ESPRESSIF – ESP32-32 SoC，模組和開發板上市
- 2020 年 3 月 5 日
- 筆記
Espressif開始量產其 EPSP32 -S2系列SoC，包括模組和開發板(development boards)。
Espressif選取其ESP32-S2 SoC及相關模組 – ESP32-S2-WROVER, ESP-32-S2-WROOM)，和開發板(ESP-S2-Saola-1)，已經量產。
ESP32-S2系列，基於具備高度安全性的於2019年發布的Wi-Fi MCU，和分別於2014年發布的ESP8266和ESP32。
最新的發布重點在於晶片的增強的加密特性(enchanced encryption capabilities)，支援更大的eFuse存儲。
ESP32-S2採用MCU+WiFi設計，具備優秀的WiFi性能，並支援2.4GHz IEEE802.11 b/g/n HT20/HT40協議。結合ESP-WIFI-MESH，可支援大容量高頻寬網路鏈接(high-bandwidth network connections for large deployment scenarios)，比如商業照明(commercial lighting)，智慧家庭等。
其SDK支援password配置協議，雲鏈接，已經可靠的OTQ(over the air technology)軟體升級，幫助客戶快速的升級fireware。
ESP32-S2同時支援WiFi數據的TOF(Time of flight)，以提升無線覆蓋發內內的準確性和穩定性。(accuracy and stability)。
IoT時代所有的嵌入式系統都需要處理大量的數據收集，分析和可視化處理(visualization)，以及其他需要雲端處理的操作。
隨著系統從封閉走向互聯（interconnected)，對安全性提出了很高的要求。為此ESP32-S2訂製化支援一些列安全機制(unique security mechanism)，支援本地和雲端加密處理。
- Secure boot based on the RSA algorithm, which ensures that only trusted software is executed on the chip.
- Flash encryption based on the AES-XTS algorithm, which ensures that user-sensitive configuration data and application code on the external Flash and PSRAM of ESP32-S2 are always encrypted.
- The TLS stack can take advantage of the cryptographic accelerator hardware to improve the cloud connectivity performance.
- The security of ESP32-S2 is especially reinforced, as it resists fault injection attacks from hardware and software, while it also prevents key leakage in voltage failure.
這些安全機制使ESP32-S2更加適用於如小型零售，智慧商業和其他行業，比如更安全的POS機和其他支付終端(payment terminal)。
ESP32-S2支援大量的外設介面HMI(Human Machine Interface) – with 43 programmable GPIOs which can be flexibly configured as USB OTG, SPI, I2S, UART, I2C, LED PWM, LCD interface, camera interface, ADC, DAC, touch buttons, etc.
新的多媒體開發板ESP32-S2-Kaluga-1，支援多樣的功能，如LCD Touch Screen，Touch Panel Control, Camea Image Acquisition, Audio Playback等等。可以里幹活的組裝滿足多樣的訂製化應用，比如 –
- The LCD interface can be connected to an SPI interface, and/or an 8- /16-/ 24-bit parallel port display, in order to meet the application needs of different display resolutions in many different products.
- The touch panel of ESP32-S2-Kaluga-1 is dustproof, waterproof and has a low false-touch rate. The 14 capacitive touch interfaces that are currently supported can be designed as touch buttons, proximity sensors, sliding touch bars, scroll wheels, etc., which can be used in home touch-switches, smart-device touch panels, dimmers, etc.
- The ESP32-S2-Kaluga-1 development board also has an 8- / 16-bit DVP camera interface, and its DMA transmission bandwidth is optimized to easily transmit high-resolution images. These functions are suitable for smart-home devices, industrial wireless control, wireless monitoring, QR wireless identification, and a wide physical range of wireless coverage.
在2020年，預計Espressif會發布更多的基於ESP32-S系列的產品，比如其簡化版本ESP32-C等。
