More cleanups

[uccvend-snackrom.git] / ROM2 / display.c

diff --git a/ROM2/display.c b/ROM2/display.c
deleted file mode 100644 (file)
index 7da3b10..0000000
--- a/ROM2/display.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * display.c - functions for controlling the display on the vending machine.
- *
- *
- * XXX obsolted - with a backend on the server machine, we don't need to
- * handle scrolling, etc here. Replaced by display_basic.[cho]
- *
- * Use set_msg(char*) to write a new message to the screen, replacing the
- * previous one. The message can be at most 255 characters long. Use
- * set_wrap_mode with one of the WRAP_* options in vend.h to set the scrolling
- * behaviour. If the message is less than 10 characters, it is not scrolled.
- * Otherwise, the message will scroll.
- *
- */
-
-#include "display.h"
-#include "vend.h"
-
-char display_buffer[10];    /* what each byte on the display reads          */
-char current_message[256];  /* message that is scrolled or switched between */
-u8   msg_length;            /* length of current_message                    */
-u8   wrap_mode;             /* whether to scroll or alternate between msgs  */
-u8   scroll_point;          /* how far through the message we have scrolled */
-bool have_scrolled;         /* true after one scroll (used for scroll_msg())*/
-
-/* private prototypes */
-void display_send_byte(char c);
-void display_reset();
-void display_update();
-
-void append_msg(char* newmsg, u8 wrap) {
-       char* dest = current_message+msg_length;
-       /* equivalent of a string copy */
-       while (newmsg) {
-               dest = newmsg;
-               dest++;
-               newmsg++;
-               msg_length++;
-       }
-       wrap_mode = wrap;
-}
-
-void set_msg(char* newmsg, u8 wrap) {
-       msg_length = 0;
-       append_msg(newmsg, wrap);
-       scroll_point = 0;
-       display_update();
-}
-
-void scroll_msg(char* newmsg) {
-       /* puts a message on display and does not return until the message has
-        * scrolled across once.
-        */
-       set_msg(newmsg, WRAP_SCROLL);
-       have_scrolled = 0;
-       while (!have_scrolled);
-}
-
-void display_shift() {
-       /* update the display for WRAP_SCROLL or WRAP_ALTERNATE modes */
-       switch (wrap_mode) {
-               case WRAP_SCROLL:
-               case WRAP_ALTERNATE:
-                       scroll_point++;
-                       if (scroll_point >= msg_length) {
-                               scroll_point = 0;
-                               have_scrolled = 1;
-                       }
-                       display_update();
-                       break;
-       }
-}
-
-void set_char(char c, u8 pos) {
-       /* sets a single character */
-       display_buffer[pos] = c;
-       display_update();
-}
-
-void display_send_byte(char c) {
-       bset_misc_output(A3800_DISPLAY_WRITE);  /* enable the display clock */
-
-       _io_ports[M6811_SPDR] = c;                  /* load SPI with byte */
-       while(!(_io_ports[M6811_SPDR]&M6811_SPIE)); /* wait for completion */
-       _io_ports[M6811_SPDR];                      /* SPDR read to clear SPIE flag */
-}
-
-#define DISPLAY_DELAY  100 /* ms to delay between ops - could be tweaked */
-void display_reset() {
-       /* lower the reset line for a while */
-       bclr((void*)&_io_ports[M6811_PORTA], PORTA_DISP_RESET);
-       delay(DISPLAY_DELAY);
-       bset((void*)&_io_ports[M6811_PORTA], PORTA_DISP_RESET);
-
-       spi_enable();
-       delay(DISPLAY_DELAY);
-
-       display_send_byte(0xC0 | 10);    /* tell the controller there are 10 digits */
-       display_send_byte(0xE0);    /* set duty cycle to 100%                  */
-
-       spi_disable();
-}
-
-void display_update() {
-       u8 i;
-
-       for (i=0; i < 10; i++) {
-               display_buffer[i] = current_message[
-                       (i+(wrap_mode==WRAP_ALTERNATE?scroll_point/10:scroll_point))
-                       %msg_length];
-       }
-
-       /* hmmm, will this cause some flickering of the display? */
-       display_reset();
-       
-       for (i=0; i < 10; i++) {
-               display_send_byte(display_buffer[i]&0x7f);
-       }
-}
-
-void display_init() {
-       display_reset();
-}
-