Serial port communication method for controller boot interface based on STM32MCU

Abstract

The present invention provides a serial port communication method for a controller boot interface based on STM32MCU. The method comprises: step 1: generating a boot interface data model in a manner that a dot-matrix liquid-crystal drive scans a bitmap (BMP); step 2: establishing an operation model for a Flash, which comprises operations of Flash unlocking, Flash page erasing, boot interface data writing, and Flash locking, i.e., firstly, unlocking the Flash, erasing a memory space needed by the Flash, then writing boot interface data and finally locking the Flash; step 3: establishing a communication data packet, which comprises operating the Flash and writing the boot interface data, wherein operating the Flash comprises transmission and reception, and writhing the boot interface data comprises transmission and reception; and step 4: presetting a buffer area for saving a boot interface in the Flash of the controller, enabling a monitor of an upper computer to communicate with the controller, acquiring the communication data packet of the step 3 from the controller, and operating the step 2.

Description

technical field [0001] The invention relates to a method for generating serial port communication, in particular to a method for serial port communication based on an STM32MCU-based controller startup interface. Background technique [0002] Serial communication based on hardware circuit design commonly used three kinds of RS232, RS485, RS422, according to different needs to choose different serial communication methods. The most commonly used one based on software design is the Modbus serial port communication protocol, but because the generator set communication industry has its common and special places, the common monitoring data can use the Modbus serial port communication protocol, and the generator set startup interface has its own special features. In places where there is a lot of data, different customer customizations, and different liquid crystal displays, in the process of communication, using a common communication method will inevitably take a lot of time and ...

AI Technical Summary

Problems solved by technology

The most commonly used one based on software design is the Modbus serial port communication protocol, but because the generator set communication industry has its common and special places, the common monitoring data can use the Modbus serial port communication protocol, and the generator set startup interface has its own special features. In places where there are relatively large amounts of data, different customer customizations, and different liquid crystal displays, in the process of communication, using general communication methods will inevitably take a lot of time and energy to sort out and process, and sometimes often make mistakes