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authorreinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2005-12-20 07:07:44 +0000
committerreinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2005-12-20 07:07:44 +0000
commit213594414361e470ef3ac1b655091934a129094f (patch)
treeab40f6618a5cf52ca1a5d95a2d985ac4194334eb /drv_generic_gpio.c
parentda2e1bd82366d5d75d8e67c18179f76b9baf7a65 (diff)
downloadlcd4linux-213594414361e470ef3ac1b655091934a129094f.tar.gz
[lcd4linux @ 2005-12-20 07:07:43 by reinelt]
further work on GPO's, HD44780 GPO support git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@604 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
Diffstat (limited to 'drv_generic_gpio.c')
-rw-r--r--drv_generic_gpio.c53
1 files changed, 46 insertions, 7 deletions
diff --git a/drv_generic_gpio.c b/drv_generic_gpio.c
index 4e3a811..c4bf69b 100644
--- a/drv_generic_gpio.c
+++ b/drv_generic_gpio.c
@@ -1,4 +1,4 @@
-/* $Id: drv_generic_gpio.c,v 1.1 2005/12/18 16:18:36 reinelt Exp $
+/* $Id: drv_generic_gpio.c,v 1.2 2005/12/20 07:07:44 reinelt Exp $
*
* generic driver helper for GPO's
*
@@ -23,6 +23,9 @@
*
*
* $Log: drv_generic_gpio.c,v $
+ * Revision 1.2 2005/12/20 07:07:44 reinelt
+ * further work on GPO's, HD44780 GPO support
+ *
* Revision 1.1 2005/12/18 16:18:36 reinelt
* GPO's added again
*
@@ -37,8 +40,8 @@
*
* these functions must be implemented by the real driver:
*
- * void (*drv_generic_gpio_real_set) (const int num, const int val);
- * sets GPO num to val
+ * int (*drv_generic_gpio_real_set) (const int num, const int val);
+ * sets GPO num to val, returns the actal value
*
* int (*drv_generic_gpio_real_get) (const int num);
* reads GPI num
@@ -88,6 +91,43 @@ int GPOS = 0;
int GPIS = 0;
+static void drv_generic_gpio_plugin_gpo(RESULT * result, const int argc, RESULT * argv[])
+{
+ int num, val;
+ double gpo;
+
+ switch (argc) {
+ case 1:
+ num = R2N(argv[0]);
+ if (num <= 0 || num > GPOS) {
+ error("%s::GPO(%d): GPO out of range (1..%d)", Driver, num, GPOS);
+ SetResult(&result, R_STRING, "");
+ return;
+ }
+ gpo = GPO[num-1];
+ SetResult(&result, R_NUMBER, &gpo);
+ break;
+ case 2:
+ num = R2N(argv[0]);
+ val = R2N(argv[1]);
+ if (num <= 0 || num > GPOS) {
+ error("%s::GPO(%d): GPO out of range (1..%d)", Driver, num, GPOS);
+ SetResult(&result, R_STRING, "");
+ return;
+ }
+ if (GPO[num-1] != val) {
+ GPO[num-1] = drv_generic_gpio_real_set(num-1, val);
+ }
+ gpo = GPO[num-1];
+ SetResult(&result, R_NUMBER, &gpo);
+ break;
+ default:
+ error("%s::GPO(): wrong number of parameters", Driver);
+ SetResult(&result, R_STRING, "");
+ }
+}
+
+
int drv_generic_gpio_init(const char *section, const char *driver)
{
WIDGET_CLASS wc;
@@ -109,7 +149,7 @@ int drv_generic_gpio_init(const char *section, const char *driver)
/* register plugins */
- /* Fixme */
+ AddFunction("LCD::GPO", -1, drv_generic_gpio_plugin_gpo);
return 0;
}
@@ -126,7 +166,7 @@ int drv_generic_gpio_clear(void)
/* really clear GPO's */
for (i = 0; i < GPOS; i++) {
- drv_generic_gpio_real_set(i, 0);
+ GPO[i] = drv_generic_gpio_real_set(i, 0);
}
return 0;
@@ -145,8 +185,7 @@ int drv_generic_gpio_draw(WIDGET * W)
}
if (GPO[num] != val) {
- drv_generic_gpio_real_set(num, val);
- GPO[num] = val;
+ GPO[num] = drv_generic_gpio_real_set(num, val);
}
return 0;