ti/error.h

#include <ti/error.h>

Exceptions in languages like Python provide a structured way of handling rare error conditions. TI calls their implementation of this idea error handlers.

When the OS encounters an unsusal condition such as divide-by-zero or out-of-memory, it looks for an active error handler. If no active error handlers exist, the OS will display the ERR: screen. If an active error handler does exist, it gets control instead of showing the ERR: screen.

Unlike exception handlers, TI’s error handlers do not differentiate between error codes; the same error handler is called for all errors. However, error handlers do support nesting. If an handler decides that it can’t handle an error, it can rethrow it.

Warning

When a TI error handler is invoked, C++ destructors are not run even if the handler is outside the current scope! Therefore, you must be very careful with object creation while an error handler is active.

Similarly, although the toolchain supports C++, it does not support C++ exceptions, and TI error handlers are not a substitute for C++ exceptions.

API Documentation

API Documentation 

TI CE OS errors; this is all the ERR:A MESSAGE screen stuff. You can use this to show custom error screens, as well as intercept errors to prevent the error screen from showing.

Authors

Matt “MateoConLechuga” Waltz

Jacob “jacobly” Young

Defines

os_AppErr1: String [1] for custom error.

os_AppErr2: String [2] for custom error.

OS_E_EDIT

OS_E_MASK

OS_E_OVERFLOW

OS_E_DIVBY0

OS_E_SINGULARMAT

OS_E_DOMAIN

OS_E_INCREMENT

OS_E_BREAK

OS_E_NONREAL

OS_E_SYNTAX

OS_E_DATATYPE

OS_E_ARGUMENT

OS_E_DIMMISMATCH

OS_E_DIMENSION

OS_E_UNDEFINED

OS_E_MEMORY

OS_E_INVALID

OS_E_ILLEGALNEST

OS_E_BOUND

OS_E_GRAPHRANGE

OS_E_ZOOM

OS_E_LABEL

OS_E_STAT

OS_E_SOLVER

OS_E_SINGULARITY

OS_E_SIGNCHANGE

OS_E_ITERATIONS

OS_E_BADGUESS

OS_E_STATPLOT

OS_E_TOLTOOSMALL

OS_E_RESERVED

OS_E_MODE

OS_E_LNKERR

OS_E_LNKMEMERR

OS_E_LNKTRANSERR

OS_E_LNKDUPERR

OS_E_LNKMEMFULL

OS_E_UNKNOWN

OS_E_SCALE

OS_E_IDNOTFOUND

OS_E_NOMODE

OS_E_VALIDATION

OS_E_LENGTH

OS_E_APPLICATION

OS_E_APPERR1

OS_E_APPERR2

OS_E_EXPIREDAPP

OS_E_BADADD

OS_E_ARCHIVED

OS_E_VERSION

OS_E_ARCHFULL

OS_E_VARIABLE

OS_E_DUPLICATE

Functions

void os_ThrowError(uint8_t error) __attribute__((noreturn))

Throws an OS error.

Parameters: error – [in] Error code to throw

int os_PushErrorHandler(void) __attribute__((returns_twice))

This function can return twice (like setjmp).

First return always happens with a return value of 0. Second return only happens if an error occurs before os_PopErrorHandler is called, with the errNo as the return value.

int errno = os_PushErrorHandler();
if (errno) {
    // handle error, but no longer under the protection of the error handler so do not call os_PopErrorHandler()
} else {
    // run some code that may error
    os_PopErrorHandler();
}

ti/error.h

API Documentation

API Documentation 