The master supports six different modes:

• I2C
  • master transmitter
  • master receiver
  • combined transfers (master transmitter and receiver with a repeated START)
• SMBus
  • quick command
  • send/receive byte
  • write/read byte
  • write/read word
  • process call
  • block write/read
  • block write block read process call
  • packet error checking (PEC)
• IRD
  • high-level mode based on the IRD concept
• Pause
• Testpin Condition
  • wait for specified level on one or more testpins
  • timeout
• Output Signal
• set one or more testpins to the specified level

The master window of I2C Studio offers an impressive number of features:

• messages are structured in a list of macros
• macros can be disabled/enabled individually to include/exclude them from the next transfer
• messages/macros can be named
• messages/macros can be moved/copied
• binary data to be sent can be read from a file
• I2C bitrate can be configured (full-/high-speed)
• send loop: complete message tree can be sent in a loop
• detailed error messages
• monitoring of SCL/SDA-stretching (time-out)
• monitoring of I2C Vcc