Module esp32c6::i2c0::sr

source ·
Expand description

Describe I2C work status.

Structs

Type Aliases

  • ARB_LOST_R
    Field ARB_LOST reader - When the I2C controller loses control of SCL line, this register changes to 1.
  • BUS_BUSY_R
    Field BUS_BUSY reader - 1: the I2C bus is busy transferring data, 0: the I2C bus is in idle state.
  • R
    Register SR reader
  • RESP_REC_R
    Field RESP_REC reader - The received ACK value in master mode or slave mode. 0: ACK, 1: NACK.
  • RXFIFO_CNT_R
    Field RXFIFO_CNT reader - This field represents the amount of data needed to be sent.
  • SCL_MAIN_STATE_LAST_R
    Field SCL_MAIN_STATE_LAST reader - This field indicates the states of the I2C module state machine. 0: Idle, 1: Address shift, 2: ACK address, 3: Rx data, 4: Tx data, 5: Send ACK, 6: Wait ACK
  • SCL_STATE_LAST_R
    Field SCL_STATE_LAST reader - This field indicates the states of the state machine used to produce SCL. 0: Idle, 1: Start, 2: Negative edge, 3: Low, 4: Positive edge, 5: High, 6: Stop
  • SLAVE_ADDRESSED_R
    Field SLAVE_ADDRESSED reader - When configured as an I2C Slave, and the address sent by the master is equal to the address of the slave, then this bit will be of high level.
  • SLAVE_RW_R
    Field SLAVE_RW reader - When in slave mode, 1: master reads from slave, 0: master writes to slave.
  • STRETCH_CAUSE_R
    Field STRETCH_CAUSE reader - The cause of stretching SCL low in slave mode. 0: stretching SCL low at the beginning of I2C read data state. 1: stretching SCL low when I2C Tx FIFO is empty in slave mode. 2: stretching SCL low when I2C Rx FIFO is full in slave mode.
  • TXFIFO_CNT_R
    Field TXFIFO_CNT reader - This field stores the amount of received data in RAM.