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Diffstat (limited to 'drivers/gdisp/Nokia6610GE8/gdisp_lld.c')
-rw-r--r--drivers/gdisp/Nokia6610GE8/gdisp_lld.c317
1 files changed, 201 insertions, 116 deletions
diff --git a/drivers/gdisp/Nokia6610GE8/gdisp_lld.c b/drivers/gdisp/Nokia6610GE8/gdisp_lld.c
index ed6861e8..65431c9b 100644
--- a/drivers/gdisp/Nokia6610GE8/gdisp_lld.c
+++ b/drivers/gdisp/Nokia6610GE8/gdisp_lld.c
@@ -41,7 +41,7 @@
#include "GE8.h"
-/* This controller is only ever used with a 132 x 132 display */
+/* This controller is only ever used with a 130 x 130 display */
#if defined(GDISP_SCREEN_HEIGHT)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GDISP_SCREEN_HEIGHT
@@ -50,8 +50,14 @@
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GDISP_SCREEN_WIDTH
#endif
-#define GDISP_SCREEN_HEIGHT 132
-#define GDISP_SCREEN_WIDTH 132
+#define GDISP_SCREEN_HEIGHT 130
+#define GDISP_SCREEN_WIDTH 130
+
+#define GDISP_SCAN_LINES 132 /* 130 lines + 2 invisible lines */
+#define GDISP_RAM_X_OFFSET 0 /* Offset in RAM of visible area */
+#define GDISP_RAM_Y_OFFSET 2 /* Offset in RAM of visible area */
+#define GDISP_SLEEP_SIZE 32 /* Sleep mode window lines */
+#define GDISP_SLEEP_POS ((GDISP_SCAN_LINES-GDISP_SLEEP_SIZE)/2)
#define GDISP_INITIAL_CONTRAST 38
#define GDISP_INITIAL_BACKLIGHT 100
@@ -79,18 +85,36 @@
#endif
// Some macros just to make reading the code easier
-#define delayms(ms) chThdSleepMilliseconds(ms)
-#define write_data2(d1, d2) { write_data(d1); write_data(d2); }
-#define write_data3(d1, d2, d3) { write_data(d1); write_data(d2); write_data(d3); }
-#define write_cmd1(cmd, d1) { write_cmd(cmd); write_data(d1); }
-#define write_cmd2(cmd, d1, d2) { write_cmd(cmd); write_data2(d1, d2); }
-#define write_cmd3(cmd, d1, d2, d3) { write_cmd(cmd); write_data3(d1, d2, d3); }
-
-// A very common thing to do.
+#define delayms(ms) chThdSleepMilliseconds(ms)
+#define write_data2(d1, d2) { write_data(d1); write_data(d2); }
+#define write_data3(d1, d2, d3) { write_data(d1); write_data(d2); write_data(d3); }
+#define write_data4(d1, d2, d3, d4) { write_data(d1); write_data(d2); write_data(d3); write_data(d4); }
+#define write_cmd1(cmd, d1) { write_cmd(cmd); write_data(d1); }
+#define write_cmd2(cmd, d1, d2) { write_cmd(cmd); write_data2(d1, d2); }
+#define write_cmd3(cmd, d1, d2, d3) { write_cmd(cmd); write_data3(d1, d2, d3); }
+#define write_cmd4(cmd, d1, d2, d3, d4) { write_cmd(cmd); write_data4(d1, d2, d3, d4); }
+
+// Set the drawing window on the controller.
// An inline function has been used here incase the parameters have side effects with the internal calculations.
