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make {Off,}Brightness run-time configurable in range [0, 1000]

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This commit is contained in:
marschap
2006-11-26 20:08:56 +00:00
parent 220dd0a783
commit 1d4d4443e8
5 changed files with 60 additions and 13 deletions
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server/drivers/CFontz.c
+50 -6
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@@ -161,8 +161,8 @@ CFontz_init(Driver *drvthis)
/* Which backlight brightness */
tmp = drvthis->config_get_int(drvthis->name, "Brightness", 0, DEFAULT_BRIGHTNESS);
if ((tmp < 0) || (tmp > 255)) {
report(RPT_WARNING, "%s: Brightness must be between 0 and 255; using default %d",
if ((tmp < 0) || (tmp > 1000)) {
report(RPT_WARNING, "%s: Brightness must be between 0 and 1000; using default %d",
drvthis->name, DEFAULT_BRIGHTNESS);
tmp = DEFAULT_BRIGHTNESS;
}
@@ -170,8 +170,8 @@ CFontz_init(Driver *drvthis)
/* Which backlight-off "brightness" */
tmp = drvthis->config_get_int(drvthis->name, "OffBrightness", 0, DEFAULT_OFFBRIGHTNESS);
if ((tmp < 0) || (tmp > 255)) {
report(RPT_WARNING, "%s: OffBrightness must be between 0 and 255; using default %d",
if ((tmp < 0) || (tmp > 1000)) {
report(RPT_WARNING, "%s: OffBrightness must be between 0 and 1000; using default %d",
drvthis->name, DEFAULT_OFFBRIGHTNESS);
tmp = DEFAULT_OFFBRIGHTNESS;
}
@@ -490,6 +490,48 @@ CFontz_set_contrast(Driver *drvthis, int promille)
}
/**
* Retrieve brightness.
* \param drvthis Pointer to driver structure.
* \param state Brightness state (on/off) for which we want the value.
* \return Stored brightness in promille.
*/
MODULE_EXPORT int
CFontz_get_brightness(Driver *drvthis, int state)
{
PrivateData *p = drvthis->private_data;
return (state == BACKLIGHT_ON) ? p->brightness : p->offbrightness;
}
/**
* Set on/off brightness.
* \param drvthis Pointer to driver structure.
* \param state Brightness state (on/off) for which we want to store the value.
* \param promille New brightness in promille.
*/
MODULE_EXPORT void
CFontz_set_brightness(Driver *drvthis, int state, int promille)
{
PrivateData *p = drvthis->private_data;
/* Check it */
if (promille < 0 || promille > 1000)
return;
/* store the software value since there is not get */
if (state == BACKLIGHT_ON) {
p->brightness = promille;
//CFontz_backlight(drvthis, BACKLIGHT_ON);
}
else {
p->offbrightness = promille;
//CFontz_backlight(drvthis, BACKLIGHT_OFF);
}
}
/**
* Turn the LCD backlight on or off.
* \param drvthis Pointer to driver structure.
@@ -499,9 +541,11 @@ MODULE_EXPORT void
CFontz_backlight(Driver *drvthis, int on)
{
PrivateData *p = drvthis->private_data;
char out[4] = { CFONTZ_Backlight_Control, 0 };
unsigned char out[4] = { CFONTZ_Backlight_Control, 0 };
int promille = (on == BACKLIGHT_ON) ? p->brightness : p->offbrightness;
out[1] = (on) ? p->brightness : p->offbrightness;
/* map range [0, 1000] -> [0, 255] that the hardware understands */
out[1] = (unsigned char) ((long) promille * 255 / 1000);
write(p->fd, out, 2);
}