Introduction: This case study highlights Spanidea’s expertise in designing and developing reference software for integrating SPI (Serial Peripheral Interface) stack with third-party vendors. The project involved the development of a SPI network driver, implementation of 3GPP TS 27.010 (LTE/3GPP), and PPP (Point-to-Point Protocol) implementation on top of the SPI network driver. The platform used was a dual MIPS core (MIPS 4kec) mobile router with embedded Linux on one core and an RTOS on the other core. Case Study Overview: Industry: Telecommunications Objective: Design and develop reference software for SPI stack integration with third-party vendors, including a SPI network driver, 3GPP TS 27.010 implementation, and PPP implementation, targeting a dual MIPS core mobile router with embedded Linux and an RTOS.

Problem Statement: The client sought to provide their customers with a comprehensive reference software solution for integrating their devices with third-party vendors. Specifically, they required a SPI network driver, 3GPP TS 27.010 implementation for LTE/3GPP support, and PPP implementation to establish communication over the SPI interface. Spanidea was entrusted with the design and development of this reference software, targeting a dual MIPS core mobile router with embedded Linux and an RTOS.

Solution Design: The solution design encompassed the following components and technologies:

• SPI Network Driver: A custom SPI network driver was designed and developed to facilitate communication between the clients’ devices and third-party vendors’ systems via the SPI interface.
• 3GPP TS 27.010 Implementation: The reference software incorporated the 3GPP TS 27.010 standard implementation, ensuring compatibility and compliance with LTE/3GPP protocols for seamless integration.
• PPP Implementation: PPP was implemented on top of the SPI network driver, allowing for reliable point-to-point communication between the clients’ devices and third-party systems.
• Dual MIPS Core Mobile Router: The reference software was specifically designed for a dual MIPS core mobile router, enabling efficient utilization of the processor cores.
• Embedded Linux and RTOS: The platform utilized embedded Linux on one MIPS core and an RTOS on the other core, offering flexibility, stability, and real-time capabilities.

Implementation: The implementation of the reference software for SPI stack integration followed a systematic approach:

• Requirement Analysis: Detailed discussions and collaboration with the client to understand their integration requirements, device specifications, and performance objectives.
• Software Development: The SPI network driver was developed to establish communication over the SPI interface, ensuring compatibility with third-party vendor systems.
• 3GPP TS 27.010 Implementation: The LTE/3GPP protocols were implemented to comply with the industry standards, enabling seamless integration with third-party networks.
• PPP Implementation: PPP was implemented on top of the SPI network driver, providing a reliable point-to-point communication channel.
• Platform Integration: The reference software was integrated with a dual MIPS core mobile router, leveraging the capabilities of embedded Linux and RTOS for efficient processing and real-time operations.
• Testing and Validation: Thorough testing and validation processes were conducted to ensure the reliability, compatibility, and performance of the reference software.
• Documentation and Support: Comprehensive documentation and ongoing support were provided by Spanidea to assist the clients’ customers in successfully integrating their devices with third-party vendors.

Key Features and Benefits:

• Seamless Integration: The reference software facilitated seamless integration between the client’s devices and third-party vendor systems, enabling efficient communication over the SPI interface.
• Compliance with Industry Standards: The 3GPP TS 27.010 implementation ensured compliance with LTE/3GPP protocols, enabling compatibility and interoperability with third-party networks.
• Reliable Communication: The PPP implementation on top of the SPI network driver provided a reliable and secure point-to-point communication channel between devices and third-party systems.
• Efficient Processor Utilization: The reference software efficiently utilized the dual MIPS core mobile router, leveraging embedded Linux and RTOS for optimized processing and real-time capabilities.
• Enhanced Customer Experience: The seamless integration, compliance with industry standards, and reliable communication capabilities resulted in an enhanced customer experience, promoting successful device integration with third-party vendors.
• Technical Support: Spanidea’s documentation and ongoing support ensured that the client’s customers received the necessary assistance for a smooth and successful integration process.

Results and Impact:

• Improved Integration Capabilities: The reference software provided the client’s customers with enhanced integration capabilities, allowing them to seamlessly integrate their devices with third-party vendors’ systems via the SPI interface.
• Accelerated Time-to-Market: By leveraging the reference software, customers were able to reduce their development time and efforts, expediting their time-to-market for new products and solutions.
• Increased Customer Satisfaction: Reliable communication, compliance with industry standards, and technical support contributed to increased customer satisfaction, fostering long-term relationships and repeat business.
• Competitive Advantage: The comprehensive reference software solution gave the client a competitive advantage in the market, offering customers a seamless and reliable integration experience.
• Streamlined Development Processes: The use of a custom SPI network driver, 3GPP TS 27.010 implementation, and PPP implementation on the dual MIPS core mobile router streamlined the development process, ensuring efficient integration and optimized performance.