CMSIS-Compiler provides software components for retargeting I/O operations in standard C run-time libraries. Following interfaces are supported for retargeting:

• File interface for reading and writing files.
• I/O interface for standard I/O stream retargeting (stderr, stdin, stdout).
• OS interface for multithread safety using an arbitrary RTOS.

Overview of CMSIS-Compiler

Standard C library functions are platform independent, but the implementations of the low-level I/O and multithreading support are tailored to the target compiler toolchains.

Access to CMSIS-Compiler

CMSIS-Compiler is maintained in a GitHub repository and is also released as a standalone package in CMSIS Pack format.

• CMSIS-Compiler GitHub Repo provides the full source code of CMSIS-Compiler components.
• CMSIS-Compiler Documentation explains how to use the library and describes the implemented functions in details.
• CMSIS-Compiler Pack delivers CMSIS-Compiler components and examples in CMSIS-Pack format.

Key Features and Benefits

• CMSIS-Compiler allows individual retargeting configuration for common I/O interfaces: file, stderr, stdin, stdout.
• Implements several ready-to-use retarget variants: into File, Breakpoint, Event Recorder, ITM, as well as user-specific variant.
• Supports common standard C libraries, such as from Arm Compiler and GCC (Newlib) toolchains. IAR support is planned.
• Provides implementation templates and examples to get started.