/*
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* Copyright (c) 2019-2023 Beijing Hanwei Innovation Technology Ltd. Co. and
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* its subsidiaries and affiliates (collectly called MKSEMI).
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into an MKSEMI
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* integrated circuit in a product or a software update for such product,
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* must reproduce the above copyright notice, this list of conditions and
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* the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of MKSEMI nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* MKSEMI integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be
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* reverse engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY MKSEMI "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL MKSEMI OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "mk_acmp.h"
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#include "mk_power.h"
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#include "mk_trace.h"
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#include "mk_reset.h"
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#include "mk_calib.h"
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#include "mk_wdt.h"
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#include "libc_rom.h"
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#include "board.h"
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volatile static uint8_t acmp_done = 0;
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static void acmp_callback(void *dev, uint32_t level)
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{
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acmp_done = 1;
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}
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static struct ACMP_CFG_T usr_acmp_cfg = {
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.channel_p = ACMP_EXTPIN5, // positive: acomp0-->GPIO3, acomp1-->GPIO0
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.channel_n = ACMP_EXTPIN6, // negative: acomp0-->GPIO4, acomp1-->GPIO1
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.int_en = true,
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.edge_int = ACMP_BOTHEDGE_INT,
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.hyst_en = true,
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.callback = acmp_callback,
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};
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/*
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* Connect GND to analog comparator's positive pin first, and then negative pin, you can see compare result in log.
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* Repeat the operation above, you can see the chip being waken up from deep power down by comparator in log.
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* Tips:
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* When you download new firmware, if your jlink could not attach to mcu, please make sure you have connected
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* Reset pin of the jtag interface.
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*/
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int main(void)
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{
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board_clock_run();
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board_pins_config();
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board_debug_console_open(TRACE_PORT_UART0);
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// Reset reason
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reset_cause_get();
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reset_cause_clear();
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// Chip calibration
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calib_chip();
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// Disable watchdog timer
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wdt_close(WDT_ID0);
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LOG_INFO(TRACE_MODULE_APP, "ACMP example\r\n");
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gpio_open();
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board_configure();
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acmp_open(ACMP_ID0, &usr_acmp_cfg);
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power_init();
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power_wakeup_enable(POWER_WAKEUP_BY_ACMP0, POWER_WAKEUP_LEVEL_NONE);
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power_mode_request(POWER_UNIT_APP, POWER_MODE_DEEP_POWER_DOWN);
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while (1)
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{
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if (acmp_done == 1)
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{
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acmp_done = 0;
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LOG_INFO(TRACE_MODULE_APP, "ACMP%d , Compare the results %d\r\n", ACMP_ID0, acmp_get(ACMP_ID0));
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}
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power_manage();
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}
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// acmp_close(ACMP_ID0);
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}
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