DCMD_I2C_MASTER_SEND (deprecated)

The DCMD_I2C_MASTER_SEND command execute a master send transaction, using the slave device address and bus speed specified for the current connection.

Input

• i2c_masterhdr_t — the message header:

  typedef struct {
      uint32_t len;    /* length of data to send/recv, in bytes
                          (not including this header) */
      uint32_t stop;   /* send stop when complete? (0=no, 1=yes) */
  } i2c_masterhdr_t;
        
  

• uint8_t[] — the data buffer

Output

None.

If an error occurs, the command returns:

EIO

The master send failed. Causes include: bad slave address, bad bus speed, bus is busy.

EFAULT

An error occurred while accessing the data buffer.

EINVAL

Bad message format.

ENOMEM

Insufficient memory.

EPERM

The master is locked by another connection.