Nut/OS is a small real time operating system aimed at 8-bit CPUs.
It supports the following features:
A reasonably large hardware resource might be:
Modules | |
System Initialization | |
Nut/OS initialization. | |
Thread Management | |
Coperative multi-threading support. | |
Event Management | |
Thread synchronization support. | |
Recursive Mutex | |
Thread synchronization support. | |
Semaphore | |
Thread synchronization support. | |
Heap Management | |
Dynamic memory management. | |
Banked Memory Management | |
Banked RAM support. | |
I/O Management | |
Input and output device functions. | |
Timer Management | |
Asynchronous timer support. | |
Defines | |
#define | __byte_swap2(val) |
#define | __byte_swap4(val) |
#define | htons(x) |
Convert short value from host to network byte order. | |
#define | htonl(x) |
Convert long value from host to network byte order. | |
#define | ntohs(x) |
Convert short value from network to host byte order. | |
#define | ntohl(x) |
Convert long value from network to host byte order. | |
Typedefs | |
typedef unsigned char | u_char |
Unsigned 8-bit value. | |
typedef unsigned short | u_short |
Unsigned 16-bit value. | |
typedef unsigned int | u_int |
Unsigned int value. | |
typedef unsigned long | u_long |
Unsigned 32-bit value. | |
typedef unsigned long long | u_longlong |
Unsigned 64-bit value. | |
typedef void * | HANDLE |
Void pointer. | |
typedef unsigned char | ureg_t |
Unsigned register type. | |
typedef unsigned char | reg_t |
Signed register type. | |
typedef unsigned short | uptr_t |
Unsigned pointer value type. |
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Signed register type. Similar to ureg_t, but for signed values from -128 to +127. |
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Unsigned pointer value type. The size of this type is at least the size of a memory pointer. For CPUs with 16 address bits this will be an unsigned short. |
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Unsigned register type. The size of this type is equal to the size of a register, the hardware datapath or whatever might fit to give optimum performance for values from 0 to 255. Typically 8 bit CPUs will use unsigned characters, 16 bit CPUs will use unsigned shorts etc. |