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The SPI communication will need to be further configured. To configure it go to the .ioc file, find SPI1 in the Connectivity menu on the left:
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The data size is the length of each message in bits, to make communication easier, set this to 8 bits.In the ADC datasheet there is information on controlling the ADC from the microcontroller in Sections Then, configure the parameters:
Data Size
First Bit
Clock Polarity
Clock Phase
To do so, do the following:
Understand what each parameter does/means
Look in the ADC datasheet under sections 5.0 and 6.1
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Specifically check the following configuration parameters:
Clock polarity
If the ADC sends Most or Least significant bit first (MSB/LSB)
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to learn how the ADC communicates
Draw conclusions and set appropriate values
Also, it is good to note that the MCU can run much faster than the ADC , so adding a prescaler and outpace it. Add a Prescaler of 16 or greater in the configuration of SPI1 will reduce the speed it needs to operate atto keep the baud rate reasonable for the ADC.
The Hal library automatically generates the base code required to run the configuration you set when you save the .ioc file. You do want the IDE to generate code for you.
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Only 10 of the bits read from the ADC contain useful data (LSB/MSB determines which bits), the rest will need to be ignored.
The ADC digital value will range from the maximum to minimum value 10 bits can hold.
(What is the largest number that 10 bits can hold?)
The timer will need to be started only once in the program.
Remember that the duty cycle must range from 5-10% of the total period or 1-2ms of on time and the ADC value will need to be converted to counts.
Additional Resource:
Best Practices
For the Firmware team we follow a naming and code style guide to make our code more uniform and readable
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