Crate teensycore

A kernel for teensy-4.0 microcontroller.

This crate provides all the resources necessary to begin interfacing with the teensy-4.0. To get started, you simply need to use the main! macro. This will perform a number of chores for you including the following:

• Initialize uart, xbar, gpio, system clock
• Enable interrupts
• Add panic handling
• Verify memory access
• Enable FPU

Modules

• clock
  A top level system which keeps track of time using the onboard clock peripheral.
• debug
• gate
• i2c
  This module provides the ability to designate any two gpio pins as SDA/SCL which allows you to introduce i2c capabilities into your project.
• math
  This module represents basic math functionality that you might find useful in a kernel.
• mem
  This module represents paged memory functionality alloc(), and free().
• phys
  Phys module handles kernel-level interfacing for physical, on-board peripherals.
• prelude
• serio
  This module represents the serial communication protocol based on UART physical hardware.
• system
  A collection of datastructures to aid in general development.
• usb_serial

Macros

• assembly
  This method will call the asm! macro but in a way that doesn’t break tests. Use it in lieu of the asm! macro.
• gate_open
• main
  This is the primary macro necessary to bootstrap your application. It takes a code block that will be used as the entrypoint to your logic.
• str
  A thin wrapper around Str::with_content($X)
• using
  A directive for managing memory.
• vec_str
  This macro takes a static string and returns a vector containing the sequence of characters.
• vector
  This macro returns a vector of the items you pass to it.

Enums

• PanicType

Constants

• MICRO_TO_NANO
  Returns how many nanos are in a microsecond
• MS_TO_NANO
  Returns how many nanos are in a millisecond
• S_TO_NANO
  Returns how many nanos are in a second

Traits

• Task

Functions

• arm_dcache_delete
• code_hash
  This function returns a u32 containing the program counter of the line of code which invokes this function.
• dsb
  Data Memory Barrier
• err
  Use this method to enter a system-wide failure event.
• isb
  Instruction Synchronization Barrier
• pendsv
  This method will intiate a pendsv interrupt
• wait_exact_ns
  This method will wait a certain amount of milliseconds by calculating how many nop commands it will take and issuing them sequentially.
• wait_ns
  Waits for a specific amount of nanoseconds.