We’re pleased to announce a new example implementation for Microchip’s ATSAMV71Q21B microcontroller in wolfSSH, introduced in Pull Request #790. This addition provides a complete reference implementation and Harmony filesystem port, making it straightforward for developers to integrate secure SSH functionality into ARM Cortex-M7-based embedded applications using Microchip’s MPLAB Harmony framework.
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What’s Included
The ATSAMV71Q21B is a high-performance automotive-grade ARM Cortex-M7 microcontroller running at up to 300MHz with 2MB Flash and 384KB SRAM. It features integrated hardware cryptography (AES-256, SHA-256, TRNG), 10/100 Ethernet MAC, high-speed USB, and dual CAN-FD—making it ideal for secure industrial, automotive, and IoT applications.
This pull request adds two key components:
Complete Example Implementation: A fully functional reference demonstrating wolfSSH integration on the ATSAMV71Q21B platform, serving as a starting point for developers building SSH-enabled applications on Microchip’s SAM V71 family.
Harmony Filesystem Port: Integration with MPLAB Harmony’s file system services, enabling wolfSSH to work seamlessly with Harmony’s unified filesystem API. The port supports multiple storage media including NVM Flash, SD cards (SDSPI, SDMMC), and external SPI/QSPI Flash, while maintaining compatibility with Harmony’s non-blocking, state machine-based programming model.
The filesystem port allows wolfSSH applications to access files through the Harmony File System API, leverage Harmony’s FAT filesystem implementation, and integrate cleanly with Harmony’s driver and system service architecture. This makes it easy to implement secure shell access, SFTP file transfers, and secure tunneling on embedded systems already using the Harmony framework.
Who Benefits
This enhancement is particularly valuable for industrial automation developers building secure remote access for PLCs, automotive engineers implementing secure diagnostics in ECUs, IoT device manufacturers requiring SSH protocol support, and existing Harmony users adding secure communication to their applications. The ATSAMV71Q21B’s hardware crypto acceleration can significantly improve SSH performance while reducing CPU overhead during encryption and authentication operations.
If you have questions about Microchip platform support or other embedded configurations, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247.
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