-static inline void setviewport(coord_t x, coord_t y, coord_t cx, coord_t cy) {
- write_cmd2(CASET, x, x+cx-1); // Column address set
- write_cmd2(PASET, y, y+cy-1); // Page address set
+static __inline void setviewport(coord_t x, coord_t y, coord_t cx, coord_t cy) {
+ switch(GDISP.Orientation) {
+ case GDISP_ROTATE_0:
+ write_cmd2(CASET, GDISP_RAM_X_OFFSET+x, GDISP_RAM_X_OFFSET+x+cx-1); // Column address set
+ write_cmd2(PASET, GDISP_RAM_Y_OFFSET+y, GDISP_RAM_Y_OFFSET+y+cy-1); // Page address set
+ break;
+ case GDISP_ROTATE_90:
+ write_cmd2(CASET, GDISP_RAM_X_OFFSET+GDISP.Height-y-cy, GDISP_RAM_X_OFFSET+GDISP.Height-y-1);
+ write_cmd2(PASET, GDISP_RAM_Y_OFFSET+x, GDISP_RAM_Y_OFFSET+x+cx-1);
+ break;
+ case GDISP_ROTATE_180:
+ write_cmd2(CASET, GDISP_RAM_X_OFFSET+GDISP.Width-x-cx, GDISP_RAM_X_OFFSET+GDISP.Width-x-1);
+ write_cmd2(PASET, GDISP_RAM_Y_OFFSET+GDISP.Height-y-cy, GDISP_RAM_Y_OFFSET+GDISP.Height-y-1);
+ break;
+ case GDISP_ROTATE_270:
+ write_cmd2(CASET, GDISP_RAM_X_OFFSET+y, GDISP_RAM_X_OFFSET+y+cy-1);
+ write_cmd2(PASET, GDISP_RAM_Y_OFFSET+GDISP.Width-x-cx, GDISP_RAM_Y_OFFSET+GDISP.Width-x-1);
+ break;
+ }
}
/*===========================================================================*/
@@ -101,14 +125,8 @@ static inline void setviewport(coord_t x, coord_t y, coord_t cx, coord_t cy) {
/* Driver exported functions. */
/*===========================================================================*/
-/* ---- Required Routines ---- */
-/*
- The following 2 routines are required.
- All other routines are optional.
-*/
-
/**
- * @brief Low level GDISP driver initialization.
+ * @brief Low level GDISP driver initialisation.
*
* @notapi
*/
@@ -125,22 +143,24 @@ bool_t gdisp_lld_init(void) {
// Get the bus for the following initialisation commands
acquire_bus();
- write_cmd3(DISCTL, 0x00, 0x20, 0x00); // Display control
+ write_cmd4(DISCTL, 0x00, GDISP_SCAN_LINES/4-1, 0x0A, 0x00); // Display control - How the controller drives the LCD
// P1: 0x00 = 2 divisions, switching period=8 (default)
// P2: 0x20 = nlines/4 - 1 = 132/4 - 1 = 32)
- // P3: 0x00 = no inversely highlighted lines
- write_cmd1(COMSCN, 0x01); // COM scan P1: 0x01 = Scan 1->80, 160<-81
- write_cmd(OSCON); // Internal oscilator ON
+ // P3: 0x0A = standard inverse highlight, inversion every frame
+ // P4: 0x00 = dispersion on
+ write_cmd1(COMSCN, 0x01); // COM scan - How the LCD is connected to the controller
+ // P1: 0x01 = Scan 1->80, 160<-81
+ write_cmd(OSCON); // Internal oscillator ON
write_cmd(SLPOUT); // Sleep out
write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
- write_cmd3(DATCTL, 0x48, 0x00, 0x02); // Data control
- // P1: 0x01 = page address inverted, column address normal, address scan in column direction
+ write_cmd3(DATCTL, 0x00, 0x00, 0x02); // Data control
+ // P1: 0x00 = page address normal, column address normal, address scan in column direction
// P2: 0x00 = RGB sequence (default value)
- // P3: 0x02 = Grayscale -> 16 (selects 12-bit color, type A)
+ // P3: 0x02 = 4 bits per colour (Type A)
write_cmd2(VOLCTR, GDISP_INITIAL_CONTRAST, 0x03); // Voltage control (contrast setting)
// P1 = Contrast
// P2 = 3 resistance ratio (only value that works)
- delayms(100); // allow power supply to stabilize
+ delayms(100); // Allow power supply to stabilise
write_cmd(DISON); // Turn on the display
// Release the bus
@@ -197,7 +217,7 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
* @notapi
*/
void gdisp_lld_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
- unsigned i, tuples;
+ unsigned tuples;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
@@ -207,13 +227,13 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
- tuples = (cx*cy+1)/2; // With an odd sized area we over-print by one pixel.
- // This extra pixel is ignored by the controller.
+ tuples = (cx*cy+1)>>1; // With an odd sized area we over-print by one pixel.
+ // This extra pixel overwrites the first pixel (harmless as it is the same colour)
acquire_bus();
setviewport(x, y, cx, cy);
write_cmd(RAMWR);
- for(i=0; i < tuples; i++)
+ while(tuples--)
write_data3(((color >> 4) & 0xFF), (((color << 4) & 0xF0)|((color >> 8) & 0x0F)), (color & 0xFF));
release_bus();
}
@@ -223,20 +243,23 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
/**
* @brief Fill an area with a bitmap.
