Hardware requirements
Micro USB cable
LPCXpresso54S018M board
Personal Computer
Board settings
SPI one board: Transfer data from SPI slave interface on board to other SPI interface on other board
INSTANCE0(SPI9)
Pin Name Board Location
MISO J9 pin 11
MOSI J9 pin 13
SCK J9 pin 9
PCS0 J9 pin 15
Prepare the Demo
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1. Connect a micro USB cable between the PC host and the LPC-Link USB port (J8) on the 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
===============
This demo is an external flash plain load demo, ROM will copy image in external flash to SRAMX to run:
1. Build the demo to generate a bin file.
Note: If need to generate bin file using MCUXpresso IDE, below steps need to be followed:
Set in example Properties->C/C++ Build->Settings->Build steps->Post-build steps->Edit
enbable arm-none-eabi-objcopy -v -O binary "&{BuildArtifactFileName}" "&{BuildArtifactFileBaseName}.bin"
This plainload example linked the vector table to 0x00000000, but program to external flash 0x10000000.
2. Program the bin file to external on board flash via SEGGER J-FLASH Lite(V6.22 or higher):
a. Open SEGGER J-FLASH Lite, select device LPC54S018M.
b. Click the 'Erase Chip' to erase the extrenal flash.(if can not success, press SW4 button and reset the board, and try to erase again)
c. Select the bin data file, set the '.bin/Erase Start' address to 0x10000000, then click 'Program Device'
Note: Please use above way to program the binary file built by armgcc tool chain to external flash.
For IAR, KEIL, MCUXpresso IDE, you can use the IDE tool to program the external flash.
When the demo runs successfully, the log would be seen on the terminal like:
SPI board to board interrupt slave example started!
SPI transfer finished!