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--- code:fx3_hvci_and_fpga_i_c_commands [2020/04/12 12:59] – [0x00-0x07 - FPGA general access] Igor Yefmov
+++ code:fx3_hvci_and_fpga_i_c_commands [2024/02/17 15:41] – [General image stats and adjustments] Igor Yefmov
@@ Line 1: / Line 1: @@
-====== Preface ======
+====== FX3/FPGA API spec ======
-%%SUB2r%% camera is built on a Cypress FX3 chipset that facilitates the ''Super-Speed USB 3.0+'' communication between the device and a host system. Every component of the camera, be it an FPGA or an image sensor, receives user commands via that Cypress FX3.
+FX3 API specification has been moved to [[fx3_api|this location]]
-On Windows the device is registered with a GUID ''{36FC9E60-C465-11CF-8056-444553540000}'' and if you are not planning on using the ''[[code:sub2r-lib|SUB2r-lib]]'' for your development - that would be the GUID to search for to properly connect to the command channel.
-Whether you use ''[[code:sub2r-lib|SUB2r-lib]]'' or not you need to install the [[manual:fx3_device_windows_10_driver|provided driver]] for the OS to properly configure the device in order to be able to connect to its control endpoints.
-Here's a sample code that shows how to send commands to both the ''[[#FX3 Host Vendor Command Reference|FX3 Host]]'' and to ''[[#FPGA I²C bridge]]''. The code lacks error checking (for clarity) and this should go without saying that if you copy-paste it into your code you **must** add error handling :)
-<code c++>// set a new auto-functions' update interval to 2x the default
-// just issue the command directly to FX3's vendor request interface
-void setUUInterval(){
-    S2R::I2C fx3;
-    fx3.open(0);
-    fx3.vrCmd(0xDF, S2R::FX3::write, 6000, 0);
-}
-// run DPC calibration - also just a straight-up vendor request command to FX3
-void runDPC(UCHAR _threshold = 240){
-    S2R::I2C fx3;
-    fx3.open(0);
-    fx3.vrCmd(S2R::FX3::calibrate_dpc, S2R::FX3::write, _threshold, 0);
-}
-// increase LED's green brightness by 25%
-// utilize the FPGA's I²C bridge
-void lightUpTheGreen()
-{
-    using Cmd = S2R::FX3::Fx3Cmd;
-    using OpType = S2R::FX3::VrCmdOpType;
-    S2R::FX3 fx3;   // `S2R::I2C fx3;` works as well
-    fx3.open(0);
-    uint8_t        buf[1]{0};
-    const uint16_t clrChannel{0x0A};    // LED green
-    fx3.vrCmd(Cmd::i2c_bridge, OpType::read, 0, clrChannel, buf, 1);
-    buf[0] += buf[0] / 4;  // yes, this can totally overflow
-    fx3.vrCmd(Cmd::i2c_bridge, OpType::write, buf[0], clrChannel);
-}
+====== FPGA I²C bridge (registers' map) ======
+The following tables provide information on how to access the camera's functionality for an FPGA I²C bridge.
+Here's a sample code (skipping all error checking) that sets the LED to bright-yellow color FIXME:
+<code c++>S2R::FX3 dev; // auto-open device #0
+using S2R::FX3;
+dev.vrCmd(FX3Cmd::i2c_bridge, VrCmdOpType::write, 255, 0x08); // red
+dev.vrCmd(FX3Cmd::i2c_bridge, VrCmdOpType::write, 255, 0x0A); // green
+dev.vrCmd(FX3Cmd::i2c_bridge, VrCmdOpType::write, 0, 0x0C);   // blue
 </code>
-----
+The address space is broken down into smaller chunks, grouped by common functionality:
+===== FPGA basic status and controls =====
+^Name ^Offset ^Bytes ^Access ^Bit mapping ^Notes ^
+|:!: FPGA Version|''0x00''|  4  |R/O| see [[code#firmware_version_info|Firmware Version Info]] | |
+|:!: FPGA status|''0x01''|  1  |R/O|''7:2'' reserved| |
+|:::|:::|:::|:::|:!: ''1'' DPC calibration done| ''1'' indicates that DPC calibration is completed |
+|:::|:::|:::|:::|:!: ''0'' SFP+| ''1'' indicates there is an active device in SFP+ cage |
+|:!: FPGA control|''0x02''|  1  |R/W|''7:2'' reserved| |
+|:::|:::|:::|:::|:!: ''1'' enable DPC| enable DPC correction |
+|:::|:::|:::|:::|:!: ''0'' FPGA config enable|if set to ''1'', the GPIF becomes read only and waits for an FPGA update bitstream|
+|:!: FPGA config status|''0x03''|  2  |R/O|see [[#FPGA config status - SPI codes|SPI codes]] for details| |
+|:!: FPGA core temperature|''0x04''|  1  | R/O | ''7:0'' - temperature in Farenheits | Reading of the FPGA's internal temperature sensor in degrees of Farenheits |
+|:!: LED RED|''0x05''|  2  |R/W| |LED's red intensity in range \([0..65535]\)|
+|:!: LED GREEN|''0x06''|  2  |R/W| |LED's green intensity in range \([0..65535]\)|
+|:!: LED BLUE|''0x07''|  2  |R/W| |LED's blue intensity in range \([0..65535]\)|
-====== FX3 Host Vendor Command Reference ======
+===== AWB =====
+Info for performing Auto White-Balance adjustments on the image
-The following tables provide information on how to access the camera's functionality for ''FX3 Host Vendor Command Interface''. The address space is split into smaller chunks, grouped by common functionality:
+^Name ^Offset ^Bytes ^Access ^Notes ^
-===== 0x00-0x9F =====
+|:!: AWB Red adjustment|''0x08''|  2  |R/W|a signed 16-bit value of an adjustment to apply to every pixel in Red channel. Default is \(0\)|
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
