[HAL][I2C] Update HAL_I2C_Master_Transmit_IT to return HAL_BUSY instead of HAL_ERROR when timeout occur and I2C_FLAG_BUSY is SET

Src/stm32f2xx_hal_i2c.c

diff --git a/Src/stm32f2xx_hal_i2c.c b/Src/stm32f2xx_hal_i2c.c
index acaf4ab..2034141 100644
--- a/Src/stm32f2xx_hal_i2c.c
+++ b/Src/stm32f2xx_hal_i2c.c
@@ -1663,10 +1663,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -1743,10 +1740,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -1953,10 +1947,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -2111,10 +2102,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -2872,10 +2860,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -2960,10 +2945,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -3058,10 +3040,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -3242,10 +3221,7 @@
         hi2c->Mode                = HAL_I2C_MODE_NONE;
         hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-        /* Process Unlocked */
-        __HAL_UNLOCK(hi2c);
-
-        return HAL_ERROR;
+        return HAL_BUSY;
       }
     }
     while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -3578,10 +3554,7 @@
           hi2c->Mode                = HAL_I2C_MODE_NONE;
           hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-          /* Process Unlocked */
-          __HAL_UNLOCK(hi2c);
-
-          return HAL_ERROR;
+          return HAL_BUSY;
         }
       }
       while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -3677,10 +3650,7 @@
           hi2c->Mode                = HAL_I2C_MODE_NONE;
           hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-          /* Process Unlocked */
-          __HAL_UNLOCK(hi2c);
-
-          return HAL_ERROR;
+          return HAL_BUSY;
         }
       }
       while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -3860,10 +3830,7 @@
           hi2c->Mode                = HAL_I2C_MODE_NONE;
           hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-          /* Process Unlocked */
-          __HAL_UNLOCK(hi2c);
-
-          return HAL_ERROR;
+          return HAL_BUSY;
         }
       }
       while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);
@@ -3985,10 +3952,7 @@
           hi2c->Mode                = HAL_I2C_MODE_NONE;
           hi2c->ErrorCode           |= HAL_I2C_ERROR_TIMEOUT;
 
-          /* Process Unlocked */
-          __HAL_UNLOCK(hi2c);
-
-          return HAL_ERROR;
+          return HAL_BUSY;
         }
       }
       while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET);