Hi everyone,
I’m trying to run FreeRTOS on a Nios 2 processor without success.
I’m using Quartus Prime v16.1, and my hardware layer is composed by:
1 Nios 2 gen 2 CPU;
1 JTAG
1 UART
1 timer interval (named sys_clk)
1 onchip memory module
1 parallel led interface
I generate the .sopcinfo thorugh QSYS and Quartus, then I create e new bsp from eclipse by using the altera HAL type. After that, I change ENHANCED interrupt with LEGACY one.
Finally a new blank project was created on the previous generated bsp.
Now the FreeRTOS release is copied inside the Eclipse project, all files are linked and compiled.
I try to run a simple task by driving two leds, but the FreeRTOS is not running. All leds are fixed and the system seems freezed.
Have you tryied to run FreeRTOS on Nios processor?
Thank you.
[code]
include “uart.h”
include “alteraavalonpio_regs.h”
/* FreeRTOS */
include “FreeRTOS.h”
include “task.h”
include “queue.h”
bool UARTrxFLAG;
char UARTrx;
unsigned int delay;
static unsigned int LEDctrl;
/* definizione funzioni */
static void prvSetupHardware( void );
static void prvLEDtask( void *pvParameters );
static void prvSetupHardware( void )
{
LEDctrl = 0x01;
}
int main()
{
prvSetupHardware();
IOWR
ALTERAAVALON
PIODIRECTION(PIO
LEDBASE, 0x1F);
IOWR
ALTERAAVALON
PIODATA(PIO
LEDBASE, 0x00);
xTaskCreate(prvLEDtask, "LEDtask", 100, (void*) NULL, tskIDLE_PRIORITY + 1, NULL);
/* start scheduler */
vTaskStartScheduler();
/* infinite loop */
for( ;; );
}
static void prvLEDtask( void *pvParameters )
{
for( ;; )
{
LEDctrl ^= 0x03;
IOWR_ALTERA_AVALON_PIO_DATA(PIO_LED_BASE, LEDctrl);
vTaskDelay(500 / portTICK_PERIOD_MS);
}
}
/
———————————————————–/
void vApplicationStackOverflowHook( void )
{
/* Look at pxCurrentTCB to see which task overflowed its stack. */
for( ;; )
{
asm( “break” );
}
}
/
———————————————————–/
void
generalexception_handler( unsigned long ulCause, unsigned long ulStatus )
{
/* This overrides the definition provided by the kernel. Other exceptions
should be handled here. */
for( ;; )
{
asm( “break” );
}
}
/*———————————————————–*/
[/code]