+|:!: AWB Green adjustment|''0x09''|  2  |R/W|a signed 16-bit value of an adjustment to apply to every pixel in Green channel. Default is \(0\)|
-|Reserved|''0x00''-''0x9F''| | | | | |Think of this as "system address space"|
+|:!: AWB Blue adjustment|''0x0A''|  2  |R/W|a signed 16-bit value of an adjustment to apply to every pixel in Blue channel. Default is \(0\)|
+|Reserved| ''0x0B'' | | | |
+|:!: AWB Red total| ''0x0C'' |  4  | R/O | |
+|:!: AWB Green total| ''0x0D'' |  4  | R/O | |
+|:!: AWB Blue total| ''0x0E'' |  4  | R/O | |
+|:!: AWB count total| ''0x0F'' |  4  | R/O | A count of pixels that were used to calculate the \(R/G/B\) totals |
-===== 0xA0-0xA7 =====
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
-|Bootloader check|''0xA0''| | |R/W| | |Check if a bootloader is running, the result is in the command's status code (success/failure interpreted as ''true''/''false'')|
-|Reserved|''0xA1''| | | | | | |
-|Run DPC calibration|''0xA2''| |DPC Threshold|W/O| | |Start the dynamic DPC calibration with the given DPC Threshold in range [0..255]|
-|Reconfig FGPA|''0xA3''| | |W/O| | |Writing anything into this register causes the FPGA to reconfigure itself from SPI Flash|
-|FPGA I²C Bridge|''0xA4''|FPGA register offset|FPGA data (write)|R/W|''0'' or ''1''|''7:0'' - FPGA data|FPGA write returns 0 byte buffer, FPGA read returns 1 byte buffer. Read/write is requested via control endpoint's direction attribute being set to ''DIR_FROM_DEVICE''/''DIR_TO_DEVICE''.\\ For details on individual commands refer to [[#FPGA I²C bridge|FPGA I²C bridge]]|
-|Sensor I²C bridge (8-bit configuration registers)|''0xA5''| Sensor register | ''mask'' and ''data'' (if writing) - see Notes column for details |R/W|''0'' or ''1''| ''7:0'' - sensor register's data | ''mask'' - an 8-bit MSB that specifies which bits to affect during a write operation - only the bits that are set in ''mask'' will be affected by bits in ''data''. Setting ''mask'' to ''0'' ultimately turns a write operation into a read one as no bits are getting modified\\ ''data'' - an 8-bit LSB that specifies the new data to write into sensor's register. The write only affects the bits that are set in ''mask''\\ Read operation returns an 8-bit register's value\\ Read/write is requested via control endpoint's direction attribute being set to ''DIR_FROM_DEVICE''/''DIR_TO_DEVICE''.\\ For details on each sensor's register's function refer to the sensor's specification |
-|Reserved for future I²C bridge |''0xA6''| | | | | | |
-|RAW Mode Select|''0xA7''| | |R/W| 1 |''7:1'' - Reserved\\ ''0'' - RAW Mode  |Select RAW Mode ('1') or Processed Video ('0')\\ **N.B.** This has been moved here from ''0xA5'' in FX3 version 46|
-===== 0xA8-0xA9 - sysinfo and debugging =====
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
-|Sysinfo|''0xA8''|data structure version (currently only ''1'' is supported) | bitmask of additional checks to perform:\\ ''0'' - check memory integrity\\ ''1'' - check DMA integrity\\ ''2''-''7'': reserved |R/O|V1: ''30''| **Supported features** (byte #5)\\ ''0'' - USB3\\ ''1'' - OTG (USB 2.0 host mode)\\ ''2'' - 512KB RAM\\ ''3'' - I2S\\ ''4'' - GPIF (under 32bits)\\ ''5'' - GPIF32\\ **Configured features** (byte #6)\\ ''0'' - I²C\\ ''1'' - I2S\\ ''2'' - UART\\ ''3'' - SPI\\ ''4'' - PIB on/off\\ ''5'' - DLL status\\ ''6'' - LPP on/off |Get various internal system info on the guts of the RTOS and the firmware running on FX3. Returned bytes:\\ **Version 1** (FX3 #52):\\ 0 - uint32_t: system uptime in ms ticks\\ 4 - uint8_t: Cypress part number\\ 5 - uint8_t: supported features\\ 6 - uint8_t: configured features\\ 7 - uint8_t: USB speed (0, 1, 2, 3 for: disconnected, FS, HS, SS)\\ 8 - uint32_t: memory alloc() count\\ 12 - uint32_t: memory free() count\\ 16 - uint32_t: DMA alloc() count\\ 20 - uint32_t: DMA free() count\\ 24 - uint16_t: PHY error count\\ 26 - uint16_t: LINK error count\\ 28 - uint8_t: status of memory corruption check\\ 29 - uint8_t: status of DMA corruption check|
-|Reserved|''0xA9''| | | | | | |
-===== 0xAA-0xAF - versioning and reprogramming =====
+===== Basic UVC controls =====
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
+^Name ^Offset ^Bytes ^Access ^Range ^Range description ^Neutral value ^
-|Erase SPI Flash|''0xAA''| | |W/O| | |Any write to this location invalidates the FX3 SPI Flash and causes the FX3 to reset itself to a bootloader mode for reprogramming|
+|:!: Brightness|''0x10''|  2  |R/W|\([-1024..1023]\) |\(-1024\) makes the image very dark\\ \(1023\) makes the image very bright |\(0\) |
-|FX3 version|''0xAB''| | |R/O|''4''|''31:29'' Vendor ID\\ ''28:24'' HW_CFG_ID\\ ''23:16'' Product ID\\ ''15:11'' Release type\\ ''10:0'' Build number|Get detailed version information of the FX3, for more details refer to [[#FX3 Version Info]]|
+|:!: Contrast|''0x11''|  2  |R/W|\([1..2047]\)  |\(1\) turns image into grayscale\\ \(2047\) makes all pixels either black or white |\(1023\) |
