sdio_freertos#
Overview#
The FREERTOS SDIO project is a demonstration program that uses the SDK software. It reads/writes the SDIO card reigister. The purpose of this example is to show how to use SDio driver with freertos.
Supported Boards#
EVKB-IMXRT1050
Hardware requirements
Micro USB cable
evkbimxrt1050 board
Personal Computer
SDIO card(such as wifi card, we use ATHEROS AR6233X to test)
Board settings
Insert the sdio card into card slot. Note that sdcard connector is for micro sd,but sdio connector is normal one, so you need a connector converter to connect.
Prepare the Demo
Connect a micro USB cable between the PC host and the LPC-Link USB port (J8) on the 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.
Reset the SoC and run the project.
Running the demo
When the demo runs successfully, the log would be seen on the terminal like:
SDIO freertos example.
Card inserted.
Read function CIS, in direct way
Read function CIS, in extended way, non-block mode, non-word aligned size
Read function CIS, in extended way, block mode, non-word aligned size
The read content is consistent.
Input 'q' to quit card access task.
Input other char to access again.
If sdio card interrupt is generated, then more log will be generated like:
SDIO interrupt is received
SDIO Pending interrupt 0
EVK-MIMXRT595
Hardware requirements
Micro USB cable
EVK-MIMXRT595 board
Personal Computer
SDIO card
Board settings
Make sure resistors R691~R697 are populated and resistors R611~R620,R660, R661 are removed.
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J40) on the 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.
Note: The Rev.B. EVK board can not perform Card power reset due to board limitation. Please insert the SDIO card into card slot(J32) after the debug console print “Please insert a card into board.”
Running the demo
When the demo runs successfully, the log would be seen on the terminal like:
SDIO freertos example.
Card inserted.
Card init finished, ready to access.
Read function CIS, in direct way
CIS read successfully
Please note that below log maybe printed according to the card capability.
Read function CIS, in extended way, non-block mode, non-word aligned size
Read function CIS, in extended way, block mode, non-word aligned size
The read content is consistent.
Input ‘q’ to quit card access task.
Input other char to access again.
If sdio card interrupt is generated, then more log will be generated like:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SDIO interrupt is received
IO 1 interrupt detected.
If sdio card is not inserted before example run, then more log will generated like:
SDIO freertos example.
Please insert a card into board.
EVK-MIMXRT685
Hardware requirements
Micro USB cable
EVK-MIMXRT685 board
Personal Computer
SDIO card
Board settings
Note: If the sdio card need WL_REG_ON, please connect WL_REG_ON to JS14.
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) on the 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. Please insert the SDIO card into card slot(J9)
Running the demo
When the demo runs successfully, the log would be seen on the terminal like:
SDIO freertos example.
Card inserted.
Card init finished, ready to access.
Read function CIS, in direct way
CIS read successfully
Please note that below log maybe printed according to the card capability.
Read function CIS, in extended way, non-block mode, non-word aligned size
Read function CIS, in extended way, block mode, non-word aligned size
The read content is consistent.
Input ‘q’ to quit card access task.
Input other char to access again.
If sdio card interrupt is generated, then more log will be generated like:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SDIO interrupt is received
IO 1 interrupt detected.
If sdio card is not inserted before example run, then more log will generated like:
SDIO freertos example.
Please insert a card into board.
MIMXRT685-AUD-EVK
Hardware requirements
Micro USB cable
MIMXRT685-AUD-EVK board
Personal Computer
SDIO card
Board settings
Note: If the sdio card need WL_REG_ON, please connect WL_REG_ON to JS14.
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) on the 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. Please insert the SDIO card into card slot(J9)
Running the demo
When the demo runs successfully, the log would be seen on the terminal like:
SDIO freertos example.
Card inserted.
Card init finished, ready to access.
Read function CIS, in direct way
CIS read successfully
Please note that below log maybe printed according to the card capability.
Read function CIS, in extended way, non-block mode, non-word aligned size
Read function CIS, in extended way, block mode, non-word aligned size
The read content is consistent.
Input ‘q’ to quit card access task.
Input other char to access again.
If sdio card interrupt is generated, then more log will be generated like:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SDIO interrupt is received
IO 1 interrupt detected.
If sdio card is not inserted before example run, then more log will generated like:
SDIO freertos example.
Please insert a card into board.
MIMXRT700-EVK
Hardware requirements
Micro USB cable
MIMXRT700-EVK board
Personal Computer
SDIO card
Board settings
JP65 1-2 connected.
Prepare the Demo
Connect a micro USB cable between the PC host and the MCU-LINK USB port on the 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.
Note: Please insert the SDIO card into card slot(J47) after the debug console print “Please insert a card into board.”
Running the demo
When the demo runs successfully, the log would be seen on the terminal like:
SDIO freertos example.
Card inserted.
Card init finished, ready to access.
Read function CIS, in direct way
CIS read successfully
Read function CIS, in extended way, non-block mode, non-word aligned size
Read function CIS, in extended way, block mode, non-word aligned size
The read content is consistent.
Input 'q' to quit card access task.
Input other char to access again