SEGGER J-Link Global DLL Error Codes
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The J-Link DLL defines a set of global error codes which may be returned by almost every DLL API function. The global error codes start at -256, so values from -1 to -255 are reserved for function-specific error codes. In the following, all error codes which are defined by the DLL and their explanations are listed:
| Symbolic names | Explanation |
|---|---|
| JLINKARM_ERR_EMU_NO_CONNECTION | If this error code is returned, no connection to the emulator could be established. |
| JLINKARM_ERR_EMU_COMM_ERROR | If this error code is returned, a communication error between the emulator and the host occurred. |
| JLINKARM_ERR_DLL_NOT_OPEN | If this error code is returned, the DLL has not been opened but needs to be before using the function that has been called. |
| JLINKARM_ERR_VCC_FAILURE | If this error code is returned, the target system has no power (Measured: VTref < 1V). |
| JLINK_ERR_INVALID_HANDLE | If this error code is returned, an invalid handle (e.g. file handle) was passed to the called function. |
| JLINK_ERR_NO_CPU_FOUND | If this error code is returned, J-Link was unable to detect a supported core that is connected to J-Link. |
| JLINK_ERR_EMU_FEATURE_NOT_SUPPORTED | If this error code is returned, the emulator does not support the selected feature (usually returned by functions that need specific emulator capabilities). |
| JLINK_ERR_EMU_NO_MEMORY | If this error code is returned, the emulator does not have enough memory to perform the requested operation. |
| JLINK_ERR_TIF_STATUS_ERROR | If this error code is returned, an target interface error occurred such as "TCK is low but should be high". |
This information was taken from the SEGGER Microcontroller document, “J-Link SDK User’s Guide of the J-Link application program interface (API)”, Software Version 4.86, Manual Rev. 2 (UM08002).