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4316139955_stm1_stmicro_com · 2016-03-11

Posted on March 12, 2016 at 00:38I'm encountering a very bizarre behavior with standby.My code enters standby using HAL_PWR_EnterSTANDBYMode(). At power-on, it enters standby properly, comes out correctly after one intentional IWDG event (the reason...

4316139955_stm1_stmicro_com · 2016-01-27

Posted on January 28, 2016 at 02:45I've turned up nothing relevant in forum and web searches, so I apologize in advance if it turns out I've overlooked something painfully obvious.I'm experiencing an issue with (SWO) debug output via printf(). When ...

4316139955_stm1_stmicro_com · 2016-03-14

Posted on March 14, 2016 at 22:13Clive - thank you for the ''sanitize everything'' encouragement. I finally found the problem. It was related to the RTOS being allowed to run. It wasn't the RTOS's fault - it's doing exactly what it should be doing.T...

4316139955_stm1_stmicro_com · 2016-03-11

Posted on March 12, 2016 at 02:13That's an interesting tidbit concerning NRST - I'll file it away for future reference!RTOS comment acknowledged, but I don't think it applies in this case (if I needed to dig, I have the source).It did occur to me th...

4316139955_stm1_stmicro_com · 2016-03-11

Posted on March 12, 2016 at 01:28Ooops - my apologies: I misread your question!No, there's nothing driving NRST high externally - no active line, no pull-up.

4316139955_stm1_stmicro_com · 2016-03-11

Posted on March 12, 2016 at 01:26Hi, Clive! Thank you for the reply!The behavior is identical when running without the debugger attached. (I have an LED configured to give an ''about to enter standby'' flash, and due to the way the internal state ma...

4316139955_stm1_stmicro_com · 2016-02-04

Posted on February 04, 2016 at 23:11I found my problem. For the benefit of others who might run into the same issue:If you ever run into SWO printf() issues (where supported by the chip of course), in addition to checking relevant project and debugg...

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L152RE, entering standby via HAL call, execution continues after WFI - huh?

Odd problem with SWO printf() output, STM32L152RET

Re: L152RE, entering standby via HAL call, execution continues after WFI - huh?

Re: L152RE, entering standby via HAL call, execution continues after WFI - huh?

Re: L152RE, entering standby via HAL call, execution continues after WFI - huh?

Re: L152RE, entering standby via HAL call, execution continues after WFI - huh?

Re: Odd problem with SWO printf() output, STM32L152RET