You have to init the memory used for the stack: Have a look in the normal tasking init , and you will see the call out to init the stack, that you neeed to call.
Also Assuming ARM it has to be 8 byte aligned. So you need attributes on your variable called stack to set the alignment. David -----Original Message----- From: Fotis Panagiotopoulos [mailto:f.j.pa...@gmail.com] Sent: Saturday, February 06, 2021 6:08 AM To: dev@nuttx.apache.org Subject: Task with statically allocated stack Hi, I am trying to create a new task using a statically allocated stack. Here is my code: static struct task_tcb_s tcb; static uint8_t stack[CONFIG_NETWORK_THREAD_STACKSIZE] void start_my_thread() { memset(&tcb, 0, sizeof(struct task_tcb_s)); tcb.cmn.flags = TCB_FLAG_TTYPE_TASK; int ret = nxtask_init(&tcb, "Network", CONFIG_NETWORK_THREAD_PRIORITY, stack, CONFIG_NETWORK_THREAD_STACKSIZE, network_th, NULL); if (ret < 0) { //error handling... } nxtask_activate(&tcb.cmn); } This new thread seems to be working OK (I haven't done any extensive testing yet), but running ps in nsh yields: 5 80 FIFO Task --- Ready 00000000 008156 008156 100.0%! Network The stack is always reported as 100% full. I tried increasing it to excessive numbers but it still. I believe that I have configured something wrong? Or this is not the correct way to init a task with a static stack?
