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StevenSam

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About StevenSam

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    http://www.think-engineer.com

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    Reading, UK
  1. Hi All, I am trying to measure some timing properties of a protocol I have written that uses the EasyLink library. I was using micros() before and after I perform a send, which also waits for an acknowledgement. In addition to capturing micros() I am toggling a pin so I can see how long the event takes on the scope, and when the corresponding events happen on the other CC1310. micros tells me the event took ~1400uS, however I measured about 33ms on the scope, I then replaced micros with millis() in my code and I am getting 33ms from that as well. I would really like to be able to measure with sub ms accuracy, but micros just seem to report the incorrect value. Can anyone offer any assistance with how I can get micros working properly with the CC1310 LaunchPad? Regards, -Steve
  2. Hi All, I am working on a project using the CC1310 LaunchPad, and it will be powered directly from a 3V (nominally) battery. I want to use the ADC to accurately read the voltage from one of my sensors, and the problem that I am having is that the reference seems to be relating to the voltage the LaunchPad is running from. I have tried using analogReference(), but it wont compile with the parameter INTERNAL1V5, and when i try INTERNAL2V5 it does compile, but it still seems to be using the battery voltage as the ADC reference. Please can someone explain how I can get a stable voltage reading on the ADC despite the variation in the battery voltage? I am also designing a custom PCB for this project, based on the LaunchPad reference design, if that helps? Additionally, it would be very helpful to monitor the battery level. Can the cc1310 do this, or will I need to connect the battery to an ADC input pin? Regards, -Steve
  3. StevenSam

    CC1310 LaunchPad Low Power

    Hi All, I'm new to the forum, and fairly new to developing for TI chips, that being said I've played about in TI-RTOS for the SensorTag. I am trying to build a low power sub-GHz network, and as such I've got hold of some CC1310 LaunchPads, and I'd love to use Energia for my project. Can someone please explain how to put this board into any or each of the different low power modes it has? I've tried using the Sleep() command, but the compiler tells me it's not defined, and when I measure the power of the LaunchPad board during a Delay() command I'm seeing several mA. If I can get this down to tens of uA I'd be very happy. All and any help is greatly appreciated. Regards, -Steve
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