Hardware requirements
Type-C USB cable
Two FRDM-MCXC444 boards
Personal Computer
Board settings
SPI board to board: Transfers data through SPI interface. SPI0 pins of the master board are connected to the SPI1 pins of the slave board.
MASTER BOARD CONNECTS TO SLAVE BOARD
Pin Name Board Location Pin Name Board Location
MISO J1 pin 11 MISO J2 pin 10
MOSI J1 pin 9 MOSI J2 pin 8
SCK J1 pin 15 SCK J2 pin 12
PCS0 J1 pin 7 PCS0 J2 pin 6
GND J2 pin 14 GND J2 pin 14
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Prepare the Demo
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1. Connect a type-c USB cable between the host PC and the MCU-Link USB port (J13) on the target board.
2. Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
3. Download the program to the target board.
4. Reset the SoC and run the project.
Running the demo
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When the demo runs successfully, the log would be seen on the terminal like:
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SPI CMSIS DMA transfer example start.
This example use one spi instance as master and another as slave on one board.
Master use DMA way , slave uses interrupt.
Please make sure you make the correct line connection. Basically, the connection is:
SPI_master -- SPI_slave
CLK -- CLK
PCS -- PCS
MISO -- MISO
MOSI -- MOSI
Master transmit:
0 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
SPI transfer all data matched!
Master received:
0 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
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