*
- * @param[in] x, y The start filled area
- * @param[in] cx, cy The width and height to be filled
- * @param[in] srcx, srcy The bitmap position to start the fill from
- * @param[in] srccx The width of a line in the bitmap.
- * @param[in] buffer The pixels to use to fill the area.
+ * @param[in] x, y The start filled area
+ * @param[in] cx, cy The width and height to be filled
+ * @param[in] srcx, srcy The bitmap position to start the fill from
+ * @param[in] srccx The width of a line in the bitmap.
+ * @param[in] buffer The pixels to use to fill the area.
*
* @notapi
*/
void gdisp_lld_blit_area_ex(coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t srcx, coord_t srcy, coord_t srccx, const pixel_t *buffer) {
- coord_t endx, endy, lg;
- color_t c1, c2;
+ coord_t lg;
+ color_t c1, c2;
+ unsigned tuples;
#if GDISP_PACKED_PIXELS
- coord_t pos;
- const uint8_t *p;
+ unsigned pnum, pstart;
+ const uint8_t *p;
+ #else
+ const pixel_t *p;
#endif
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
@@ -248,86 +271,123 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
- /* What are our end points */
- endx = srcx + cx;
- endy = y + cy;
-
+ /* Set up the data window to transfer */
+ tuples = (cx * cy + 1)>>1;
acquire_bus();
setviewport(x, y, cx, cy);
write_cmd(RAMWR);
+ /*
+ * Due to the way the Nokia6610 handles a decrementing column or page,
+ * we have to make adjustments as to where it is actually drawing from in the bitmap.
+ * For example, for 90 degree rotation the column is decremented on each
+ * memory write. The controller always starts with column 0 and then decrements
+ * to column cx-1, cx-2 etc. We therefore have to write-out the last bitmap line first.
+ */
+ switch(GDISP.Orientation) {
+ case GDISP_ROTATE_0: x = 0; y = 0; break;
+ case GDISP_ROTATE_90: x = 0; y = cy-1; break;
+ case GDISP_ROTATE_180: x = cx-1; y = cy-1; break;
+ case GDISP_ROTATE_270: x = cx-1; y = 0; break;
+ }
+
#if !GDISP_PACKED_PIXELS
// Although this controller uses packed pixels we support unpacked pixel
// formats in this blit by packing the data as we feed it to the controller.
- lg = srccx - cx;
- buffer += srcy * srccx + srcx;
- x = srcx;
- while (1) {
+
+ lg = srccx - cx; // The buffer gap between lines
+ buffer += srcy * srccx + srcx; // The buffer start position
+ p = buffer + srccx*y + x; // Adjustment for controller craziness
+
+ while(tuples--) {
/* Get a pixel */
- c1 = *buffer++;
- if (++x >= endx) {
- if (++y >= endy) {
- /* Odd pixel at end */
- write_data3(0, ((c1 >> 8) & 0x0F), (c1 & 0xFF));
- break;
+ c1 = *p++;
+
+ /* Check for line or buffer wrapping */
+ if (++x >= cx) {
+ x = 0;
+ p += lg;
+ if (++y >= cy) {
+ y = 0;
+ p = buffer;
}
- x = srcx;
- buffer += lg;
}
+
/* Get the next pixel */
- c2 = *buffer++;
- write_data3(((c1 >> 4) & 0xFF), (((c1 << 4) & 0xF0)|((c2 >> 8) & 0x0F)), (c2 & 0xFF));
- if (++x >= endx) {
- if (++y >= endy)
- break;
- x = srcx;
- buffer += lg;
+ c2 = *p++;
+
+ /* Check for line or buffer wrapping */
+ if (++x >= cx) {
+ x = 0;
+ p += lg;
+ if (++y >= cy) {
+ y = 0;
+ p = buffer;
+ }
}
+
+ /* Write the pair of pixels to the display */
+ write_data3(((c1 >> 4) & 0xFF), (((c1 << 4) & 0xF0)|((c2 >> 8) & 0x0F)), (c2 & 0xFF));
}
#else
// Although this controller uses packed pixels, we may have to feed it into
// the controller with different packing to the source bitmap
