Register 3 Posted August 21, 2013 Share Posted August 21, 2013 Hi, SOLUTION They got to share the GND to work correctly... PART ANSWER : (see original question bellow) The bread board is powered by batteries. So i think it's maybe a problem between the powering of the launchpad and the breadboard. So i wired the VCC and ground to those of the launchpad and the display is correct on the serial. So it's a problem of voltage references or ground or something (i'm pretty new to electronic) so what can i do to send informations (debug) to energia through launchpad with external kit powered by batteries? ORIGINAL QUESTION I put a 2553 on a breadboard and I'm trying to use the energia console to display values. When the chip is on the board there no problem. I connect RXD/TXD from the board with TXD/RXD on the chip. On the jumpers area on the board (J3) if I connect the upper pins RXD and TXD it did not workn if i connect the 1st upper pin RXD with the 1st lower pin TXD it kind of worked but with gibberish : Send 1 : 24.50Sensor 3T Quote Link to post Share on other sites
roadrunner84 466 Posted August 21, 2013 Share Posted August 21, 2013 Did you load the DCO constants? Otherwise, try clocking from a crystal. Quote Link to post Share on other sites
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