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Showing results for tags 'output'.
Found 4 results
OpenCollector vs INPUT, OUTPUT, INPUT_PULLUP PinModes...
curtis63 posted a topic in Energia - MSPSo, I'm using Energia and getting frustrated with Wire.h. I need to do some i2c communications and figured it would be fairly easy to write my own Bit-Bang implementation of i2c. I got started and things seem to be working pretty well. However, I discovered the concept of OpenCollector. It seems that OpenCollector means that the pin is set to High by default with a Pullup Resister and you just set it to LOW and then it goes back to high when you're not setting it to LOW. It also goes to low when a slave i2c device sets it to LOW. Question is how the heck do we do this with Ene
Energia CC3200MOD Incorrect GPIO Output
seanhodgins posted a topic in Energia - TivaC/CC3XXXI'm getting very frustrated with this CC3200MOD, and the CC3200 in general. First it started with the A0 analog channel always reading 4096 but now on to some GPIO problems. This should be fairly straight forward but apparently they make everything difficult, so I don't know what to say. I have made a custom PCB for using the CC3200MOD. Its supposed to read the 4 ADCs, 3 for accelerometer, which is working great, 1 for an analog microphone, which isn't working at all, but I've given up on it and going to just mux with one of the 3 working ones. Now I have 3 LEDs on the board for general LE
Output Pins Don't Work
ClydeTombaugh posted a topic in Energia - MSPHi, I'm running Energia on Windows 7 x64. My Launch Pad model is the MSP-EXP430F5529LP (25Hz) My board's green LED will light up when connecting to the computer, the red LED will flash while compiling and all onboard LEDs and buttons function when programed. However, whenever I try to program output pins and connect the output in question to ground, I get no current out. I have plenty of experience with Arduino and all programs I write for the Launch Pad work for Arduino. The GND, 5V and 3.3V pins on the LaunchPad all work fine. I have also used a number of sample programs, all to no
Driving BJT with MSP430G2553I'm trying to drive an NTE108 (BJT NPN) with an output pin on my MSP430G2553 and having trouble. The output (P2.4) of the MSP is connected to the base of the BJT through a 330 resistor and controlled via software on the MSP. I've attached a picture of the schematic (R1 is a recent addition). Pin P2.4 works as expected when connected to the LaunchPad. It can drive an LED and works when floating. I cannot test it with the BJT (NTE108) because I only have one and it is soldered down. I have moved the MSP over to a protoboard where it is supplied with a 3V regulator that can do 250mA.