Synopsis

typedef struct {
  CTL_TRANSPORT_t transport;
  CTL_STATUS_t (*set_direction)(CTL_PARALLEL_BUS_s *, unsigned);
  CTL_STATUS_t (*write)(CTL_PARALLEL_BUS_s *, unsigned);
  CTL_STATUS_t (*read)(CTL_PARALLEL_BUS_s *);
  CTL_MUTEX_t *mutex;
  unsigned __width;
  unsigned __output;
  unsigned __direction;
  unsigned __mask;
} CTL_PARALLEL_BUS_t;

Description

CTL_PARALLEL_BUS_t contains the bus state and methods that implement a parallel bus. Clients that use the parallel bus should consider all data in this structure private.

Structure

transport

Underlying transport for parallel buses realized by I2C or SPI devices.

set_direction

Method to set the bus direction.

write

Method to set the bus pins.

read

Method to read the bus pins.

__width

The bus width, in bits.

__output

The bus output state.

__direction

The bus direction.

__mask

The bus mask corresponding to __width.