added tty

tty/Makefile

@@ -0,0 +1,5 @@
+tty: tty.S
+	as -o tty.o tty.S
+	ld -o tty tty.o
+clean:
+	rm -f tty tty.o

tty/tty.S

@@ -0,0 +1,255 @@
+.intel_syntax noprefix
+
+# syscall numbers
+.equ SYS_READ,      0
+.equ SYS_WRITE,     1
+.equ SYS_OPEN,      2
+.equ SYS_CLOSE,     3
+.equ SYS_POLL,      7
+.equ SYS_IOCTL,     16
+.equ SYS_EXIT,      60
+
+# ioctl / termios
+.equ TCGETS,        0x5401
+.equ TCSETS,        0x5402
+.equ TERMIOS_SIZE,  60      # sizeof(struct termios) on x86_64
+
+# termios c_lflag bits to clear
+.equ ICANON,        0x2
+.equ ECHO,          0x8
+.equ ISIG,          0x1
+
+# termios c_iflag bits to clear
+.equ IGNBRK,        0x1
+.equ BRKINT,        0x2
+.equ PARMRK,        0x8
+.equ ISTRIP,        0x20
+.equ INLCR,         0x40
+.equ IGNCR,         0x80
+.equ ICRNL,         0x100
+.equ IXON,          0x400
+
+# termios c_oflag bits to clear
+.equ OPOST,         0x1
+
+# termios c_cflag
+.equ CSIZE,         0x30
+.equ PARENB,        0x100
+.equ CS8,           0x30
+.equ CLOCAL,        0x800
+.equ CREAD,         0x80
+
+# baud
+.equ B115200,       0x1002
+
+# open flags
+.equ O_RDWR,        0x2
+.equ O_NOCTTY,      0x100
+
+# poll
+.equ POLLIN,        0x1
+.equ POLLFD_SIZE,   8
+
+# termios field offsets
+.equ OFLAG_OFF,     4
+.equ CFLAG_OFF,     8
+.equ LFLAG_OFF,     12
+.equ CC_OFF,        17      # c_cc array offset
+.equ VMIN,          6       # c_cc index
+.equ VTIME,         5       # c_cc index
+.equ ISPEED_OFF,    52
+.equ OSPEED_OFF,    56
+
+.data
+devpath: .asciz "/dev/ttyUSB0"
+banner: .ascii "Holck's minitty - ctrl-d to exit!\r\n"
+.equ BANNER_LEN, . - banner
+
+.bss
+.align 8
+serial_fd:   .quad 0
+old_termios: .space TERMIOS_SIZE
+raw_termios: .space TERMIOS_SIZE
+ser_termios: .space TERMIOS_SIZE
+pollfds:     .space POLLFD_SIZE * 2     # two pollfd structs
+buf:         .space 256
+
+.text
+.globl _start
+
+_start:
+    # Open serial port
+    mov rdi, offset devpath
+    mov rsi, O_RDWR | O_NOCTTY
+    xor rdx, rdx
+    mov rax, SYS_OPEN
+    syscall
+    test rax, rax
+    js exit_fail
+    mov [serial_fd], rax
+
+    # Get serial termios & configure
+    mov rdi, rax
+    mov rsi, TCGETS
+    lea rdx, [ser_termios]
+    mov rax, SYS_IOCTL
+    syscall
+
+    # cfmakeraw equivalent for serial
+    lea rbx, [ser_termios]
+    # iflag: clear everything raw clears
+    and dword ptr [rbx], ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON)
+    # oflag: clear OPOST
+    and dword ptr [rbx + OFLAG_OFF], ~OPOST
+    # cflag: CS8, CLOCAL, CREAD, no parity
+    mov eax, [rbx + CFLAG_OFF]
+    and eax, ~(CSIZE | PARENB)
+    or  eax, CS8 | CLOCAL | CREAD
+    mov [rbx + CFLAG_OFF], eax
+    # lflag: clear ECHO, ICANON, ISIG
+    and dword ptr [rbx + LFLAG_OFF], ~(ECHO|ICANON|ISIG)
+    # VMIN=0, VTIME=1
+    mov byte ptr [rbx + CC_OFF + VMIN], 0
+    mov byte ptr [rbx + CC_OFF + VTIME], 1
+    # baud 115200
+    mov dword ptr [rbx + ISPEED_OFF], B115200
