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08b9c371a0
* Fix histogram test Use different Start index so skipped start_index copy would not get unnoticed in the test. * Fix several test_vector_* for valid data Instead of comparing the moved-from data which is invalid, compare with the valid initial_data. * Fix test_vector to check for the correct iterator position after erase This was done before, but a recent change dropped it. * Fix bit_stream: Guard nbits > 0 to prevent division by zero * Cleanup --------- Co-authored-by: John Wellbelove <jwellbelove@users.noreply.github.com>
1.5 KiB
1.5 KiB
| title |
|---|
| fixed_iterator |
{{< callout type="info">}}
Header: fixed_iterator.h
Since: TBC
{{< /callout >}}
An iterator where increments and decrements are null operations.
Can be used to copy to or from a fixed address such as a register.
Constructor
template <typename TIterator>
etl::fixed_iterator();
template <typename TIterator>
etl::fixed_iterator(TIterator it);
template <typename TIterator>
etl::fixed_iterator(const etl::fixed_iterator&);
Access
Titerator get() const;
Description
Get the internal iterator.
void get(TIterator it);
Description
Set the iterator.
Operators
typename etl::iterator_traits<TIterator>::value_type operator *()
const typename etl::iterator_traits<TIterator>::value_type operator *() const
Description
Dereference operators
TIterator operator ->()
const TIterator operator ->() const
Description
Member dereference operators
operator TIterator() const
Description
Conversion operator
Example
etl::vector<char, 32> buffer;
const char* UART_READ = (const char*) 0x1000;
const char* UART_WRITE = (const char*) 0x1001;
etl::fixed_iterator<char*> uart_read(UART_READ);
etl::fixed_iterator<char*> uart_write(UART_WRITE);
// Read 20 characters from the port.
std::copy_n(uart_read, 20, std::back_inserter(buffer));
// Write the buffer of characters to the port.
std::copy(buffer.begin(), buffer.end(), uart_write);