nobody wrote on Thursday, March 01, 2007:
I hope this time it is more understandable:
I create a task:
-> xTaskCreate(v_task_Heartbeat,(const signed portCHAR * const) "heartbeat", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 1, &x_task_Heartbeat_Handle);
which should do:
->void v_task_Heartbeat(void *pvParameters)
{
pvParameters = 0;
HEARTBEAT_LED_PORT = HEARTBEAT_LED; // set to output
// endless loop
for(;
{
vTaskDelay(HEARTBEAT_LED_DELAY); // wait for 500 ticks (0.5s)
HEARTBEAT_LED_PORT_CLR = HEARTBEAT_LED; // turn on LED
vTaskDelay(HEARTBEAT_LED_DELAY); // wait for 500 ticks (0.5s)
HEARTBEAT_LED_PORT_SET = HEARTBEAT_LED; // turn off LED
}
}
I use openocd to debug the program and when i reach the line: vTaskDelay(…), the programm jumps into the function. My task get delayed, but never wake up. When i step further the programm calls the Idle-Task an check if there are other task ready to run. Then i let the programm continue and after a short time i hold it. The programm now has reached an abort-error-loop.
Now i increase the Task-Priority to 2 and create a new task:
->void v_task_idle_2(void *pvParameters)
{
pvParameters = 0;
u32 i;
// endless loop
for(;
{
i++;
}
}
with a Priotity of tskIDLE_PRIRITY+1. If i run this programm, everything seems to run normal an my LED is blinking.
I don’t use an idle hook.
Some more settings:
->
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 0
#define configCPU_CLOCK_HZ ( ( unsigned portLONG ) 58982400 ) /* =12Mhz xtal multiplied by 4 using the PLL. */
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 8 )
#define configMINIMAL_STACK_SIZE ( ( unsigned portSHORT ) 150 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 10 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 0
#define INCLUDE_vTaskCleanUpResources 0
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
)