在board_config.h文件中添加#define SOFTWARE_IIC选项用以选择使用软件IIC还是硬件IIC，如果注释掉该行则为硬件IIC方式。并完整实现软件IIC功能。

src/main.c

@@ -12,12 +12,14 @@
 #include "rs485.h"
 #include "led.h"
 #include "i2c.h"
-#include "soft_i2c.h"
 #include "ldc1612.h"
-#include "tmp112.h"
+#include "board_config.h"
 
-uint32_t g_temperature_uint32;
-uint32_t g_eddy_current_value_uint32;
+#ifdef SOFTWARE_IIC
+#include "soft_i2c.h"
+#else
+#include "i2c.h"
+#endif
 
 void watchdog_init(void) {
     /* Enable the LSI clock */
@@ -59,73 +61,16 @@ int main(void) {
 
     // watchdog_init();
     /* configure I2C */
-    // i2c_gpio_config();
-    // i2c_config();
+    soft_i2c_config();
 
-    // ldc1612_iic_get_sensor_infomation();
+    ldc1612_iic_get_sensor_infomation();
     /* configure LDC1612 */
-    // ldc1612_single_ch0_config();
-
-    uint8_t data[2] = {0};
-
-    printf("Start\n");
-
-
+    ldc1612_single_ch0_config();
 
     /* Initialize watchdog */
     watchdog_init();
 
     while (1) {
-        soft_i2c_config();
-        printf("111\n");
-
-        soft_i2c_start();
-        soft_i2c_send_byte((0x2B << 1));
-        if (!soft_i2c_wait_ack())
-        {
-            printf("NACK\n");
-        }
-
-
-        soft_i2c_send_byte(0x7E);
-        if (!soft_i2c_wait_ack())
-        {
-            printf("NACK\n");
-        }
-
-        soft_i2c_delay();
-        soft_i2c_start();
-
-        soft_i2c_send_byte((0x2B << 1) + 1);
-        if (!soft_i2c_wait_ack())
-        {
-            printf("NACK\n");
-        }
-
-        soft_i2c_delay();
-
-        data[0] = soft_i2c_receive_byte(1);
-        data[1] = soft_i2c_receive_byte(0);
-
-        delay_us(5);
-        soft_i2c_stop();
-
-        printf("0x%x 0x%x\n", data[0], data[1]);
-
-
-
-
-
-        // i2c_start();
-        // delay_ms(1);
-        // i2c_stop();
-        // delay_ms(1);
-        delay_ms(1000);
-        // g_eddy_current_value_uint32 = 0;
-        // g_temperature_uint32 = 0;
-        // g_eddy_current_value_uint32 = ldc1612_get_raw_channel_result(CHANNEL_0);
-        // g_temperature_uint32 = tmp112a_get_raw_channel_result();
-        printf("1\n");
         delay_ms(99);
         fwdgt_counter_reload();
     }