/*
* acx.h
*
* Created: 3/20/2014 11:08:37 AM
* Author: E. Frank Barry
*
*/
#ifndef ACX_H_
#define ACX_H_
#define MAX_THREADS 8
#define NUM_THREADS 8 // This must be a power of two in order to work correctly
#define STACK_CANARY 0xAA
#define T0_STACK_SIZE 256
#define T1_STACK_SIZE 256
#define T2_STACK_SIZE 256
#define T3_STACK_SIZE 256
#define T4_STACK_SIZE 256
#define T5_STACK_SIZE 256
#define T6_STACK_SIZE 256
#define T7_STACK_SIZE 256
#define STACK_MEM_SIZE (T0_STACK_SIZE + T1_STACK_SIZE + \
T2_STACK_SIZE + T3_STACK_SIZE + T4_STACK_SIZE +\
T5_STACK_SIZE + T6_STACK_SIZE + T7_STACK_SIZE)
#define T0_STACK_BASE_OFFS (T0_STACK_SIZE-1)
#define T1_STACK_BASE_OFFS (T0_STACK_BASE_OFFS+T1_STACK_SIZE)
#define T2_STACK_BASE_OFFS (T1_STACK_BASE_OFFS+T2_STACK_SIZE)
#define T3_STACK_BASE_OFFS (T2_STACK_BASE_OFFS+T3_STACK_SIZE)
#define T4_STACK_BASE_OFFS (T3_STACK_BASE_OFFS+T4_STACK_SIZE)
#define T5_STACK_BASE_OFFS (T4_STACK_BASE_OFFS+T5_STACK_SIZE)
#define T6_STACK_BASE_OFFS (T5_STACK_BASE_OFFS+T6_STACK_SIZE)
#define T7_STACK_BASE_OFFS (T6_STACK_BASE_OFFS+T7_STACK_SIZE)
#define T0_CANARY_OFFS 0
#define T1_CANARY_OFFS (T0_CANARY_OFFS+T0_STACK_SIZE)
#define T2_CANARY_OFFS (T1_CANARY_OFFS+T1_STACK_SIZE)
#define T3_CANARY_OFFS (T2_CANARY_OFFS+T2_STACK_SIZE)
#define T4_CANARY_OFFS (T3_CANARY_OFFS+T3_STACK_SIZE)
#define T5_CANARY_OFFS (T4_CANARY_OFFS+T4_STACK_SIZE)
#define T6_CANARY_OFFS (T5_CANARY_OFFS+T5_STACK_SIZE)
#define T7_CANARY_OFFS (T6_CANARY_OFFS+T6_STACK_SIZE)
#define T0_ID 0
#define T1_ID 1
#define T2_ID 2
#define T3_ID 3
#define T4_ID 4
#define T5_ID 5
#define T6_ID 6
#define T7_ID 7
#define THREAD_CONTEXT_SIZE 18 // Number of bytes (registers) saved during context switch
#ifndef __ASSEMBLER__
#ifndef bool
#include
#endif
// Make sure NULL is defined for pointers
#ifndef NULL
#define NULL ((void *)0)
#endif
// Make sure byte is defined
#ifndef byte
typedef uint8_t byte;
#endif
extern byte x_thread_id;
#define x_getTID() x_thread_id
//typedef void(* PTHREAD)(int, char * );
//—————————————————————————
// PTHREAD is a type that represents how threads are called–
// It is just a pointer to a function returning void
// that is a passed an int and a char * as parameters.
//—————————————————————————
typedef void (*PTHREAD)(void);
typedef void (*PTHREAD_ARGS)(int argc, void *argv);
//—————————————————————————
// This union is used to provide access to both bytes of a thread address
//—————————————————————————
typedef union {
PTHREAD pthread;
uint8_t addr[3]; // This works for 2560 not UNO — assumes 3-byte return address
} PTU;
typedef union {
PTHREAD_ARGS pthread;
uint8_t addr[3]; // This works for 2560 not UNO — assumes 3-byte return address
} PTU_ARGS;
//—————————————————————————
// This type is used for entries in the stack control table
//—————————————————————————
typedef struct {
uint8_t *sp;
uint8_t *spBase;
}STACK_CONTROL;
// ACX Function prototypes
void x_init(void);
void x_delay(unsigned int);
unsigned long x_gtime();
void x_schedule(void);
void x_new(uint8_t, PTHREAD , bool);
void x_new_args(uint8_t, PTHREAD_ARGS , int, char **, bool);
void x_yield(void);
uint8_t bit2mask8(uint8_t);
void x_suspend(uint8_t);
void x_resume(uint8_t);
void x_disable(uint8_t);
void x_enable(uint8_t);
void x_stack_overflow(int);
#endif
#endif /* ACX_H_ */