def DMA_TCD(self, dma_channel):
            '''
            Parameters
            ----------
            dma_channel : int
                DMA channel for which to read the Transfer Control Descriptor.

            Returns
            -------
            pandas.DataFrame
                Table of Transfer Control Descriptor fields with corresponding
                values.

                In addition, several reference columns are included.  For
                example, the ``page`` column indicates the page in the
                [reference manual][1] where the respective register field is
                described.

            [1]: http://www.freescale.com/products/arm-processors/kinetis-cortex-m/adc-calculator:ADC_CALCULATOR
            '''
            from arduino_rpc.protobuf import resolve_field_values
            import arduino_helpers.hardware.teensy.dma as dma
            from .DMA import TCD

            tcd = TCD.FromString(self.read_dma_TCD(dma_channel).tostring())
            df_tcd = resolve_field_values(tcd)
            return (df_tcd[['full_name', 'value']].dropna()
                    .join(dma.TCD_DESCRIPTIONS, on='full_name')
                    [['full_name', 'value', 'short_description', 'page']]
                    .sort_values(['page','full_name']))
예제 #2
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    def config(self):
        import pandas as pd

        try:
            fv = resolve_field_values(self._config_pb,
                                      set_default=True).set_index(['full_name'])
            return pd.Series(OrderedDict([(k, PYTYPE_MAP[v.field_desc
                                                         .type](v.value))
                                          for k, v in fv.iterrows()]),
                             dtype=object)
        except ValueError:
            return pd.Series()
        def DMA_registers(self):
            '''
            Returns
            -------
            pandas.DataFrame
                Table of DMA configuration fields with corresponding values.

                In addition, several reference columns are included.  For
                example, the ``page`` column indicates the page in the
                [reference manual][1] where the respective register field is
                described.

            [1]: http://www.freescale.com/products/arm-processors/kinetis-cortex-m/adc-calculator:ADC_CALCULATOR
            '''
            from arduino_rpc.protobuf import resolve_field_values
            import arduino_helpers.hardware.teensy.dma as dma
            from .DMA import Registers

            dma_registers = (Registers
                             .FromString(self.read_dma_registers().tostring()))
            df_dma = resolve_field_values(dma_registers)
            return (df_dma.dropna(subset=['value'])
                    .join(dma.REGISTERS_DESCRIPTIONS, on='full_name')
                    [['full_name', 'value', 'short_description', 'page']])