ST Manuals

This application note describes a simple and easy-to-use solution to help design and develop products with an audio output, for example, toys, white goods, washing machines, and alarms. Audio data generally require the storage of a lot of memory. However, the memory space needed to preserve such data can be reduced by compressing the audio data via a specified compression method. Processing these data is a complex task requiring powerful microcontrollers such as DSP or audio chip. Usually, 8-bit microcontrolles do not offer either a large memory or a high computing performance. The software solution offered in this application note reconstructs audio signals from compressed samples. A simple audio codec based on an adaptive differential pulse coded modulation (ADPCM) algorithm is used and advantage is taken of the advanced STM8S core with its 3-staged pipeline and 16 or 24 MIPS peak performance. The digital samples are usually converted to an analog signal by some external or onchip digital-to-analog converter (DAC). There are a lot of applications where the high fidelity audio output is not a priority and/or the use of an external DAC is not a suitable cost- effective solution for 8-bit microcontrollers. To reduce costs and to offer a good quality audio, an ideal solution is to generate an audio signal using pulse width modulation (PWM).

This is an application note about power management of STM8L family products, which introduces power management modes and how to use these products in these modes.

This application note describes a digital constant-current LED controller based on STM8S208X, which can be used for LED streetlighting platforms. The controller implements real average current control for LEDs using a digital approach, offering low energy consumption and good performance.

This document describes the CAN protocol used in the STM32 microcontroller bootloader and details each supported command.

This application note introduces the NicheLite TCP/IP stack for STM32F107xx and describes the integration considerations to be taken into account when developing a user application including the performance and memory size aspects

uClinux™ is a Linux kernel fork for microcontrollers (MCUs, embedded systems). This application note explains how to install, configure, and use uClinux for the STM3210E-EVAL board.

AN3029 is an application note about the STM8L 8-bit microcontroller, which provides a detailed description of the STM8L 8-bit microcontroller's basic hardware and software environment, and is suitable for low density STM8L101x, medium density STM8L15x and high density STM8L15x/16x devices.

This application note explains the methods for managing the driver enable signal in RS-485 and IO-Link communications with the STM32™'s USART interface, as well as the timing measurements of the DE signal. The document is divided into three parts: it first explains the timing constraint of the DE signal, then describes the two methods used to manage the DE signal, and finally provides different measurements of the DE signal switching time using these methods.

This application note describes how to perform in-application programming using the STM32F10x’s I2C peripheral

This application note gives two methods of calibrating the HSI internal RC oscillator.

This document introduces the features of the STM32F107xx connectivity line microcontrollers, including a high-quality 10/100 Ethernet peripheral and hardware checksum generation, insertion, and verification for IP, UDP, TCP, and ICMP protocols. The document also provides a demonstration application built on top of the lwIP TCP/IP stack, including a DHCP client, a Hello example based on the Telnet protocol, a TFTP server, a web server, and a Server/Clients example.

This document describes the method of building an efficient circular FIFO using STM32F10x's DMA, and provides implementation methods.

AN3116 is an application note about STM32 ADC modes, which introduces the features and functions of STM32 ADC, and provides some application examples.

This application note describes the RC time constant acquisition principle used in the touch sensing software library.