+ // There are 2 pixels per 3 bytes
+
#if !GDISP_PACKED_LINES
srccx = (srccx + 1) & ~1;
#endif
- pos = srcy*srccx;
- lg = (srccx - cx)/2*3;
- p = ((const uint8_t *)buffer) + ((pos+srcx)/2 * 3);
+ pstart = srcy * srccx + srcx; // The starting pixel number
+ buffer = (const pixel_t)(((const uint8_t *)buffer) + ((pstart>>1) * 3)); // The buffer start position
+ lg = ((srccx-cx)>>1)*3; // The buffer gap between lines
+ pnum = pstart + srccx*y + x; // Adjustment for controller craziness
+ p = ((const uint8_t *)buffer) + (((srccx*y + x)>>1)*3); // Adjustment for controller craziness
- x = srcx;
- while (1) {
+ while (tuples--) {
/* Get a pixel */
- switch((pos+x)&1) {
- case 0: c1 = (((color_t)p[0]) << 4)|(((color_t)p[1])>>4); break;
- case 1: c1 = (((color_t)p[1]&0x0F) << 8)|((color_t)p[1]); break;
+ switch(pnum++ & 1) {
+ case 0: c1 = (((color_t)p[0]) << 4)|(((color_t)p[1])>>4); break;
+ case 1: c1 = (((color_t)p[1]&0x0F) << 8)|((color_t)p[1]); p += 3; break;
}
- if (++x >= endx) {
- if (++y >= endy) {
- /* Odd pixel at end */
- write_data3(0, ((c1 >> 8) & 0x0F), (c1 & 0xFF));
- break;
- }
- x = srcx;
+
+ /* Check for line or buffer wrapping */
+ if (++x >= cx) {
+ x = 0;
p += lg;
- pos += srccx;
+ pnum += srccx - cx;
+ if (++y >= cy) {
+ y = 0;
+ p = (const uint8_t *)buffer;
+ pnum = pstart;
+ }
}
+
/* Get the next pixel */
- switch((pos+x)&1) {
- case 0: c2 = (((color_t)p[0]) << 4)|(((color_t)p[1])>>4); break;
- case 1: c2 = (((color_t)p[1]&0x0F) << 8)|((color_t)p[1]); break;
+ switch(pnum++ & 1) {
+ case 0: c1 = (((color_t)p[0]) << 4)|(((color_t)p[1])>>4); break;
+ case 1: c1 = (((color_t)p[1]&0x0F) << 8)|((color_t)p[1]); p += 3; break;
}
- write_data3(((c1 >> 4) & 0xFF), (((c1 << 4) & 0xF0)|((c2 >> 8) & 0x0F)), (c2 & 0xFF));
- if (++x >= endx) {
- if (++y >= endy)
- break;
- x = srcx;
+
+ /* Check for line or buffer wrapping */
+ if (++x >= cx) {
+ x = 0;
p += lg;
- pos += srccx;
+ pnum += srccx - cx;
+ if (++y >= cy) {
+ y = 0;
+ p = (const uint8_t *)buffer;
+ pnum = pstart;
+ }
}
+
+ /* Write the pair of pixels to the display */
+ write_data3(((c1 >> 4) & 0xFF), (((c1 << 4) & 0xF0)|((c2 >> 8) & 0x0F)), (c2 & 0xFF));
}
#endif
+
+ /* All done */
release_bus();
}
#endif
@@ -343,8 +403,8 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
*/
color_t gdisp_lld_get_pixel_color(coord_t x, coord_t y) {
/* NOT IMPLEMENTED */
- /* Some board hardware might support this in the future.
- * The Olimex board doesn't.
+ /* This controller does not support reading back over the SPI interface.
+ * Additionally, the Olimex board doesn't even connect the pin.
*/
}
#endif
@@ -364,8 +424,11 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
*/
void gdisp_lld_vertical_scroll(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) {
/* NOT IMPLEMENTED */
- /* The hardware seems capable of doing this.
- * It is just really complex so we leave it out for now.
+ /**
+ * The hardware is capable of doing full width vertical scrolls aligned
+ * on a 4 line boundary however that is not sufficient to support this routine.
+ *
+ * We also can't manually do read/modify scrolling because we can't read in SPI mode.
*/
}
#endif
@@ -392,68 +455,91 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
*/
void gdisp_lld_control(unsigned what, void *value) {
/* The hardware is capable of supporting...
