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2.1 KiB
2.1 KiB
DEVFULL
Arduino library for a /dev/full stream.
Description
The experimental library implements a stream class that mimics the /dev/full device of a Linux system. You can write nothing to it as it is always full. Every read data will return the value zero, just like /dev/zero.
Calls to print() and println() will be split up in multiple calls to write(). This causes a return value of n x -28 ==> mostly a number in the 65xxx range
See - https://en.wikipedia.org/wiki//dev/full
Versions
- 0.1.0 is a minimal implementation.
- 0.1.1 implements INT_MAX
Interface
- DEVFULL() constructor, sets the timeout to zero.
- int available() always return INT_MAX = platform dependant.
- int peek() always returns 0.
- int read() always returns 0.
- void flush() does nothing but keeps some compilers happy.
- size_t write(const uint8_t data) always returns -28 (ENOSPC).
- size_t write(const uint8_t *buffer, size_t size) implements print interface. Always returns -28 (ENOSPC).
Error code
| value | name | description |
|---|---|---|
| -28 | ENOSPC | No space available for writing onto the "storage device". |
Operation
Use with care.
See examples.
Future
- improve documentation
- improve code
- test different platforms.