Len/=2;
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int Write=fwrite(Block, 1, Len, LogFile);
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Log_FIFO.flushReadBlock(Len);
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if(Write!=Len) { fclose(LogFile); LogFile=0; return -1; }
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Count+=Write; }
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return Count; }
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extern "C"
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void vTaskSDLOG(void* pvParameters)
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{ Log_FIFO.Clear();
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for( ; ; )
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{ if(!SD_isMounted())
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{ vTaskDelay(5000); SD_Mount(); continue; }
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if(!LogFile)
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{ Log_Open();
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if(!LogFile) { SD_Unmount(); vTaskDelay(1000); continue; }
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}
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if(Log_FIFO.Full()<FIFOsize/4) { vTaskDelay(100); }
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int Write;
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do { Write=WriteLog(); } while(Write>0);
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if(Write<0) { SD_Unmount(); vTaskDelay(1000); continue; }
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// if(Write==0) vTaskDelay(100);
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Log_Check(); }
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}
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