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* FILE NAME: Scheduler.c
* DESCRIPTION:
*
* DATE BEGUN:
* BY:
* PRODUCT NAME:
* APPLICATION:
* TARGET H/W:
* DOC REF:
*****************************************************************************
*/
/*****************************************************************************
** #include
*****************************************************************************/
#include "stdint.h"
#include "stdbool.h"
//! \name finit state machine state
//! @{
typedef enum {
fsm_rt_err = -1, //!< fsm error, error code can be get from other interface
fsm_rt_cpl = 0, //!< fsm complete
fsm_rt_on_going = 1, //!< fsm on-going
} fsm_rt_t;
//! @}
static fsm_rt_t task_print(void);
static fsm_rt_t task_delay(void);
static fsm_rt_t print(void);
static fsm_rt_t delay(void);
static bool s_bFlag = false;
/****************************************************************************/
/**
* Function Name: void scheduler( void )
* Description: none
*
* Param: none
* Return: none
* Author:
****************************************************************************/
void scheduler( void )
{
while(!serial_out('z'));
while(!serial_out('t'));
while(!serial_out('2'));
while(!serial_out('0'));
while(!serial_out('1'));
while(!serial_out('2'));
while(!serial_out('\r'));
while(!serial_out('\n'));
/* loop here forever */
while(1){
task_print();
task_delay();
}
}
#define TASK_PRINT_RESET_FSM() \
do{ \
s_tTaskPrintState = TASK_PRINT_START; \
}while(0)
static fsm_rt_t task_print(void)
{
static enum{
TASK_PRINT_START=0,
TASK_PRINT_ING
}s_tTaskPrintState = TASK_PRINT_START;
switch (s_tTaskPrintState){
case TASK_PRINT_START:
if(s_bFlag){
s_tTaskPrintState = TASK_PRINT_ING;
}
break;
case TASK_PRINT_ING:
if(fsm_rt_cpl == print()){
TASK_PRINT_RESET_FSM();
return fsm_rt_cpl;
}
break;
}
return fsm_rt_on_going;
}
#define TASK_DELAY_RESET_FSM() \
do{ \
s_tTaskDelayState = TASK_DELAY_START; \
}while(0)
static fsm_rt_t task_delay(void)
{
static enum{
TASK_DELAY_START=0,
TASK_DELAY_ING
}s_tTaskDelayState = TASK_DELAY_START;
switch(s_tTaskDelayState){
case TASK_DELAY_START:
s_bFlag = false;
case TASK_DELAY_ING:
if(fsm_rt_cpl == delay()){
s_bFlag = true;
TASK_DELAY_RESET_FSM();
return fsm_rt_on_going;
}
}
return fsm_rt_on_going;
}
#define PRINT_RESET_FSM() \
do{ \
s_tPrintState = PRINT_START; \
}while(0)
static fsm_rt_t print(void)
{
static enum{
PRINT_START = 0,
PRINT_OUT_H,
PRINT_OUT_E,
PRINT_OUT_L1,
PRINT_OUT_L2,
PRINT_OUT_O,
PRINT_OUT_R,
PRINT_OUT_N
}s_tPrintState = PRINT_START;
switch(s_tPrintState){
case PRINT_START:
s_tPrintState = PRINT_OUT_H;
case PRINT_OUT_H:
if(serial_out('h')){
s_tPrintState = PRINT_OUT_E;
}
break;
case PRINT_OUT_E:
if(serial_out('e')){
s_tPrintState = PRINT_OUT_L1;
}
break;
case PRINT_OUT_L1:
if(serial_out('l')){
s_tPrintState = PRINT_OUT_L2;
}
break;
case PRINT_OUT_L2:
if(serial_out('l')){
s_tPrintState = PRINT_OUT_O;
}
break;
case PRINT_OUT_O:
if(serial_out('o')){
s_tPrintState = PRINT_OUT_R;
}
break;
case PRINT_OUT_R:
if(serial_out('\r')){
s_tPrintState = PRINT_OUT_N;
}
break;
case PRINT_OUT_N:
if(serial_out('\n')){
PRINT_RESET_FSM();
return fsm_rt_cpl;
}
break;
}
return fsm_rt_on_going;
}
#define DELAY_RESET_FSM() \
do{ \
s_tDelaytState = DELAY_START; \
}while(0)
#define DEALY_TIME (0x2ffff)
static fsm_rt_t delay(void)
{
static enum{
DELAY_START = 0,
DELAY
}s_tDelaytState = DELAY_START;
static uint32_t s_wDelayCounter = 0;
switch(s_tDelaytState){
case DELAY_START:
s_wDelayCounter = 0;
s_tDelaytState = DELAY;
case DELAY:
s_wDelayCounter ++;
if(s_wDelayCounter > DEALY_TIME){
s_wDelayCounter = 0;
DELAY_RESET_FSM();
return fsm_rt_cpl;
}
break;
}
return fsm_rt_on_going;
}
/*****************************************************************************
** End File
*****************************************************************************/
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