cadc_pit_trigger_edma_conversion#
Overview#
The PIT TRIGGER EDMA conversion demo application demonstrates how to use PIT to trigger CADC conversion and configure xbara to connect PIT output with CADC input. CADC performs data conversion after each count period of PIT. The EDMA request will be set during any CADC conversion ready event recorded when the ADC_STAT[EOSI0] flag is set. EDMA will transfer CADC results into memory. Enter any key via terminal will start PIT to trigger CADC periodly, and then the average value(16 times) of thermistor will be printed on terminal.
Supported Boards#
MC56F80000-EVK
Hardware requirements
Micro USB cable
MC56F80000-EVK board
Personal Computer
Board hardware common setting
Power setting:
Connect J8 pin2 and pin3 Connect J6 pin1 and pin2 Connect J5 pin1 and pin2
Reset pin setting:
Connect J11 pin2 and pin3
Debugger setting:
Connect J13 pin 1-2, 3-4, 5-6, 7-8
Board settings
No special settings are required.
Note: The sample0 works in fully differential mode and the differential pair is selected as ANA6 and ANA7. And the thermistor in MC56F80000-EVK board is connected to ANA6 and ANA7.
Prepare the Demo
Connect USB cable between the host PC and the J12 USB port on the target board. It setups Multilink and COM port in PC device manager.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board with Multilink debug configuration.
Launch the debugger in your IDE to begin running the demo.
Running the demo
When the example runs successfully, wait 2 seconds for the ADC conversion result to refresh once. The terminal displays the following information:
CADC PIT trigger EDMA conversion.
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
The ADC input channel is connected with thermistor,so touching thermistor on board will get the ADC value updated.
MC56F81000-EVK
Hardware requirements
2 x Micro USB cable
MC56F81000-EVK board
Personal Computer
Board hardware common setting
Power setting:
Connect J8 pin2 and pin3 Connect J5 pin1 and pin2 Connect J6 pin1 and pin2
Onboard PnE U-MultiLink debugger setting:
Connet J11 pin2 and pin3 Connect J13 pin 1-2, 3-4, 5-6, 7-8, to setup onboard debugger PnE U-MultiLink. Note: when use external debugger(connected to J10), leave all J13 pins open.
Board settings
No special settings are required.
Note: The sample0 works in fully differential mode and the differential pair is selected as ANA6 and ANA7. And the thermistor in MC56F81000-EVK board is connected to ANA6 and ANA7.
Prepare the Demo
Connect USB cable between the host PC and the USB(J26) port on the target board to setup USB to UART bridge.
Connect USB cable between the host PC and the USB(J12) port on the target baord to setup mulitlink debugger.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board with PnE U-MultiLink debug configuration.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo. Please be noted default FCF(flash configuration field) makes the MCU boot from flash.
Running the demo
When the example runs successfully, wait 2 seconds for the ADC conversion result to refresh once. The terminal displays the following information:
CADC PIT trigger EDMA conversion.
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
The ADC input channel is connected with thermistor,so touching thermistor on board will get the ADC value updated.
MC56F83000-EVK
Hardware requirements
Micro USB cable
MC56F83000-EVK board
Personal Computer
Board hardware common setting
Power setting:
Connect J19 pin2 and pin3 Connect J12 pin1 and pin2 Connect J13 pin1 and pin2 Connect J15 pin1 and pin2 Connect J16 pin2 and pin3 Connect J17 pin1 and pin2
Onboard OSJTAG debugger setting:
Leave J5 open Leave J6 open Note: J6 is only used(connected) when firmware update for onboard debugger OSJTAG. Connect J11 pin 1-2, 3-4, 5-6, 7-8, to setup onboard debugger OSJTAG. Note: when use external debugger(connected to J10), leave all J11 pins open.
Board settings
No special settings are required.
Note: The sample0 works in fully differential mode and the differential pair is selected as ANA6 and ANA7. And the thermistor in MC56F83000-EVK board is connected to ANA6 and ANA7.
Prepare the Demo
Connect USB cable between the host PC and the JM60 USB(J8) port on the target board. It setups OSJTAG and COM port in PC device manager.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board with OSJTAG debug configuration.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo. Please be noted that default FCF(flash configuration field) setting makes MCU boot from bootloader. So after reset button press, it will wait 5s(wait in bootloader) to run the application code.
Running the demo
When the example runs successfully, wait 2 seconds for the ADC conversion result to refresh once. The terminal displays the following information:
CADC PIT trigger EDMA conversion.
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
ADC value: 3122
The ADC input channel is connected with thermistor,so touching thermistor on board will get the ADC value updated.