added notes about launch on boot

firmware/ibmpc/Inc/helpers.h

@@ -42,7 +42,7 @@ typedef struct
 
 typedef struct
 {
-  int16_t movement_x;
+  int16_t movement_x;=x
   int16_t movement_y;
   int16_t scroll_vertical;
   uint8_t button_left;

firmware/ibmpc/Src/main.c

@@ -161,10 +161,11 @@ void ps2mouse_update(void)
 
   if(ps2mouse_get_outgoing_data(this_mouse_event, &my_ps2_outbuf))
   {
-    // no need to send out packets
+    // if return value is not 0, no need to send out packets
     ps2mouse_buf_pop(&my_ps2mouse_buf);
     return;
   }
+  // only pop the item if sending is complete
   if(ps2mouse_send_update(&my_ps2_outbuf) == 0)
     ps2mouse_buf_pop(&my_ps2mouse_buf);
 }

notes.txt

@@ -50,3 +50,14 @@ cat /proc/interrupts
 
 change keyboard LED
 sudo bash -c 'echo 1 > /sys/class/leds/input5\:\:capslock/brightness'
+
+
+run script on launch:
+
+https://raspberrypi-guide.github.io/programming/run-script-on-boot
+
+sudo nano /etc/rc.local
+
+cd /home/pi/usb4vc; sudo python3 usb4vc_main.py &
+
+kill -SIGINT pid

user_program/usb4vc_main.py

@@ -7,7 +7,7 @@ import usb4vc_oled
 
 RPI_APP_VERSION_TUPLE = (0, 0, 1)
 
-# usb4vc_oled.print_welcome_screen(RPI_APP_VERSION_TUPLE)
+usb4vc_oled.print_welcome_screen(RPI_APP_VERSION_TUPLE)
 # time.sleep(5)
 # usb4vc_oled.oled_clear()