STMicroelectronics AN1800 STR71x BSPI UART Application Note

About this manual

This document presents a standard communication interface between an STR71x microcontroller and a PC. The communication is achieved through the STR71x Buffered Serial Peripheral Interface (BSPI) peripheral connected to a PC serial port using the RS232 protocol.

The note details the hardware configuration, noting that the BSPI electrical characteristics differ from RS232, requiring an interface chip like the ST3232 for conversion. It also covers software initialization steps in C language within the RVDK environment, including baud rate selection and pin configuration.

What's inside

• Introduction
• BSPI Communication Features
• RS232 Communication with a PC
• PC Configuration
• STR71x Configuration
• Hardware Overview
• Software Description

Frequently asked questions

What is the purpose of this application note?

It presents a standard communication interface between an STR71x microcontroller and a PC using the BSPI peripheral and RS232 protocol.

Which chip is used for RS232 to BSPI conversion?

The ST3232 is used to implement the necessary conversion between the PC and the BSPI peripheral.

What baud rates are supported in the example?

The document lists configuration values for 19200, 38400, 57600, and 115200 baud rates.