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Hi, i am unable to use the adc in interrupt mode. following is the adc intialisation i have done. I am using adc 1 channel 14. I have added a IRQ handler : /////////////////////////////////////////////////// void ADC_IRQHandler (void){ //fetch the value dataReg = (UNSIGNED16)ADC1->DR; dataReg++;
} ///////////////////////////////////////////////////
void adc_Init (void) {
// ptr = ADC_IRQHandler; RCC->APB2ENR |= (1<<9); /* enable periperal clock for ADC1 */
ADC1->SQR1 = 0x00000000; /* 1 conversions */ //ADC1->SQR1 |= 14<<5; ADC1->SQR3 = 14<<0;//(3<<10) | (2<<5) | (1<<0); /* set order to chn14 */ ADC1->SMPR2 = (5<< 9) | (5<<6) | (5<<3); /* set sample time (55,5 cycles) */
ADC1->CR1 = 0x00000100; /* use independant mode, SCAN mode */ ADC1->CR1 |= 1<<5; /* enable end of conversion interrupt */ ADC1->CR2 = 0x000E0000; /* data align right, cont. conversion */ ADC1->CR2 |= 0x0000001; /* data align right, cont. conversion */ /* EXTSEL = SWSTART */ /* enable ADC, No DMA mode */ ADC1->CR2 |= 0x00500000; /* start SW conversion */ }
/////////////////////// The entry of this IRQ is present in the stm32f10x.s file. when EOC bit gets set in the simulator my IRQ function does not get called. Has any body used this functionality, if you have a sample project can you please mail it to me . my mail id is rohitd@kpitcummins.com . we are using stm32fx103rbt6 processor.
thanks and regards rohit
Have you looked at the samples provided here by Keil?
Have you looked at the samples provided by ST and included with the FWLib?
You haven't shown any code for setting-up the NVIC...
"please mail it to me . my mail id is rohitd@kpitcummins.com"
This is a Public forum - not a free private consultancy service!
Excuse me ANDY , it seems u dont know english well , you dont know the differece betwwen the request and an order,if you have any problem in my post u may not reply to it, if you are a moderator u may delet the post.
And there i sno need to reply to this post any further,not atleast you
and if i am asking for help, it means i have tried for a particular thing for long and ,dont want to waste more time on a thing which others may be knowing already. This is what forums are all about
1) It is common practice to not request answers by mail. Why? a) It will not help anyone else with the same problem. b) Someone may respond with random garbage, and no other forum visitor will be able to notice, and warn you.
2) Assuming that a request for help is the same as having spent significant time with a problem is way wrong. Some people do try themself before asking. Some people have web forums as the #1 step, followed by paste and compile as step #2 and #3. Because of this, it is important that _you_ supply complete information about your problem, and what you have tested, what information you have read, what results you expected, what results you did get...
3) Visiting a forum will always open the possibility that you get answers you do not like. That is one of the things you are "paying" for requesting free help. Telling responders that they have a problem with their english is not a good way to get people to invest time in your problem. Other readers will see your comment and consider: Why bother...
Excuse me ANDY , it seems u dont know english well
Ho, yeah.
dont want to waste more time on a thing which others may be knowing already
So why did you not mention what you have tried?
How can anyone avoid suggesting things you've already tried if you don't say what you've tried?!
You asked for samples - I pointed you to two excellent sources of samples.
You still haven't shown your NVIC setup code.
(Sorry for my bad English ability.)
Hi rohit,
Though, Andy Neil's responses are usually forthright and unsparing, but his responses are really helpful.
From my understanding, Andy is a very good person, he is more than willing to help people.
We all come from different countries and cultures, so that, We need more patience and tolerance, I believe.
"Much of what looks like rudeness, is not intended to give offense. Rather, it's the product of the direct, cut-through-the-courtesy communications style that is natural to people who are more concerned about solving problems than making others feel warm and fuzzy."
And I know that Andy did already provide help to you.
So, why don't you just tell us something about the samples provided by Keil and ST; and show your NVIC source code?
Please rohit.