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EK-TM4C123GXL: Specifications for advancing with tm4c123

JAVIZ zAMEN
Prodigy 25 points
Part Number: EK-TM4C123GXL

In my application,

I need to sample 10 analog channels (connected to photo diodes)

Each channel need to sample at 5KHz. And the resulting values from 10 Channels are to be sent to RS232 port at a high baud rate 115200.

Can this be achieved with TM4c123 MCU?

I need a go ahead if there is no technical problem with this config, so that I can do as required.

Please also if the community can point towards some code resource to that, i will be grateful

Thanks

  • 0
    TI__Guru**** 191156 points

    Hi,

      ADC is rated for 1Msps. This means at 5kHz rate, you can convert up to 200 samples. You are only measuring 10 samples so should be no problem in my opinion. As far as if 115200 UART is fast enough, you need to answer how much data (e.g. how many bytes of data you are going to send) in each 0.2mS (@5kHz). I will suggest you do some measurement. 

    There is a ADC example using uDMA to take ADC inputs at 16kHz rate.  You can reference at C:\ti\TivaWare_C_Series-2.2.0.295\examples\boards\ek-tm4c123gxl\adc_udma_pingpong.