/**
* Configures the baud rate of the given serial port. The base clock rate is 115200 bps
*
* @param com: The serial port to configure
* @param divisor: the divisor.
*/
void serial_configure_baud_rate(unsigned short com, unsigned char divisor)
{
outb(SERIAL_IRQ_COMMAND_PORT(com), 0); // Disable all interrupts
outb(SERIAL_LINE_COMMAND_PORT(com), SERIAL_LINE_ENABLE_DLAB);
outb(SERIAL_BAUD_RATE_LOW_PORT(com), divisor);
outb(SERIAL_BAUD_RATE_HIGH_PORT(com), 0);
}
void serial_configure_baud_rate(unsigned short com, unsigned short divisor){
outb(SERIAL_LINE_COMMAND_PORT(com), SERIAL_LINE_ENABLE_DLAB); //saying take high byte first
outb(SERIAL_DATA_PORT(com), (divisor >> 8) & 0x00FF);//so you force the top 8 bits first
outb(SERIAL_DATA_PORT(com), divisor & 0x00FF);//then the low 8 bits
}
void serial_configure_line(unsigned short com){
/*Bit: |7 |6 |5 4 3 | 2 | 1 0 |
* |d |b | prty | s | d1 |
* |0 |0 |0 0 0 | 0 | 1 1 | = 0x03
*/
outb(SERIAL_LINE_COMMAND_PORT(com), 0x03);
}
void serial_configure_baud_rate(unsigned short com, unsigned short divisor)
{
outb(SERIAL_LINE_COMMAND_PORT(com),
SERIAL_LINE_ENABLE_DLAB);
outb(SERIAL_DATA_PORT(com),
(divisor >> 8) & 0x00FF);
outb(SERIAL_DATA_PORT(com),
divisor & 0x00FF);
}
/** serial_configure_line
*
* Configures the line of the given serial port. The port is set to have a
* data lenght of 8 bits, no parity bits, one stop bits and break control
* disabled.
*/
void serial_configure_line(unsigned short com, unsigned char config)
{
outb(SERIAL_LINE_COMMAND_PORT(com), config);
}
void serial_configure_bit_rate(uint16_t com, uint16_t divisor){
outb(SERIAL_LINE_COMMAND_PORT(com), SERIAL_LINE_ENABLE_DLAB);
outb(SERIAL_DATA_PORT(com), (divisor >> 8) & 0x00FF);
outb(SERIAL_DATA_PORT(com), divisor & 0x00FF);
}
void serial_configure_line(uint16_t com){
outb(SERIAL_LINE_COMMAND_PORT(com), 0x03);
}
