Technical note

How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions

Introduction

Since EWARM version 6.2, the compiler adds new intrinsics for the CMSIS library that

improve the compiler performance in terms of optimization. These intrinsics may break

CMSIS header files included in STM32 firmware packages built with older EWARM

versions.

To be in line with this change, this technical note describes the steps required to use

EWARM 6.2x with projects built with EWARM 6.1 and previous versions.

October 2011Doc ID 022329 Rev 11/6

www.st.comContents TN0830 Contents

1Opening previous EWARM projects with EWARM 6.2 . . . . . . . . . . . . . . 3 2Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2/6Doc ID 022329 Rev 11 Opening previous EWARM projects with EWARM 6.2

When using EWARM 6.2x to open projects built with EWARM 6.1 and previous, the

following compilation errors are generated due to double CMSIS definitions:

Error[Pe147]: declaration is incompatible with "__interwork

__softfp unsigned long __get_PSP(void)" (declared at line 52 of

"C:\\Program Files\\IAR

C:\\Libraries\\CMSIS\\CM3\\CoreSupport\\core_cm3.h

To overcome this issue:

1.Check the "Use CMSIS" option from Project options > General Options > Library

Configuration:

Figure 1.Use CMSIS option

2. Remove all CMSIS header files from your project by removing:

“$PROJ_DIR$\\..\\..\\..\\Libraries\\CMSIS\\CM3\\CoreSupport” from [Project>Options>C/C++

Compiler>Preprocessor]

Doc ID 022329 Rev 13/6Figure 2.Remove all CMSIS header files from your project

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TN0830Revision history Doc ID 022329 Rev 15/6

2 Revision history

Table 1.

Document revision history Date

Revision Changes

20-Oct-20111Initial release.

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