LINUX AM335X ADC DRIVER DETAILS:
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LINUX AM335X ADC DRIVER
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Next I'm planning to use the analog readings and put them into a web page hosted by the BBB. Understanding and using the PRUs has been like chasing a unicorn for linux am335x adc, as a new student of embedded systems.
Chapter 15: Real-Time Interfacing with the PRU-ICSS
On listingledButton. So, is it linux am335x adc that on the PRU register 30 is output and 31 is input, or does every pin need to be assigned as output or input in the. From chapter 6, I understood that the direction of the pin is assigned by the device tree overlay.
Just to confirm that I have understood this correctly, here's a sample of defines for various other pins that I'm planning to use as linux am335x adc from the PRU, following the same format as your example. Thanks Alwyn — I appreciate your support.
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Well spotted! Yes, the overlay sets up the pin direction and the memory address alone is accessed here by the PRU. I will add a note to the linux am335x adc code. On your definitions. Kind regards, Derek.
Beaglebone PRU ADC -
So, linux am335x adc up on using the masks to trigger multiple pins simultaneously: In short, It works! But that generated an error: ultrasonics. And it works fine. Any suggestions on what could be wrong? Are you using nano -c program.
Linux Kernel Driver DataBase: CONFIG_TI_AMX_ADC: TI's AMX ADC driver
This is a cut-and-paste from my test program:. Hi Derek are the prus capable of controlling resources like am ehrpwm and ecap modules also?
Im making a quadrotor and real time is important to me. Despite the obvious complexity, I think this would be the most straightforward solution. It would have linux am335x adc known program cycle duration and it would pick up the current duty cycle values from PRU shared memory.
You could adapt the controls systems code without having to re-calibrate the PWM timings. Thank you yet again Derek the fact that they had shared memory just flew past me and your right it is a clean control system. After loading the dtbo, I thought that the pins would work fine. After much struggle and review of chapter 6, I decided to repeat the steps listed under GPIO Digital Output, to set the direction of the pins to outputand now linux am335x adc works fine. Have I read the TRM linux am335x adc, and identified errata? Hi Alwyn, Yes, the pins still need to be exported.AMx ADC Driver's Guide To test ADC on AMx EVM; To test ADC on Beaglebone: #include linux/platform_data/ti_adc.h>.
Linux, RT-Linux: AMx and AMx - ADC and Touchscreen Overview · AMx.