-|FPGA version|''0xAC''| | |R/O|''4''|''31:29'' Vendor ID\\ ''28:24'' HW_CFG_ID\\ ''23:16'' Product ID\\ ''15:11'' Release type\\ ''10:0'' Build number|Get detailed version information of the FPGA, for more details refer to [[#FPGA Version Info]]|
+|:!: Saturation|''0x12''|  2  |R/W|\([0..900]\) |\([0\%..900\%]\) or grayscale to 9x |\(100\) |
-|FPGA config. ctrl.|''0xAD''| | |W/O| | |Any write to this location will put the FPGA into configuration mode|
+|:!: Sharpness|''0x13''|  1  |R/W|\([0..255]\) | |\(0\) |
-|FPGA config. status - SPI codes|''0xAE''| | |R/O|''2''| see [[#FPGA config status - SPI codes|below]] for details |Retrieve detailed status of the FPGA configuration operation|
+|:!: Gamma|''0x14''|  1  |R/W|\([0..15]\) | |\(0\) |
-|SPI Flash write enable|''0xAF''| | |W/O| | |Reconfigure the FX3 IOMatrix to disable GPIF and enable SPI|
+|:!: Hue|''0x15''|  2  |R/W|\([-8192..8191]\) |\([-180°..180°)\) |\(0\) |
+|Reserved|''0x16-0x1F''| | | | |
-==== FPGA config status - SPI codes ====
-^ Bit name ^ Description ^
-|''15'' Program %%SwitchWord%% OK| |
-|''14'' Verify OK| Verification succeeded |
-|''13'' Program OK| Programming completed successfully |
-|''12'' Erase OK| SPI erase was successful |
-|''11'' Erase %%SwitchWord%% OK| |
-|''10'' Check ID OK| |
-|''9'' Initialize OK| |
-|''8'' Config started| Config operation has started |
-|''7'' CRC error| |
-|''6'' Timeout error| |
-|''5'' Program error| Error while programming the SPI |
-|''4'' Erase error| Encountered an error while erasing SPI |
-|''3'' %%IdCode%% error| |
-|''2'' Config error| Configuration operation errored out |
-|''1'' Config done| Configuration operation is complete |
-|''0'' Config not busy|Set to ''1'' while the config is not busy|
-===== 0xB0-0xCF =====
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
-|Reserved|''0xB0''-''0xCF''| | | | | | |
-===== 0xD0-0xD7 - Auto exposure configuration =====
+===== General image stats and adjustments =====
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
-|AE Setpoint|''0xD0''| |AE Setpoint|R/W|''0'' or ''1'' |''7:0'' AE Setpoint|Target Auto Exposure Luminance Setpoint [0..255]\\ Default: ''105''\\ This controls the "average luminance" of the whole frame that we are trying to achieve. The higher the value the brighter the result is going to be|
-|AE Hysteresis|''0xD1''| |AE Hysteresis|R/W|''0'' or ''2'' |''15:0'' AE Hysteresis|Auto Exposure Hysteresis Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''3.0''\\ This controls how far can we diverge from the set target luminance before we begin the correction. In other words the higher this value the further we allow the luminance to drift away from the target before correcting it|
-|AE Error Tolerance|''0xD2''| |AE Err Tol|R/W|''0'' or ''2'' |''15:0'' AE Err Tol|Auto Exposure Error Tolerance Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''1.0''\\ Specifies the "close enough" tolerance at which point the correction can be stopped. Normally this value is (at least somewhat) lower than the AE Hysteresis|
-|AE Exposure Scaling|''0xD3''| |AE Exp Scale|R/W|''0'' or ''2'' |''15:0'' AE Exp Scale|Auto Exposure Exposure Scaling Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''100.0''\\ Controls the speed (stepping) at which the correction is happening. Higher values will result in large brightness jumps and a value too high may cause an oscillation while a value that is too low will cause the correction process to be too slow and seamingly unresponsive|
-|AE C Gain Divisor|''0xD4''| |AE C Gain Divisor|R/W|''0'' or ''2'' |''15:0'' AE C Gain Divisor|Auto Exposure C Gain Divisor Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''4.0''\\ Value between 0 and 255 that is inversely proportional to the rate at which the C gain is adjusted in response to exposure errors.  (i.e. the larger the value, the slower C gain will adjust)|
-|Reserved|''0xD5''-''0xD7''| | | | | | |
-===== 0xD8-0xDE - Auto white balance configuration =====
+^  Defective pixel cancellation  ^^^^^
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
+^Name ^Offset ^Bytes ^Access ^Notes ^
-|AWB Setpoint|''0xD8''| |AWB Setpoint|R/W|''0'' or ''2'' |''15:0'' AWB Setpoint|Auto White Balance G Gain Setpoint [0..2047]\\ Default ''1024''\\ The pinned value for Green Gain that is used as the basis for the rest of the white balance adjustments. Only change this value if you need to make your picture brighter and you have exhausted both the Exposure and the Global Gain options|
+|:!: DPC Threshold|''0x20''|  2  |R/W| A write into this register triggers the start of DPC calibration |
-|AWB Hysteresis|''0xD9''| |AWB Hysteresis|R/W|''0'' or ''2'' |''15:0'' AWB Hysteresis|Auto White Balance Hysteresis Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''3.0''\\ How far can the error drift before we start adjusting it|
+|:!: DPC count|''0x21'' |  2  |R/O|Once the DPC calibration is done the 16-bit value is stored in here|