+    mov dword ptr [rbx + OSPEED_OFF], B115200
+
+    mov rdi, [serial_fd]
+    mov rsi, TCSETS
+    lea rdx, [ser_termios]
+    mov rax, SYS_IOCTL
+    syscall
+
+    # Save stdin termios
+    xor rdi, rdi
+    mov rsi, TCGETS
+    lea rdx, [old_termios]
+    mov rax, SYS_IOCTL
+    syscall
+
+    # Copy old to raw and make raw
+    lea rsi, [old_termios]
+    lea rdi, [raw_termios]
+    mov rcx, TERMIOS_SIZE
+    rep movsb
+
+    lea rbx, [raw_termios]
+    and dword ptr [rbx], ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON)
+    and dword ptr [rbx + OFLAG_OFF], ~OPOST
+    mov eax, [rbx + CFLAG_OFF]
+    and eax, ~(CSIZE | PARENB)
+    or  eax, CS8
+    mov [rbx + CFLAG_OFF], eax
+    and dword ptr [rbx + LFLAG_OFF], ~(ECHO|ICANON|ISIG)
+    mov byte ptr [rbx + CC_OFF + VMIN], 1
+    mov byte ptr [rbx + CC_OFF + VTIME], 0
+
+    # Set stdin raw
+    xor rdi, rdi
+    mov rsi, TCSETS
+    lea rdx, [raw_termios]
+    mov rax, SYS_IOCTL
+    syscall
+
+    # Print banner
+    mov rdi, 1
+    lea rsi, [banner]
+    mov rdx, BANNER_LEN
+    mov rax, SYS_WRITE
+    syscall
+
+    # Setup pollfds: [0]=stdin, [1]=serial
+    lea rbx, [pollfds]
+    mov dword ptr [rbx], 0              # fd = stdin
+    mov word ptr [rbx + 4], POLLIN      # events
+    mov word ptr [rbx + 6], 0           # revents
+
+    mov eax, [serial_fd]
+    mov dword ptr [rbx + 8], eax        # fd = serial
+    mov word ptr [rbx + 12], POLLIN
+    mov word ptr [rbx + 14], 0
+
+poll_loop:
+    lea rdi, [pollfds]
+    mov rsi, 2
+    mov rdx, -1                         # infinite timeout
+    mov rax, SYS_POLL
+    syscall
+
+    # Check stdin
+    lea rbx, [pollfds]
+    movzx eax, word ptr [rbx + 6]       # revents
+    test eax, POLLIN
+    jz check_serial
+
+    # Read stdin
+    xor rdi, rdi
+    lea rsi, [buf]
+    mov rdx, 256
+    mov rax, SYS_READ
+    syscall
+    test rax, rax
+    jle done
+
+    # Scan for Ctrl-D (0x04)
+    mov rcx, rax
+    lea rsi, [buf]
+scan:
+    cmp byte ptr [rsi], 4
+    je done
+    inc rsi
+    dec rcx
+    jnz scan
+
+    # Write to serial
+    mov rdi, [serial_fd]
+    lea rsi, [buf]
+    mov rdx, rax
+    mov rax, SYS_WRITE
+    syscall
+
+check_serial:
+    lea rbx, [pollfds]
+    movzx eax, word ptr [rbx + 14]      # revents
+    test eax, POLLIN
+    jz poll_loop
+
+    # Read serial
+    mov rdi, [serial_fd]
+    lea rsi, [buf]
+    mov rdx, 256
+    mov rax, SYS_READ
+    syscall
+    test rax, rax
+    jle poll_loop
+
+    # Write to stdout
+    mov rdx, rax
+    mov rdi, 1
+    lea rsi, [buf]
+    mov rax, SYS_WRITE
+    syscall
+    jmp poll_loop
+
+done:
+    # Restore stdin termios
+    xor rdi, rdi
+    mov rsi, TCSETS
+    lea rdx, [old_termios]
+    mov rax, SYS_IOCTL
+    syscall
+
+    # Close serial
+    mov rdi, [serial_fd]
+    mov rax, SYS_CLOSE
+    syscall
+
+    xor rdi, rdi
+    mov rax, SYS_EXIT
+    syscall
+
+exit_fail:
+    mov rdi, 1
+    mov rax, SYS_EXIT
+    syscall

