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mirror of git://projects.qi-hardware.com/ben-blinkenlights.git synced 2024-07-01 00:19:51 +03:00

ubb-vga: avoid diodes; redesign for luminance bit (Y) and MMC controller

- ubb-vga.sch: use resistive divider instead of diodes
- ubb-vga.sch, ubb-vga.c (VSYNC): moved VSYNC from DAT3 to CLK to make
  all MMC data lines available for pixel data
- ubb-vga.sch, ubb-vga.c (R): moved red from DAT2 to DAT3 for convenient
  access to the 4th channel
- ubb-vga.sch: added luminance (Y) channel
- ubb-vga.sch: added pull-down to HSYNC/CMD, for later use with the MMC
  controller
- ubb-vga.c (pdfuns, pdfunc, ben_setup, setup): make UBB signals GPIOs,
  in case someone left them in a different configuration
This commit is contained in:
Werner Almesberger 2011-04-27 16:48:07 -03:00
parent ce1c6af24f
commit a794c4b1b2
2 changed files with 298 additions and 169 deletions

View File

@ -48,11 +48,11 @@ static uint8_t thres = 63;
#define CMD (1 << 8)
#define CLK (1 << 9)
#define R DAT2
#define R DAT3
#define G DAT0
#define B DAT1
#define HSYNC CMD
#define VSYNC DAT3
#define VSYNC CLK
/* ----- Ben hardware ------------------------------------------------------ */
@ -73,6 +73,7 @@ static uint32_t old_clkgr;
static volatile uint32_t *pdpin, *pddats, *pddatc;
static volatile uint32_t *pddirs, *pddirc;
static volatile uint32_t *pdfuns, *pdfunc;
static volatile uint32_t *tssr, *tscr;
static volatile uint32_t *tesr, *tecr;
@ -169,6 +170,9 @@ static void ben_setup(void)
pddats = base+0x10314;
pddatc = base+0x10318;
pdfuns = base+0x10344;
pdfunc = base+0x10348;
pddirs = base+0x10364;
pddirc = base+0x10368;
@ -237,6 +241,7 @@ void setup(void)
{
mlockall(MCL_CURRENT | MCL_FUTURE);
ben_setup();
*pdfunc = R | G | B | HSYNC | VSYNC;
*pddirs = R | G | B | HSYNC | VSYNC;
}

View File

@ -1,4 +1,4 @@
EESchema Schematic File Version 2 date Sun Apr 24 02:16:48 2011
EESchema Schematic File Version 2 date Wed Apr 27 16:44:31 2011
LIBS:power
LIBS:device
LIBS:8_10-card
@ -9,237 +9,361 @@ EELAYER END
$Descr A4 11700 8267
Sheet 1 1
Title "UBB VGA Adapter"
Date "24 apr 2011"
Rev "20110424"
Date "27 apr 2011"
Rev "20110427"
Comp "Werner Almesberger"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
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G
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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8150 4100 8150 3400
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Wire Wire Line
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Wire Wire Line
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4750 3600 4750 3400
Wire Wire Line
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Wire Wire Line
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Connection ~ 6300 3200
4750 3200 3750 3200
Wire Wire Line
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1900 3900 1900 4800
Wire Wire Line
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7550 3400 7550 2100
Wire Wire Line
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7550 3400 8150 3400
Wire Wire Line
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8150 3400 9500 3400
Wire Notes Line
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Wire Wire Line
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6800 3500 7100 3500
Wire Wire Line
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7100 3500 7100 3800
Wire Wire Line
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Wire Wire Line
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3750 3300 5400 3300
Wire Wire Line
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5400 3300 5500 3300
Wire Wire Line
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5500 3300 6300 3300
Wire Wire Line
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6300 3500 5800 3500
Wire Wire Line
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5700 3500 3750 3500
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Wire Wire Line
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Wire Wire Line
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6000 3700 6000 3900
Connection ~ 5800 2400
Wire Wire Line
3750 3200 6300 3200
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Wire Wire Line
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1900 3900 2550 3900
Connection ~ 4750 4100
Wire Wire Line
3750 3400 4850 3400
4750 4100 3750 4100
Wire Wire Line
4850 3400 4850 3800
6000 4400 6000 4600
Wire Wire Line
8850 3400 5050 3400
5400 4600 5400 4400
Wire Wire Line
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Wire Wire Line
5050 2650 1900 2650
9300 3700 9300 4300
Wire Wire Line
1900 2650 1900 3600
5700 4400 5700 4600
Wire Wire Line
1900 3600 2550 3600
NoConn ~ 2550 3200
NoConn ~ 2550 3400
NoConn ~ 2550 4000
4750 4000 3750 4000
Wire Wire Line
2550 3700 1900 3700
Wire Wire Line
9500 3200 8550 3200
Wire Wire Line
8550 3200 8550 2400
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
6100 2400 6100 2600
Connection ~ 6100 2400
Wire Wire Line
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Connection ~ 6100 3700
Wire Wire Line
5800 3100 5800 3500
Connection ~ 5800 3500
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Notes Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
3750 3400 4750 3400
Connection ~ 4750 3400
Wire Wire Line
8150 4600 8150 4800
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1 8150 4800
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$EndComp
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VSYNC_GND
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HSYNC_GND
Text Label 3950 3600 0 60 ~ 0
BLUE
BLUE_RTN
Text Label 3950 3400 0 60 ~ 0
GREEN
GREEN_RTN
Text Label 3950 3200 0 60 ~ 0
RED
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NoConn ~ 3750 3700
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NoConn ~ 3750 3300
NoConn ~ 3750 3100
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1 1 674 mV
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Text Notes 5250 5400 0 60 ~ 0
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0 0 0 mV
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VSYNC
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HSYNC
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1 6300 4800
1 0 0 -1
$EndComp
$Comp
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1 8650 4300
1 0 0 -1
$EndComp
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1 6300 4400
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1 6650 4400
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$EndComp
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1 7000 4400
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Text Label 2100 3700 0 60 ~ 0
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RED
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1 9300 4300
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$EndComp
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1 9150 3500
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F 1 "UBB" H 9850 2900 60 0000 C CNN
1 9800 3500
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$Comp
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$EndSCHEMATC