diff options
Diffstat (limited to 'drivers/gdisp/SSD1306/gdisp_lld.c')
| -rw-r--r-- | drivers/gdisp/SSD1306/gdisp_lld.c | 729 |
1 files changed, 153 insertions, 576 deletions
diff --git a/drivers/gdisp/SSD1306/gdisp_lld.c b/drivers/gdisp/SSD1306/gdisp_lld.c index 5f337b54..36ba9686 100644 --- a/drivers/gdisp/SSD1306/gdisp_lld.c +++ b/drivers/gdisp/SSD1306/gdisp_lld.c @@ -5,642 +5,219 @@ * http://ugfx.org/license.html
*/
-#include "gfx.h"
+/**
+ * @file drivers/gdisp/SSD1306/gdisp_lld.c
+ * @brief GDISP Graphics Driver subsystem low level driver source for the SSD1306 display.
+ */
-#include "SSD1306.h"
+#include "gfx.h"
#if GFX_USE_GDISP || defined(__DOXYGEN__)
-/* Include the emulation code for things we don't support */
-#include "gdisp/lld/emulation.c"
+#define GDISP_DRIVER_VMT GDISPVMT_SSD1306
+#include "../drivers/gdisp/SSD1306/gdisp_lld_config.h"
+#include "gdisp/lld/gdisp_lld.h"
+
+#include "board_SSD1306.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SCREEN_HEIGHT
- #define GDISP_SCREEN_HEIGHT 64
+ #define GDISP_SCREEN_HEIGHT 64 // This controller should support 32 (untested) or 64
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 128
#endif
+#ifndef GDISP_INITIAL_CONTRAST
+ #define GDISP_INITIAL_CONTRAST 100
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+ #define GDISP_INITIAL_BACKLIGHT 100
+#endif
-#define GDISP_INITIAL_CONTRAST 0xFF
+#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
+
+#include "SSD1306.h"
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
-// Include wiring specific header
-#include "gdisp_lld_board_example_i2c.h"
+// Some common routines and macros
+#define RAM(g) ((uint8_t *)g->priv)
+#define write_cmd2(g, cmd1, cmd2) { write_cmd(g, cmd1); write_cmd(g, cmd2); }
+#define write_cmd3(g, cmd1, cmd2, cmd3) { write_cmd(g, cmd1); write_cmd(g, cmd2); write_cmd(g, cmd3); }
// Some common routines and macros
#define delay(us) gfxSleepMicroseconds(us)
#define delayms(ms) gfxSleepMilliseconds(ms)
-// The memory buffer for the display
-static uint8_t gdisp_buffer[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH / 8];
-
-/** Set the display to normal or inverse.
- * @param[in] value 0 for normal mode, or 1 for inverse mode.
- * @notapi
- */
-static void invert_display(uint8_t i) {
- write_cmd(i ? SSD1306_INVERTDISPLAY : SSD1306_NORMALDISPLAY);
-}
-
-/** Turn the whole display off.
- * Sends the display to sleep, but leaves RAM intact.
- * @notapi
- */
-static void display_off(){
- write_cmd(SSD1306_DISPLAYOFF);
-}
-
-/** Turn the whole display on.
- * Wakes up this display following a sleep() call.
- * @notapi
- */
-static void display_on() {
- write_cmd(SSD1306_DISPLAYON);
-}
-
-/** Set the vertical shift by COM.
- * @param[in] value The number of rows to shift, from 0 - 63.
- * @notapi
-*/
-static void set_display_offset(unsigned char value) {
- write_cmd(SSD1306_SETDISPLAYOFFSET);
- write_cmd(value & 0x3F);
-}
-
-/** Set the display contrast.
- * @param[in] value The contrast, from 1 to 256.
- * @notapi
- */
-static void set_contrast(unsigned char value) {
- write_cmd(SSD1306_SETCONTRAST);
- write_cmd(value);
-}
-
-/** Set the display start line. This is the line at which the display will start rendering.
- * @param[in] value A value from 0 to 63 denoting the line to start at.
- * @notapi
- */
-static void set_display_start_line(unsigned char value) {
- write_cmd(SSD1306_SETSTARTLINE | value);
-}
-
-/** Set the segment remap state. This allows the module to be addressed as if flipped horizontally.
