94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
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#include "initial.h"
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#include "gd32c10x.h"
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#include "gd32c10x_gpio.h"
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#include "gd32c10x_rcu.h"
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#include <cstdio>
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#include <stdint.h>
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#include <stdio.h>
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/* retarget the C library printf function to the USART */
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u8 USART0_init() {
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gd_eval_com_init(EVAL_COM0);
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return 1;
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}
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/*!
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\brief configure the watchdog peripheral
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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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u8 watchdog_init(u32 time) {
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u8 status = 0;
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/* configure FWDGT counter clock: 40KHz(IRC40K) / 64 = 0.625 KHz */
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/* time = reload_value / clock_frequency */
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status = fwdgt_config(time * 0.625, FWDGT_PSC_DIV64);
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fwdgt_enable();
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return status;
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}
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int fputc(int ch, FILE *f) throw() {
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usart_data_transmit(EVAL_COM0, (uint8_t)ch);
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while (RESET == usart_flag_get(EVAL_COM0, USART_FLAG_TBE))
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;
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return ch;
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}
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void unused_pin_init() {
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rcu_periph_clock_enable(RCU_GPIOA); // 使能GPIOA时钟
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rcu_periph_clock_enable(RCU_GPIOB); // 使能GPIOB时钟
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rcu_periph_clock_enable(RCU_GPIOC); // 使能GPIOC时钟
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gpio_init(GPIOA, GPIO_MODE_IPU, GPIO_OSPEED_2MHZ,
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GPIO_PIN_8 | GPIO_PIN_11 | GPIO_PIN_12);
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gpio_init(GPIOB, GPIO_MODE_IPU, GPIO_OSPEED_2MHZ,
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GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_15);
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gpio_init(GPIOC, GPIO_MODE_IPU, GPIO_OSPEED_2MHZ,
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GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15);
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gpio_bit_reset(GPIOA, GPIO_PIN_8 | GPIO_PIN_11 | GPIO_PIN_12);
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gpio_bit_reset(GPIOB, GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_15);
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gpio_bit_reset(GPIOC, GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15);
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}
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/*!
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\brief 检测并打印复位源信息
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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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u16 get_reset_cause(void) {
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u16 cause = 0;
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if (RESET != rcu_flag_get(RCU_FLAG_FWDGTRST)) {
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// printf("Free Watchdog Timer Reset\r\n");
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cause = RCU_FLAG_FWDGTRST;
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}
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if (RESET != rcu_flag_get(RCU_FLAG_EPRST)) {
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// printf("External Pin Reset\r\n");
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cause = RCU_FLAG_EPRST;
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}
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if (RESET != rcu_flag_get(RCU_FLAG_PORRST)) {
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// printf("Power Reset\r\n");
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cause = RCU_FLAG_PORRST;
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}
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if (RESET != rcu_flag_get(RCU_FLAG_WWDGTRST)) {
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// printf("Window Watchdog Timer Reset\r\n");
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cause = RCU_FLAG_WWDGTRST;
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}
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if (RESET != rcu_flag_get(RCU_FLAG_LPRST)) {
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// printf("Low Power Reset\r\n");
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cause = RCU_FLAG_LPRST;
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}
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if (RESET != rcu_flag_get(RCU_FLAG_SWRST)) {
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// printf("Software Reset\r\n");
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cause = RCU_FLAG_SWRST;
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}
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// 清除所有复位标志
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rcu_all_reset_flag_clear();
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// printf("cause:%d\r\n", cause);
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return cause;
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}
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