RE: Using NRF52832 chip + freeRTOS development encounters the problem of getting stuck in idle tasks

hmolesworth — Sat, 25 Jan 2025 17:56:02 GMT

Might not help, but maybe try changing the FPU event clear to this (in case optimisation issue):

        volatile uint32_t fpscr;
        fpscr = __get_FPSCR();
        /*
         * Clear FPU exceptions.
         * Without this step, the FPU interrupt is marked as pending,
         * preventing system from sleeping. Exceptions cleared:
         * - IOC - Invalid Operation cumulative exception bit.
         * - DZC - Division by Zero cumulative exception bit.
         * - OFC - Overflow cumulative exception bit.
         * - UFC - Underflow cumulative exception bit.
         * - IXC - Inexact cumulative exception bit.
         * - IDC - Input Denormal cumulative exception bit.
         */
        __set_FPSCR(fpscr & ~0x9Fu);
        __DSB();  // or just __DMB();