// Enable interrupts outb(io_base + IER, 0x01); // IER = 0x01 (RDA interrupt enable)
The 16C95X serial port driver! That's a bit of a niche topic, but I'll provide some solid content for you.
// Define the serial port's I/O address #define SERIAL_PORT 0x3F8
// Initialize the serial port static int __init serial_init(void) { // Map the serial port's I/O address io_base = ioremap(SERIAL_PORT, 0x10); if (!io_base) { return -ENOMEM; }
Here's a simple example of a 16C95X serial port driver in C, which demonstrates how to initialize the serial port and transmit data:
#include <linux/module.h> #include <linux/io.h>