Component: ADC ADS1256 (Analog Input): Difference between revisions

Latest revision as of 14:37, 13 July 2026

Author	Matrix TSL
Version	1.0
Category	Analog Input

ADC ADS1256 component

24-bit very low noise single ended or differential ADC compatible with ADS1255 or ADS1256. ADS1255 has two single ended or one differential input. ADC1256 has eight single ended or four differential inputs.

Version information

Library Version, Component Version, Date, Author, Info
7, 1.0, 25-10-24, BR, Minor change to try and address a problem
8, 1.0, 28-10-24, BR, Solved a problem where the sensor didn't init correctly

Detailed description

No detailed description exists yet for this component

Examples

No additional examples

Macro reference

Initialise

	Initialise
Sets up the SPI bus ready for communications with the sensor IC.
- VOID	Return

ReadData

	ReadData
Reads the result of an ADC conversion as a binary value in the range of 0 to 16,777,215
- LONG	Return

ReadDataAsVoltage

	ReadDataAsVoltage
Reads the result of an ADC conversion as a floating point voltage
- FLOAT	Return

ReadIO

	ReadIO
Reads from the general purpose IO pins
- BYTE	Mask
Range: 0 (0b0000) to 15 (0b1111)
- BYTE	Return

SetupADC

	SetupADC
Configures the positive and negative input channels
- BYTE	PositiveChannel
0=AIN0 - 7=AIN7, 8=AINCOM
- BYTE	NegativeChannel
0=AIN0 - 7=AIN7, 8=AINCOM
- BYTE	Gain
0=1X, 1=2X, 2=4X, 3=8X, 4=16X, 5=32X, 6=64X
- VOID	Return

WriteIO

	WriteIO
Writes to the general purpose IO pins
- BYTE	Mask
Range: 0 (0b0000) to 15 (0b1111)
- BYTE	Value
Range: 0 (0b0000) to 15 (0b1111)
- VOID	Return

Property reference

	Properties
	Type

	VREF Voltage
Voltage reference used in the calculations for ReadDataAsVoltage
	Data Rate
Specified the data rate in samples per second. Based on a clock rate of 7.68MHz and scales linearly with fCLKIN
	Connections
	Channel
SPI Channel selector
	Prescale
Prescale option selector
	MOSI
SPI Data Out Pin SDO - Also Known as Master Out Slave In (MOSI) when used in Master mode.
	MOSI Remap Pin
Select which the target pin to assign the MOSI hardware pin functionality.
	MISO
SPI Data In Pin SDI - Also Known as Master In Slave Out (MISO) when used in Master mode.
	MISO Remap Pin
Select which the target pin to assign the MISO hardware pin functionality.
	CLK
SPI Clock Pin CLK - The Clock signal is driven by the SPI master.
	CLK Remap Pin
Select which the target pin to assign the CLK hardware pin functionality.
	CS / SS
Chip Select / Slave Select Pin Master Mode: General purpose output pin used to select the remote SPI device. Slave Mode: Hardware chip select pin input used to select the SPI device.
	Data Ready

	Sync

	Simulation
	Simulate Comms

Component Source Code

Please click here to download the component source project: FC_Comp_Source_ExternalADC_ADS1256.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_ExternalADC_ADS1256.fcfx

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-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Initialise'''
+| width="90%" class="mtx-class-macrohead" | '''Initialise'''
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 | colspan="2" | Sets up the SPI bus ready for communications with the sensor IC.&nbsp;
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-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadData'''
+| width="90%" class="mtx-class-macrohead" | '''ReadData'''
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 | colspan="2" | Reads the result of an ADC conversion as a binary value in the range of 0 to 16,777,215&nbsp;
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-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadDataAsVoltage'''
+| width="90%" class="mtx-class-macrohead" | '''ReadDataAsVoltage'''
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 | colspan="2" | Reads the result of an ADC conversion as a floating point voltage&nbsp;
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-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ReadIO'''
+| width="90%" class="mtx-class-macrohead" | '''ReadIO'''
 |-
 | colspan="2" | Reads from the general purpose IO pins&nbsp;
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 | width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SetupADC'''
+| width="90%" class="mtx-class-macrohead" | '''SetupADC'''
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 | colspan="2" | Configures the positive and negative input channels&nbsp;
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-| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''WriteIO'''
+| width="90%" class="mtx-class-macrohead" | '''WriteIO'''
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 | colspan="2" | Writes to the general purpose IO pins&nbsp;
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 | colspan="2" | Specified the data rate in samples per second. Based on a clock rate of 7.68MHz and scales linearly with fCLKIN&nbsp;
 |-
-| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
+| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
-| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Connections
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-| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Simulation
+| width="90%" class="mtx-class-propfolder" | Simulation
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SteveT (talk | contribs)