103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*!
|
|
\file main.c
|
|
\brief reset source detect example
|
|
|
|
\version 2021-10-30, V1.0.0, firmware for GD32W51x
|
|
*/
|
|
|
|
/*
|
|
Copyright (c) 2021, GigaDevice Semiconductor Inc.
|
|
|
|
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.
|
|
|
|
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.
|
|
*/
|
|
|
|
#include "gd32w51x.h"
|
|
#include "systick.h"
|
|
#include <stdio.h>
|
|
#include "gd32w515p_eval.h"
|
|
|
|
void mcu_software_reset(void);
|
|
|
|
/*!
|
|
\brief main function
|
|
\param[in] none
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
int main(void)
|
|
{
|
|
/* initialize the Systick, USART and key */
|
|
systick_config();
|
|
|
|
gd_eval_com_init(EVAL_COM0);
|
|
|
|
gd_eval_key_init(KEY_TAMPER_WAKEUP, KEY_MODE_GPIO);
|
|
|
|
if(RESET != rcu_flag_get(RCU_FLAG_PORRST)){
|
|
printf("\r\nPower reset generated");
|
|
}
|
|
|
|
if(RESET != rcu_flag_get(RCU_FLAG_SWRST)){
|
|
printf("\r\nSoftware reset generated");
|
|
}
|
|
|
|
if((RESET != rcu_flag_get(RCU_FLAG_EPRST)) && (RESET == rcu_flag_get(RCU_FLAG_PORRST))){
|
|
printf("\r\nExternal PIN reset generated");
|
|
}
|
|
/* clear all reset flags */
|
|
rcu_all_reset_flag_clear();
|
|
|
|
while(1){
|
|
/* press Wakeup key to software reset mcu */
|
|
if(RESET == gd_eval_key_state_get(KEY_TAMPER_WAKEUP)){
|
|
delay_1ms(100);
|
|
if(RESET == gd_eval_key_state_get(KEY_TAMPER_WAKEUP)){
|
|
delay_1ms(50);
|
|
mcu_software_reset();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief software reset mcu
|
|
\param[in] none
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void mcu_software_reset(void)
|
|
{
|
|
/* set FAULTMASK */
|
|
__set_FAULTMASK(1);
|
|
NVIC_SystemReset();
|
|
}
|
|
|
|
/* retarget the C library printf function to the USART */
|
|
int fputc(int ch, FILE *f)
|
|
{
|
|
usart_data_transmit(EVAL_COM0, (uint8_t)ch);
|
|
while(RESET == usart_flag_get(EVAL_COM0, USART_FLAG_TBE));
|
|
return ch;
|
|
}
|