Struct capsules_core::i2c_master::I2CMasterDriver

pub struct I2CMasterDriver<'a, I: I2CMaster<'a>> { /* private fields */ }

Implementations

impl<'a, I: I2CMaster<'a>> I2CMasterDriver<'a, I>

pub fn new( i2c: &'a I, buf: &'static mut [u8], apps: Grant<App, UpcallCount<1>, AllowRoCount<0>, AllowRwCount<{ rw_allow::COUNT }>> ) -> I2CMasterDriver<'a, I>

Trait Implementations

impl<'a, I: I2CMaster<'a>> I2CHwMasterClient for I2CMasterDriver<'a, I>

fn command_complete(&self, buffer: &'static mut [u8], status: Result<(), Error>)

Called when an I2C command completed. The error denotes whether the command completed successfully or if an error occurred.

impl<'a, I: I2CMaster<'a>> SyscallDriver for I2CMasterDriver<'a, I>

fn command( &self, cmd_num: usize, arg1: usize, arg2: usize, processid: ProcessId ) -> CommandReturn

Setup shared buffers.

allow_num

• 1: buffer for command Initiate transfers

fn allocate_grant(&self, processid: ProcessId) -> Result<(), Error>

Request to allocate a capsule’s grant for a specific process.

fn allow_userspace_readable( &self, app: ProcessId, which: usize, slice: ReadWriteProcessBuffer ) -> Result<ReadWriteProcessBuffer, (ReadWriteProcessBuffer, ErrorCode)>

System call for a process to pass a buffer (a UserspaceReadableProcessBuffer) to the kernel that the kernel can either read or write. The kernel calls this method only after it checks that the entire buffer is within memory the process can both read and write.