-|AWB Error Tolerance|''0xDA''| |AWB Err Tol|R/W|''0'' or ''2'' |''15:0'' AWB Err Tol|Auto White Balance Error Tolerance Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''1.0''\\ A.k.a. "good enough" approximation - controls when we stop the correction process, having achieved a "close enough" result. Generally this setting is at least somewhat lower than the AWB Hysteresis value|
+| |||||
-|AWB Adjustment Scaling|''0xDB''| |AWB Adj Scale|R/W|''0'' or ''2'' |''15:0'' AWB Adj Scale|Auto White Balance Adjustment Scaling Value [[numberFormats#ufix_8.8|UFIX 8.8]]\\ Default ''4.0''\\ Value between ''0'' and ''255'' that is inversely proportional to the rate at which the R and B gains are adjusted in response to white balance errors.  (i.e. the larger the value, the slower R and B gains will adjust)|
+^  General image stats  ^^^^^
-|Reserved|''0xDC''-''0xDE''| | | | | | |
+|:!: flags|''0x22''|  1  |R/O| ''7:2'' reserved\\ :!: ''1'' - indicates whether a red overexposure is detected\\ :!: ''0'' - set if there is a general overexposure detected |
+|:!: FPS|''0x23''|  2  |R/O|16-bit unsigned value representing number of 10μs units between frame start signals from the image sensor, e.g. a value of \(1000\) means it took 10ms between 2 frame start signals, which corresponds to 100FPS|
+|:!: Y average|''0x24''|  2  |R/O|Average "brightness" value|
-===== 0xDF - Auto-functions' timing =====
+=====  Color Correction Matrix (a.k.a. CCM or CMX)  =====
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
+See [[isp:ccm|Color correction matrix]] article in this Wiki's ISP section for more details. The 16-bit (MSB-LSB) value is defined as 7+9 bits, where MSB[7:1] are the integer part and MSB[0]LSB[7:0] is the fractional part (effectively that value is 512 times larger than the original fractional part)
-|Auto Update Period|''0xDF''| |Auto Update Period|R/W|''0'' or ''2'' |''15:0'' Auto Update Period|Auto Update Period [0..65535])\\ Default ''3000''\\ Determines how long we wait before trying to apply a new update for both exposure and white balance (when auto functions are enabled).  This is an asynchronous update rate (i.e. not an absolute time, but larger values should mean slower updates)|
-===== 0xE0-0xFF =====
+^Name ^Offset ^Bytes ^Access ^Notes ^
-^Name ^Offset ^wIndex ^wValue ^Access type ^Byte length ^Return buffer bits ^Notes ^
+|:!: CCM_00|''0x25''|  2  |R/W|\(CCM_{00}\)|
-|FX3 reset|''0xE0''| | |R/W| | |Cypress vendor command to soft reset FX3|
+|:!: CCM_01|''0x26''|  2  |R/W|\(CCM_{01}\)|
-|Reserved|''0xE1''-''0xFF''| | | | | | |
+|:!: CCM_02|''0x27''|  2  |R/W|\(CCM_{02}\)|
+|:!: CCM_10|''0x28''|  2  |R/W|\(CCM_{10}\)|
+|:!: CCM_11|''0x29''|  2  |R/W|\(CCM_{11}\)|
+|:!: CCM_12|''0x2A''|  2  |R/W|\(CCM_{12}\)|
+|:!: CCM_20|''0x2B''|  2  |R/W|\(CCM_{20}\)|
+|:!: CCM_21|''0x2C''|  2  |R/W|\(CCM_{21}\)|
+|:!: CCM_22|''0x2D''|  2  |R/W|\(CCM_{22}\)|
+===== Color grading =====
+^Name ^Offset ^Access ^Bit mapping ^Notes ^
+|:!: switch|''0x2E''|W|''15:10'' reserved |Controls what information is being read/written by accessing the register ''0x002F''|
+|:::|:::|:::|''9:7'' table switch|''000'' - Hue vs. Hue (''14'' bits)\\ ''001'' - Hue vs. Saturation (''12 bits'')\\ ''010'' - Lightness vs. Saturation (''12'' bits)\\ ''011'' - Saturation vs. Saturation (''12'' bits)\\ ''100'' - Lightness vs. Lightness (''12'' bits)\\  ''101'' - Hue vs. Lightness (''12'' bits)\\ ''110-111'' - reserved|
+|:::|:::|:::|''6:1'' index LSB| index into a page in the table |
+|:::|:::|:::|''0'' access mode| ''0'': "normal mode", in which all the subsequent accesses to the register ''0x002F'' are governed by the values in ''0x002E''\\ ''1'': "bulk access", where after a read or write access to register ''0x002F'' the "Index" value will auto-increment by one so that the next read/wrie will access the subsequent table slot|
+|:!: Value|''0x2F''|R/W|''15:0'' value| 16 bits of either signed or unsigned integer value\\  - for a "Hue vs. Hue" table the 14 bits signed value is in range ''[-8192..+8192]'' which maps linearly into a Hue angle range ''-180°..+180°''\\  - for a "Hue vs. Saturation" table (as well as for similar tables %%LvS%% and %%SvS%%) the 12 bit unsigned value in range ''[0..+1280]'' maps linearly into a Saturation range ''[0%..1000%]'' where ''100%'' is the neutral position and ''0%'' produces a greyscale image\\  - (until FPGA v.72) for a "Lightness vs. Lightness" table (as well as for similar table %%HvL%%) the 12 bit unsigned value in range ''[0..+4095]'' maps linearly into a Lightness absolute range ''[0..255]'' where ''0'' is pitch black and ''255'' is the maximum possible pixel luminosity value\\  - (starting with FPGA v.73) for a "Lightness vs. Lightness" table (as well as for similar table %%HvL%%) the 13 bit signed value in range ''[-4096..+4095]'' maps linearly into a Lightness *relative* (adjustment) range ''[-256..255]'' where ''0'' is no adjustment to pixel luminosity value|
-====== FPGA I²C bridge ======
+===== Media setup =====
-The following tables provide information on how to access the camera's functionality for an FPGA I²C bridge.
