[taler-taler-mdb] branch master updated: display backlight invert option flag

[gnunet]

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marco-boss pushed a commit to branch master
in repository taler-mdb.

The following commit(s) were added to refs/heads/master by this push:
     new d0eb9b5  display backlight invert option flag
d0eb9b5 is described below

commit d0eb9b58e045b1fe08071b471b5f335f26122878
Author: Boss Marco <address@hidden>
AuthorDate: Tue Dec 10 14:57:51 2019 +0100

    display backlight invert option flag
---
 .gitignore                      |  1 +
 src/main.c                      | 19 ++++++++++++++++---
 src/{main.c => main.c.autosave} | 30 +++++++++++++++++++++++++++---
 3 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index 2d69254..b09e31a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@ src/.deps/
 src/Makefile
 src/Makefile.am~
 src/Makefile.in
+src/taler-mdb
 stamp-h1
 *.pro*
 .qmake*
diff --git a/src/main.c b/src/main.c
index c719f81..e9ddb5a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -552,6 +552,10 @@ static char *framebuffer_device_filename;
  */
 static char *framebuffer_backlight_filename;
 
+static int backlight_invert;
+static char backlight_on = '1';
+static char backlight_off = '0';
+
 /**
  * Name of the UART device with the MDB (i.e. /dev/ttyAMA0).
  */
@@ -712,7 +716,7 @@ show_qrcode (const char *uri)
   QRinput_free (qri);
 
   if (0 < qrDisplay.backlightfd)
-    (void) write (qrDisplay.backlightfd, "1", 1);
+    (void) write (qrDisplay.backlightfd, &backlight_on, 1);
 }
 
 
@@ -755,7 +759,7 @@ cleanup_payment (struct PaymentActivity *pa)
               qrDisplay.var_info.xres * qrDisplay.var_info.yres
               * sizeof (uint16_t));
     if (0 < qrDisplay.backlightfd)
-      (void) write (qrDisplay.backlightfd, "0", 1);
+      (void) write (qrDisplay.backlightfd, &backlight_off, 1);
 #endif
     GNUNET_free (pa->taler_pay_uri);
   }
@@ -2422,7 +2426,12 @@ run (void *cls,
     }
     else
     {
-      (void) write (qrDisplay.backlightfd, "0", 1);
+      if (backlight_invert)
+      {
+        backlight_on = '0';
+        backlight_off = '1';
+      }
+      (void) write (qrDisplay.backlightfd, &backlight_off, 1);
     }
   }
   else
@@ -2508,6 +2517,10 @@ main (int argc,
                                "disable-tty",
                                "disable all keyboard interactions (for running 
from systemd)",
                                &disable_tty),
+    GNUNET_GETOPT_option_flag ('i',
+                               "backlight-invert",
+                               "invert the backlight on/off values (standard 
on = 1)",
+                               &backlight_invert),
     GNUNET_GETOPT_OPTION_END
   };
   int have_tty;
diff --git a/src/main.c b/src/main.c.autosave
similarity index 98%
copy from src/main.c
copy to src/main.c.autosave
index c719f81..20487f5 100644
--- a/src/main.c
+++ b/src/main.c.autosave
@@ -552,6 +552,21 @@ static char *framebuffer_device_filename;
  */
 static char *framebuffer_backlight_filename;
 
+/**
+ * Global option '-i' to invert backlight on/off values
+ */
+static int backlight_invert;
+
+/**
+ * Standard backlight on value
+ */
+static char backlight_on = '1';
+
+/**
+ * Standard backlight off value
+ */
+static char backlight_off = '0';
+
 /**
  * Name of the UART device with the MDB (i.e. /dev/ttyAMA0).
  */
@@ -712,7 +727,7 @@ show_qrcode (const char *uri)
   QRinput_free (qri);
 
   if (0 < qrDisplay.backlightfd)
-    (void) write (qrDisplay.backlightfd, "1", 1);
+    (void) write (qrDisplay.backlightfd, &backlight_on, 1);
 }
 
 
@@ -755,7 +770,7 @@ cleanup_payment (struct PaymentActivity *pa)
               qrDisplay.var_info.xres * qrDisplay.var_info.yres
               * sizeof (uint16_t));
     if (0 < qrDisplay.backlightfd)
-      (void) write (qrDisplay.backlightfd, "0", 1);
+      (void) write (qrDisplay.backlightfd, &backlight_off, 1);
 #endif
     GNUNET_free (pa->taler_pay_uri);
   }
@@ -2422,7 +2437,12 @@ run (void *cls,
     }
     else
     {
-      (void) write (qrDisplay.backlightfd, "0", 1);
+      if (backlight_invert)
+      {
+        backlight_on = '0';
+        backlight_off = '1';
+      }
+      (void) write (qrDisplay.backlightfd, &backlight_off, 1);
     }
   }
   else
@@ -2508,6 +2528,10 @@ main (int argc,
                                "disable-tty",
                                "disable all keyboard interactions (for running 
from systemd)",
                                &disable_tty),
+    GNUNET_GETOPT_option_flag ('i',
+                               "backlight-invert",
+                               "invert the backlight on/off values (standard 
on = 1)",
+                               &backlight_invert),
     GNUNET_GETOPT_OPTION_END
   };
   int have_tty;

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