User guide

Neuron Tools Errors Guide 67
NCC# Description
176 This event duplicates or overlaps a previous one [NCC#176]
In many cases, use of a when clause containing an event that is a duplicate
or an overlap of a previous event expression would prevent the associated
task from being executed, or may cause anomalous behavior, with one task
being executed sometimes, and the other being executed the rest of the
time.
(This latter behavior would occur as the result of round-robin execution by
the Neuron Chip firmware scheduler, if the scheduler_reset feature were
not used.)
177 Recommend use of ‘scheduler_reset’ feature [NCC#177]
The compiler makes this recommendation when there is a possibility of
anomalous execution of different tasks because the tasks' respective when
clauses are not mutually exclusive.
178 Cannot have any non-polled output network variables when more than 14
bindable message tags are defined [NCC#178]
A Neuron Chip has up to 15 address table entries. Each bindable message
tag consumes one address table entry, whether bound or not. Network
variables can share address table entries, but there must be at least one
available. This message indicates that there are no entries available for
network variables because message tags are consuming all of the address
table entries.
179 Incorrect use of ‘void’ in function prototype [NCC#179]
The void type has no size. It cannot be used as an argument of the sizeof
operator, nor can it be used to declare a variable. Its only legal uses are in
declaring function return types, declaring that a function has no
parameters, and in combination with * to define a type void * (a wildcard
pointer type).
180 Function parameter may not be ‘struct’ or ‘union’ type [NCC#180]
Neuron C does not support passing struct or union types by value as
function parameters. You may use a pointer to the structure or union as a
function parameter.
181 Function declarations must use prototypes [NCC#181]
Neuron C is more restrictive than ANSI C in this area. The Neuron Chip's
stack machine architecture does not permit calling undeclared functions
with unknown numbers of parameters.