File ns_energy_monitor.c

File List > neuralSPOT > neuralspot > ns-utils > src > ns_energy_monitor.c
//*****************************************************************************
//
//
//*****************************************************************************

//*****************************************************************************
//
// Copyright (c) 2021, Ambiq Micro, Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// Third party software included in this distribution is subject to the
// additional license terms as defined in the /docs/licenses directory.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// This is part of revision release_sdk_4_0_1-bef824fa27 of the AmbiqSuite Development Package.
//
//*****************************************************************************
#include "ns_energy_monitor.h"
#include "am_bsp.h"
#include "am_mcu_apollo.h"
#include "am_util.h"

//*****************************************************************************
// Power Monitor State Signalling
// This routine outputs a 2 bit state to GPIO pins that can be monitored
// by power measurement tools such as Joulescope
//*****************************************************************************

static bool g_ns_power_monitor_enabled = false;

void
ns_init_power_monitor_state(void) {
    am_hal_gpio_pinconfig(NS_POWER_MONITOR_GPIO_0, am_hal_gpio_pincfg_output);
    am_hal_gpio_pinconfig(NS_POWER_MONITOR_GPIO_1, am_hal_gpio_pincfg_output);
    ns_set_power_monitor_state(NS_IDLE);
    g_ns_power_monitor_enabled = true;
}

void
ns_set_power_monitor_state(uint8_t state) {
    if (g_ns_power_monitor_enabled) {
        am_hal_gpio_state_write(NS_POWER_MONITOR_GPIO_0, state & 0x01);
        am_hal_gpio_state_write(NS_POWER_MONITOR_GPIO_1, (state >> 1) & 0x01);
    }
}