From e9c00dc481ecded4c1dce280970fc06156f471f6 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 22 Oct 2018 10:49:50 +0200
Subject: fonts.h neu

---
 anzeige.c | 91 +++++++++++++++++++++++++++++----------------------------------
 1 file changed, 42 insertions(+), 49 deletions(-)

(limited to 'anzeige.c')

diff --git a/anzeige.c b/anzeige.c
index cddc0a8..55c234a 100644
--- a/anzeige.c
+++ b/anzeige.c
@@ -24,6 +24,8 @@
 #include <string.h>
 #include <pthread.h>
 
+#include "fonts.h"
+
 #define PAGE_SIZE (4*1024)
 #define BLOCK_SIZE (4*1024)
 
@@ -37,7 +39,7 @@ int  mem_fd;
 void *gpio_map;
 
 typedef struct {
-   char buf[2][35];
+   char buf[3][40];
    int should_buf, is_buf, keep_running;
 } t_display_data;
 
@@ -74,13 +76,7 @@ void printButton(int g)
 int main(int argc, char **argv)
 {
   pthread_t thread_id;
-  t_display_data display_data = {
-    "abcdefghijklmnopqrstuvwxyzabcdefghi",
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHI",
-    0,
-    0,
-    1
-  };
+  t_display_data display_data;
 
 #ifndef SKIP_GPIO
   // Set up gpi pointer for direct register access
@@ -110,15 +106,18 @@ int main(int argc, char **argv)
   INP_GPIO(SENSE_PIN);
 #endif
 
+  for (int i=0; i<3; i++)
+    memset(display_data.buf[i],0,40);
+  display_data.is_buf = 0;
+  display_data.should_buf = 0;
+  display_data.keep_running = 1;
   pthread_create(&thread_id, NULL, put_on_display, &display_data);
 
   for (int i=0; i<20; i++) {
-     usleep(500000);
-     if (display_data.should_buf == display_data.is_buf) {
-        for (int j=0; j<35; j++)
-           display_data.buf[1-display_data.is_buf][j] -= 1;
-     }
-     display_data.should_buf ^= 0x01;
+    usleep(2500000);
+    for (int j=0; j<39; j++)
+      display_data.buf[(display_data.should_buf+1)%3][j] = symbols[(40*i+j)%sizeof(symbols)];
+    display_data.should_buf = (display_data.should_buf+1)%3;
   }
 
   display_data.keep_running = 0;
@@ -186,51 +185,45 @@ void drop_privileges()
 void *put_on_display(void *param)
 {
    t_display_data *display_data = param;
-   char *raw_output;
-   int line;
-
-   raw_output = malloc(7*(5+1));
-   if (raw_output == NULL) {
-      perror("malloc failed");
-      exit(-1);
-   }
+   int line, column;
 
    while (display_data -> keep_running) {
 
 #ifdef SKIP_GPIO
-      printf("\n");
+      usleep(100000);
+      printf("=\n");
 #endif
       display_data -> is_buf = display_data -> should_buf;
+#ifdef SKIP_GPIO
+      for (line=6; line>=0; line--) {
+         for (column=0; column<40; column++) {
+            if ((*(display_data -> buf[display_data -> is_buf] + column)>>line) & 0x01)
+               printf("X");
+            else
+               printf(".");
+#else
       for (line=0; line<7; line++) {
-         raw_output[line*6] = 1<<line;
-         memmove(raw_output+1+6*line,&(display_data -> buf[display_data -> is_buf][5*line]),5);
-      }
-         for (line=0; line<7; line++) {
-#ifndef SKIP_GPIO
-            GPIO_CLR = 1<<GATE_PIN; // Licht an
+         GPIO_CLR = 1<<GATE_PIN; // Licht an
+         for (column=0; column<8; column++) {
+            GPIO_CLR = 1<<SER_CLK_PIN;
+            GPIO_ALTER(column == line) = 1<<SER_DAT_PIN;
+            GPIO_SET = 1<<SER_CLK_PIN;
+         }
+         for (column=39; column>=0; column--) {
+            GPIO_CLR = 1<<SER_CLK_PIN;
+            GPIO_ALTER((*(display_data -> buf[display_data -> is_buf] + column)>>line) & 0x01) = 1<<SER_DAT_PIN;
+            GPIO_SET = 1<<SER_CLK_PIN;
 #endif
-            for (int byte=0; byte<6; byte++) {
-#ifndef SKIP_GPIO
-               for (int bit=0; bit<8; bit++) {
-                  GPIO_CLR = 1<<SER_CLK_PIN;
-                  GPIO_ALTER((*(raw_output+6*line+byte)>>bit) & 0x01) = 1<<SER_DAT_PIN;
-                  GPIO_SET = 1<<SER_CLK_PIN;
-               }
+         }
+         usleep(1000);
+#ifdef SKIP_GPIO
+         printf("\n");
 #else
-               if (byte==0)
-                  printf(" %02x ", *(raw_output+6*line+byte));
-               else
-                  printf("%c", *(raw_output+6*line+byte));
+         GPIO_SET = 1<<GATE_PIN; // Licht aus
+         GPIO_CLR = 1<<PAR_CLK_PIN;
+         GPIO_SET = 1<<PAR_CLK_PIN;
 #endif
-            }
-            usleep(1000);
-#ifndef SKIP_GPIO
-            GPIO_SET = 1<<GATE_PIN; // Licht aus
-            GPIO_CLR = 1<<PAR_CLK_PIN;
-            GPIO_SET = 1<<PAR_CLK_PIN;
-#endif
-         }
+      }
    }
-   free(raw_output);
    return NULL;
 } // put_on_screen
-- 
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