+==== Media output and transform blocks ====
+^Name ^Offset ^Access ^Bit mapping ^Notes ^
+|:!: Media output modules|''0x30''|R/W|''7'' - res\\ ''6'' - res (headphones)\\ ''5'' - res (UAC)\\ ''4'' - res\\ :!: ''3'' - HDMI video\\ :!: ''2'' - SDI video\\ :!: ''1'' - SFP+ video\\ :!: ''0'' - UVC|Enable/disable state of individual media output modules for video and audio streams|
+|:!: Video transform blocks|''0x31''|R/W|:!: ''7'' - sharpness\\ ''6'' - res\\ ''5'' - res\\ ''4'' - res\\ ''3'' - res\\ ''2'' - res\\ :!: ''1'' - CCM\\ :!: ''0'' - (UVC Gamma)|Enable/disable individual transformation blocks in video pipeline|
-Here's a sample code (skipping all error checking) that sets the LED to bright-yellow color:
+==== Video output formats ====
-<code c++>S2R::FX3 dev; // auto-open device #0
+^Name ^Offset ^Access ^Bit mapping ^Notes ^
-using S2R::FX3;
+|:!: Video output format|''0x32''|R/W|:!: ''7:4'' - UVC\\ :!: ''3:0'' - FPS code for SDI, SFP+, SDI|Bit depth for all video formats is set in register ''0x49''\\ UVC video formats:\\ :!:''0'' - "RAW" greyscale pre-debayer pixels\\ :!:''1'' - 4:4:4 RGB\\ :!:''2'' - (res) packed YCbCr 4:4:4\\ :!:''3'' - packed YCbCr 4:2:2\\ :!:''4'' - (res) packed YCbCr 4:2:0\\ :!:''5'' - (res) planar YCbCr 4:4:4\\ :!:''6'' - (res) planar YCbCr 4:2:2\\ :!:''7'' - planar YCbCr 4:2:0\\ :!:''8-15'' - (res) MJPEG, MPEG-x/H.26x, etc\\ \\ SDI/HDMI and SFP+ video output formats/FPS are always in unison. See [[code:fx3_hvci_and_fpga_i_c_commands#sdi_fps|SDI FPS]] table below for codes. SDI output is always in a packed (not planar) YUV 4:2:2 format|
-dev.vrCmd(FX3Cmd::i2c_bridge, VrCmdOpType::write, 255, 0x08); // red
+|:!: Video output pixel bit depth|''0x33''|R/W|:!: ''7:6'' - HDMI\\ :!: ''5:4'' - SDI\\ :!: ''3:2'' - SFP+\\ :!: ''1:0'' - UVC|Pixel bit depths \(d_p\) is calculated from a 2-bit value \(N\) as: \[d_p = (N+4)*2\] Not all values are valid, for example SDI and SFP+ both do not support ''8''-bit output and UVC **only** supports ''8''-bit color depth, at least for now|
-dev.vrCmd(FX3Cmd::i2c_bridge, VrCmdOpType::write, 255, 0x0A); // green
-dev.vrCmd(FX3Cmd::i2c_bridge, VrCmdOpType::write, 0, 0x0C);   // blue
-</code>
-The address space is broken down into smaller chunks, grouped by common functionality:
+==== Image sensor config ====
-===== 0x00-0x07 - FPGA general access =====
 ^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|FPGA Version #0|''0x00''|R/O|''7:5'' Vendor ID\\ ''4:0'' HW_CFG_ID| |
+|:!: Image sensor configuration|''0x34''|R/W|''7:2'' - res\\ :!: ''1:0'' - de-mosaicing strategy|**De-mosaicing strategy** directs the use of a specific implementation of color reconstruction:\\ ''3'', ''2'' - reserved\\ ''1'' - use "branching 5x5", for example the one [[http://www.siliconimaging.com/RGB%20Bayer.htm|described here]]\\ ''0'' - use "branchless 5x5", like the one [[https://www.ipol.im/pub/art/2011/g_mhcd/article.pdf|described in here]]|
-|FPGA Version #1|''0x01''|R/O|''7:0'' Product ID| |
+|Reserved|''0x35-0x39''| | | |
-|FPGA Version #2|''0x02''|R/O|''7:3'' Release type\\ ''2:0'' Build number MSB|Build number is split into 2 MSB and 8 LSB for a combined total width of 10 bits|
-|FPGA Version #3|''0x03''|R/O|''7:0'' Build number LSB|:::|
-|FPGA config status #0|''0x04''|R/O|see [[#FPGA config status - SPI codes|SPI codes]] for details|LSB (bits ''7''-''0'') of the FPGA config status|
-|FPGA config status #1|''0x05''|R/O|see [[#FPGA config status - SPI codes|SPI codes]] for details|MSB (bits ''15''-''8'') of the FPGA config status|
-|FPGA control|''0x06''|R/W| |Global control of the FPGA's functionality|
-|:::|:::|:::|''7'' FPGA config enable|If bit ''7'' is set, the GPIF becomes read only and waits for an update bitstream|
-|:::|:::|:::|''6'' on-board fan| (FPGA-72+) ''1'' turns the on-board fan on, ''0'' turns it off |
-|:::|:::|:::|''5'' RAW Mode|Setting bit ''5'' and clearing bit ''0x06::2'' will enable RAW mode output (4K Only)|
-|:::|:::|:::|''4'' Video Format|Bit ''4'' selects between NV12 ('1') and YUY2 ('0') output formats |
-|:::|:::|:::|''3'' DPC enable|Setting bit ''3'' along with bit ''0x06::0'' will perform a DPC correction|
-|:::|:::|:::|''2'' HSUB enable|Bit ''2'' is to enable/disable [[isp:Horizontal Subsampling]]|
-|:::|:::|:::|''1'' Audio enable|Bit ''1'' is to enable/disable on-board microphones|
-|:::|:::|:::|''0'' Video enable|Bit ''0'' enables/disables video streaming|
-|FPGA core temperature|''0x07''| R/O | ''7:0'' - temperature in Farenheits | Reading of the FPGA's internal temperature sensor in degrees of Farenheits |
-===== 0x08-0x0D - LED =====
+==== Audio setup ====
 ^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|LED_RED_L|''0x08''|R/W|''7:0'' Red LED|LSB of LED's red intensity in range [0..255]|
+|:!: Audio transform blocks|''0x3A''|R/W|''7:0'' - res|Enable/disable individual transformation blocks in audio pipeline|
-|LED_RED_H|''0x09''|R/W|Reserved| |
+|Reserved|''0x3B-0x3F''| | | |
-|LED_GREEN_L|''0x0A''|R/W|''7:0'' Green LED|LSB of LED's green intensity in range [0..255]|
-|LED_GREEN_H|''0x0B''|R/W|Reserved| |
-|LED_BLUE_L|''0x0C''|R/W|''7:0'' Blue LED|LSB of LED's blue intensity in range [0..255]|
-|LED_BLUE_H|''0x0D''|R/W|Reserved| |
