Set Display Text of OLED Screen on the Specified Position
Function:

Description: Set text of OLED screen to display on the specified position. OLED screen has four lines and 15 rows.
Parameter:
- port: controller port. range: port1~port6
- line: data type: int, range: 1~4
- row: data type: int, range: 1~15
- text: text content. data type: str
- Return: null