- * GDISP_CONTROL_POWER - not implemented yet
- * GDISP_CONTROL_ORIENTATION - not implemented yet
- * GDISP_CONTROL_BACKLIGHT - supported (the OlimexSAM7EX256 board.h currently only implements off/on although PWM is supported by the hardware)
+ * GDISP_CONTROL_POWER - supported
+ * GDISP_CONTROL_ORIENTATION - supported
+ * GDISP_CONTROL_BACKLIGHT - supported
* GDISP_CONTROL_CONTRAST - supported
*/
switch(what) {
-#if 0
- // NOT IMPLEMENTED YET
case GDISP_CONTROL_POWER:
if (GDISP.Powermode == (gdisp_powermode_t)value)
return;
+ acquire_bus();
switch((gdisp_powermode_t)value) {
case powerOff:
- // Code here
+ set_backlight(0); // Turn off the backlight
+ write_cmd(DISOFF); // Turn off the display
+ write_cmd1(PWRCTR, 0x00); // Power control - all off
+ write_cmd(SLPIN); // Sleep in
+ write_cmd(OSCOFF); // Internal oscillator off
break;
case powerOn:
- // Code here
- /* You may need this ---
- * if (GDISP.Powermode != powerSleep)
- * gdisp_lld_init();
- */
+ write_cmd(OSCON); // Internal oscillator on
+ write_cmd(SLPOUT); // Sleep out
+ write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
+ write_cmd2(VOLCTR, GDISP.Contrast, 0x03); // Voltage control (contrast setting)
+ delayms(100); // Allow power supply to stabilise
+ write_cmd(DISON); // Turn on the display
+ write_cmd(PTLOUT); // Remove sleep window
+ set_backlight(GDISP.Backlight); // Turn on the backlight
break;
case powerSleep:
- /* Code here */
+ write_cmd(OSCON); // Internal oscillator on
+ write_cmd(SLPOUT); // Sleep out
+ write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
+ write_cmd2(VOLCTR, GDISP.Contrast, 0x03); // Voltage control (contrast setting)
+ delayms(100); // Allow power supply to stabilise
+ write_cmd(DISON); // Turn on the display
+ write_cmd2(PTLIN, GDISP_SLEEP_POS/4, (GDISP_SLEEP_POS+GDISP_SLEEP_SIZE)/4); // Sleep Window
+ set_backlight(GDISP.Backlight); // Turn on the backlight
+ break;
+ case powerDeepSleep:
+ write_cmd(OSCON); // Internal oscillator on
+ write_cmd(SLPOUT); // Sleep out
+ write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
+ write_cmd2(VOLCTR, GDISP.Contrast, 0x03); // Voltage control (contrast setting)
+ delayms(100); // Allow power supply to stabilise
+ write_cmd(DISON); // Turn on the display
+ write_cmd2(PTLIN, GDISP_SLEEP_POS/4, (GDISP_SLEEP_POS+GDISP_SLEEP_SIZE)/4); // Sleep Window
+ set_backlight(0); // Turn off the backlight
break;
default:
+ release_bus();
return;
}
+ release_bus();
GDISP.Powermode = (gdisp_powermode_t)value;
return;
-#endif
-#if 0
- // NOT IMPLEMENTED YET
case GDISP_CONTROL_ORIENTATION:
if (GDISP.Orientation == (gdisp_orientation_t)value)
return;
- // WriteSpiData(0x48); // no mirror Y (temporary to satisfy Olimex bmptoarray utility)
- // WriteSpiData(0xC8); // restore to (mirror x and y, reverse rgb)
+ acquire_bus();
switch((gdisp_orientation_t)value) {
case GDISP_ROTATE_0:
- // Code here
+ write_cmd3(DATCTL, 0x00, 0x00, 0x02); // P1: page normal, column normal, scan in column direction
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
- // Code here
+ write_cmd3(DATCTL, 0x06, 0x00, 0x02); // P1: page normal, column reverse, scan in page direction
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
- // Code here
+ write_cmd3(DATCTL, 0x03, 0x00, 0x02); // P1: page reverse, column reverse, scan in column direction
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
- // Code here
+ write_cmd3(DATCTL, 0x05, 0x00, 0x02); // P1: page reverse, column normal, scan in page direction
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
default:
+ release_bus();
return;
}
+ release_bus();
#if GDISP_NEED_CLIP || GDISP_NEED_VALIDATION
GDISP.clipx0 = 0;
GDISP.clipy0 = 0;
@@ -462,7 +548,6 @@ void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
#endif
GDISP.Orientation = (gdisp_orientation_t)value;
return;
-#endif
case GDISP_CONTROL_BACKLIGHT:
if ((unsigned)value > 100) value = (void *)100;
set_backlight((unsigned)value);
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