nobody wrote on Wednesday, December 13, 2006:
AT91SAM7XC256 EK, and freeRTOS with uIP.
I am trying to increase tick frequency in order to run some uIP tests, as i am aweare of limitations due to this change. There is only uIP task i left ro run.
Here are the changes i’ve made:
#define configTICK_RATE_HZ ((portTickType)5000) in FreeRTOSConfig.h
#define portTICK_RATE_MS ((portTickType)5000/configTICK_RATE_HZ) in portmacro.h
#define portPIT_COUNTER_VALUE (((configCPU_CLOCK_HZ / portPIT_CLOCK_DIVISOR)/5000UL) * portTICK_RATE_MS ) in port.c
So the tick period would be 200 us, and it appears that EMAC initialisation is significantly longer ( around 30 s )and some other strange things happens. When i set tick to be 100us uIP stops working.
I’am wondering if this is correct way to increase tick rate? Or if freeRTOS is designed to support higher tick than 1ms, at all? ( i guess not)