-===== 0x0E-0x0F - Noise Reduction =====
+==== FOURCC formats (for UVC) ====
+A combination of data in ''0x0033[1:0]'' (pixel bit depth) and ''0x32[7:4]'' (video format) used for UVC is mapped into standard FOURCC codes as summarized in the following table:
+^''0x0033[1:0]''\''0x0032[7:4]'' ^''0'' (RAW) ^''1'' (RGB) ^''2'' (packed YUV 4:4:4((ordering is UYV))) ^''3'' (packed YUV 4:2:2((macropixel byte ordering: Y0U0Y1V0))) ^''7'' (planar YUV 4:2:0((chroma plane is a interleaved set of U/V samples))) ^
+^''0'' (8 bit) |:!: BA81/BYR1/GREY/Y8/Y800 (8bpp)|:!: BI_RGB/RGB (24bpp) |:!: Y444/IYU2 (24bpp) |:!: YUY2/YUYV (16 bpp)|:!: NV12 (12bpp)|
+^''1'' (10 bit) |:!: Y10((need to register with MS)) (16bpp((not 10)))|:!: BI_BITFIELDS (48bpp) |:!: Y410 (32bpp((includes 2 bit alpha at [31:30]))) |:!: Y210 (32bpp)\\ YUVP?/Y42T (24bpp?)|:!: P010 (32bpp) |
+^''2'' (12 bit) |:!: BYR2 (16pbb((not 12)))|:!: BI_BITFIELDS (48bpp) |:!: Y412((need to register with MS)) (40bpp((or 36?))) |:!: Y212((need to register with MS)) (32bpp((or 24?))) |:!: P012((need to register with MS)) (32bpp((or 24, or 18?))) |
+^''3'' (14 bit) |:!: Y16((yes, 16, not 14)) (16bpp((not 14)))|:!: BI_BITFIELDS (48bpp) |:!: Y414((need to register with MS)) (48bpp((or 42?))) |:!: Y214((need to register with MS)) (32bpp((or 28?))) |:!: P014((need to register with MS)) (32bpp((or 21?))) |
-==== pre-68 (SUB2r-lib will continue supporting this until end of August 2019) ====
+==== SDI FPS ====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
+Below is the table that lists codes for supported SDI FPS settings set in ''0x0032[3:0]'':
-|NR Control|''0x0E''|R/W|''7:1'' Reserved| |
+^  FPS  ^  code  ^
-|:::|:::|:::|''0'' NR Enable| '1' => NR enabled, '0' => NR disabled|
+|  23.98  |  0x01  |
-|NR Threshold|''0x0F''|R/W|''7:0'' NR Threshold|Noise level threshold in range [0..255]|
+|  24  |  0x02  |
+|  25  |  0x04  |
+|  29.97  |  0x05  |
+|  30  |  0x06  |
+|  50  |  0x08  |
+|  59.94  |  0x09  |
+|  60  |  0x0A  |
+|  120  |  0x0C  |
-==== starting with version 68 ====
+==== SDI pixel clock frequency ====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
+^  Frame geometry  ^  MHz  ^  FPS  ^
-|Chroma NR Control|''0x0E''|R/W|''7'' Reserved, must be ''0''\\ ''6:0'' value| Chroma (color or an \(H\) component of the \(H/S/L\) pixel data) noise reduction in range \([0\%..100\%]\) mapped into \([0..127]\). Setting this to ''0'' effectively turns the chroma denoising off |
+|  1920x1080  |  74.18  |  23.98  |
-|Luma NR Control|''0x0F''|R/W|''7'' Reserved, must be ''0''\\ ''6:0'' value| Luma (brightness or an \(L\) component of the \(H/S/L\) pixel data) noise reduction in range \([0\%..100\%]\) mapped into \([0..127]\). Setting this to ''0'' effectively turns the luma denoising off |
+|  :::   |  :::   |  29.97  |
+|  :::   |  74.25  |  24  |
+|  :::   |  :::   |  25  |
+|  :::   |  :::   |  30  |
+|  :::   |  148.35  |  59.94  |
+|  :::   |  148.5  |  50  |
+|  :::   |  :::   |  60  |
+|  :::   |  297  |  120  |
+|  3840x2160  |  296.70  |  23.98  |
+|  :::   |  :::   |  29.97  |
+|  :::   |  297   |  24  |
+|  :::   |  :::   |  25  |
+|  :::   |  :::   |  30  |
+|  :::   |  593.41  |  59.94  |
+|  :::   |  594  |  50  |
+|  :::   |  :::   |  60  |
+|  :::   |  1188  |  120  |
+|  7680x4320  |  1188  |  24  |
+|  :::   |  :::   |  30  |
-===== 0x10-0x1F - Basic UVC controls =====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|Brightness_L|''0x10''|R/W|''7:0'' LSB|16 bits of brightness are split into 8 bits of LSB and MSB |
-|Brightness_H|''0x11''|R/W|''7:0'' MSB|:::|
-|Contrast_L|''0x12''|R/W|''7:0'' LSB|16 bits of contrast are split into 8 bits of LSB and MSB |
-|Contrast_H|''0x13''|R/W|''7:0'' MSB|:::|
-|Saturation_L|''0x14''|R/W|''7:0'' LSB|16 bits of saturation are split into 8 bits of LSB and MSB |
-|Saturation_H|''0x15''|R/W|''7:0'' MSB|:::|
-|Sharpness_L|''0x16''|R/W|''7:0'' LSB|16 bits of sharpness are split into 8 bits of LSB and MSB |
-|Sharpness_H|''0x17''|R/W|''7:0'' MSB|:::|
-|Gamma_L|''0x18''|R/W|''7:0'' LSB|16 bits of gamma are split into 8 bits of LSB and MSB |
-|Gamma_H|''0x19''|R/W|''7:0'' MSB|:::|
-|Hue_L|''0x1A''|R/W|''7:0'' LSB|16 bits of hue are split into 8 bits of LSB and MSB |
-|Hue_H|''0x1B''|R/W|''7:0'' MSB|:::|
-|Reserved|''0x1C''-''0x1F''| | |
-===== 0x20-0x27 - Defective pixel cancellation =====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|DPC Threshold LSB|''0x20''|R/W|''7:0'' LSB| 16 bit of DPC (defective pixel cancellation) Threshold are split into 8 bits of LSB and MSB|
-|DPC Threshold MSB|''0x21''|R/W|''7:0'' MSB|:::|
-|DPC count LSB|''0x22''|R/O|''7:0'' LSB|Once the DPC calibration is done the 16-bit value is stored in these 2 registers|
-|DPC count MSB|''0x23''|R/O|''7:0'' MSB|:::|
-|Reserved|''0x24''-''0x27''| | |
-===== 0x28-0x2F - General image statistics =====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|Y average|''0x28''|R/O|''7:0'' value|
-|<del>U average</del>|<del>''0x29''</del>|<del>R/O</del>| |
-|<del>V average</del>|<del>''0x2A''</del>|<del>R/O</del>| |
-|R average|''0x29''|R/O|''7:0'' value|an average RGB value|
-|G average|''0x2A''|R/O|''7:0'' value|:::|
-|B average|''0x2B''|R/O|''7:0'' value|:::|
