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Set baud rate to 115200

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Alex 2023-02-25 07:23:25 +02:00
parent ca5745aa6d
commit 5427e7f2ca
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 13 additions and 7 deletions
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20
Core/UniversalAsynchronousReceiverTransmitter.cpp
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@ -27,10 +27,16 @@ __no_instrument_function void NoProfiler_outportb(uint16_t Port, uint8_t Data)
namespace UniversalAsynchronousReceiverTransmitter namespace UniversalAsynchronousReceiverTransmitter
{ {
#define SERIAL_ENABLE_DLAB 0x80 #define SERIAL_ENABLE_DLAB 0x80
#define SERIAL_RATE_115200_LO 0x01
#define SERIAL_RATE_115200_HI 0x00
#define SERIAL_RATE_57600_LO 0x02
#define SERIAL_RATE_57600_HI 0x00
#define SERIAL_RATE_38400_LO 0x03 #define SERIAL_RATE_38400_LO 0x03
#define SERIAL_RATE_38400_HI 0x00 #define SERIAL_RATE_38400_HI 0x00
#define SERIAL_BUFFER_EMPTY 0x20 #define SERIAL_BUFFER_EMPTY 0x20
/* TODO: Serial Port implementation needs reword. https://wiki.osdev.org/Serial_Ports */
SafeFunction __no_instrument_function UART::UART(SerialPorts Port) SafeFunction __no_instrument_function UART::UART(SerialPorts Port)
{ {
#if defined(__amd64__) || defined(__i386__) #if defined(__amd64__) || defined(__i386__)
@ -74,13 +80,13 @@ namespace UniversalAsynchronousReceiverTransmitter
return; return;
// Initialize the serial port // Initialize the serial port
NoProfiler_outportb(Port + 1, 0x00); // Disable all interrupts NoProfiler_outportb(Port + 1, 0x00); // Disable all interrupts
NoProfiler_outportb(Port + 3, SERIAL_ENABLE_DLAB); // Enable DLAB (set baud rate divisor) NoProfiler_outportb(Port + 3, SERIAL_ENABLE_DLAB); // Enable DLAB (set baud rate divisor)
NoProfiler_outportb(Port + 0, SERIAL_RATE_38400_LO); // Set divisor to 3 (lo byte) 38400 baud NoProfiler_outportb(Port + 0, SERIAL_RATE_115200_LO); // Set divisor to 1 (lo byte) 115200 baud
NoProfiler_outportb(Port + 1, SERIAL_RATE_38400_HI); // (hi byte) NoProfiler_outportb(Port + 1, SERIAL_RATE_115200_HI); // (hi byte)
NoProfiler_outportb(Port + 3, 0x03); // 8 bits, no parity, one stop bit NoProfiler_outportb(Port + 3, 0x03); // 8 bits, no parity, one stop bit
NoProfiler_outportb(Port + 2, 0xC7); // Enable FIFO, clear them, with 14-byte threshold NoProfiler_outportb(Port + 2, 0xC7); // Enable FIFO, clear them, with 14-byte threshold
NoProfiler_outportb(Port + 4, 0x0B); // IRQs enabled, RTS/DSR set NoProfiler_outportb(Port + 4, 0x0B); // IRQs enabled, RTS/DSR set
// Check if the serial port is faulty. // Check if the serial port is faulty.
if (NoProfiler_inportb(Port + 0) != 0xAE) if (NoProfiler_inportb(Port + 0) != 0xAE)