- * NOTE: Changing this setting has no effect on data already in the module's GDDRAM.
- * @param[in] value 0 = column address 0 = segment 0 (the default), 1 = column address 127 = segment 0 (flipped).
- * @notapi
- */
-static void set_segment_remap(unsigned char value) {
- write_cmd(value ? SSD1306_SEGREMAP+1 : SSD1306_SEGREMAP);
-}
-
-/** Set the multiplex ratio.
- * @param[in] value MUX will be set to (value+1). Valid values range from 15 to 63 - MUX 16 to 64.
- * @notapi
- */
-static void set_multiplex_ratio(unsigned char value) {
- write_cmd(SSD1306_SETMULTIPLEX);
- write_cmd(value & 0x3F);
-}
-
-/** Set COM output scan direction. If the display is active, this will immediately vertically
- * flip the display.
- * @param[in] value 0 = Scan from COM0 (default), 1 = reversed (scan from COM[N-1]).
- * @notapi
- */
-static void set_com_output_scan_direction(unsigned char value) {
- write_cmd(value ? SSD1306_COMSCANDEC : SSD1306_COMSCANINC);
-}
-
-static void set_com_pins_hardware_configuration(unsigned char sequential, unsigned char lr_remap) {
- write_cmd(SSD1306_SETCOMPINS);
- write_cmd(0x02 | ((sequential & 1) << 4) | ((lr_remap & 1) << 5));
-}
-
-/** Flip display content horizontally.
- * NOTE: This only flips display content, but doesn't turn the char writing around.
- * You have to unmirror everything manually.
- * @param[in] value 0 = column address 0 = segment 0 (the default), 1 = column address 127 = segment 0 (flipped).
- * @notapi
- */
-static void flip_display(unsigned char enable) {
- if( enable && GDISP.Orientation == GDISP_ROTATE_0) {
- set_com_output_scan_direction(0);
- set_segment_remap(0);
- GDISP.Orientation = GDISP_ROTATE_0;
- }
- if( !enable && GDISP.Orientation == GDISP_ROTATE_180) {
- set_com_output_scan_direction(1);
- set_segment_remap(1);
- GDISP.Orientation = GDISP_ROTATE_180;
- }
- else
- return;
-}
-
-/** Perform a "no operation".
- * @notapi
- */
-static void nop() {
- write_cmd(0xE3);
-}
-
-/** Page Addressing Mode: Set the column start address register for
- * page addressing mode.
- * @param[in] address The address (full byte).
- * @notapi
- */
-static void set_start_address_pam(unsigned char address)
-{
- // "Set Lower Column Start Address for Page Addressing Mode"
- write_cmd(address & 0x0F);
-
- // "Set Higher Column Start Address for Page Addressing Mode"
- write_cmd((address << 4) & 0x0F);
-}
-
-/** Set memory addressing mode to the given value.
- * @param[in] mode 0 for Horizontal addressing mode,\n 1 for Vertical addressing mode,\n or 2 for Page addressing mode (PAM). 2 is the default.
- * @notapi
- */
-static void set_memory_addressing_mode(unsigned char mode)
-{
- write_cmd(SSD1306_MEMORYMODE);
- write_cmd(mode & 0x3);
-}
-
-/** Set column address range for horizontal/vertical addressing mode.
- * @param[in] start Column start address, 0 - 127.
- * @param[in] end Column end address, 0 - 127.
- * @notapi
- */
-static void set_column_address_hvam(unsigned char start, unsigned char end)
-{
- write_cmd(SSD1306_HV_COLUMN_ADDRESS);
- write_cmd(start & 0x7F);
- write_cmd(end & 0x7F);
-}
-
-/** Set page start and end address for horizontal/vertical addressing mode.
- * @param[in] start The start page, 0 - 7.
- * @param[in] end The end page, 0 - 7.
- * @notapi
- */
-static void set_page_address_hvam(unsigned char start, unsigned char end)
-{
- write_cmd(SSD1306_HV_PAGE_ADDRESS);
- write_cmd(start & 0x07);
- write_cmd(end & 0x07);
-}
-
-/** Set the GDDRAM page start address for page addressing mode.
