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ike

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Everything posted by ike

  1. http://www.ti.com/lit/ds/symlink/msp430g2553.pdf Page 16: Table 13. Timer1_A3 Signal Connections
  2. Isn't just change channel command? From DS:
  3. Your AD say: Source: http://haytagstore.com/portfolio/our-technology/ So this guy asking you just need to use 433MHz and coherent PSK with a 1/2 rate, k=9 convolutional code and a 4/5 rate interior reed solomon code. I wonder if this can be done with those cheap dumb $1.25 SAW 433MHz FR modules?
  4. You need to connect GND too. For current to flow you need 2 wires. And you may try with 1k ohm resistors instead of 10k.
  5. Xuan you can always use spirilis's lib: https://github.com/spirilis/msprf24 and https://github.com/spirilis/msprf24/tree/master/TESTPROGS/g2553
  6. But EK-TM4C123GXL - Tiva is better than MSP-EXP430F5529LP and is at the same price. At the moment MSP-EXP430F5529LP is not available and you can order EK-TM4C123GXL and you can start playing with it now.
  7. I have a question for TI Why should I buy game changeling, when Tiva is here now and offer 3.2 times more speed, 2 times more bits, 2 times more flash, 4 times more ram, 4 times more EEPROM / info mem ?
  8. http://en.wikipedia.org/wiki/Travelling_salesman_problem
  9. https://github.com/RickKimball/msp430_code/blob/master/fabooh/examples/serial/dco_calibrate/goldilocks.cpp
  10. And I wonder why. Those "cheap chinese knockoffs" are made with the same chips and passives as the "original" Arduino. And if seller have more than 99% positive feedback then he have decent QC and those "knockoffs" are as good as original. For only $8.80 you can get Nano Arduino atmega 328 (32k flash, 2k RAM, 1k EEPROM ) with FTDI chip that can do serial up to 3000kbps or for only $10.50 you can get Arduino UNO with ATMEGA 328P + ATMEGA 8U2 , yes with free shipping included in price. So right now msp430 LaunchPad is not a deal anymore, like it was 2 years ago.
  11. How do you know that they don't have Chinese certificate? And you can be sure that those cheap ebay's modules work, because sellers have 99.++% positive feedback with thousands sales. And I don't talk only about nrf24l01+ , but all of those cheap modules like LCD, HC-SR04 , LM2596 , Bluetooth RF , DS1302 , PL2303HX and so on.
  12. What do you mean? Arduino is cheaper than LaunchPad.
  13. I don't know why you keep bitching about those cheap nrf24l01+ modules. You know that at this price tag you can't get any other RF module even those cheap 433 TX and 433 RX 2 transistors modules. Can you recommend good and cheap 2.4GHz modules that are not fake? And why you always talk about 433MHz, but you never mention 315MHz and 418MHz?
  14. ike

    ACLK 32kHZ

    Can you post picture of this 16kHz 3pin crystal?
  15. This project DIY GoPro HD Camera Controller: http://benlo.com/msp430/GoProController.html is not low voltage 0.9V and it's not low power. If you use any mcu with sleep you will get the same result. "The story of the MSP430, as I have heard it, is a result of the fall of communism in Eastern Europe." I doubt that.
  16. So you mean that msp430 can withstand high voltage on it's reset pin? That is so cool. So you mean that msp430 don't have BOR circuit? That is so uncool.
  17. When I read this article "Run an uC from an AA-battery" http://spritesmods.com/?art=ucboost&page=3 , I was wondering how can I duplicate it on msp430. I notice that there are some extra parts. Well I still need inductor and battery but other parts are not needed. In msp430 itself there is clamp diodes from any pin to ground and to Vcc and there is switching transistor. So scheme is like this: The negative terminal of battery goes to GND pin of msp430. The positive terminal of battery goes to inductor and the other inductor pin goes to one of GPIO pins of msp430, for example pin P1.4. On V
  18. sirri what is the point of that? You can use 2pcs AAA, or if the size and weigh are concern then use CR2032.
  19. jpnorair you can get now new version of R pi model A, it's is cheaper than model B. R pi don't need floating point, because it have A/V encoder/decoder module. Anyway most of the embedded applications don't need floating point.
  20. Of course that code will not work for your application, as I told you: You will have to modify it. With WDT_MDLY_8 you have 8ms and with WDT_MDLY_0_5 you have 0.5ms intervals, if you use fSMCLK @ 1MHz.
  21. It's stupid to wait in ISR. athornsb modify this code http://bennthomsen.wordpress.com/ti-msp430-launchpad/using-the-switches/ to suit your needs.
  22. Your eyes are too slow. Try with int so[10]={0xC0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90 }; void hienthi(int number,int led_enable) { P2OUT=so[number]; P1OUT |=led_enable; _delay_cycles(200000); P1OUT &=~led_enable; }
  23. Whitepapers is for stupid guys and marketing people, give us Erratasheet.
  24. ike

    WDT as RTC

    Cool, but why don't you use WDT_ADLY_1000 (WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL) /* 1000ms " */ . And where did you explicitly setup ACLK to use xtal generator, where did you setup xtal generator to add 12pF and where did you check xtal lock? #include "stdint.h" uint8_t secs=0; uint8_t mins=0; uint8_t hours=0; void rtc_setup() { WDTCTL = WDT_ADLY_1000; // WDT 1000ms BCSCTL3 = XCAP_3; /* XIN/XOUT Cap : 12.5 pF */ do{ IFG1 &= ~OFIFG; // Clear OSCFault flag __delay_cycles(100); }while (IFG1 & OFIFG
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