flexio3_i2s_interrupt_transfer#
Overview#
The flexio_i2s_interrupt example shows how to use flexio_i2s driver with interrupt:
In this example, flexio acts as I2S module to record data from codec line and playbacks the recorded data at the same time using interrupt.
Supported Boards#
MIMXRT1060-EVKB
Hardware requirements
Mini/micro USB cable
MIMXRT1060-EVKB board
Headphone(OMTP standard)
Personal Computer
Board settings
J34, headphone connected
connect FLEXIO pins to the pad close to J23 as follows:
Pin Name Board Location Pin Name Board Location
RX_DATA J16-1 RX_DATA J23-11
TX_DATA J16-2 TX_DATA J23-17
SYNC J33-4 SYNC J23-16
BCLK J33-3 BCLK J23-23
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
Note: This demo uses both headphone mic and board main mic(P1) as input source. The headphone mic provides left channel data, and main mic (P1) provides right channel data. If users found there is noise while do record operation, most probably it is the headphone standard issue (OMTP and CTIA standard difference). You should use the OMTP standard headphone. You can disable the left channel by using an headphone without microphone feature.
When the demo runs successfully, the log would be seen on the OpenSDA terminal like as below.
~~~~~~~~~~~~~~~~~~~~~
FLEXIO_I2S interrupt example started!
FLEXIO_I2S interrupt example finished!
~~~~~~~~~~~~~~~~~~~~~
Note:
This example's right/left channel data is swapped due to the buffer maintain issue. This issue will be fixed in later release.
MIMXRT1060-EVKC
Hardware requirements
Mini/micro USB cable
MIMXRT1060-EVKC board
Headphone(OMTP standard)
Personal Computer
Board settings
J101, headphone connected
connect FLEXIO pins as follows:
Pin Name Board Location Pin Name Board Location
RX_DATA J16-1 RX_DATA J99-2
TX_DATA J16-2 TX_DATA J100-2
SYNC J33-4 SYNC J97-2
BCLK J33-3 BCLK J98-2
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
Note: This demo uses both headphone mic and board main mic(P1) as input source. The headphone mic provides left channel data, and main mic (P1) provides right channel data. If users found there is noise while do record operation, most probably it is the headphone standard issue (OMTP and CTIA standard difference). You should use the OMTP standard headphone. You can disable the left channel by using an headphone without microphone feature.
When the demo runs successfully, the log would be seen on the OpenSDA terminal like as below.
~~~~~~~~~~~~~~~~~~~~~
FLEXIO_I2S interrupt example started!
FLEXIO_I2S interrupt example finished!
~~~~~~~~~~~~~~~~~~~~~
Note:
This example's right/left channel data is swapped due to the buffer maintain issue. This issue will be fixed in later release.
MIMXRT1040-EVK
Hardware requirements
Mini/micro USB cable
MIMXRT1040-EVK board
Headphone(OMTP standard)
Personal Computer
Board settings
J34, headphone connected
Uninstall jumper J35,J36,J37,J41 and connect FLEXIO pins to the pad close to U13 as follows:
Pin Name Board Location Pin Name Board Location
RX_DATA J33-3 RX_DATA U25-16 J41
TX_DATA J33-4 TX_DATA U25-14 J37
SYNC J33-5 SYNC U25-13 J36
BCLK J33-6 BCLK U25-12 J35
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
Note: This demo uses both headphone mic and board main mic(P1) as input source. The headphone mic provides left channel data, and main mic (P1) provides right channel data. If users found there is noise while do record operation, most probably it is the headphone standard issue (OMTP and CTIA standard difference). You should use the OMTP standard headphone. You can disable the left channel by using an headphone without microphone feature.
When the demo runs successfully, the log would be seen on the OpenSDA terminal like as below.
~~~~~~~~~~~~~~~~~~~~~
FLEXIO_I2S interrupt example started!
FLEXIO_I2S interrupt example finished!
~~~~~~~~~~~~~~~~~~~~~
Note:
This example's right/left channel data is swapped due to the buffer maintain issue. This issue will be fixed in later release.
EVK-MIMXRT1064
Hardware requirements
Mini/micro USB cable
EVK-MIMXRT1064 board
Headphone(OMTP standard)
Personal Computer
Board settings
J12, headphone connected
remove R98,R99,R100,R101 and connect FLEXIO pins to the pad close to U13 as follows:
Pin Name Board Location Pin Name Board Location
RX_DATA J22-1 RX_DATA U13-16
TX_DATA J22-2 TX_DATA U13-14
SYNC J23-4 SYNC U13-13
BCLK J23-3 BCLK U13-12
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
Note: This demo uses both headphone mic and board main mic(P1) as input source. The headphone mic provides left channel data, and main mic (P1) provides right channel data. If users found there is noise while do record operation, most probably it is the headphone standard issue (OMTP and CTIA standard difference). You should use the OMTP standard headphone. You can disable the left channel by using an headphone without microphone feature.
When the demo runs successfully, the log would be seen on the OpenSDA terminal like as below.
~~~~~~~~~~~~~~~~~~~~~
FLEXIO_I2S interrupt example started!
FLEXIO_I2S interrupt example finished!
~~~~~~~~~~~~~~~~~~~~~