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Original question:
Tool/software:
regarding an earlier question "CCS/TM4C1294NCPDT: ADC with DMA configuration" and answer from
Bob Crosby including an example he attached:
Here is a sample program that might help you. It uses the timer to trigger the ADC conversions, but then uses the uDMA in ping-pong mode to collect the data. Use the "File"->"Import" feature of Code Composer to import this project into your workspace.
/cfs-file/__key/communityserver-discussions-components-files/908/3125.ADCwDMA.zip
I downloaded it and set it up, I see after 3 seconds or so the data getting to the 2 ping pong buffers but then no interrupt happens especially the ADC_handler - that reinitiates the DMA - I could not get it to happen.
what is missing?
Another question is, can I get the DMA to work constantly (with chain DMA ?) without the CPU restarting it?
Regards
Maccabi
Hi,
There is an updated version of ADC with DMA in the TivaWare SDK. You can find the example at C:\ti\TivaWare_C_Series-2.2.0.295\examples\boards\ek-tm4c1294xl\adc_udma_pingpong. This example will continue to run. You can open a terminal to see the ongoing ADC results like below screenshot.
