Understanding Firmware Upload Failures
Firmware upload failures in IAR Embedded Workbench can be challenging, but with a systematic approach, they can be resolved effectively. Here are some recommended steps to debug and resolve these issues.
Check Hardware Connections
- Ensure all physical connections between the host computer and the target device are secure.
- Inspect and replace cables, connectors, and adaptors if necessary.
- Verify the power supply to the target hardware is consistent and within required specifications.
Review Device Configuration
- Confirm that the correct device is selected in your IAR project configuration matching your target microcontroller.
- Analyze configuration files for any discrepancies in memory mapping or peripheral setups.
Update IAR Workbench and Tools
- Ensure that the IAR Embedded Workbench is updated to its latest version, as updates often fix known issues.
- Verify that your debugger firmware is up-to-date to ensure compatibility and stability.
Inspect and Modify Linker Script
- The linker script could be incorrectly set, causing upload failures. Check the memory mapping in the .icf file:
define region RAM_region = mem:[from 0x20000000 size 0x2000];
define region FLASH_region = mem:[from 0x08000000 size 0x40000];
place in RAM_region { readwrite };
place in FLASH_region { readonly };
- Ensure these definitions match your hardware specifications.
Optimize Debugger Settings
- Access the debugger settings from the IAR project menu and ensure the correct interface (e.g., JTAG, SWD) is selected.
- Experiment with different clock speeds if connection stability is a concern. For example, reduce the clock speed in case of failing uploads at higher speeds.
Use the Error Log for Insight
- Utilize the IAR Workbench error logs for specific error messages. Enhanced error diagnostics provide clues about the specific frame issue. Look into the log via:
Window > I/O > UART in Terminal
- Respond accordingly to specific error codes or messages.
Implement Necessary Code Adjustments
- Trim code: Remove or comment out non-critical sections to determine if resource shortages or peripheral conflicts cause the issue.
- Stack and Heap Sizes: Adequately configure the stack and heap sizes in your code, as insufficient allocation may cause failures during the upload. Adjust them using:
#define __STACK_SIZE 0x0400
#define __HEAP_SIZE 0x0100
Utilize Correct Programming Sequence
- Make sure the reset configuration and timing in your firmware upload sequence match with your device requirements.
- Include a software-based reset function if needed:
void Software_Reset(void) {
NVIC_SystemReset();
}
Additional Debugging Strategies
- Enable debug printing to the console to trace the last successful routine before a failure.
- Check for licensing issues with the IAR tools that may cause unexpected behavior.
The above steps should provide valuable insights into resolving firmware upload issues with IAR Embedded Workbench. By progressively troubleshooting the hardware, software, and configuration elements, a firmware developer can effectively tackle upload failures.
