Yilin Sun
763d32be90
Signed-off-by: Yilin Sun <imi415@imi.moe> |
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.. | ||
armgcc | ||
board.c | ||
board.h | ||
clock_config.c | ||
clock_config.h | ||
dcd.c | ||
dcd.h | ||
evkmimxrt1020_sdram_init.jlinkscript | ||
lpspi_loopback.bin | ||
lpspi_loopback.c | ||
lpspi_loopback.mex | ||
lpspi_loopback_v3_14.xml | ||
pin_mux.c | ||
pin_mux.h | ||
readme.md |
readme.md
Overview
The lpspi_loopback demo shows how the lpspi do a loopback transfer, LPSPI master will transmit data to itself, so please connect the SOUT pin to SIN pin directly.
SDK version
- Version: 2.15.000
Toolchain supported
- GCC ARM Embedded 12.2
- IAR embedded Workbench 9.40.1
- Keil MDK 5.38.1
- MCUXpresso 11.8.0
Hardware requirements
- Mini/micro USB cable
- EVK-MIMXRT1020 board
- Personal Computer
Board settings
The lpspi_loopback demo shows how the lpspi do a loopback transfer, LPSPImaster will transmit data to itself, so please connect the SOUT pin to SIN pin directly.
To make the example work, connections needed to be as follows:
Pin Name Board Location Pin Name Board Location
SOUT J19-4 connect to SIN J19-5
Prepare the Demo
- Connect a mini USB cable between the PC host and the OpenSDA USB port on the board.
- Open a serial terminal on PC for OpenSDA serial device with these settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
- Download the program to the target board.
- Reset the SoC and run the project.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
***LPSPI Loopback Demo***
LPSPI loopback test pass!!!
Note: To debug in qspiflash, following steps are needed:
- Select the flash target and compile.
- Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J23.
- Start debugging in IDE.
- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.