bullshit commit, sync for travel (to zn00H!) :)

[my-code/arm.git] / betty / buttons.c

diff --git a/betty/buttons.c b/betty/buttons.c
index ba76f8d..735befd 100644 (file)
--- a/betty/buttons.c
+++ b/betty/buttons.c
@@ -7,53 +7,60 @@
 
 #include "buttons.h"
 
-void button_init(void) {
+#define BUTTON_RESET \
+       IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24))
 
-       /* 
-        * select as input the following pins
-        *  - p0.30 : interrupt, wtf is the 'vw 3 p9'?
-        *  - p0.28, p0.27, p3.21, p3.20, p0.22, p0.13 : column select
+#define BUTTON_UNSET \
+       IOCLR2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24))
+
+#define COUNT_AND_CHECK        cnt++; \
+                               if(cnt==BUTTON_MAX) \
+                                       break
+
+void button_init(t_button *button) {
+
+       /*
+        * input:
+        *  - p0.30 : interrupt! wtf is the 'vw 3 p9'? a transistor?
+        *  - p0.28, p0.27, p3.21, p3.20, p0.22, p0.13 : the columns
         *
-        *  select as output
+        * output:
         *  - p2.18-p2.24 : the rows
         */
 
-       // gpio, as is: p3.20, p3.21
-       PINSEL1&=~((1<<29)|(1<<28));    // p0.30
-       PINSEL1&=~((1<<25)|(1<<24));    // p0.28
-       PINSEL1&=~((1<<23)|(1<<22));    // p0.27
-       PINSEL1&=~((1<<13)|(1<<12));    // p0.22
-       PINSEL0&=~((1<<27)|(1<<26));    // p0.13
-       // ctrl databus for p2.18 - p2.24
-       PINSEL2&=(PINSEL2&(~((1<<5)|(1<<4))))|(1<<4);
-       // input
-       IODIR0&=~((1<<30)|(1<<28)|(1<<27)|(1<<22)|(1<<13));
-       IODIR3&=~((1<<21)|(1<<20));
-       // output + pull them high
-       IODIR2|=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
-       IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
+       /* poll / interrupt mode */
+       if(button->mode&BUTTON_INT)
+               BUTTON_UNSET;
+       else if(button->mode&BUTTON_POLL)
+               BUTTON_RESET;
+}
+
+void button_set_retries(t_button *button,int retries) {
+
+       button->retries=retries;
 }
 
 void button_select_row(u8 row) {
 
-       IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
+       BUTTON_RESET;
        if(row>6)
                return;
        IOCLR2=(1<<(18+row));
 }
 
-u8 button_get_event(u64 *keys,int retries) {
+u8 button_get_event(t_button *button) {
 
        u8 row;
        u8 offset;
        u8 cnt;
        u32 port0,port3;
+       u8 tries;
 
-       *keys=0;
        cnt=0;
+       tries=button->retries+1;
 
-       while(retries--) {
-               /* rest counter */
+       while(tries--) {
+               /* rest offset counter */
                offset=0;
                /* rows */
                for(row=0;row<7;row++) {
@@ -61,37 +68,42 @@ u8 button_get_event(u64 *keys,int retries) {
                        button_select_row(row);
                        /* scan the columns 6 */
                        port0=IOPIN0;
-                       port3=IOPIN2;
+                       port3=IOPIN3;
                        if(!(port0&(1<<28))) {
-                               *keys|=(1<<(offset+0));
-                               cnt+=1;
+                               button->key[cnt]=offset+0;
+                               COUNT_AND_CHECK;
                        }
                        if(!(port0&(1<<27))) {
-                               *keys|=(1<<(offset+1));
-                               cnt+=1;
+                               button->key[cnt]=offset+1;
+                               COUNT_AND_CHECK;
                        }
                        if(!(port0&(1<<22))) {
-                               *keys|=(1<<(offset+2));
-                               cnt+=1;
+                               button->key[cnt]=offset+2;
+                               COUNT_AND_CHECK;
                        }
                        if(!(port0&(1<<13))) {
-                               *keys|=(1<<(offset+3));
-                               cnt+=1;
+                               button->key[cnt]=offset+3;
+                               COUNT_AND_CHECK;
                        }
                        if(!(port3&(1<<21))) {
-                               *keys|=(1<<(offset+4));
-                               cnt+=1;
+                               button->key[cnt]=offset+4;
+                               COUNT_AND_CHECK;
                        }
                        if(!(port3&(1<<20))) {
-                               *keys|=(1<<(offset+5));
-                               cnt+=1;
+                               button->key[cnt]=offset+5;
+                               COUNT_AND_CHECK;
                        }
                        offset+=6;
                }
-               if(*keys)
+               if(cnt)
                        break;
        }
 
+       if(button->mode&BUTTON_INT)
+               BUTTON_UNSET;
+       else if(button->mode&BUTTON_POLL)
+               BUTTON_RESET;
+
        return cnt;
 }