init

2025-12-25 12:07:06 +08:00
commit 26e73f451e
899 changed files with 42812 additions and 0 deletions
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+#include "initial.h"
+#include "gd32c10x.h"
+#include "gd32c10x_gpio.h"
+#include "gd32c10x_rcu.h"
+#include <cstdio>
+#include <stdint.h>
+#include <stdio.h>
+
+/* retarget the C library printf function to the USART */
+u8 USART0_init() {
+	gd_eval_com_init(EVAL_COM0);
+	return 1;
+}
+
+/*!
+	\brief      configure the watchdog peripheral
+	\param[in]  none
+	\param[out] none
+	\retval     none
+*/
+u8 watchdog_init(u32 time) {
+	u8 status = 0;
+	/* configure FWDGT counter clock: 40KHz(IRC40K) / 64 = 0.625 KHz */
+	/* time = reload_value / clock_frequency */
+	status = fwdgt_config(time * 0.625, FWDGT_PSC_DIV64);
+	fwdgt_enable();
+	return status;
+}
+
+
+int fputc(int ch, FILE *f) throw() {
+	usart_data_transmit(EVAL_COM0, (uint8_t)ch);
+	while (RESET == usart_flag_get(EVAL_COM0, USART_FLAG_TBE))
+		;
+	return ch;
+}
+
+void unused_pin_init() {
+	rcu_periph_clock_enable(RCU_GPIOA); // 使能GPIOA时钟
+	rcu_periph_clock_enable(RCU_GPIOB); // 使能GPIOB时钟
+	rcu_periph_clock_enable(RCU_GPIOC); // 使能GPIOC时钟
+	gpio_init(GPIOA, GPIO_MODE_IPU, GPIO_OSPEED_2MHZ,
+			  GPIO_PIN_8 | GPIO_PIN_11 | GPIO_PIN_12);
+	gpio_init(GPIOB, GPIO_MODE_IPU, GPIO_OSPEED_2MHZ,
+			  GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_15);
+	gpio_init(GPIOC, GPIO_MODE_IPU, GPIO_OSPEED_2MHZ,
+			  GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15);
+	gpio_bit_reset(GPIOA, GPIO_PIN_8 | GPIO_PIN_11 | GPIO_PIN_12);
+	gpio_bit_reset(GPIOB, GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_15);
+	gpio_bit_reset(GPIOC, GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15);
+}
+
+/*!
+	\brief      检测并打印复位源信息
+	\param[in]  none
+	\param[out] none
+	\retval     none
+*/
+u16 get_reset_cause(void) {
+	u16 cause = 0;
+	if (RESET != rcu_flag_get(RCU_FLAG_FWDGTRST)) {
+		// printf("Free Watchdog Timer Reset\r\n");
+		cause = RCU_FLAG_FWDGTRST;
+	}
+	if (RESET != rcu_flag_get(RCU_FLAG_EPRST)) {
+		// printf("External Pin Reset\r\n");
+		cause = RCU_FLAG_EPRST;
+	}
+
+	if (RESET != rcu_flag_get(RCU_FLAG_PORRST)) {
+		// printf("Power Reset\r\n");
+		cause = RCU_FLAG_PORRST;
+	}
+
+	if (RESET != rcu_flag_get(RCU_FLAG_WWDGTRST)) {
+		// printf("Window Watchdog Timer Reset\r\n");
+		cause = RCU_FLAG_WWDGTRST;
+	}
+
+	if (RESET != rcu_flag_get(RCU_FLAG_LPRST)) {
+		// printf("Low Power Reset\r\n");
+		cause = RCU_FLAG_LPRST;
+	}
+
+	if (RESET != rcu_flag_get(RCU_FLAG_SWRST)) {
+		// printf("Software Reset\r\n");
+		cause = RCU_FLAG_SWRST;
+	}
+	// 清除所有复位标志
+	rcu_all_reset_flag_clear();
+	// printf("cause:%d\r\n", cause);
+	return cause;
+}