#include <hw/i2c.h> #define DCMD_I2C_STATUS __DIOF (_DCMD_I2C, 11, i2c_status_t)
The arguments to devctl() are:
| Argument | Value |
|---|---|
| filedes | A file descriptor that you obtained by opening the device. |
| dcmd | DCMD_I2C_STATUS |
| dev_data_ptr | A pointer to an i2c_status_t |
| n_bytes | sizeof(i2c_status_t) |
| dev_info_ptr | NULL |
The DCMD_I2C_STATUS command gets the status of the device.