spi_transfer_dma_master#
Overview#
The spi_dma_transfer_master example shows how to use driver API to transfer in DMA way.
In this example, one spi instance as master and another spi instance on the other board as slave. Master sends a piece of data to slave, and receive a piece of data from slave. This example checks if the data received from slave is correct. This example needs to work with spi_dma_transfer_slave example.
Supported Boards#
LPC845BREAKOUT
Hardware requirements
Micro USB cable
Two LPC845 Breakout boards
Personal Computer
Board settings
Pin connecting:
Connect SPI master on board to SPI slave on other board
Master - SPI0 Slave - SPI0
Pin Name Board Location Pin Name Board Location
MISO CN1 pin 12 (PIO0_26) MISO CN1 pin 12 (PIO0_26)
MOSI CN1 pin 13 (PIO0_27) MOSI CN1 pin 13 (PIO0_27)
SCK CN1 pin 6 (PIO0_21) SCK CN1 pin 6 (PIO0_21)
SSEL0 CN1 pin 5 (PIO0_20) SSEL0 CN1 pin 5 (PIO0_20)
GND CN1 pin 20 GND CN1 pin 20
Prepare the demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output of the SPI transfer using DMA master driver example in the terminal window:
This is SPI dma transfer master example!
To make sure the transfer work successffully, please start the slave board first!
The received data are:
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F
0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F
0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F
Master DMA transfer succeed!
LPCXpresso824MAX
Hardware requirements
Mini/micro USB cable
Two LPCXpresso824MAX boards
Personal Computer
Board settings
Run with: system_clk = 30 MHz. SPI0CLK = 30 MHz.
Pin connecting:
Connect SPI master on board to SPI slave on other board
Master - SPI0 Slave - SPI0
Pin Name Board Location Pin Name Board Location
MISO J1 pin 6 MISO J1 pin 6
MOSI J1 pin 7 MOSI J1 pin 7
SCK J1 pin 5 SCK J1 pin 5
SSEL0 J1 pin 8 SSEL0 J1 pin 8
GND J1 pin 4 GND J1 pin 4
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output of the hello world demo in the terminal window:
This is SPI dma transfer master example!
To make sure the transfer work successffully, please start the slave board first!
The received data are:
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F
0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F
0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F
Master DMA transfer succeed!
LPCXpresso845MAX
Hardware requirements
Mini/micro USB cable
Two LPCXpresso845MAX boards
Personal Computer
Board settings
Run with: system_clk = 30 MHz. SPI0CLK = 30 MHz.
Pin connecting:
Connect SPI master on board to SPI slave on other board
Master - SPI0 Slave - SPI0
Pin Name Board Location Pin Name Board Location
MISO J2 pin 6 MISO J2 pin 6
MOSI J2 pin 7 MOSI J2 pin 7
SCK J2 pin 5 SCK J2 pin 5
SSEL0 J2 pin 8 SSEL0 J2 pin 8
GND J1 pin 4 GND J1 pin 4
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output of the hello world demo in the terminal window:
This is SPI dma transfer master example!
To make sure the transfer work successffully, please start the slave board first!
The received data are:
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F
0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F
0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F
Master DMA transfer succeed!
LPCXpresso860MAX
Hardware requirements
Micro USB cable
Two LPCXpresso860MAX boards
Personal Computer
Board settings
Pin connecting:
Connect SPI master on board to SPI slave on other board
Master - SPI0 Slave - SPI0
Pin Name Board Location Pin Name Board Location
MISO J1 pin 10 MISO J1 pin 10
MOSI J1 pin 8 MOSI J1 pin 8
SCK J1 pin 12 SCK J1 pin 12
SSEL0 J1 pin 6 SSEL0 J1 pin 6
GND J1 pin 14 GND J1 pin 14
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output of the hello world demo in the terminal window:
This is SPI dma transfer master example!
To make sure the transfer work successfully, please start the slave board first!
The received data are:
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
0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F
0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F
Master DMA transfer succeed!