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jazz

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jazz last won the day on February 1

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About jazz

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  1. Hi, Minimal standalone DS89C450 board with CH340 UART bridge and micro USB connector. Four LED's (blue power, yellow loader, green and red can be connected with jumpers to P0.1 and P0.2 pins) and reset button. On board is 16.384 MHz crystal (same as on DS89C450-KIT) that doubled make 33 MHz MCLK, and support 28800 bps UART. Price for board with DS89C450 chip and (EU) shipping with tracking is 25$ (paypal). demo.zip
  2. jazz

    Best SMT Machinery

    Maybe another forum is better place for this question. http://www.eevblog.com/forum/manufacture/
  3. I used sn74lvc2g04, only because I have them, left from another project.
  4. In my case, as you can see, intensity (brightness) of each segment is equal. To have this, time for displaying number "1" must be shorter than time for displaying number "6" (last digit). There is no any resistors. Common anode/cathode is powered by extra lvc logic gate, not by transistor, so hardware and software as it is, support both options, and mixed combination (for example 1 digit can be common anode and another 2 common cathode). It is codded in assembler, refreshing interrupt (0.5 ms per segment ~ 5 ms per digit) is triggered by WDT (timer peripheral is not used), and in worst case scenario, interrupt will take about 30 CPU cycles.
  5. This is OK, but my MSP430G2533 7-segment working (multiplexing) digit-by-digit without resistors. Current (and brightness) is handled by PWM (WD). Device (PDIP) is mounted under the display.
  6. Yes, it is modem manager, that should be blocked by udev rules. For recovering check here... https://github.com/energia/Energia/issues/925
  7. jazz

    Add MSP432 support to Arduino?

    This is TI. Go back with your IDE version, and board should work just fine. http://processors.wiki.ti.com/index.php/XMS432_Support
  8. jazz

    MSP4302553 problems

    Compare generated binaries by 32/64 bit version, and compare downloaded code to micro by MSP430-Flasher.
  9. Maybe this can help... https://github.com/gbhug5a/MSP430-BSL
  10. jazz

    Supported MSP430's

    Not for now.
  11. jazz

    Supported MSP430's

    BTW, If you don't want to design board right now, I have 2 breakout boards left, for MSP430x2xx 38 pin TSSOP devices.
  12. jazz

    Problems with Energia on MSP430 LaunchPad

    There is no problem today to find any IC from any semiconductor company in tiny package. Problem is to find something new in PDIP. MSP430G2553, and other TI MSP devices can be found in TSSOP and QFN package.
  13. jazz

    Problems with Energia on MSP430 LaunchPad

    We are on Energia topic, so I guess that if you want to use Energia for developement, there is limited number of boards or MSP430 devices with pin mapping, by default supported by Energia (MSP430G2553, MSP430F5529, MSP430FR4133, MSP430FR5739, MSP430FR5969, MSP430FR6989). All FRAM devices are with 20-bit CPU Xv2, same as 5xx/6xx flash family, but they are limited by FRAM wait states. However, it is easier to write to FRAM (same as RAM), than to flash, during runtime. For TI, flash 2xx/5xx/6xx family is finished story, and today they are pushing FRAM family. eZ-FET on G2 LP is limited with not updatable firmware and to some of 2xx SBW target, with 9600 bps USB-UART bridge. New LP's are with updatable eZ-FET Lite on board (open software and hardware) that can program all TI MSP430 SBW devices, 115200 bps USB-UART bridge and Energy trace. I guess that you can develop your project on Energia with G2 LP (that you already have), and than later (if there is need for this) port it to some other device.
  14. jazz

    Problems with Energia on MSP430 LaunchPad

    I guess that LPM3 with ACLK active should work fine in your case. It takes about 2uA.
  15. jazz

    An extra USB for MSP430

    MSP430 can be only USB device, not host. For MSP430 USB device, there is open source TI USB dev pack with examples. http://www.ti.com/tool/MSP430USBDEVPACK
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