83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/*!
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\file main.c
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\brief FWDGT key demo
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\version 2021-10-30, V1.0.0, firmware for GD32W51x
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*/
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/*
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Copyright (c) 2021, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include "gd32w51x.h"
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#include "systick.h"
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#include "gd32w515p_eval.h"
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void irc32k_config(void);
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/*!
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\brief main function
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\param[in] none
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\param[out] none
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\retval none
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*/
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int main(void)
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{
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/* configurate systick */
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systick_config();
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/* configurate LED */
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gd_eval_led_init(LED1);
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gd_eval_led_init(LED2);
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/* configurate the key which is used to reload FWDGT */
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gd_eval_key_init(KEY_TAMPER_WAKEUP, KEY_MODE_EXTI);
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delay_1ms(500);
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/* enable write access to FWDGT_PSC and FWDGT_RLD registers.
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FWDGT counter clock: 32KHz(IRC32K) / 64 = 0.625 KHz */
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fwdgt_config(625, FWDGT_PSC_DIV64);
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fwdgt_enable();
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/* check if the system has resumed from FWDGT reset */
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if(RESET != rcu_flag_get(RCU_FLAG_FWDGTRST)){
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/* turn on LED2 */
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gd_eval_led_on(LED2);
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/* clear the FWDGT reset flag */
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rcu_all_reset_flag_clear();
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while(1){
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}
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}else{
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/* turn on LED1 */
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gd_eval_led_on(LED1);
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}
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while(1){
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}
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}
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