-|Reserved|''0x2C''-''0x2F''| | |
-===== 0x30-0x3F - GPIO =====
+===== Green Screen enhancer =====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|CAM_GPIO_L|''0x30''|R/W|reserved| |
-|CAM_GPIO_H|''0x31''|R/W|reserved| |
-|CAM_GPIO_DIR_L|''0x32''|R/W|reserved| |
-|CAM_GPIO_DIR_H|''0x33''|R/W|reserved| |
-|CAM_GPIO_OE_L|''0x34''|R/W|reserved| |
-|CAM_GPIO_OE_H|''0x35''|R/W|reserved| |
-|Reserved|''0x36''-''0x3F''| | |
-===== 0x40-0x7F - On-board compression =====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
-|Reserved|''0x40''-''0x7F''| | | Compression doesn't fit into the current Xilinx Artix-7 100T FPGA |
-===== 0x80-0xBF - Green Screen enhancer =====
 //"Green screen", a.k.a. "Chroma Key" on-board optimization is designed to replace a range of colors with a single solid one//
-==== 0x80-0x8F - band #0 ====
+==== band #0 ====
 If enabled these setting take precedence over other 3 bands
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
+^Name ^Offset ^Bytes ^Access ^Notes ^
-|CK control|''0x80''|R/W|''7:1'' reserved\\ ''0'' enable|enable/disable Chroma Key control|
+|:!: CK control|''0x80''|  1  |R/W|''7:1'' reserved\\ ''0'' enable/disable Chroma Key control|
-|CK status|''0x81''| |reserved| |
+|:!: CK saturation min|''0x81''|  1  |R/W|[0..255] to specify the minimum saturation threshold|
-|CK saturation min|''0x82''|R/W|''7:0'' sat. min|[0..255] to specify the minimum saturation threshold|
+|:!: CK saturation max|''0x82''|  1  |R/W|[0..255] to specify the maximum saturation threshold|
-|CK saturation max|''0x83''|R/W|''7:0'' sat. max|[0..255] to specify the maximum saturation threshold|
+|:!: CK luma min|''0x83''|  1  |R/W|[0..255] to specify the minimum brightness threshold|
-|CK luma min|''0x84''|R/W|''7:0'' luma min|[0..255] to specify the minimum brightness threshold|
+|:!: CK luma max|''0x84''|  1  |R/W|[0..255] to specify the maximum brightness threshold|
-|CK luma max|''0x85''|R/W|''7:0'' luma max|[0..255] to specify the maximum brightness threshold|
+|:!: CK hue|''0x85''|  2  |R/W|14 bits of a signed hue value, its [-8K..+8K] range is mapped into [-180°..+180°]|
-|CK hue LSB|''0x86''|R/W|''7:0'' hue LSB|14 bits of a signed hue value are split into 8 LSB and 6 MSB, its [-8K..+8K] range is mapped into [-180°..+180°]|
+|:!: CK tolerance|''0x86''|  2  |R/W|13 bits of an unsigned hue tolerance value, valid range is [0..8K], which is mapped into [0°..180°].\\ That value specifies how far to stretch the ''CK hue'' value both ways (symmetrically). If the ''CK tolerance'' is above 90° the covered color space is over 50% of values|
-|CK hue MSB|''0x87''|R/W|''7:6'' reserved\\ ''5:0'' hue MSB|:::|
+|:!: CK red|''0x87''|  2  |R/W| |
-|CK tolerance LSB|''0x88''|R/W|''7:0'' tolerance LSB|13 bits of an unsigned hue tolerance value are split into 8 LSB and 5 MSB, valid range is [0..8K], which is mapped into [0°..180°].\\ That value specifies how far to stretch the ''CK hue'' value both ways (symmetrically). If the ''CK tolerance'' is above 90° the covered color space is over 50% of values|
+|:!: CK green|''0x88''|  2  |R/W| |
-|CK tolerance MSB|''0x89''|R/W|''7:5'' reserved\\ ''4:0'' tolerance MSB|:::|
+|:!: CK blue|''0x89''|  2  |R/W| |
-|CK red LSB|''0x8A''|R/W|''7:0'' red LSB| |
+|Reserved|''0x8A-0x8F''| | | |
-|CK red MSB|''0x8B''|R/W|reserved| |
-|CK green LSB|''0x8C''|R/W|''7:0'' green LSB| |
-|CK green MSB|''0x8D''|R/W|reserved| |
-|CK blue LSB|''0x8E''|R/W|''7:0'' blue LSB| |
-|CK blue MSB|''0x8F''|R/W|reserved| |
-==== 0x90-0x9F - band #1 ====
+==== band #1 ====
 Color substitution (if enabled) takes place after the first band had a chance to process the pixels
-The layout of the settings is identical to that of band #0 just shifted down by a paragraph and occupying address block ''0x90-0x9F''
+The layout of the settings is identical to that of band #0 just shifted down by a paragraph and occupying address block ''0x0090-0x009F''
-==== 0xA0-0xAF - band #2 ====
+==== band #2 ====
 Color substitution (if enabled) takes place after the first and second bands had a chance to process the pixels
-The layout of the settings is identical to that of band #0 just shifted down by 2 paragraphs and occupying address block ''0xA0-0xAF''
+The layout of the settings is identical to that of band #0 just shifted down by 2 paragraphs and occupying address block ''0x00A0-0x00AF''
-==== 0xB0-0xBF - band #3 ====
+==== band #3 ====
 Color substitution (if enabled) takes place after other bands had a chance to process the pixels
 The layout of the settings is identical to that of band #0 just shifted down by 3 paragraphs and occupying address block ''0xB0-0xBF''
-===== 0xC0-0xCF - Color grading =====
-^Name ^Offset ^Access ^Bit mapping ^Notes ^
+==== mFT lense access ====
-|switch|''0xC0''|W| |Controls what information is being read/written by accessing the next set of registers (''0xC2..0xC3'')|
-|:::|:::|:::|''7:5'' table switch|''000'' - Hue vs. Hue (''14'' bits)\\ ''001'' - Hue vs. Saturation (''12 bits'')\\ ''010'' - Lightness vs. Saturation (''12'' bits)\\ ''011'' - Saturation vs. Saturation (''12'' bits)((scheduled for later))\\ ''100'' - Lightness vs. Lightness (''12'' bits)\\  ''101'' - Hue vs. Lightness (''12'' bits)((scheduled for later))\\ ''110-111'' - reserved|
