The Serial Port Service (SPS) emulates a serial cable communication. It provides a simple substitute for RS-232 connections, including the familiar software flow control logic via Bluetooth low energy. The SPS software distribution includes the application and profile source codes.

Software has been developed for theDA14585开发套件（DK） - 亲，DA14531.开发套件（DK） -DA14531.USB Kit orDA14531 TINY™模块. It is also developed for Android and iOS tablets and mobile phones, allowing a serial port to be emulated when using two DA14585/DA14531 DKs, or aDA14585/DA14531DK和Android或iOS设备。DA14585 DK可以在间隙中际角色或外围角色中函数。Android或iOS设备仅在间隙中的角色中函数。

There are two projects provided, host and device projects, operating in BLE central and peripheral role respectively. Both projects use DMA driven UART operation for baud rates up to 921600, using hardware flow control only, optimized for DLE operation and high speeds.

• GAP Central/Peripheral roles
• GATT-based bidirectional serial link
• 没有响应/通知方法写入数据流
• Bluetooth flow control supported
• 单点点对点连接
• 链接损耗的自动重新连接
• UART波特率：921600,115200,57600,38400,9200,9600
• iOS / Android应用程序
• Extended sleep mode support
• Transfer rates dependent upon device: up to 580kpbs for the DA14585 /DA14531 !
• Memory Size of application image is ~ 28 Kbytes for the DA14531 and ~32Kbytes for the DA14585.

现在还提供DA1468X系列，具有高吞吐量和对中心和外围角色的支持！UART波特率高达921600，可实现高达640 kbps的数据吞吐量（DA1468x至DA1468x）！