Development environment Ubuntu10.10 Kernel source code version linux2.6.32.2 Cross-compiler environment version V4.4.3 Drive function: The code will S3C2440 SPI port SC16IS752 extended to 2 serial ports. The code is divided into two parts, respectively Make generate two Ko file, load can be used. The code project practical, can be found.

SPI转串口2\app.c
..........\app.out
..........\Makefile
..........\sc16is752_addr.h
..........\sc16is752_operations.h
..........\sc16is752_ops.c
..........\spi232.ko
..........\spi2rs232.c
.........1\Makefile
..........\sc16is752_addr.h
..........\sc16is752_operations.h
..........\sc16is752_ops.c
..........\spi2rs485.c
..........\spi485.ko
SPI转串口2
SPI转串口1

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