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- # Include definitions from the Python package to
- # define datatype for the IOs and to have access to the
- # Graph class
- from cmsisdsp.cg.scheduler import *
- # Include definition of the nodes
- from nodes import *
- # Define the datatype we are using for all the IOs in this
- # example
- floatType=CType(F32)
- # Instantiate a Source node with a float datatype and
- # working with packet of 5 samples (each execution of the
- # source in the C code will generate 5 samples)
- # "source" is the name of the C variable that will identify
- # this node
- src=Source("source",floatType,5)
- # Instantiate a Processing node using a float data type for
- # both the input and output. The number of samples consumed
- # on the input and produced on the output is 7 each time
- # the node is executed in the C code
- # "processing" is the name of the C variable that will identify
- # this node
- processing=Binary("arm_offset_f32",floatType,7)
- offsetValue=Constant("OFFSET_VALUE")
- # Instantiate a Sink node with a float datatype and consuming
- # 5 samples each time the node is executed in the C code
- # "sink" is the name of the C variable that will identify
- # this node
- sink=Sink("sink",floatType,5)
- # Create a Graph object
- the_graph = Graph()
- # Connect the source to the processing node
- the_graph.connect(src.o,processing.ia)
- the_graph.connect(offsetValue,processing.ib)
- # Connect the processing node to the sink
- the_graph.connect(processing.o,sink.i)
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