diff --git a/software_i2c/bsp_soft_i2c.c b/software_i2c/bsp_soft_i2c.c
index dd2e3ff..f8018eb 100644
--- a/software_i2c/bsp_soft_i2c.c
+++ b/software_i2c/bsp_soft_i2c.c
@@ -327,6 +327,7 @@ static soft_i2c_err_t soft_i2c_read_byte(P_SOFT_I2C_T p_i2c, uint8_t *p_data) {
 #endif
     soft_i2c_write_gpio(&p_i2c->sda, SOFT_I2C_LEVEL_HIGH); // 开启线与
     for (loopCnt = 0; loopCnt < 8; loopCnt++) {
+        soft_i2c_delay_us();
         *p_data <<= 1;
         soft_i2c_write_gpio(&p_i2c->scl, SOFT_I2C_LEVEL_HIGH);  // 拉起SCL
 #if defined(__SOFT_I2C_CLOCK_STRECH_EN__)
@@ -341,9 +342,9 @@ static soft_i2c_err_t soft_i2c_read_byte(P_SOFT_I2C_T p_i2c, uint8_t *p_data) {
         *p_data |= soft_i2c_read_gpio(&p_i2c->sda); // 读取数据
         soft_i2c_delay_800ns();
         soft_i2c_write_gpio(&p_i2c->scl, SOFT_I2C_LEVEL_LOW);   // 拉低SCL
-        soft_i2c_delay_us();
     }
     soft_i2c_write_gpio(&p_i2c->sda, SOFT_I2C_LEVEL_LOW);   // 关闭线与
+    soft_i2c_delay_800ns();
     return SOFT_I2C_ERR_OK;
 }
 
diff --git a/software_i2c/bsp_soft_i2c.h b/software_i2c/bsp_soft_i2c.h
index f13d627..76db70c 100644
--- a/software_i2c/bsp_soft_i2c.h
+++ b/software_i2c/bsp_soft_i2c.h
@@ -21,7 +21,7 @@
 #elif defined(STM32F10X_HD) || defined(STM32F10X_MD) || defined(STM32F10X_CL)
 #define SOFT_I2C_STM32F1_USED       ///< 使用STM32F1芯片
 #else
-#error "Please select the target chip model!"
+#error "Please define GD32F30X_XX or STM32F10X_XX"
 #endif
 
 #if defined(SOFT_I2C_GD32F3_USED)
diff --git a/software_i2c/bsp_soft_i2c_private.h b/software_i2c/bsp_soft_i2c_private.h
index 7efacbe..089bb18 100644
--- a/software_i2c/bsp_soft_i2c_private.h
+++ b/software_i2c/bsp_soft_i2c_private.h
@@ -17,6 +17,15 @@
 
 #include <stdint.h>
 
+/* 根据不同的芯片包含不同的文件 */
+#if defined(GD32F30X_HD) || defined(GD32F30X_CL) || defined(GD32F30X_XD)
+#define SOFT_I2C_GD32F3_USED        ///< 使用GD32F3芯片
+#elif defined(STM32F10X_HD) || defined(STM32F10X_MD) || defined(STM32F10X_CL)
+#define SOFT_I2C_STM32F1_USED       ///< 使用STM32F1芯片
+#else
+#error "Please define GD32F30X_XX or STM32F10X_XX"
+#endif
+
 /**
  * @brief 软件模拟 I2C 通用宏定义
  * @addtogroup SOFT_I2C_COMM_DEF
diff --git a/software_i2c/dsview/STM32F1_400K_O0.dsl b/software_i2c/dsview/GD32F303RE_400K_O0.dsl
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