-|:::|:::|:::|''4:1'' index MSB|Reserved for 4 MSB of the 12-bit index into tables|
-|:::|:::|:::|''0'' access mode| the only valid value right now is ''0'', which is "normal mode", in which all the subsequent access to the registers in this API block are governed by the values in ''0xC0'' and ''0xC1''\\ ''1'' would be used for "bulk access" where after a read or write access to register ''0xC2'' the "Index" value will auto-increment by one so that the next pair will access the subsequent table slot|
-|Index LSB|''0xC1''|W|''7:0'' index LSB| 8 LSB bits of the 12-bit index into a table (we only use 6 bits today and the rest are ignored)|
-|Value L|''0xC2''|R/W|''7:0'' LSB| 16 bits split into 8 LSB and 8 MSB\\  - for a "Hue vs. Hue" table the 14 bits signed value is in range ''[-8192..+8192]'' which maps linearly into a Hue angle range ''-180°..+180°''\\  - for a "Hue vs. Saturation" table (as well as for similar tables %%LvS%% and %%SvS%%) the 12 bit unsigned value in range ''[0..+1280]'' maps linearly into a Saturation range ''[0%..1000%]'' where ''100%'' is the neutral position and ''0%'' produces a greyscale image\\  - for a "Lightness vs. Lightness" table (as well as for similar table %%HvL%%) the 12 bit unsigned value in range ''[0..+4095]'' maps linearly into a Lightness range ''[0..255]'' where ''0'' is pitch black and ''255'' is the maximum possible pixel luminosity value|
-|Value H|''0xC3''|R/W|''7:0'' MSB|:::|
-|Reserved|''0xC4''-''0xCF''| | |
+^Name ^Offset ^Bytes ^Access ^Notes ^
+|:!: mFT control register|''0xC0''|  1  |R/W|''7:2'' returned data count\\ ''1'': (R/O) command completion flag \\ ''0'': (W/O) setting this to ''1'' sends the command to mFT|
+|:!: mFT command setup|''0xC1''|  1  |W/O|See below for the 32-bit command structure|
+|:!: mFT returned data|''0xC2''|  1  |R/O|Once the command completion flag is set in control register returned data can be retrieved through this register|
-===== 0xD0-0xFF - Reserved =====
+FPGA "register" ''0xC1'' serves as a service point to access mFT protocol and allows FX3 to communicate with the mFT by forwarding requests and replies between the two.
-This is where future API will land. Stay tuned ;-)
-====== FX3 Version Info ======
+Micro Four Thirds System (mFT) defines a communication protocol in which the "body" (host) issues 4 bytes of data (command type, command code, and two 1-byte parameters) and gets a response of variable number of bytes, depending on the command (including a 0-length data response). See the mFT spec for each individual command's request/response.
-The version id is also encoded into the firmware image file name as:
-<code><VendorID>_<HardwareID>_<ProductID>_<ReleaseType>_<BuildNumber></code>
-===== Vendor ID =====
-^Code ^Value ^
-|1|Cypress|
-===== Hardware ID =====
+FPGA acts as a two-way command repeater and in such capacity it expects a 4 byte command supplied to it as part of an I²C "write" operation and responds with the appropriate return data buffer to a subsequent "read" I²C operation on the same address.
-^Code ^Value ^
-|1|FX3|
-===== Product ID =====
+The 4 bytes of the command are laid out as follows:
-^Code ^Value ^
+<code>struct MftCmd{
-|1|reserved for Gen 1 camera, a.k.a. "Moon landing"|
+  uint8_t cmd_type;
-|2|reserved for Gen 2 camera, a.k.a. "Piggy"|
+  uint8_t cmd_code;
-|3|Gen 3 camera (Alpha), a.k.a. "Frankie" (from Frankenstein's Monster)|
+  uint8_t param1, param2;
-|4|Gen 3 camera, Production|
+};
+</code>
-===== Release type =====
+or in a more visual format (taking into consideration the little-endian memory layout typical of the architectures we use):
-^ Code ^ Name ^ Meaning ^
+|  MSW  ||  LSW  ||
-|0|Private build| Private build for debugging and similar purposes |
+|  MSB  |  LSB  |  MSB  |  LSB  |
-|1|Alpha| feature-incomplete early development cycle "somewhat stable" build |
+|  param2  |  param1  |  cmd_code  |  cmd_type  |
-|2|Beta| feature-complete, but not very stable build (lots of bugs) |
-|3|Evaluation| Tech preview |
-|4|Release candidate| feature complete and stable |
-|5|Release| general availability |
-|6|Backport| backport of a feature from next gen camera |
-|7|Emergency bug fix| a critical post-release bugfix |
-===== Build number =====
-^Code ^Value ^
-|#|Increments on each build|
-====== FPGA Version Info ======
-The version id is also encoded into the firmware image file name as:
-<code><VendorID>_<HardwareID>_<ProductID>_<ReleaseType>_<BuildNumber></code>
-===== Vendor ID =====
-^Code ^Value ^
-|1|Xilinx|
-===== Hardware ID =====
-^Code ^Value ^
-|1|Artix 100T|
-|2|Artix 200T|
-===== Product ID =====
-^Code ^Value ^
-|1|reserved|
-|2|reserved|
-|3|Gen 3 camera (Alpha), a.k.a. "Frankie"|
-|4|Gen 3 camera, Production|
-===== Release type =====
-^Code ^Value ^
-|0|Private build|
-|1|Alpha|
-|2|Beta|
-|3|Eval/Tech preview|
-|4|Release candidate|
-|5|Release|
-|6|Backport|
-|7|Emergency bug fix|
-===== Build number =====
-^Code ^Value ^
-|#|Increments on each build|
+which is the equivalent of this code:
+<code>MftCmd cmd{1, 2, 3, 4};
+static_assert(std::bit_cast<uint32_t>(cmd) == 0x04030201);
+</code>