Search:

Type: Posts; User: Aussie Susan

Page 1 of 20 1 2 3 4

Search: Search took 0.02 seconds.

  1. Closed: Re: stretching the 0 pulse of a digital output with a certain T

    The problem with the circuit you propose (monostable and NAND gate) is the NAND gate. You want a '0' output if EITHER the monostable is low (in the case of the pulse being shorter than the monostable...
  2. Replies
    6
    Views
    166

    Closed: Re: 1PPS Generator Module

    How accurate do you want it to be when the GPS signal is 'lost'?
    How long do you expect to not have the GPS signal and so (same question) how long do you need the 1PPS signal to be used?
    What do...
  3. Closed: Re: Help wiring a Ne555 Timer delay module (monostable?)

    What is it that you actually want the board to do?
    As far as I can tell, the sequence of events is:
    - you press the switch which powers up the circuit
    - when the circuit is powered, it...
  4. Replies
    1
    Views
    143

    Closed: Re: Time elapsed callback in STM 32 HAL

    I'm not sure what you mean bu a callback function in the main loop - did you mean that 'main.c' file?
    Anyway, the HAL tries to separate the code that it generates from the code that you write...
  5. Closed: Re: WI-FI module with at least 2MBps data rate

    SPI and UART are totally independent interfaces on the ESP8266 devices. Also the max clock speed for the SPI interface is the system clock/2 (40MHz?) but that would probably imply the need for DMA to...
  6. Replies
    16
    Views
    656

    Closed: Re: PIC 16f877A interrupt

    How is the interrupt derived from the sensor?
    I take it from your descriptor that you are continuously monitoring the sensor output with the MCU (and so displaying the value the LCD). Is there a...
  7. Replies
    16
    Views
    656

    Closed: Re: PIC 16f877A interrupt

    You seem to be talking about 2 interrupts - one from the outside world to detect the over-current situation, and the other from the internal timer.
    I find it hard to see how the internal timer can...
  8. Closed: Re: Connecting a SPDT switch to I/O pin of a CPLD

    Not the question you asked but you will need to take contact bounce into account when you try to detect the change.
    The 'classic' approach is to use a resistor from VCC to the switch with the other...
  9. Replies
    20
    Views
    1,367

    Closed: Re: PIC24 PWM Input read

    Firstly, don't guess these things. The data sheet states very clearly what each of the PORT, LAT and TRIS registers do (as well as the various analog/digital registers where appropriate). TRIS (short...
  10. [PIC]Closed: Re: SOFT_UART pic18f452 serial communication

    @Baileychic - AboudaKing has admitted that this is part of a project and will not ever be implemented. Therefore I hope that (s)he also gives you the credit for passing the course!
    Susan
  11. Replies
    20
    Views
    1,367

    Closed: Re: PIC24 PWM Input read

    In post #17, you say that you set the TRISB bits (12, 13, 14 and 15) to '0' (actually I can't see that in the code you post in #18) but the code in the last code block in post #18, you have them set...
  12. [ARM]Closed: Re: Build a .hex file which including the Bootloader [STM32F]

    Have you searched the Internet for "STM32 Bootloader"? Even "STM32F103 Bootloader" provides a lot of information.
    ST Micro put out a number of application notes on bootloaders and they and others...
  13. Closed: Re: ADS1115 issue for taking values of 4th digit after decimal point

    Also note that you really need a *VERY* clean board design, power supply etc. to measure voltages to that level of accuracy. In my experience,you can reliably get 8, maybe up to 10 bits, from an ADC...
  14. Replies
    20
    Views
    1,367

    Closed: Re: PIC24 PWM Input read

    The dsPIC33EV256GM106 has a single Fast PWM module and the PTEN bit you refer to turns the whole module on or off.
    The module has 3 PWM generators within it that can be individually controlled - you...
  15. Closed: Re: Automatic temperature controller using pic 16f877a [MOVED]

    I think that 'PORTC.RC5' is wrong is this PORTD.RD5 or PORTC.RC5?
    I can't see where you are setting TRISD to make pins 2, 3 and 5 as outputs.
    Depending on the load on the lines to the relay and...
  16. Replies
    20
    Views
    1,367

    Closed: Re: PIC24 PWM Input read

    Have a look at the XC16 User Guide for the newer format for specifying the CONFIG setting using the #pragma directive. While what you are using is not wrong, I think the #pragma format is a little...
  17. Replies
    20
    Views
    1,367

    Closed: Re: PIC24 PWM Input read

    If you can program the MCU then the PGC/PGD lines are probably OK.
    I would check that you are actually doing a 'debug' build with the correct programming pin pair specified and programming that into...
  18. Replies
    20
    Views
    1,367

    Closed: Re: PIC24 PWM Input read

    If you can see the characters/strings that are generated by the code then you know that the 'putU2()' function is working and that the BAUD rate etc is allowing characters to be exchanged.
    What you...
  19. Closed: Re: Unable to understand a part of code for ARM

    How you go about this also depends on what support tools you want (or have) to use.
    If you use the STM32CubeMX tool, it will generate the bulk of the code for you and all you need to do (in this...
  20. Closed: Re: input impedance to ADC pin on PIC16F18856

    While what pjmelect says is true, practically speaking you are doing well to get 8 to 10 bits out of an 12-bit ADC with any real value - the least significant bits are typically noise. Of course...
  21. Replies
    9
    Views
    627

    Closed: Re: Arm RTOS C++ newbie advice

    STM32CubeMX is free and I run it under Eclipse which is also free. This environment runs on Window 10 although I run it on MacOS (its all Java based).
    Susan
  22. [SOLVED]Closed: Re: Problem programming a 16F1708 using PICKIT 3

    Have you got the PicKit3 options (in the MPLAB) set to LVP as that would explain the low voltage.
    (I've not used MPLAB for a very long time so I can't tell how to check for this setting in the IDE.)...
  23. Closed: Re: Counting pulses from external source PIC16F877a

    Go back to the basics - for the moment forget about the sensor or counting pulses etc and just make the LED flash on for (say) 1 second and off for 1 second.
    When you know that you have that part...
  24. Closed: Re: MCP4261 need manually power off from time to time or not working well

    Then you need top look for the root cause of the overheating.
    Look for things such as drawing too much power from an output pin, or the supply voltage going high, or a damaged MCU. (This is...
  25. Replies
    9
    Views
    627

    Closed: Re: Arm RTOS C++ newbie advice

    IIRC the STM23CubeMX has an RTOS option.
    Personally I don't use C++ for embedded apps as I consider the code should be short and tight as possible to use as little memory and CPU as it can. Things...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4