Initial commit

inc/board_config.h

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+//
+// Created by dell on 24-12-28.
+//
+
+#ifndef BOARD_CONFIG_H
+#define BOARD_CONFIG_H
+
+// #define SOFTWARE_IIC
+
+// #define DEBUG_VERBOES
+
+/******************************************************************************/
+
+#define I2C_GPIO_RCU         RCU_GPIOF
+#define I2C_RCU              RCU_I2C0
+#define I2C_PHY              I2C0
+#define I2C_SCL_PORT         GPIOF
+#define I2C_SCL_PIN          GPIO_PIN_1
+#define I2C_SDA_PORT         GPIOF
+#define I2C_SDA_PIN          GPIO_PIN_0
+#define I2C_GPIO_AF          GPIO_AF_1
+
+/******************************************************************************/
+
+#define USART_GPIO_RCU       RCU_GPIOA
+#define USART_RCU            RCU_USART0
+#define USART_GPIO_PORT      GPIOA
+#define USART_GPIO_AF        GPIO_AF_1
+#define USART_TX_PIN         GPIO_PIN_2
+#define USART_RX_PIN         GPIO_PIN_3
+#define USART_PHY            USART0
+#define USART_PHY_BAUDRATE   115200U
+#define RS485_EN_PORT        GPIOA
+#define RS485_EN_PIN         GPIO_PIN_1
+
+/******************************************************************************/
+
+#define LED_PORT             GPIOA
+#define LED_PIN              GPIO_PIN_7
+#define LED_RCU              RCU_GPIOA
+#define LED_BLINK_TIMER_RCU  RCU_TIMER16
+#define LED_BLINK_TIMER      TIMER16
+#define LED_BLINK_IRQ        TIMER16_IRQn
+
+/******************************************************************************/
+
+#endif //BOARD_CONFIG_H

inc/fwdgt.h

@@ -0,0 +1,17 @@
+//
+// Created by yelv1 on 24-12-29.
+//
+
+#ifndef FWDGT_H
+#define FWDGT_H
+
+#include "gd32e23x.h"
+#include "board_config.h"
+
+void watchdog_init(void);
+
+void fwdgt_reset_mcu(void);
+
+void watchdog_reload(void);
+
+#endif //FWDGT_H

inc/gd32e23x_it.h

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+/*!
+    \file    gd32e23x_it.h
+    \brief   the header file of the ISR
+    
+    \version 2024-02-22, V2.1.0, firmware for GD32E23x
+*/
+
+/*
+    Copyright (c) 2024, 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.
+*/
+
+#ifndef GD32E23X_IT_H
+#define GD32E23X_IT_H
+
+#include "gd32e23x.h"
+#include "main.h"
+#include "systick.h"
+#include "board_config.h"
+
+/* function declarations */
+/* this function handles NMI exception */
+void NMI_Handler(void);
+/* this function handles HardFault exception */
+void HardFault_Handler(void);
+/* this function handles SVC exception */
+void SVC_Handler(void);
+/* this function handles PendSV exception */
+void PendSV_Handler(void);
+/* this function handles SysTick exception */
+void SysTick_Handler(void);
+
+void TIMER16_IRQHandler(void);
+
+#endif /* GD32E23X_IT_H */

inc/i2c.h

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+//
+// Created by dell on 24-12-20.
+//
+
+#ifndef I2C_H
+#define I2C_H
+
+#include "gd32e23x_it.h"
+#include "gd32e23x.h"
+#include "systick.h"
+#include "main.h"
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include "board_config.h"
+
+/******************************************************************************/
+
+#define I2C_SPEED       20000
+
+#define I2C_TIME_OUT    (uint16_t)(5000)
+#define I2C_OK          1
+#define I2C_FAIL        0
+#define I2C_END         1
+
+/******************************************************************************/
+
+typedef enum {
+    I2C_START = 0,
+    I2C_SEND_ADDRESS,
+    I2C_CLEAR_ADDRESS_FLAG,
+    I2C_TRANSMIT_DATA,
+    I2C_STOP
+} i2c_process_enum;
+
+/******************************************************************************/
+
+void i2c_gpio_config(void);
+
+void i2c_config(void);
+
+void i2c_bus_reset(void);
+
+void i2c_scan(void);
+
+uint8_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]);
+
+uint8_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
+
+#endif //I2C_H

