Hardware requirements
Micro USB cable
Two LPCXpresso54S018 boards
Personal Computer
Board settings
SPI one board: Connect SPI master on board to SPI slave on other board
Master_board(SPI9) Slave_board(SPI9)
Pin Name Board Location Pin Name Board Location
MISO J9 pin 11 MISO J9 pin 11
MOSI J9 pin 13 MOSI J9 pin 13
SCK J9 pin 9 SCK J9 pin 9
PCS0 J9 pin 15 PCS0 J9 pin 15
GND J14 pin 5 GND J14 pin 5
Prepare the Demo
===============
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 LPC54S018.
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:
This is slave example for SPI half-duplex interrupt transfer.
Slave is working….
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
Slave transfer completed.