BlueNRG2: ROM image built by Keil MDK is unstable.

We have started proto-typing with BlueNRG2 reference board. However, I met a following problem.

If someone have had same experience or solution, please share with us.

Problem:

- ROM image as a example of HID/HOGP provided by ST DK(BlueNRG-1_2 DK 2.6.0) works fine.

- ROM image built by Keil MDK v5.25 does not work correctly, behaves very unstable.

(randomly freezes, or sends no BT frames or sends invalid BT frames, sometimes discoverable, sometimes undiscoverable...)

- Target: HID_Mouse.hex

Environment:

- H/W: STEVAL-IDB008V2

- IDE: Keil MDK v5.25

- Development Kit: BlueNRG-1_2 DK 2.6.0

- Project file:  BlueNRG-1_2 DK 2.6.0\Project\BLE_Examples\BLE_HID_Peripheral_MDK-ARM\BlueNRG-2

- Build target: HID_Mouse

- Nothing modified from ST DK Release, Just cleaned and built.

- Codes, Project options, etc, nothing modified from original.

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 I guess ST original release would be built by IAR EWARM. If this problem comes from compiler issue, we need to avoid to use Keil MDK.

Regards,

Y.Sawame