- * @param[in] address The start page, 0 - 7.
- * @notapi
- */
-static void set_page_start_pam(unsigned char address)
-{
- write_cmd(SSD1306_PAM_PAGE_START | (address & 0x07));
-}
-
-/** Set the display clock divide ratio and the oscillator frequency.
- * @param[in] ratio The divide ratio, default is 0.
- * @param[in] frequency The oscillator frequency, 0 - 127. Default is 8.
- * @notapi
- */
-static void set_display_clock_ratio_and_frequency(unsigned char ratio, unsigned char frequency)
-{
- write_cmd(SSD1306_SETDISPLAYCLOCKDIV);
- write_cmd((ratio & 0x0F) | ((frequency & 0x0F) << 4));
-}
-
-/** Set the precharge period.
- * @param[in] phase1 Phase 1 period in DCLK clocks. 1 - 15, default is 2.
- * @param[in] phase2 Phase 2 period in DCLK clocks. 1 - 15, default is 2.
- * @notapi
- */
-static void set_precharge_period(unsigned char phase1, unsigned char phase2)
-{
- write_cmd(SSD1306_SETPRECHARGE);
- write_cmd((phase1 & 0x0F) | ((phase2 & 0x0F ) << 4));
-}
-
-/** Set the Vcomh deselect level.
- * @param[in] level @p 0 = 0.65 x Vcc, @p 1 = 0.77 x Vcc (default), @p 2 = 0.83 x Vcc.
- * @notapi
- */
-static void set_vcomh_deselect_level(unsigned char level)
-{
- write_cmd(SSD1306_SETVCOMDETECT);
- write_cmd((level & 0x03) << 4);
-}
-
-/** Enable/disable charge pump.
- * @param[in] enable 0 to disable, 1 to enable the internal charge pump.
- * @notapi
- */
-static void set_charge_pump(unsigned char enable)
-{
- write_cmd(SSD1306_ENABLE_CHARGE_PUMP);
- write_cmd(enable ? 0x14 : 0x10);
-}
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
-/* ---- Required Routines ---- */
-/*
- The following 2 routines are required.
- All other routines are optional.
-*/
-
/**
- * @brief Low level GDISP driver initialization.
- *
- * @notapi
- */
-bool_t gdisp_lld_init(void) {
- // Initialize your display
- init_board();
-
- // Hardware reset.
- setpin_reset(TRUE);
- delayms(1);
- setpin_reset(FALSE);
- delayms(10);
- setpin_reset(TRUE);
-
- // Get the bus for the following initialization commands.
- acquire_bus();
-
- display_off();
- set_display_clock_ratio_and_frequency(0, 8);
- #if GDISP_SCREEN_HEIGHT == 64
- set_multiplex_ratio(0x3F); // 1/64 duty
- #endif
- #if GDISP_SCREEN_HEIGHT == 32
- set_multiplex_ratio(0x1F); // 1/32 duty
- #endif
- set_precharge_period(0xF, 0x01); //
- set_display_offset(0); //
- set_display_start_line(0); //
- set_charge_pump(1); // Enable internal charge pump.
- set_memory_addressing_mode(0); // horizontal addressing mode; across then down //act like ks0108 (horizontal addressing mode)
- set_segment_remap(1); //
- set_com_output_scan_direction(1); //
+ * As this controller can't update on a pixel boundary we need to maintain the
+ * the entire display surface in memory so that we can do the necessary bit
+ * operations. Fortunately it is a small display in monochrome.
+ * 64 * 128 / 8 = 1024 bytes.
+ */
+
+LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
+ // The private area is the display surface.
