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      • ADC values for analog microphone

        Mohit | 07/197/2018 | 01:26 PM

        Hi,

        I am working with EFM32 Wonder Gecko Starter kit (BRD2400A Rev A00) , i have interfaced a mems analog microphone(INMP401) to the expansion header (Pin no. 12 ,PD4 on MCU) available on board. I want to record audio samples from mic and save it in wav format to SDcard. I have successfully interfaced sdcard module to board and able to read and write files. Issue that i am facing over here is regarding reading ADC samples. I took this code from application note for single channel ADC configuration, but i am getting 4096 everytime i try to read from that channel.

        void adcSingle(void)
        {
          ADC_Init_TypeDef       init       = ADC_INIT_DEFAULT;
          ADC_InitSingle_TypeDef singleInit = ADC_INITSINGLE_DEFAULT;
        
          /* Init common settings for both single conversion and scan mode */
          init.timebase = ADC_TimebaseCalc(0);
          init.prescale = ADC_PrescaleCalc(ADC_CLOCK, 0);
          ADC_Init(ADC0, &init);
        
          //mic is connected to ADC0_CH4 which is pin 12 of expansion headers
          singleInit.input      = adcSingleInpCh4;
          singleInit.acqTime = adcAcqTime32;
          ADC_InitSingle(ADC0, &singleInit);
        
          ADC_Start(ADC0, adcStartSingle);
          
          /* Wait while conversion is active */
          while (ADC0->STATUS & ADC_STATUS_SINGLEACT)
            ;
          
         sampleValue = ADC_DataSingleGet(ADC0);
          
        }

         

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      • I can't post in AMA Forum

        PETER LEONG | 07/187/2018 | 01:18 PM
        I can't post in AMA Forum
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      • editing a post should ...

        erikm | 07/185/2018 | 01:39 PM
        ... make it "updated" but does not.
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      • In the old forum you could send a participant a message not any more

        erikm | 06/178/2018 | 09:09 AM

        as an example I used it for the following

        "you say it is OK, please mark as 'solved'" many do not check a thread after their problem is resolved and as a housekeeping matter getting 'solved' flags is important it saves a lot of unnecessary looks.

        I do believe that all relevant should be in the forum, not in private correspondance, but a forum post does not necessarily alert the one you want to approach.

         

        do nmot go off on a tangent, other matters are much more imporatnt, but make a note of the word breaks at end of line

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      • Silabs FAE contact needed

        Pavithra R | 06/177/2018 | 12:44 AM

        Hi all,

        We are using Silabs PoE controller in our design. Unfortunately, the design is not working as we expected. We are moving into production by the end of this month.

        It will be great if I can get Silabs FAE contact or technical help. 

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      • get that "posts seen" moved to the server !

        erikm | 06/174/2018 | 11:20 AM

        I came home for the weekend, turned on my home computer, and had to examine every forum I participate in.

         

        This problem is more egregious since the issue was brought up bu several BEFORE the stupid cookie system was implemented

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      • SOC solution for sine wave generation with programming in the range of few MHz to 500 MHz

        ikram khan | 06/173/2018 | 10:33 PM

        Hi, I am Ikram form India. I am looking for SOC solution for sine wave generation with programming in the range few MHz to 500 MHz. With tuning resolution in less than a KHz. Please share your suggestions, based on possibilities.

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      • Where did the SiLabs employees go?

        madsci | 06/172/2018 | 01:19 PM
        The WiFi forum seems to have been abandoned by SiLabs.  It's been 17 days since any employee answered any question there, as far as I can tell.  Out of a 1,300 person company, is there really no one tasked with keeping an eye on the forum?
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      • links should be clickable

        erikm | 06/171/2018 | 09:12 AM

        Level 7

        stolen from another post

        Replied 16 hours ago

        some kba may helps (got from the i2c/smbus spec)

        https://www.silabs.com/community/mcu/8-bit/knowledge-base.entry.html/2011/09/02/selecting_i2c_pullup-ej8M

        https://www.silabs.com/community/mcu/8-bit/knowledge-base.entry.html/2017/06/09/i2c_pull-up_resistor-rJbx

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      • you will, probably, not 'catch' my edit below because

        erikm | 06/170/2018 | 01:07 PM
        when a thread is marked read it does not become unread when a post is added
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      • How much longer

        vanmierlo | 06/155/2018 | 02:02 PM
        How much longer do Silabs customers have to suffer this broken forum engine? It's been 7 months since the new version was introduced and I don't remember any progress since.
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      • "last updated" does not work

        erikm | 05/150/2018 | 02:51 PM
        it used to
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      • kickback

        erikm | 05/141/2018 | 12:38 PM

        it has happened before in a moderate flahion, but today I had to click the SS forum 5 times before it 'took' the previous 4 I saw a flash and was back to :the forum list.

         

        PS using Chrome

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      • How to change login

        Evgeniy Khmelev | 05/141/2018 | 10:14 AM
        I've changed working place, but I cannot change my login (corporative e-mail), it gives me error "federation ID is mandatory", and technical support is writing on my old e-mail. Please, help!
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