HACKING: Document current tags and their intention/usage.

diff --git a/HACKING b/HACKING
index 30cd1fe5425db6da688743adec6f5830610a8468..a4698a62719290dc238e657d9dafc176ff195b95 100644 (file)
--- a/HACKING
+++ b/HACKING
@@ -176,6 +176,47 @@ Protocol decoder guidelines
    Not recommended:
      'FIND_ADDRESS', 'Get Temperature', 'start'
 
+ - Protocol decoder tags:
+
+   - Every decoder must have a "tags" list (>= 1 items, alphabetically sorted).
+
+   - All tag names start with a capital letter. Subsequent words of the name
+     are not capitalized, e.g. "Retro computing", "Debug/trace".
+
+   - All tag names should use singular form ("Sensor", not "Sensors").
+
+   Common tags:
+
+   - Analog/digital: Decoders related A/D conversion, e.g. ADCs and DACs.
+   - Audio: Decoders related to audio protocols, e.g. I²S, S/PDIF.
+   - Automotive: Decoders related to automotive protocols, e.g. CAN, FlexRay.
+   - Clock/timing: Decoders related to time keeping, timing, and clocks/RTCs.
+   - Debug/trace: Decoders related to microcontroller/CPU debugging, tracing,
+     programming/flashing protocols, e.g. SWD, JTAG, AVR ISP, ARM ETMv3.
+   - Display: Decoders related to display technologies, e.g. DVI, HDMI,
+     TFT, OLED, LCD, HD44780, EDID, and various LED protocols.
+   - Embedded/industrial: Decoders related to protocols used in embedded
+     systems, industrial systems, or automation (e.g. SPI, Modbus, Profibus).
+   - Encoding: Decoders related to generic encoding / line coding systems,
+     e.g. Manchester, Miller, Gray code, OOK, and similar.
+   - IC: Decoders for specific (families of) ICs (i.e. not IC-independent,
+     generic protocols like UART, SPI, CAN, or USB).
+   - IR: Decoders related to infrared (e.g. remote control) protocols.
+   - Lighting: Decoders related to lighting technologies, e.g. DALI, DMX512.
+   - Memory: Decoders related to memories (e.g. NOR/NAND flash, EEPROM,
+     SDRAM, SRAM, various other volatile or non-volatile memories).
+   - Networking: Decoders related to (wired) networking technologies.
+   - PC: Decoders related to protocols used in personal computers (desktop,
+     workstation, laptop, server). This is not meant to be restricted to
+     "IBM PC" or "x86/Intel", Apple/Commodore/Atari/SPARC etc. are fine too.
+   - RFID: Decoders related to RFID protocols, e.g. EM4100, T55xx.
+   - Retro computing: Decoders related to retro computing, e.g. MCS-48, Z80.
+   - Security/crypto: Decoders related to security or cryptography.
+   - Sensor: Decoders for sensors or all kinds, e.g. temperature or humidity.
+   - Util: Random utility/helper decoders.
+   - Wireless/RF: Decoders related to various wireless/RF technologies, e.g.
+     Bluetooth, BLE, Wifi, or 2.4GHz/433MHz custom protocols.
+
 
 Testsuite
 ---------