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Found 2 results

  1. Hi, I’m trying to get my MSP-EXP430FR5969 (or preferably MSP-EXP430F5529) to work with BOOSTXL-SHARP128 at a few uA when it is not selected or being written to, i.e. when it’s idle. My MSP430s consume only a fraction of a uA in lowest power mode, but as soon as I add myScreen.begin() to setup(), it all goes crazy. In my sketch (below), I have set all ports as outputs to ensure there are no floating inputs. This reduces current consumption from several hundred uA to ~160 uA. I then connected my BOOSTXL-SHARP128 to my MSP-EXP430FR5969 via jumper wires to LCD_DISP, LCD_CD, SPI_CLK, SPI_MOSI, and gnd. This is enough to enable me to write to the display (ignore the green LED - I disabled this later). I tied MISO to gnd, since it is an input and isn’t used – this reduces the current consumption further to ~140 uA. I’m guessing P1_7 was re-initialised somewhere in one of the function calls to be an input, even though I initialised it as an output in setup()? Interestingly, my code doesn’t write anything to the display when the module is plugged directly onto the MSP430, and the current consumption also shoots up to a couple of mA! Am I correct in thinking that even after I have initialised the ports as outputs (using PnDIR) and set the outputs to HIGH (using PnOUT), sketch functions can still use those ports as outputs, i.e. the output ports can still be switched between HIGH and LOW by code in loop()? I was expecting to get the current consumption (measured on J9) down to just a few microamps. Is there anything I’m missing? Thanks in advance for your help (and for responses to previous questions!) Kris
  2. Hi All, I've been trying to get my BOOSTXL-SHARP128 to work. I've done loads of searches, but I can't find a solution. Does anyone know how to get the module to display a simple "Hello!" type message using Energia? Please see my code - below. It just seems to display lots of lines and dots. Any ideas what I'm doing wrong? Any help would be much appreciated.
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