Module capsules::adc [−] [src]

Provides userspace applications with the ability to sample analog signals.

Reexports

use core::cell::Cell;

use core::cmp;

use kernel::AppId;

use kernel::AppSlice;

use kernel::Callback;

use kernel::Driver;

use kernel::ReturnCode;

use kernel::Shared;

use kernel::common::take_cell::MapCell;

use kernel::common::take_cell::TakeCell;

use kernel::hil;

Adc	ADC application driver, used by applications to interact with ADC. Not currently virtualized, only one application can use it at a time.
App	Holds buffers that the application has passed us

ADC modes, used to track internal state and to signify to applications which state a callback came from

Syscall driver number.

ADC_BUFFER1	Buffers to use for DMA transfers The size is chosen somewhat arbitrarily, but has been tested. At 175000 Hz, buffers need to be swapped every 70 us and copied over before the next swap. In testing, it seems to keep up fine.
ADC_BUFFER2
ADC_BUFFER3