inc/led.h

@@ -0,0 +1,14 @@
+//
+// Created by yelv1 on 24-12-30.
+//
+
+#ifndef LED_H
+#define LED_H
+
+#include "gd32e23x_it.h"
+#include "gd32e23x.h"
+#include "board_config.h"
+
+void led_blink_config(void);
+
+#endif //LED_H

inc/main.h

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+/*!
+    \file    main.h
+    \brief   the header file of main
+    
+    \version 2024-02-22, V2.1.0, firmware for GD32E23x
+*/
+
+/*
+    Copyright (c) 2024, 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.
+*/
+
+#ifndef MAIN_H
+#define MAIN_H
+
+#include <stdio.h>
+#include "gd32e23x.h"
+#include "systick.h"
+#include "gd32e23x_libopt.h"
+#include "led.h"
+#include "usart.h"
+#include "fwdgt.h"
+#include "board_config.h"
+
+#ifdef SOFTWARE_IIC
+#include "soft_i2c.h"
+#else
+#include "i2c.h"
+#endif
+
+#endif /* MAIN_H */

inc/soft_i2c.h

@@ -0,0 +1,53 @@
+//
+// Created by dell on 24-12-28.
+//
+
+#ifndef SOFT_I2C_H
+#define SOFT_I2C_H
+
+#include "gd32e23x_it.h"
+#include "gd32e23x.h"
+#include "systick.h"
+#include "main.h"
+
+#include "board_config.h"
+
+/******************************************************************************/
+
+#define I2C_SCL_HIGH()      gpio_bit_set(I2C_SCL_PORT, I2C_SCL_PIN)
+#define I2C_SCL_LOW()       gpio_bit_reset(I2C_SCL_PORT, I2C_SCL_PIN)
+#define I2C_SDA_HIGH()      gpio_bit_set(I2C_SDA_PORT, I2C_SDA_PIN)
+#define I2C_SDA_LOW()       gpio_bit_reset(I2C_SDA_PORT, I2C_SDA_PIN)
+#define I2C_SDA_READ()      gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN)
+
+/******************************************************************************/
+
+#define SOFT_I2C_OK          1
+#define SOFT_I2C_FAIL        0
+#define SOFT_I2C_END         1
+
+/******************************************************************************/
+
+void soft_i2c_delay(void);
+
+void soft_i2c_config(void);
+
+void soft_i2c_start(void);
+
+void soft_i2c_stop(void);
+
+void soft_i2c_send_ack(void);
+
+void soft_i2c_send_nack(void);
+
+uint8_t soft_i2c_wait_ack(void);
+
+void soft_i2c_send_byte(uint8_t data);
+
+uint8_t soft_i2c_receive_byte(uint8_t ack);
+
+uint8_t soft_i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]);
+
+uint8_t soft_i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
+
+#endif //SOFT_I2C_H

inc/systick.h

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+/**
+* ************************************************************************
+ *
+ * @file systick.h
+ * @author GD32
+ * @brief
+ *
+ * ************************************************************************
+ * @copyright Copyright (c) 2024 GD32
+ * ************************************************************************
+ */
+#ifndef SYS_TICK_H
+#define SYS_TICK_H
+
+#include <stdint.h>
+
+/* function declarations */
+/* configure systick */
+void systick_config(void);
+
+/* delay a time in milliseconds */
+void delay_ms(uint32_t count);
+
+/* delay a time in microseconds */
+void delay_us(uint32_t count);
+
+#endif /* SYS_TICK_H */

inc/usart.h

@@ -0,0 +1,15 @@
+//
+// Created by yelv1 on 24-12-30.
+//
+
+#ifndef USART_H
+#define USART_H
+
+#include "gd32e23x.h"
+#include "board_config.h"
+
+void usart_config(void);
+
+void rs485_config(void);
+
+#endif //USART_H