Terry O'Neill

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9 years, 5 months ago.

MMA8451Q example code not working after export to uVision 5.12

I've been able to build this example directly on mbed.org and successfully run the application on a Freedom K20D50M board. However when I export the code to for uVision I run into some trouble. The code compiles fine and can be loaded to the board, but the accelerometer doesn't seem to be read correctly. It always returns values of x=.3 y=0, z=0. Is there possibly init code or a compiler switch missing from the export? Has anyone else tried this?

- Toolchain info:

IDE-Version: µVision V5.12.0.0

Tool Version Numbers: Toolchain: MDK-ARM Professional: 100 user(s) Version: 5.12.0.0 Toolchain Path: C:\Keil_v5\ARM\ARMCC\Bin C Compiler: Armcc.exe V5.05 (build 41) Assembler: Armasm.exe V5.05 (build 41) Linker/Locator: ArmLink.exe V5.05 (build 41) Library Manager: ArmAr.exe V5.05 (build 41) Hex Converter: FromElf.exe V5.05 (build 41) CPU DLL: SARMCM3.DLL V5.12.0.0 Dialog DLL: DCM.DLL V1.13.0.0 Target DLL: CMSIS_AGDI.dll V1.19.0.0 Dialog DLL: TCM.DLL V1.14.2.0 - Project file /media/uploads/boldreceiver/frdm_mma8451q.uvprojx

Question relating to:

Last updated: 16 Jul 2014
Example program for FRDM boards with a NXP MMA8451Q accelerometer FRDM, KL05, KL25, KL46, MMA8451Q

The only one which comes to my mind, that exported project has by default set optimization to 0, in the online IDE is set to 3 as I recall.

posted by Martin Kojtal 01 Dec 2014
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