Failed to insert all hardware breakpoints: You may have requested too many hardware breakpoints/watchpoints.

[JWolf.3]

I started getting this message when I try to debug my code. However, there are currently no breakpoints in my code at all. I have gotten this in the past and I deleted and redownloaded the IDE which I really do not want to do again. I am running it on Mac. Any suggestions are helpful.

// Simple ADC Reader
// ADC1_1 on PA1
// Port A on AHB1
// ADC on APB2
 
#include "stm32f4xx.h"
#include "printUSART.h"
 
int val = 0;
 
int main(void){
 
	USART2_Init();
 
	RCC->AHB1ENR	|= RCC_AHB1ENR_GPIOAEN;
 
	GPIOA->MODER	= GPIO_MODER_MODE0_0 | GPIO_MODER_MODE0_1;
 
	RCC->APB2ENR	|= RCC_APB2ENR_ADC1EN;
 
	ADC1->CR2	= 0;
 
	ADC1->SQR3	|= ADC_SQR3_SQ1_0;
 
	ADC1->CR2	|= ADC_CR2_ADON;
 
	while(1){
		ADC1->CR2 |= ADC_CR2_SWSTART;
		while(!(ADC1->SR & ADC_SR_EOC)){}
		val = ADC1->DR;
		printf("\n%d", val);
 
	}
 
}

[waclawek.jan]

https://community.st.com/s/question/0D53W00000kv9O2/how-to-get-rid-of-cachedghostphantom-breakpoint-in-stm32cubeide

https://community.st.com/s/question/0D53W00000To7ZWSAZ/why-do-i-get-failed-to-insert-all-hardware-breakpoints-you-may-have-requested-too-many-hardware-breakpointswatchpoints-since-i-have-no-breakpoints-or-watchpoints-at-all-not-even-inactive-breakpoints

I don't Cube/Eclipse.

JW

[Javier1]

I get this error in cubeIDE when indeed i add more than 6 breakout points. 

I can resume normal debugging when i remove breakout points down to 6

[JWolf.3]

That would make sense except I don’t have any breakpoints at all in my code...

[Javier1]

do you have more than one project opened in stm32ide workspace?

maybe youre trying to debugg the wrong code?

[krzysztof-idb]

Encountered today the same problem today - no breakpoints in the breakpoint view, used brk / del debugger commands to delete all breakpoints but still no luck.

Eventually figured out that the function, where I wanted to put the breakpoint in, was likely optimised to inline and the IDE was actually trying to insert multiple breakpoints instead of one - and I only had 3 HW breakpoints available in the MCU.

If that is the case need to disable optimisation or find another way/place to insert the breakpoint.

[Ozone]

Your could try to start the application in the debugger (run to main), switch to mixed / instruction stepping, and set the breakpoint there, at assembler level.
I don't do Cube either, but this works fine with SeggerES.

[JS_]

Also had this problem today, and want to reiterate what the above commenter said: If you put a breakpoint in an inline function, it's like putting a breakpoint wherever that function is called/inlined. In my case I removed the inline keyword temporarily...