 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SW4STM32C Datasheet(PDF) 48 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
SW4STM32C Datasheet(HTML) 48 Page - STMicroelectronics |
|
|
48 / 99 page  Exception handling AN4989 48/99 DocID030181 Rev 2 6 Exception handling It is usually helpful, or even mandatory in complex project, to properly trap and find root cause of software exception like HardFault and NMI. This chapter intends to make the user aware of a few techniques used to help investigating such issue. In order to get deeper into the subject, the user can usefully refer to Joseh Yiu’s work and book collection The Definitive Guide to ARM-Cortex-M, and to Carmelo Noviello’s recent on- line guide Mastering STM32. 6.1 Default weak Handlers By default Handlers are implemented as __weak functions which perform endless loops: __vector_table DCD sfe(CSTACK) DCD Reset_Handler ; Reset Handler DCD NMI_Handler ; NMI Handler DCD HardFault_Handler ; Hard Fault Handler DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD 0 ; Reserved DCD SVC_Handler ; SVCall Handler DCD 0 ; Reserved DCD 0 ; Reserved DCD PendSV_Handler ; PendSV Handler DCD SysTick_Handler ; SysTick Handler Nothing is trigged on debugger side and application looks hanged / stuck. In that case, code break is needed and the PC must be at the address of the Handler. Some IDEs provide the faulty calling code through Call stack window. (Keil® MDK-ARM µVision, SW4STM32). If it is not the case, display registers and find the faulty code address in SP + 0x18 In SW4STM32 all weak default handlers point to the same DefaultHandler which can be confusing. A more efficient approach is to trap the exception by instrumenting Handlers. |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