+ g->priv = gfxAlloc(GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH / 8);
+
+ // Initialise the board interface
+ init_board(g);
+
+ // Hardware reset
+ setpin_reset(g, TRUE);
+ gfxSleepMilliseconds(20);
+ setpin_reset(g, FALSE);
+ gfxSleepMilliseconds(20);
+
+ acquire_bus(g);
+
+ write_cmd(g, SSD1306_DISPLAYOFF);
+ write_cmd2(g, SSD1306_SETDISPLAYCLOCKDIV, 0x80);
+ write_cmd2(g, SSD1306_SETMULTIPLEX, GDISP_SCREEN_HEIGHT-1);
+ write_cmd2(g, SSD1306_SETPRECHARGE, 0x1F);
+ write_cmd2(g, SSD1306_SETDISPLAYOFFSET, 0);
+ write_cmd(g, SSD1306_SETSTARTLINE | 0);
+ write_cmd2(g, SSD1306_ENABLE_CHARGE_PUMP, 0x14);
+ write_cmd2(g, SSD1306_MEMORYMODE, 0);
+ write_cmd(g, SSD1306_SEGREMAP+1);
+ write_cmd(g, SSD1306_COMSCANDEC);
#if GDISP_SCREEN_HEIGHT == 64
- set_com_pins_hardware_configuration(1, 0);
- #endif
- #if GDISP_SCREEN_HEIGHT == 32
- set_com_pins_hardware_configuration(0, 1);
- #endif
- set_contrast(GDISP_INITIAL_CONTRAST); // Set initial contrast.
- set_vcomh_deselect_level(1); //
- display_on(); // Turn on OLED panel.
- invert_display(0); // Disable Inversion of display.
- set_column_address_hvam(0, 127); //
- set_page_address_hvam(0, 7); //
-
- release_bus();
-
- gdisp_lld_display();
-
- // Initialize the GDISP structure
- GDISP.Width = GDISP_SCREEN_WIDTH;
- GDISP.Height = GDISP_SCREEN_HEIGHT;
- GDISP.Orientation = GDISP_ROTATE_0;
- GDISP.Powermode = powerOn;
- GDISP.Contrast = GDISP_INITIAL_CONTRAST;
- #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
- GDISP.clipx0 = 0;
- GDISP.clipy0 = 0;
- GDISP.clipx1 = GDISP.Width;
- GDISP.clipy1 = GDISP.Height;
+ write_cmd2(g, SSD1306_SETCOMPINS, 0x12);
+ #else
+ write_cmd2(g, SSD1306_SETCOMPINS, 0x22);
#endif
+ write_cmd2(g, SSD1306_SETCONTRAST, (uint8_t)(GDISP_INITIAL_CONTRAST*256/101)); // Set initial contrast.
+ write_cmd2(g, SSD1306_SETVCOMDETECT, 0x10);
+ write_cmd(g, SSD1306_DISPLAYON);
+ write_cmd(g, SSD1306_NORMALDISPLAY);
+ write_cmd3(g, SSD1306_HV_COLUMN_ADDRESS, 0, GDISP_SCREEN_WIDTH-1);
+ write_cmd3(g, SSD1306_HV_PAGE_ADDRESS, 0, GDISP_SCREEN_HEIGHT/8-1);
+
+ // Finish Init
+ post_init_board(g);
+
+ // Release the bus
+ release_bus(g);
+
+ /* Initialise the GDISP structure */
+ g->g.Width = GDISP_SCREEN_WIDTH;
+ g->g.Height = GDISP_SCREEN_HEIGHT;
+ g->g.Orientation = GDISP_ROTATE_0;
+ g->g.Powermode = powerOn;
+ g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
+ g->g.Contrast = GDISP_INITIAL_CONTRAST;
return TRUE;
}
-/**
- * @brief Draws a pixel on the display.
- *
- * @param[in] x X location of the pixel
- * @param[in] y Y location of the pixel
- * @param[in] color The color of the pixel
- *
- * @notapi
- */
-void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
- #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
- if (x < GDISP.clipx0 || y < GDISP.clipy0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
- #endif
-
- if (color == SSD1306_WHITE)
- gdisp_buffer[x+ (y/8)*GDISP_SCREEN_WIDTH] |= (1<<y%8);
- else
- gdisp_buffer[x+ (y/8)*GDISP_SCREEN_WIDTH] &= ~(1<<y%8);
-}
-
-void gdisp_lld_display() {
- set_display_start_line(0);
+#if GDISP_HARDWARE_FLUSH
+ LLDSPEC void gdisp_lld_flush(GDisplay *g) {
+ unsigned i;
- /* We're sending half a line in one X-mission.*/
- uint8_t command[GDISP_SCREEN_WIDTH/2],
- cmdLength = sizeof(command)/sizeof(command[0]),
- parts = GDISP_SCREEN_WIDTH/cmdLength;
-
- for(int i=0; i<GDISP_SCREEN_HEIGHT/8; i++){
- for(int j = 0; j<parts; j++){
- memmove(command, &gdisp_buffer[i*GDISP_SCREEN_WIDTH + j*cmdLength], cmdLength);
- write_data(command, cmdLength);
- }
- }
-}
-
-/* ---- Optional Routines ---- */
-/*
- All the below routines are optional.
