LPC1857-NVIC_SystemReset() causes processor hanging

mrl20g — Mon, 02 Dec 2024 10:57:46 GMT

Hi,

I'm using LPC1857 with Keil RTX and observe that randomly a rare hard fault is generated. To overcome the issue, I'm planning on performing a system reset in the hard fault handler. But when NVIC_SystemReset() is used, I can observe that the processor gets stuck after system init and reaching the clock setting code:

LPC_CGU->XTAL_OSC_CTRL = (0 << 0) | /* Enable oscillator-pad */
(0 << 1) | /* Operation with crystal connected */
(0 << 2) ; /* Low-frequency mode

I can step through in debug and can see the same code is called when a reset is issued from the debug window button. During this, the execution passes this section successfully and reaches main. If the NVIC_SystemReset() is called, the debugger loses connection on reaching the above section. Anyone can guide me on how to resolve this?

Re: LPC1857-NVIC_SystemReset() causes processor hanging

Pavel_Hernandez — Tue, 03 Dec 2024 00:52:59 GMT

Hello, my name is Pavel, and I will be supporting our case, I will review your case, when I have more information, I will contact you.

I will follow one case, only I will close this.

Best regards,
Pavel

LPC Microcontrollers中的主题 LPC1857-NVIC_SystemReset() causes processor hanging

LPC1857-NVIC_SystemReset() causes processor hanging

Re: LPC1857-NVIC_SystemReset() causes processor hanging