ecspi_polling_b2b_transfer_slave#
Overview#
The ecspi_polling_b2b_transfer example shows how to use ECSPI driver in polling way:
In this example , we need two boards, one board used as ECSPI master and another board used as ECSPI slave. The file ‘ecspi_polling_b2b_transfer_slave.c’ includes the ECSPI slave code.
ECSPI master send/received data to/from ECSPI slave in polling . (ECSPI Slave using interrupt to receive/send the data)
Supported Boards#
EVK-MIMX8MM
Hardware requirements
Micro USB cable
MIMX8MM6-EVK board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
ECSPI board to board: Transfers data through the instance 2 of the ECSPI interface. ECSPI2 pins of the master board are connected to the ECSPI2 pins of the slave board.
MASTER BOARD CONNECTS TO SLAVE BOARD
Pin Name Board Location Pin Name Board Location
MISO J1003 - 21 MISO J1003 - 21
MOSI J1003 - 19 MOSI J1003 - 19
SCK J1003 - 23 SCK J1003 - 23
SS0 J1003 - 24 SS0 J1003 - 24
GND J1003 - 6 GND J1003 - 6
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:
ECSPI board to board polling example.
Slave example is running...
Slave starts to receive data!
This is ECSPI slave transfer completed callback.
It's a successful transfer.
Slave starts to transmit data!
This is ECSPI slave transfer completed callback.
It's a successful transfer.
Slave receive:
1 2 3 4 5 6 7 8 9 A B C D E F 10
11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30
31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
Slave example is running...
EVK-MIMX8MN
Hardware requirements
Micro USB cable
MIMX8MN6-EVK board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
ECSPI board to board: Transfers data through the instance 2 of the ECSPI interface. ECSPI2 pins of the master board are connected to the ECSPI2 pins of the slave board.
MASTER BOARD CONNECTS TO SLAVE BOARD
Pin Name Board Location Pin Name Board Location
MISO J1003 - 21 MISO J1003 - 21
MOSI J1003 - 19 MOSI J1003 - 19
SCK J1003 - 23 SCK J1003 - 23
SS0 J1003 - 24 SS0 J1003 - 24
GND J1003 - 6 GND J1003 - 6
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:
ECSPI board to board polling example.
Slave example is running...
Slave starts to receive data!
This is ECSPI slave transfer completed callback.
It's a successful transfer.
Slave starts to transmit data!
This is ECSPI slave transfer completed callback.
It's a successful transfer.
Slave receive:
1 2 3 4 5 6 7 8 9 A B C D E F 10
11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30
31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
Slave example is running...
EVK-MIMX8MNDDR3L
Hardware requirements
Micro USB cable
MIMX8MN6-EVK board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
ECSPI board to board: Transfers data through the instance 2 of the ECSPI interface. ECSPI2 pins of the master board are connected to the ECSPI2 pins of the slave board.
MASTER BOARD CONNECTS TO SLAVE BOARD
Pin Name Board Location Pin Name Board Location
MISO J1003 - 21 MISO J1003 - 21
MOSI J1003 - 19 MOSI J1003 - 19
SCK J1003 - 23 SCK J1003 - 23
SS0 J1003 - 24 SS0 J1003 - 24
GND J1003 - 6 GND J1003 - 6
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:
ECSPI board to board polling example.
Slave example is running...
Slave starts to receive data!
This is ECSPI slave transfer completed callback.
It's a successful transfer.
Slave starts to transmit data!
This is ECSPI slave transfer completed callback.
It's a successful transfer.
Slave receive:
1 2 3 4 5 6 7 8 9 A B C D E F 10
11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30
31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
Slave example is running...
EVK-MIMX8MP
Hardware requirements
Micro USB cable
EVK-MIMX8M Plus board
J-Link Debug Probe
12V power supply
Personal Computer
Board settings
ECSPI board to board: Transfers data through the instance 2 of the ECSPI interface. ECSPI2 pins of the master board are connected to the ECSPI2 pins of the slave board.
MASTER BOARD CONNECTS TO SLAVE BOARD
Pin Name Board Location Pin Name Board Location
MISO J21 - 21 MISO J21 - 21
MOSI J21 - 19 MOSI J21 - 19
SCK J21 - 23 SCK J21 - 23
SS0 J21 - 24 SS0 J21 - 24
GND J21 - 6 GND J21 - 6
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:
ECSPI board to board interrupt example.
This example use one board as master and another as slave.
Master and slave uses interrupt way. Slave should start first.
Please make sure you make the correct line connection. Basically, the connection is:
ECSPI_master -- ECSPI_slave
CLK -- CLK
PCS -- PCS
MOSI -- MOSI
MISO -- MISO
GND -- GND
Master transmit:
1 2 3 4 5 6 7 8 9 A B C D E F 10
11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30
31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
ECSPI transfer all data matched!
Master received:
1 2 3 4 5 6 7 8 9 A B C D E F 10
11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30
31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40
Press any key to run again