- Defining them will increase speed but everything
- will work if they are not defined.
- If you are not using a routine - turn it off using
- the appropriate GDISP_HARDWARE_XXXX macro.
- Don't bother coding for obvious similar routines if
- there is no performance penalty as the emulation software
- makes a good job of using similar routines.
- eg. If gfillarea() is defined there is little
- point in defining clear() unless the
- performance bonus is significant.
- For good performance it is suggested to implement
- fillarea() and blitarea().
-*/
-
-#if (GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL) || defined(__DOXYGEN__)
- /**
- * @brief Scroll vertically a section of the screen.
- * @note Optional.
- * @note If x,y + cx,cy is off the screen, the result is undefined.
- * @note If lines is >= cy, it is equivalent to a area fill with bgcolor.
- *
- * @param[in] x, y The start of the area to be scrolled
- * @param[in] cx, cy The size of the area to be scrolled
- * @param[in] lines The number of lines to scroll (Can be positive or negative)
- * @param[in] bgcolor The color to fill the newly exposed area.
- *
- * @notapi
- */
- void gdisp_lld_vertical_scroll(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) {
- #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
- if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
- if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; }
- if (!lines || cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
- if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
- if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
- #endif
-
- /* See datasheet table T10-1 for this*/
- uint8_t fHeight = (uint8_t)gdispGetFontMetric(gwinGetDefaultFont(), fontLineSpacing);
- set_multiplex_ratio(GDISP_SCREEN_HEIGHT - fHeight+1);
- set_display_offset(fHeight-2);
-
- /* Scrolling animation.*/
- for(int i=0; i<fHeight; i++){
- set_display_start_line(i);
- gfxSleepMilliseconds(10);
- }
-
- /* Shift buffer up a font line.*/
- for (int i = 0; i < GDISP_SCREEN_WIDTH*(GDISP_SCREEN_HEIGHT/8-1); i++) {
- gdisp_buffer[i] = gdisp_buffer[i+GDISP_SCREEN_WIDTH*(fHeight/8)] >> fHeight % 8;
- gdisp_buffer[i] |= gdisp_buffer[i+GDISP_SCREEN_WIDTH*(fHeight/8 + 1)] << (8 - fHeight%8);
- }
+ // Don't flush if we don't need it.
+ if (!(g->flags & GDISP_FLG_NEEDFLUSH))
+ return;
- /* Clear last page.*/
- memset( &gdisp_buffer[GDISP_SCREEN_HEIGHT*GDISP_SCREEN_WIDTH/8 - GDISP_SCREEN_WIDTH*2], SSD1306_BLACK, GDISP_SCREEN_WIDTH*2);
+ write_cmd(g, SSD1306_SETSTARTLINE | 0);
- /* Update display.*/
- gdisp_lld_display();
+ for(i=0; i < GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT/8; i+=GDISP_BUS_MAX_TRANSFER_SIZE)
+ write_data(g, RAM(g)+i, GDISP_BUS_MAX_TRANSFER_SIZE);
}
+#endif
- /**
- * @warning Implementation only fully supports left and right...some command issues here.
- * Activate a scroll for rows start through stop.
