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sed1520 driver: Add an option for inverted segment mapping (idea by R. Buchert)

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mmdolze
2012-12-27 11:19:41 +00:00
parent 0fdbf82334
commit 7b316f4d96
3 changed files with 48 additions and 16 deletions
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ChangeLog
+3
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@@ -6,6 +6,9 @@ Key:
* Something changed / fixed
v0.5dev (ongoing development)
* sed1520: Add an option for inverted segment mapping (idea by R. Buchert)
v0.5.6
- Remove deprecated CFontz633 driver. Use CFontzPacket with Model=633 instead!
+ new driver: glcd unified graphic display driver (M. Dolze)
+ new driver: vlsys_m428 driver for Moneual MonCaso 320 (W. Hauck)
LCDd.conf
+10 -1
View File
@@ -1054,8 +1054,17 @@ DelayMult=0
# The original wiring used an inverter to drive the control lines. If you do
# not use an inverter set haveInverter to no. [default: yes; legal: yes, no]
haveInverter=no
HaveInverter=no
# On some displays column data in memory is mapped to segment lines from right
# to left. This is called inverted mapping (not to be confused with
# 'haveInverter' from above). [default: no; legal: yes, no]
#InvertedMapping=yes
# At least one display is reported (Everbouquet MG1203D) that requires sending
# three times 0xFF before a reset during initialization.
# [default: no; legal: yes, no]
#UseHardReset=yes
## serial POS display driver ##
server/drivers/sed1520.c
+35 -15
View File
@@ -48,8 +48,8 @@
#define HEIGHT ((int) (PIXELHEIGHT / CELLHEIGHT)) /* 4 */
#define A0 nSEL /* pin 17 */
#define CS1 nLF /* pin 14 */
#define CS2 INIT /* pin 16 */
#define CS1 nLF /* pin 14, EN1 for 68-style connection */
#define CS2 INIT /* pin 16, EN2 for 68-style connection */
#define WR nSTRB /* pin 1 */
/** private data for the \c sed1520 driver */
@@ -58,6 +58,7 @@ typedef struct sed1520_private_data {
int interface;
int delayMult;
int haveInverter;
unsigned char colStartAdd;
unsigned char *framebuf;
} PrivateData;
@@ -70,7 +71,7 @@ MODULE_EXPORT int supports_multiple = 0;
MODULE_EXPORT char *symbol_prefix = "sed1520_";
/**
* Writes command value to one or both sed1520 selected by chip.
* Writes command value to one or both SED1520 selected by chip.
* \param p Pointer to private data structure
* \param value Command byte to write
* \param chip Bitmap of controllers to send value to
@@ -86,7 +87,8 @@ writecommand(PrivateData *p, int value, int chip)
port_out(p->port, value);
/* cycle E */
port_out(p->port + 2, ((chip & CS1) + (chip & CS2)) ^ OUTMASK);
if (p->delayMult) uPause(p->delayMult);
if (p->delayMult)
uPause(p->delayMult);
port_out(p->port + 2, 0 ^ OUTMASK);
}
else {
@@ -120,7 +122,7 @@ writecommand(PrivateData *p, int value, int chip)
}
/**
* Writes data value to one or both sed 1520 selected by chip.
* Writes data value to one or both SED1520 selected by chip.
* \param p Pointer to private data structure
* \param value Data byte to write
* \param chip Bitmap of controllers to send value to
@@ -133,7 +135,8 @@ writedata(PrivateData *p, int value, int chip)
port_out(p->port, value);
/* cycle E */
port_out(p->port + 2, (A0 + (chip & CS1) + (chip & CS2)) ^ OUTMASK);
if (p->delayMult) uPause(p->delayMult);
if (p->delayMult)
uPause(p->delayMult);
port_out(p->port + 2, (A0) ^ OUTMASK);
}
else {
@@ -161,7 +164,7 @@ writedata(PrivateData *p, int value, int chip)
}
/**
* Selects a page (=row) on both sed1520s.
* Selects a page (=row) on both SED1520.
* \param p Pointer to private data structure
* \param page Page (=row) number (0-3)
*/
@@ -172,7 +175,7 @@ selectpage(PrivateData *p, int page)
}
/**
* Selects a column on the sed1520 specified by chip.
* Selects a column on the SED1520 specified by chip.
* \param p Pointer to private data structure
* \param column Select column (segment) in controller (0-60)
* \param chip Bitmap of controllers to send value to
@@ -194,13 +197,13 @@ selectcolumn(PrivateData *p, int column, int chip)
*
* To write data to display memory one selects the page and column and then
* writes bytes of pixel data to the display. The column counter is increased
* by each write so the display fills from left ro right (the SED1520 can
* also be configured to write from right to left).
* by each write so the display fills from left to right (normal mode) or
* right to left (inverted mapping).
*/
/**
* Draws character z from fontmap to the framebuffer at position x,y.
* The Fontmap is stored in rows while the framebuffer is stored in columns,
* The fontmap is stored in rows while the framebuffer is stored in columns,
* so we need a little conversion.
*
* \param framebuf Pointer to framebuffer
@@ -236,6 +239,7 @@ MODULE_EXPORT int
sed1520_init(Driver * drvthis)
{
PrivateData *p;
char inverted;
/* Allocate and store private data */
p = (PrivateData *) calloc(1, sizeof(PrivateData));
@@ -287,10 +291,26 @@ sed1520_init(Driver * drvthis)
* The original wiring used an inverter to drive the control lines. As
* someone may still be using this, the following setting in ON by default.
*/
p->haveInverter = drvthis->config_get_bool(drvthis->name, "haveInverter", 0, 1);
p->haveInverter = drvthis->config_get_bool(drvthis->name, "HaveInverter", 0, 1);
/*
* Inverted Mapping: Segments are addressed from right to left and start
* at column 19 (address 0x13) up to column 79 (address 0x4F).
*/
inverted = drvthis->config_get_bool(drvthis->name, "InvertedMapping", 0, 0);
if (inverted)
p->colStartAdd = 0x13;
else
p->colStartAdd = 0;
/* Initialize display */
if (drvthis->config_get_bool(drvthis->name, "UseHardReset", 0, 0) == 1) {
writedata(p, 0xFF, CS1 + CS2);
writedata(p, 0xFF, CS1 + CS2);
writedata(p, 0xFF, CS1 + CS2);
}
writecommand(p, SOFT_RESET, CS1 + CS2);
writecommand(p, (inverted) ? ADC_INV : ADC_NORM, CS1 + CS2);
writecommand(p, DISP_ON, CS1 + CS2);
writecommand(p, DISP_START_LINE, CS1 + CS2);
selectpage(p, 3);
@@ -300,7 +320,7 @@ sed1520_init(Driver * drvthis)
}
/**
* API: Frees the frambuffer and exits the driver.
* API: Frees the framebuffer and exits the driver.
*/
MODULE_EXPORT void
sed1520_close(Driver * drvthis)
@@ -378,12 +398,12 @@ sed1520_flush(Driver * drvthis)
selectpage(p, i);
/* update left half of display */
selectcolumn(p, 0, CS1);
selectcolumn(p, p->colStartAdd, CS1);
for (j = 0; j < PIXELWIDTH / 2; j++)
writedata(p, p->framebuf[j + (i * PIXELWIDTH)], CS1);
/* update right half of display */
selectcolumn(p, 0, CS2);
selectcolumn(p, p->colStartAdd, CS2);
for (j = PIXELWIDTH / 2; j < PIXELWIDTH; j++)
writedata(p, p->framebuf[j + (i * PIXELWIDTH)], CS2);
}