iuart_idle_detect_sdma_transfer#
Overview#
The uart_idle_detect_sdma example shows how to use uart driver in sdma way:
In this example, one uart instance connect to PC through uart, the board will send back all characters that PC send to the board.
Uart will receive 8 characters every time, but if the character is less then 8, the idle line interrupt will generate, and abort the SDMA receive operation, and send out the received characters.
Supported Boards#
EVK-MIMX8MM
Hardware requirements
Micro USB cable
MIMX8MM6-EVK board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect 12V power supply and J-Link Debug Probe to the board, switch SW101 to power on the board
Connect a USB cable between the host PC and the J901 USB port on the target board.
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.
Launch the debugger in your IDE to begin running the demo.
Running the demo
When the demo runs successfully, the log would be seen on the debug terminal like:
Uart sdma transfer example!
Uart will receive 8 charactes every time, if less characters were received,
Uart will generate the idle line detect interrupt, SDMA receive operation will be aborted.
Board will send the received characters out.
Now please input:
EVK-MIMX8MN
Hardware requirements
Micro USB cable
MIMX8MN6-EVK board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
No special settings are required.
Please note this application can’t support booting by uboot! and accordingly it does not support Flash target! This example aims to show the basic usage of the IP’s function, some of the used Resources are assigned to Cortex-A core by uboot. To run the example, boot the A core into U-Boot and run the following command in the U-Boot console before starting the example to re-assign the resource.
u-boot=> mw.b 0x303d022c 1 1
Prepare the Demo
Connect 12V power supply and J-Link Debug Probe to the board, switch SW101 to power on the board
Connect a USB cable between the host PC and the J901 USB port on the target board.
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.
Launch the debugger in your IDE to begin running the demo.
Running the demo
When the demo runs successfully, the log would be seen on the debug terminal like:
Uart sdma transfer example!
Uart will receive 8 charactes every time, if less characters were received,
Uart will generate the idle line detect interrupt, SDMA receive operation will be aborted.
Board will send the received characters out.
Now please input:
EVK-MIMX8MNDDR3L
Hardware requirements
Micro USB cable
MIMX8MN6-EVK board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
No special settings are required.
Please note this application can’t support booting by uboot! and accordingly it does not support Flash target! This example aims to show the basic usage of the IP’s function, some of the used Resources are assigned to Cortex-A core by uboot. To run the example, boot the A core into U-Boot and run the following command in the U-Boot console before starting the example to re-assign the resource.
u-boot=> mw.b 0x303d022c 1 1
Prepare the Demo
Connect 12V power supply and J-Link Debug Probe to the board, switch SW101 to power on the board
Connect a USB cable between the host PC and the J901 USB port on the target board.
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.
Launch the debugger in your IDE to begin running the demo.
Running the demo
When the demo runs successfully, the log would be seen on the debug terminal like:
Uart sdma transfer example!
Uart will receive 8 charactes every time, if less characters were received,
Uart will generate the idle line detect interrupt, SDMA receive operation will be aborted.
Board will send the received characters out.
Now please input:
EVK-MIMX8MP
Hardware requirements
Micro USB cable
EVK-MIMX8M Plus board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
No special settings are required.
Please note this application can’t support booting by uboot! and accordingly it does not support Flash target! This example aims to show the basic usage of the IP’s function, some of the used Resources are assigned to Cortex-A core by uboot.
Prepare the Demo
Connect 12V power supply and J-Link Debug Probe to the board, switch SW3 to power on the board
Connect a USB cable between the host PC and the J23 USB port on the target board.
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.
Launch the debugger in your IDE to begin running the demo.
Running the demo
When the demo runs successfully, the log would be seen on the debug terminal like:
Uart sdma transfer example!
Uart will receive 8 charactes every time, if less characters were received,
Uart will generate the idle line detect interrupt, SDMA receive operation will be aborted.
Board will send the received characters out.
Now please input: