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Recent content by Nagesh29

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    [SOLVED] SIM900 stupid modem no SIM_VDD

    @micro-hopless https://nageshjoshi.wordpress.com/2013/04/20/tcp-communication-using-gprs-modem/ You can try the above link for SIM900 AT commands along with the responses.
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    [SOLVED] SIM900 stupid modem no SIM_VDD

    I think you need to increase your voltage. The let will blink at low voltage also. But sim detection needs some higher voltage level.(Exact 5V)
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    [SOLVED] SIM900 stupid modem no SIM_VDD

    Are you getting the proper supply voltage at SIM900 modem?
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    MPLAB version is 8.30 and C18 3.12. Screenshot of the error msg is attached below. https://obrazki.elektroda.pl/5819793800_1382424574.png Thank you.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    @Jayant Sorry to disturb you again buddy.. Your MPLAB project works perfect but when I try to open your project in my mplab IDE it is not working. So, I converted your project as per my MPLAB IDE version compatibility. But IdleI2C(); function is not working there it shows error.. Thanx in advance.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Thanx buddy.. Thank you very much.. It works perfectly fine.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Yes Jayant.. But I2C debugger is not showing any data in proteus. It is not working on hardware too.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    @Jayant: Hex file from my micro c project works perfectly in the same Proteus simulation.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Thank you Jayant for your co-operation. PFA for complete solution.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Resetting if last while(1); loop is present. Hanging if that loop is removed. Also, I disabled the WDT in code. In that case my timer interval window works perfectly fine in Proteus. But I2C debugger window is not showing any data. How should I disable WDT in proteus?
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    The same problem persists.. rtc resets after every 2 seconds.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Already checked with this.. In that case, my Proteus simulation is continuously running and hangs after some time.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Thanx Jayant. Removed while ( !DataRdyI2C() ); Transformation functions are already in main a while(1) loop. Should I use another while(1) loop for those functions only?
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    @jayant.. PFA for udated code.. Thanx.
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    [PIC] Spurious SCl transition detected in proteus: RTC DS1307 and PIC 18F4520

    Thank you very much for your response.. I have added some delay between start and stop conditions. Now, my rtc timer works fine but resets after 2 seconds. Also, If I have disabled my watchdog timer I2C timer works good but I2C debugger is not showing any value there. Plz Help !

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