53 lines
1.9 KiB
Python
Executable File
53 lines
1.9 KiB
Python
Executable File
###########################################
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# Project: CMSIS DSP Library
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# Title: CFFTF.py
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# Description: Node for CMSIS-DSP cfft
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#
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# $Date: 30 July 2021
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# $Revision: V1.10.0
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#
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# Target Processor: Cortex-M and Cortex-A cores
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# -------------------------------------------------------------------- */
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#
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# Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed under the Apache License, Version 2.0 (the License); you may
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# not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an AS IS BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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############################################
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from .simu import *
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import cmsisdsp as dsp
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# The CMSIS-DSP CFFT
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class CFFT(GenericNode):
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def __init__(self,inputSize,outSize,fifoin,fifoout):
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GenericNode.__init__(self,inputSize,outSize,fifoin,fifoout)
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if fifoin.type == np.dtype(np.float32):
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self._cfft=dsp.arm_cfft_instance_f32()
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status=dsp.arm_cfft_init_f32(self._cfft,inputSize>>1)
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if fifoin.type == np.dtype(np.int16):
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self._cfft=dsp.arm_cfft_instance_q15()
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status=dsp.arm_cfft_init_q15(self._cfft,inputSize>>1)
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def run(self):
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a=self.getReadBuffer()
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b=self.getWriteBuffer()
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# Copy arrays (not just assign references)
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b[:]=a[:]
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if self._src.type == np.dtype(np.float32):
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dsp.arm_cfft_f32(self._cfft,b,0,1)
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if self._src.type == np.dtype(np.int16):
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dsp.arm_cfft_q15(self._cfft,b,0,1)
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return(0) |