Tickless FreeRTOS in SDK 10.0 + App_Uart

[jmag999]

I am testing the freertos port, based on the hrs example in the new SDK 10.0. I have run into an issue while using the uart during long transmission sequences (where the fifo is filled). It appears that the interrupt is being disabled when entering tickless mode, but the "uart ready" event never fires after this occurs. Disabling tickless mode causes the system to run properly. I tried to increase the priority of the uart interrupt, but this did not resolve the problem. Any ideas?

[Einar Thorsrud]

Can you upload your modified example that demonstrates this behavior?

[jmag999]

Attached is a modified project that shows the problem.

I am running IAR 7.40 with project config ble_app_freertos_s110_pca10028.

To show the problem, I have added a task that simply prints out 300 characters (one at a time), then sleeps for 5s. With tickless enabled, the write fails on the 2nd try. With tickless disabled, everything works.

ble_app_hrs_freertos.zip

[Einar Thorsrud]

The main.c in the archive you uploaded is identical with the one in the SDK. Did you upload the correct files?

[jmag999]

ble_app_hrs_freertos.zipTry this zip file.

[Radoslaw Koppel]

I am working on it - as far as I can see the UART interrupt is disabled after slepping. The problem is it happens only when free running the code. Not when I am trying to go thorough it step by step. So the problem is tricky one.