87 lines
3.1 KiB
Plaintext
87 lines
3.1 KiB
Plaintext
Overview
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========
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CMSIS-Driver defines generic peripheral driver interfaces for middleware making it reusable across a wide
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range of supported microcontroller devices. The API connects microcontroller peripherals with middleware
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that implements for example communication stacks, file systems, or graphic user interfaces.
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More information and usage method please refer to http://www.keil.com/pack/doc/cmsis/Driver/html/index.html.
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The cmsis_spi_dma_b2b_transfer_master example shows how to use spi driver as master to do board to board transfer
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with DMA:
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In this example, one spi instance as master and another spi instance on the other board as slave. Master sends a
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piece of data to slave, and receive a piece of data from slave. This example checks if the data received from
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slave is correct.
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Toolchain supported
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===================
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- IAR embedded Workbench 9.20.2
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- Keil MDK 5.36
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- GCC ARM Embedded 10.3.1
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- MCUXpresso 11.5.0
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Hardware requirements
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=====================
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- Micro USB cable
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- Two LPCXpresso55s69 boards
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- Personal Computer
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Board settings
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==============
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Connect SPI master on board to SPI slave on other board
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Master_board(SPI7) Slave_board(SPI7)
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Pin Name Board Location Pin Name Board Location
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MISO P17 pin 12 MISO P17 pin 12
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MOSI P17 pin 10 MOSI P17 pin 10
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SCK P17 pin 14 SCK P17 pin 14
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SSEL1 P17 pin 1 SSEL1 P17 pin 1
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GND P17 pin 7 GND P17 pin 7
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Prepare the Demo
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================
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Note: MCUXpresso IDE project default debug console is semihost
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1. Connect a micro USB cable between the PC host and the LPC-Link USB port (P6) on the board.
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2. Open a serial terminal on PC for JLink serial device with these settings:
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- 115200 baud rate
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- 8 data bits
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- No parity
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- One stop bit
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- No flow control
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3. Download the program to the target board.
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4. Either press the reset button on your board or launch the debugger in your IDE to begin running
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the demo.
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Running the demo
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================
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The following message shows in the terminal if the example runs successfully.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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SPI CMSIS driver board to board dma example.
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This example use one board as master and another as slave.
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Master and slave uses DMA way. Slave should start first.
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Please make sure you make the correct line connection. Basically, the connection is:
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SPI_master -- SPI_slave
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CLK -- CLK
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PCS -- PCS
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MOSI -- MOSI
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MISO -- MISO
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GND -- GND
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Master transmit:
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0 1 2 3 4 5 6 7 8 9 A B C D E F
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10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
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20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F
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30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
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SPI transfer all data matched!
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Master received:
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0 1 2 3 4 5 6 7 8 9 A B C D E F
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10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
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20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F
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30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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