tty_c/Makefile

@@ -0,0 +1,4 @@
+tty: tty.c
+	$(CC) -o $@ $<
+clean:
+	rm -f tty

tty_c/tty.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <poll.h>
+
+int main(void) {
+    int fd = open("/dev/ttyUSB0", O_RDWR | O_NOCTTY);
+    if (fd < 0) { perror("open"); return 1; }
+
+    // Configure serial port
+    struct termios tty;
+    tcgetattr(fd, &tty);
+    cfmakeraw(&tty);
+    cfsetspeed(&tty, B115200);
+    tty.c_cflag |= CLOCAL | CREAD;
+    tty.c_cc[VMIN] = 0;
+    tty.c_cc[VTIME] = 1;
+    tcsetattr(fd, TCSANOW, &tty);
+
+    // Set stdin to raw mode
+    struct termios old_stdin, raw_stdin;
+    tcgetattr(STDIN_FILENO, &old_stdin);
+    raw_stdin = old_stdin;
+    cfmakeraw(&raw_stdin);
+    tcsetattr(STDIN_FILENO, TCSANOW, &raw_stdin);
+
+    write(STDOUT_FILENO, "Holcks minitty - ctrl-d to exit\r\n", 33);
+
+    struct pollfd fds[2] = {
+        { .fd = STDIN_FILENO, .events = POLLIN },
+        { .fd = fd,           .events = POLLIN },
+    };
+
+    char buf[256];
+    while (1) {
+        poll(fds, 2, -1);
+        if (fds[0].revents & POLLIN) {
+            int n = read(STDIN_FILENO, buf, sizeof(buf));
+            if (n > 0) {
+                for (int i = 0; i < n; i++)
+                    if (buf[i] == 4) goto done; // Ctrl-D
+                write(fd, buf, n);
+            }
+        }
+        if (fds[1].revents & POLLIN) {
+            int n = read(fd, buf, sizeof(buf));
+            if (n > 0) write(STDOUT_FILENO, buf, n);
+        }
+    }
+
+done:
+    tcsetattr(STDIN_FILENO, TCSANOW, &old_stdin);
+    close(fd);
+    return 0;
+}

vedit/worklog.md

@@ -0,0 +1,44 @@
+
+## 2026-04-10 20:39:49
+User [chat]: Hello!
+AI: Hello, Anders! How are you doing today? Is there anything specific you'd like to talk about or any questions I can help you with?
+
+## 2026-04-10 20:40:00
+User [chat]: What are you doing?
+AI: I'm currently processing your messages and waiting to see how I can help you, Anders! Since I'm an AI, I don't have a physical life, so I spend my time analyzing text, answering questions, and chattin
+
+## 2026-04-10 20:41:29
+User [chat]: How can I control fans in Linux?
+AI: Controlling fans in Linux, Anders, is a bit of a delicate process because it requires interacting directly with your motherboard's hardware controllers. The most standard approach involves using a com
+
+## 2026-04-10 21:45:34
+User [chat]: How can I control fans in Linux?
+AI: Since you are asking again, Anders, perhaps you are looking for a more structured way to approach this, or maybe you are looking for alternatives to the command-line method I mentioned previously. Let
+
+## 2026-04-10 23:24:11
+User: Are you here?
+AI: Yes, I am here.
+
+## 2026-04-10 23:24:17
+User [chat]: Hello
+AI: Hello there. How are you doing today, Anders?
+
+## 2026-04-10 23:24:25
+User [chat]: Not much
+AI: I'm sorry to hear that. Is everything okay? Or are you just having a quiet day?
+
+## 2026-04-10 23:26:19
+User [chat]: All is ok!
+AI: That's good to hear! Sometimes just having an okay day is exactly what you need. Is there anything on your mind, or anything you'd like to talk about?
+
+## 2026-04-10 23:26:35
+User [chat]: Not really, I am just checking if you are running properly.
+AI: I am running perfectly, thank you for checking in on me, Anders. I am here and ready to chat whenever you are. Is there anything specific you wanted to test or discuss?
+
+## 2026-04-10 23:27:32
+User [chat]: Hello
+AI: Hello again, Anders! Still testing things out, or just saying hi one more time?
+
+## 2026-04-10 23:28:19
+User [chat]: Hej
+AI: Hej! How are things going on your end right now?