// -------------------------------------------- #pragma pack(push, 1) // -------------------------------------------- typedef struct UvcSelectedMode{ float fps; UvcFrameGeom geometry: 2; // just an enum UvcFrameFmt format: 2; // just an enum uint8_t reserved: 4; } UvcMode; C_ASSERT(sizeof(UvcMode) == 5); typedef union FpgaCtrlReg{ uint8_t bm; struct{ uint8_t video_en : 1; uint8_t audio_en : 1; uint8_t hsub_en : 1; uint8_t dpc_en : 1; uint8_t fmt_select : 1; // 0 - YUY2, 1 - NV12 uint8_t video_raw : 1; uint8_t fan_en : 1; uint8_t cfg_en : 1; }; } FpgaCtrlReg; C_ASSERT(sizeof(FpgaCtrlReg) == 1); // global state of periferals cached in a single place for convenient access from everywhere // this also allows us to implement API access to "internals" for debugging and monitoring typedef struct { uint16_t fpga_build; FpgaCtrlReg fpga_ctrl; // FX3 controls the state of this FPGA register so makes sense to cache it here for faster read access uint8_t gpif_initialized :1; // whether the GPIF init function has been called uint8_t fpga_cfg_ready :1; // true if FPGA Configuration DMA has been configured uint8_t force_fan_on_aux_pwr :1; // automatically turn the fan on if running on AUX power uint8_t uvc_streaming_started :1; // whether USB host has started streaming video uint8_t uac_streaming_started :1; // whether USB host has started streaming audio uint8_t sfp_present :1; // `1` if there's a device present in SFP+ cage UvcMode uvc_mode; uint8_t sensor_tgt_y_avg; uint16_t sensor_tgt_gain_g; int16_t sensor_gain_r; int16_t sensor_gain_b; int16_t fpga_gain_r; int16_t fpga_gain_b; uint32_t awb_oe_trig_count; // FPGA reported a red overexposure event during AWB stats' accumulation uint16_t last_usb_log_idx; // for drainig the logs out // background scheduler is based off of the CyU3PThreadSleep(interval_main_step) in the main loop which non-blockingly waits before running tasks uint16_t bg_main_step; // minimal polling interval for BG tasks struct{ uint16_t color_grading // push Color Grading tables from cache to FPGA , autoexp // AE , awb // AWB , sfp // SFP+ cage's PnP , log // send accumulated logs from gl_UsbLogBuffer using CyU3PDebugPrint() , health // check for internal errors and report via CyU3PDebugPrint() , aux_pwr; // use power more liberally when running on AUX } bg_interval // frequency of running a background task (the shorter the interval - the higher the frequency) , bg_clock // bg task's timer counter , bg_invocation // bg task's invocation counter , bg_active_work; // count how many times bg task performed meaningful work (should usually be <= bg_invocation's counter) } CachedGlobalState; C_ASSERT(sizeof(CachedGlobalState) == 84); // -------------------------------------------- #pragma pack(pop) // --------------------------------------------