// Main feature: auto-configure blackbox on boot void adaptive_blackbox_init(void) { // Get flash geometry flash_status.total_bytes = flash_getSize(); flash_status.free_bytes = flash_getFreeSpace(); flash_status.used_bytes = flash_status.total_bytes - flash_status.free_bytes; flash_status.percent_used = (flash_status.used_bytes * 100) / flash_status.total_bytes;
// Feature flag for FMUV3 target #if defined(USE_ADAPTIVE_BLACKBOX) && defined(FLASH_M25P16) #define USE_ADAPTIVE_BLACKBOX_FEATURE #endif Add to src/main/target/MATEKF405/target.h : 2m flash - use fmuv3 firmware
if(percent < 30) return 2; // High rate if(percent < 60) return 1; // Normal rate if(percent < 85) return 0; // Low rate return 0; // Minimal rate when almost full } // Main feature: auto-configure blackbox on boot void
// Calculate remaining recording time based on current settings static uint16_t estimate_remaining_time(void) { uint32_t bytes_per_second; flash_status.free_bytes = flash_getFreeSpace()
// Check if flash is 2MB (typical FMUV3 boards) if(flash_status.total_bytes == 2 * 1024 * 1024) { // Configure for 2M flash blackboxConfig()->rate_num = 1; blackboxConfig()->rate_denom = 1; // Auto-admit settings if(flash_status.percent_used > 90) { smart_erase_oldest(); } // Set max log size uint16_t max_seconds = adaptive_bb_config.max_log_seconds; if(max_seconds > 0) { uint32_t max_bytes = max_seconds * 2000; // 2KB/sec estimate if(max_bytes < flash_status.free_bytes) { blackboxConfig()->max_log_size_kb = max_bytes / 1024; } } // Apply dynamic rate uint8_t dyn_rate = calculate_dynamic_rate(); if(dyn_rate == 0) { blackboxConfig()->rate_num = 1; blackboxConfig()->rate_denom = 2; // 500Hz } else if(dyn_rate == 1) { blackboxConfig()->rate_num = 1; blackboxConfig()->rate_denom = 1; // 1kHz } else { blackboxConfig()->rate_num = 2; blackboxConfig()->rate_denom = 1; // 2kHz } }
// Flash monitoring typedef struct flash_status_s { uint32_t total_bytes; uint32_t free_bytes; uint32_t used_bytes; uint8_t percent_used; uint16_t estimated_log_seconds; } flash_status_t;
// Smart erase: remove oldest 25% of logs when full static void smart_erase_oldest(void) { if (!adaptive_bb_config.auto_erase) return;