i3c_dma_b2b_transfer_master#
Overview#
The example shows how to use i3c driver as master to do board to board transfer using dma method.
In this example, one i3c instance as master and another i3c instance on the other board as slave. Master first sends a piece of data to slave in I2C mode, and receive a piece of data from slave and check if the data received from slave is correct. Then master will enter dynamic address cycle to assign address to the connected slave, after success, will use I3C SDR mode to transfer data, then receive data from the connected I3C slave and check the data consistency.
Supported Boards#
LPCXpresso55S36
Hardware requirements
Micro USB cable
LPCXpresso55S36 board
Personal Computer
Board settings
I3C one board:
Transfer data from MASTER_BOARD to SLAVE_BOARD of I3C interface, I3C0 pins of MASTER_BOARD are connected with I3C0 pins of SLAVE_BOARD
MASTER_BOARD CONNECTS TO SLAVE_BOARD
Pin Name Board Location Pin Name Board Location
P0_9 J9-20 P0_9 J9-20
P0_24 J9-18 P0_24 J9-18
GND J9-14 GND J9-14
Connect the jumper resistor R554 2-3.
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J1) 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.
Press reset button to begin running the demo.
Running the demo
The following message shows in the terminal if the example runs successfully.
I3C board2board DMA example -- Master transfer.
Master will send data :
0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7
0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17
0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f
I3C master do dynamic address assignment to the I3C slaves on bus.
I3C master dynamic address assignment done.
Start to do I3C master transfer in I3C SDR mode.
I3C master wait for slave IBI event to notify the slave transmit size.
I3C master received slave IBI event, 1 byte(s), value 0x20.
I3C master transfer successful in I3C SDR mode.
Start to do I3C master transfer in I3C HDR mode.
Receive sent data from slave :
0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7
0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17
0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f
I3C master transfer successful in I3C HDR mode.
LPCXpresso860MAX
Hardware requirements
Micro USB cable
LPCXpresso860max board
Personal Computer
Notice: Due to there’s DMA Tx issue in current LPC860, workaround is needed in the application. Also a preprocessor macro I3C_DMA_IGNORE_FIFO_ERROR is added in the application to ignore the FIFO error status during transfer. Please remember to add the preprocessor macro I3C_DMA_IGNORE_FIFO_ERROR to your application if you use the I3C DMA Tx transfer API.
Board settings
I3C one board:
Transfer data from MASTER_BOARD to SLAVE_BOARD of I3C interface, I3C0 pins of MASTER_BOARD are connected with I3C0 pins of SLAVE_BOARD
MASTER_BOARD CONNECTS TO SLAVE_BOARD
Pin Name Board Location Pin Name Board Location
P0_26 J1-2 P0_26 J1-2
P1_14 J1-4 P1_14 J1-4
GND J1-14 GND J1-14
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J4) on the board
Open a serial terminal with the following settings:
9600 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Press reset button to begin running the demo.
Running the demo
The following message shows in the terminal if the example runs successfully.
I3C board2board DMA example -- Master transfer.
Master will send data :
0x 0 0x 1 0x 2 0x 3 0x 4 0x 5 0x 6 0x 7
0x 8 0x 9 0x a 0x b 0x c 0x d 0x e 0x f
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17
0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x1e 0x1f
I3C master do dynamic address assignment to the I3C slaves on bus.
I3C master dynamic address assignment done.
Start to do I3C master transfer in I3C SDR mode.
I3C master wait for slave IBI event to notify the slave transmit size.
I3C master received slave IBI event, 1 byte(s), value 0x20.
I3C master transfer successful in I3C SDR mode.