X-CUBE-AVS扩展套件包含一组用于STM32F7系列微控制器的库和应用示例，充当支持Alexa的器件。它运行在32F769IDISCOVERY板上，它提供了一个本地以太网接口。

主要特征

意法半导体的Alexa语音服务框架(AVS)

创建面向AVS的STM32应用程序

准备运行的智能扬声器固件示例

TCP / IP连接

AVS协议封装

可更换基本音频采集

有限的音频播放器的例子

图片

STM32F7

STM32F7 series of very high-performance MCUs with ARM® Cortex®-M7 core

Taking advantage of ST’s ART Accelerator™ as well as an L1 cache, STM32F7 microcontrollers deliver the maximum theoretical performance of the Cortex-M7 core, regardless if code is executed from embedded Flash or external memory: 1082 CoreMark /462 DMIPS at 216 MHz fCPU.

Smart architecture with new peripheral set

The STM32F7 series unleashes the Cortex-M7 core:

AXI and multi-AHB bus matrixes for interconnecting core, peripherals and memories

Up to 16 Kbytes +16 Kbytes of I-cache and D-cache

Up to 2 Mbytes of embedded Flash memory, with Read-While-Write capability on certain devices

Two general-purpose DMA controllers and dedicated DMA controllers for Ethernet (on some variants), high-speed USB On-The-Go interfaces and the Chrom-ART graphic accelerator (on some variants)

Peripheral speed is independent from CPU speed (dual clock support) allowing system clock changes without any impact on peripheral operations

Even more peripherals, such as two serial audio interfaces (SAI) with SPDIF output support, three I²S half-duplex interfaces with SPDIF input support, two USB OTG interfaces with dedicated power supply and Dual-mode Quad-SPI Flash memory interface

Large SRAM with a scattered architecture:

Up to 512 Kbytes of universal data memory, including up to 128 Kbytes of Tightly-Coupled Memory for Data (DTCM) for time critical data handling (stack, heap...)

16 Kbytes of Tightly-Coupled Memory for Instructions (ITCM) for time-critical routines

4 Kbytes of backup SRAM to keep data in the lowest power modes

Protected code execution feature (PC-ROP) on some variants

On-chip USB high-speed PHY on some variants

Power efficiency

7 CoreMark/mW at 1.8 V

100 µA typical current consumption in Stop mode with all context and SRAM saved

Compatibility

Cortex-M7 is backwards compatible with the Cortex-M4 instruction set

STM32F7 series is pin-to-pin compatible with the STM32F4 series*

* Note: see datasheet for the specific case of 64- and 100-pin packages

32F769IDISCOVERY

STMicroelectronics 32F769IDISCOVERY探索套件允许利用STM32F7系列微控制器开发和共享应用。 其中STM32F7基于ARM® Cortex®-M7内核。 该探索套件可使各种不同的应用受益于音频、多传感器支持、图形、安全、视频和高速连接功能。 支持Arduino连接提供无限的扩展能力，即提供海量的专用附加板选择。

特性

STM32F769NIH6微控制器具有以下配置

2MB的闪存和512+16+4KB的RAM，采用BGA216封装

支持USB重新枚举功能的板载ST-LINK/V2-1

USB ST-LINK功能：虚拟COM端口、大容量存储、调试端口

4英寸电容性触摸液晶显示屏，带MIPI® DSI连接器

SAI音频编解码器

两个音频线路插孔，一个用于输入，一个用于输出

立体声扬声器输出

DFSDM输入上的四个ST MEMS麦克风

两个SPDIF RCA输入和输出连接器

两个按钮(用户和复位)

512M位Quad-SPI闪存

128M位SDRAM

microSD卡连接器

WI-FI或Ext-EEP子板连接器

USB OTG FS，带Micro-AB连接器

符合IEEE-802.3-2002的以太网连接器

五个电源选择：

ST LINK/V2-1

USB HS连接器

来自RJ45的5V电压(以太网供电)

来自Arduino™或外部连接器的5V电压

USB充电器

以太网供电符合IEEE 802.3af(48V - 5V 3W供电设备)标准

外部应用的电源输出：3.3V或5V

Arduino™ Uno V3连接器