more changes

diff --git a/ROM2/display.c b/ROM2/display.c
index b05d33a..84df86e 100644 (file)
--- a/ROM2/display.c
+++ b/ROM2/display.c
@@ -17,6 +17,7 @@ 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);
@@ -24,7 +25,7 @@ void display_reset();
 void display_update();
 
 void append_msg(char* newmsg, u8 wrap) {
-       char* dest = current_message[msg_length];
+       char* dest = current_message+msg_length;
        /* equivalent of a string copy */
        while (newmsg) {
                dest = newmsg;
@@ -42,13 +43,25 @@ void set_msg(char* newmsg, u8 wrap) {
        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;
+                       if (scroll_point >= msg_length) {
+                               scroll_point = 0;
+                               have_scrolled = 1;
+                       }
                        display_update();
                        break;
        }

diff --git a/ROM2/display.h b/ROM2/display.h
index 0f7c3b9..6121e7f 100644 (file)
--- a/ROM2/display.h
+++ b/ROM2/display.h
@@ -17,6 +17,7 @@ extern
 void display_init();
 void append_msg(char* newmsg, u8 wrap);
 void set_msg(char* newmsg, u8 wrap);
+void scroll_msg(char* newmsg);
 void set_char(char c, u8 pos);
 void set_wrap_mode(u8 new_wrap_mode);
 void display_refresh();

diff --git a/ROM2/helpers.c b/ROM2/helpers.c
index c4e5970..74cb40b 100644 (file)
--- a/ROM2/helpers.c
+++ b/ROM2/helpers.c
@@ -1,3 +1,4 @@
+#include "display.h"
 #include "vend.h"
 
 #define DELAY_MAGIC 20 /* FIXME: number of loops for ~ 1 millisecond (< 256) */

diff --git a/ROM2/main.c b/ROM2/main.c
index 2960c52..0026edc 100644 (file)
--- a/ROM2/main.c
+++ b/ROM2/main.c
@@ -30,10 +30,9 @@ bool uid_enter() {
                uid = (uid*10) + (last_key%10);
                set_char((last_key%10)+'0', 4+uidpos);
        }
-       return 1;
+       return (uid!=0);
 }
 
-
 bool pin_enter() {
        u8 pinpos;
        /* We ask for a pin, display a PIN: prompt. PINs must be a 4 digit number.
@@ -57,6 +56,7 @@ bool pin_enter() {
 }
 
 void make_request(u8 selection) {
+       set_msg("REQUESTING", WRAP_NONE); /* XXX: maybe this isn't needed? */
        switch(server_request(uid, pin, selection)) {
                case REQUEST_OK:
                        set_msg("THANK YOU!", WRAP_NONE);
@@ -84,7 +84,7 @@ void selection_menu() {
        set_msg("ENTER SELECTION OR INSERT COINS  ", WRAP_SCROLL);
        selection = 0;
        while(1) {
-               if (coin_value) {
+               if (coin_value) { /* we have coins inserted */
                        int prev_coin = 0;
                        /* alternate between the price and a confirm message */
                        while (coin_value) {
@@ -97,7 +97,7 @@ void selection_menu() {
                                if (keypad_pressed()) {
                                        switch (last_key) {
                                                case KEY_RESET:
-                                                       coin_refund();
+                                                       scroll_msg("PRESS COIN REFUND");
                                                        goto reset;
                                                case KEY_0:
                                                        switch (server_credit_account(uid, pin, coin_value)) {

diff --git a/ROM2/types.h b/ROM2/types.h
index 8746dcc..360ad58 100644 (file)
--- a/ROM2/types.h
+++ b/ROM2/types.h
@@ -2,6 +2,7 @@
 #define _TYPES_H_
 
 /* FIXME: are these typedefs right for m68hc11-gcc? */
+/*   XXX: see gcc manual for types */
 typedef unsigned char    u8;
 typedef signed char      s8;
 typedef unsigned short   u16;