On Aug 9, 2011, at 11:29 PM, Juan Verdu wrote: > Hi, > > I created a mote using a MSP430F2617 microcontroller with libraries of > MSP430X under TinyOS 2.1, which compiling with the msp430-gcc( version 3.2.3) > of the mspgcc. I made several changes in Ubuntu and TinyOS operating > systems. This mote the program through a USB port using BSL pins, I used the > pins VCC, GND, RST #, TCK, and RX_BSL TX_BSL (P1.1 and P2.2) of the > microcontroller. With this configuration using the tos-bsl I could program > the micro with applications like Blink which makes it the right way. > I've also tried to interrupt the execution by pressing a button and done > right. When I run the application TestSerial not done correctly, I have > another mote which made by me if it does well but not the last two motes > and all hardware configuration are identical in all cases. In all the motes I > have another USB port to run the application using the pins VCC, GND, > TX_Uart0 and RX_Uart (Pins 29 and 40 of the MSP430F2617 64-pin). I have to > indicate that the mote that works well all the time I tried it with Code > Composer from Texas > so do not know if some registers like those were modified . > Using a tool like Siow (serial) I got the following results: > > Mote good: 7E 45 00 FF FF 00 00 08 00 89 00 09 00 00 00 00 00 00 81 91 7E ... > Motes incorrect: FE C5 00 FF FF 00 00 08 00 09 00 08 00 00 00 00 00 00 E0 69 > FE ... > > The speed with which I use is 115200 but I have also tried other speeds. > > I think it's a problem of synchronizing clocks using the UART USC but I'm > not sure, Could someone help me?
That sounds like a likely hypothesis, due to the distribution and form the bit errors take. Do you observe a lower bit error rate at slower speeds or does it stay the same? Phil _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
