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Diffstat (limited to 'FreeRTOS/Demo/AVR_ATMega4809_IAR/main_minimal.c')
| -rw-r--r-- | FreeRTOS/Demo/AVR_ATMega4809_IAR/main_minimal.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/AVR_ATMega4809_IAR/main_minimal.c b/FreeRTOS/Demo/AVR_ATMega4809_IAR/main_minimal.c new file mode 100644 index 000000000..c3251dbb9 --- /dev/null +++ b/FreeRTOS/Demo/AVR_ATMega4809_IAR/main_minimal.c @@ -0,0 +1,157 @@ +#include "FreeRTOS.h" +#include "task.h" +#include "croutine.h" + +#include "PollQ.h" +#include "integer.h" +#include "serial.h" +#include "comtest.h" +#include "crflash.h" +#include "partest.h" +#include "regtest.h" + +/* Priority definitions for most of the tasks in the demo application. Some +tasks just use the idle priority. */ +#define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 ) +#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 ) +#define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 ) + +/* Baud rate used by the serial port tasks. */ +#define mainCOM_TEST_BAUD_RATE ( ( unsigned long ) 9600 ) + +/* LED used by the serial port tasks. This is toggled on each character Tx, +and mainCOM_TEST_LED + 1 is toggles on each character Rx. */ +#define mainCOM_TEST_LED ( 6 ) + +/* LED that is toggled by the check task. The check task periodically checks +that all the other tasks are operating without error. If no errors are found +the LED is toggled. If an error is found at any time the LED is never toggles +again. */ +#define mainCHECK_TASK_LED ( 5 ) + +/* The period between executions of the check task. */ +#define mainCHECK_PERIOD ( ( TickType_t ) 1000 / portTICK_PERIOD_MS ) + +/* An address in the EEPROM used to count resets. This is used to check that +the demo application is not unexpectedly resetting. */ +#define mainRESET_COUNT_ADDRESS ( 0x1400 ) + +/* The number of coroutines to create. */ +#define mainNUM_FLASH_COROUTINES ( 3 ) + +/* + * The task function for the "Check" task. + */ +static void vErrorChecks( void *pvParameters ); + +/* + * Checks the unique counts of other tasks to ensure they are still operational. + * Flashes an LED if everything is okay. + */ +static void prvCheckOtherTasksAreStillRunning( void ); + +/* + * Called on boot to increment a count stored in the EEPROM. This is used to + * ensure the CPU does not reset unexpectedly. + */ +static void prvIncrementResetCount( void ); + +void main_minimal( void ) +{ + prvIncrementResetCount(); + + /* Create the standard demo tasks. */ + vStartIntegerMathTasks( tskIDLE_PRIORITY ); + vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED ); + vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY ); + vStartRegTestTasks(); + + /* Create the tasks defined within this file. */ + xTaskCreate( vErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL ); + + /* Create the co-routines that flash the LED's. */ + vStartFlashCoRoutines( mainNUM_FLASH_COROUTINES ); + + /* In this port, to use preemptive scheduler define configUSE_PREEMPTION + as 1 in portmacro.h. To use the cooperative scheduler define + configUSE_PREEMPTION as 0. */ + vTaskStartScheduler(); +} + +void init_minimal( void ) +{ + /* Configure UART pins: PB0 Rx, PB1 Tx */ + PORTB.DIR &= ~PIN1_bm; + PORTB.DIR |= PIN0_bm; + + vParTestInitialise(); +} + +static void vErrorChecks( void *pvParameters ) +{ +static volatile unsigned long ulDummyVariable = 3UL; + + /* The parameters are not used. */ + ( void ) pvParameters; + + /* Cycle for ever, delaying then checking all the other tasks are still + operating without error. */ + for( ;; ) + { + vTaskDelay( mainCHECK_PERIOD ); + + /* Perform a bit of 32bit maths to ensure the registers used by the + integer tasks get some exercise. The result here is not important - + see the demo application documentation for more info. */ + ulDummyVariable *= 3; + + prvCheckOtherTasksAreStillRunning(); + } +} +/*-----------------------------------------------------------*/ + +static void prvCheckOtherTasksAreStillRunning( void ) +{ +static portBASE_TYPE xErrorHasOccurred = pdFALSE; + + if( xAreIntegerMathsTaskStillRunning() != pdTRUE ) + { + xErrorHasOccurred = pdTRUE; + } + + if( xAreComTestTasksStillRunning() != pdTRUE ) + { + xErrorHasOccurred = pdTRUE; + } + + if( xArePollingQueuesStillRunning() != pdTRUE ) + { + xErrorHasOccurred = pdTRUE; + } + + if( xAreRegTestTasksStillRunning() != pdTRUE ) + { + xErrorHasOccurred = pdTRUE; + } + + if( xErrorHasOccurred == pdFALSE ) + { + /* Toggle the LED if everything is okay so we know if an error occurs even if not + using console IO. */ + vParTestToggleLED( mainCHECK_TASK_LED ); + } +} +/*-----------------------------------------------------------*/ + +static void prvIncrementResetCount( void ) +{ +static unsigned char __eeprom ucResetCount @ mainRESET_COUNT_ADDRESS; + + ucResetCount++; +} +/*-----------------------------------------------------------*/ + +void vApplicationIdleHook( void ) +{ + vCoRoutineSchedule(); +}
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