main loop i2s

main5.c

for (;;)
    {
        // start I2S
        if(g_i2s_start && !g_i2s_running) {
            err_code = nrf_drv_i2s_start(0, m_buffer_tx, I2S_BUFFER_SIZE, 0);
            APP_ERROR_CHECK(err_code);
            g_i2s_running = true;
        }

        // stop I2S
        if(!g_i2s_start && g_i2s_running) {
            nrf_drv_i2s_stop();
            g_i2s_running = false;
        }

        nrf_delay_ms(250);

        // update 
        if (g_i2s_running) {
            nled = (nled + 1) % NLEDS;                
            set_led_data();
        }
    }