This application demonstrates the usage of the ADC API by monitoring the sample conversion of a selectable ADC channel.
The ConnectCore 6 SBC v3 platform has 3 available ADC channels located in the GPIO expansion connector as follows:
- Pin 1: PMIC_ADCIN1 / PMIC_GPIO0
- Pin 2: PMIC_ADCIN2 / PMIC_GPIO1
- Pin 3: PMIC_ADCIN3 / PMIC_GPIO2
The ConnectCore 8X SBC platform has several ADC-capable pins located in the expansion connector:
- Pin 5: MCA_IO6
- Pin 6: MCA_IO7
- Pin 7: MCA_IO8
- Pin 10: MCA_IO5
- Pin 11: MCA_IO14
- Pin 25: i.MX ADC channel 0
- Pin 26: i.MX ADC channel 4
- Pin 27: i.MX ADC channel 1
- Pin 28: i.MX ADC channel 5
The ConnectCore 8M Mini Development Kit has several ADC-capable pins located in the XBee Cellular socket J39-J40:
- MCA_IO1 (MCA ADC channel 1)
- MCA_IO2 (MCA ADC channel 2)
- MCA_IO3 (MCA ADC channel 3)
- MCA_IO4 (MCA ADC channel 4)
** NOTE: The MCA_IO lines need to be configure as ADC in order to be usable for this example. Note that not all MCA_IO lines are ADC-capable, but all the ones in the list above are ADC-capable.
** NOTE: The maximum voltage level of the analog input should not exceed the reference tension used by each ADC chip.
To run this example you need:
- A compatible development board to host the application.
- A USB connection between the board and the host PC in order to transfer and launch the application.
Make sure the hardware is set up correctly:
- The development board is powered on.
- The board is connected directly to the PC by the micro USB cable.
- The desired ADC channel is enabled.
The example is already configured, so all you need to do now is to build and launch the project.
While it is running, the application displays some boxes to select the ADC channel to monitor and the sampling period in milliseconds.
Once configured, click START SAMPLING to start the conversion. Both sample values and number of samples are shown by the application.
Click STOP SAMPLING to stop the receiving ADC samples.
- ConnectCore 6 SBC v3
- ConnectCore 8X SBC Pro
- ConnectCore 8M Mini Development Kit
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