FAQ for System

• FAQ for Low Power
  • 1. Why does the system still not go to sleep when I configure Sleep mode?
  • 2. Does the system not go to sleep after a UART call app_uart_receive_async?
  • 3. J-Link connection failed, SK board cannot download firmware, why?
  • 4. The wake-up time is not set in the program, and the Bluetooth is not turned on. After directly entering the sleep mode, why does it wake up automatically every 30 seconds?
  • 5. J-Log is no longer output after a part of Log is output in the Link RTT Viewer. Why?
• FAQ for Memory
  • 1. How does Keil limit the compiled firmware size?
  • 2. How to fix a variable at a specified address?
• FAQ for Fault Trace
  • 1. How can I tell if my program is a HardFault?
  • 2. Why does my program get HardFault?
  • 3. Can I analyze the above without using the Cortex Backtrace component?
  • 4. If you don’t use the Fault Trace module, can you analyze HardFault?
  • 5. What’s going on when the PC points to an inexplicable place?
  • 6. What if I can’t read the data on the stack?
• FAQ for LOG Module
  • 1. What is the maximum baud rate of UART for LOG?
  • 2. What should I do if I can’t see the output on the computer when I use the serial port to type LOG?
  • 3. How to type LOG with SEGGER RTT?
  • 4. Why does RTT print the log for a period of time and then stop printing, and the system is stuck?
  • 5. What should I do if I can’t see the LOG after J-Link RTT Viewer is connected?
  • 6. How to export the stored LOG?
  • 7. When using GRToolbox to export the storage LOG, what should I do if the LOG is incomplete?
  • 8. When using GRToolbox to export logs, I find that only the most recent logs are available, and I can’t get earlier logs. What should I do?