- * Hint, the display is 16 rows tall. To scroll the whole display, run:
- * @code
- * display.scrollright(0x00, 0x0F)
- * @endcode
- * @param[in] start The start of the area to be scrolled
- * @param[in] stop The size of the area to be scrolled
- * @param[in] dir direction of scrolling
- * [left, right, up, down, up_right, up_left, down_left, down_right]
- * @note Optional. *
- *
- * @notapi
- */
- void gdisp_lld_start_scroll(uint8_t dir, uint8_t start, uint8_t stop, uint8_t interval){
-// if(dir == GDISP_SCROLL_RIGHT || GDISP_SCROLL_LEFT || GDISP_SCROLL_UP) {
-// switch (dir) {
-// case GDISP_SCROLL_RIGHT:
-// write_cmd(SSD1306_SCROLL_HORIZONTAL_RIGHT);
-// break;
-// case GDISP_SCROLL_LEFT:
-// write_cmd(SSD1306_SCROLL_HORIZONTAL_LEFT);
-// break;
-// }
-// write_cmd(0X00); // Dummy byte.
-// write_cmd(start & 0x07); // Define start page address.
-// switch (interval) { // Set time interval between each scroll step (5 frames)
-// case 2: write_cmd(0x07); break; // 111b
-// case 3: write_cmd(0x04); break; // 100b
-// case 4: write_cmd(0x05); break; // 101b
-// case 5: write_cmd(0x00); break; // 000b
-// case 25: write_cmd(0x06); break; // 110b
-// case 64: write_cmd(0x01); break; // 001b
-// case 128: write_cmd(0x02); break; // 010b
-// case 256: write_cmd(0x03); break; // 011b
-// default:
-// // default to 2 frame interval
-// write_cmd(0x07); break;
-// }
-// write_cmd(stop & 0x07); // Define stop page address
-// write_cmd(0X01); // Set vertical scrolling offset as no row.
-// write_cmd(0XFF); // Undocumented but needed.
-// write_cmd(SSD1306_SCROLL_ACTIVATE);
-// }
-// else if(dir == GDISP_SCROLL_UP || GDISP_SCROLL_DOWN) {
-// switch (dir) {
-// case GDISP_SCROLL_UP:
-// gdisp_lld_set_vertical_scroll_area(0x00, GDISP_SCREEN_HEIGHT);
-// write_cmd(SSD1306_SCROLL_VERTICAL_AND_HORIZONTAL_RIGHT);
-// break;
-//
-// case GDISP_SCROLL_DOWN:
-// gdisp_lld_set_vertical_scroll_area(0x00, GDISP_SCREEN_HEIGHT);
-// write_cmd(SSD1306_SCROLL_VERTICAL_AND_HORIZONTAL_LEFT);
-// break;
-// }
-// write_cmd(0X00); // Dummy byte.
-// write_cmd(start); // Define start page address.
-// write_cmd(0X00); // Set time interval between each scroll step (5 frames)
-// write_cmd(stop); // Define stop page address
-// write_cmd(0X01); // Set vertical scrolling offset as no row.
-// write_cmd(SSD1306_SCROLL_ACTIVATE);
-// gdisp_lld_set_vertical_scroll_area(0x00, GDISP_SCREEN_HEIGHT-10);
-// write_cmd(SSD1306_SCROLL_VERTICAL_AND_HORIZONTAL_RIGHT);
-// write_cmd(0X00); // Dummy byte.
-// write_cmd(start); // Define start page address.
-// write_cmd(0X00); // Set time interval between each scroll step (5 frames)
-// write_cmd(stop); // Define stop page address
-// write_cmd(0X03); // Set vertical scrolling offset as no row.
-// write_cmd(SSD1306_SCROLL_ACTIVATE);
-// }
+#if GDISP_HARDWARE_DRAWPIXEL
+ LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
+ if (g->p.color != Black)
+ RAM(g)[g->p.x + (g->p.y>>3)*GDISP_SCREEN_WIDTH] |= (1<<(g->p.y&7));
+ else
+ RAM(g)[g->p.x + (g->p.y>>3)*GDISP_SCREEN_WIDTH] &= ~(1<<(g->p.y&7));
+ g->flags |= GDISP_FLG_NEEDFLUSH;
}
+#endif
- /**
- * Sets vertical scroll area of display.
- * @param[in] start The start of the area to be scrolled [y coordinate]
- * @param[in] stop The size of the area to be scrolled [y coordinate]
- * @note Optional. *
- *
- * @notapi
- */
- void gdisp_lld_set_vertical_scroll_area(uint8_t start, uint8_t stop){
- write_cmd(SSD1306_SCROLL_SET_VERTICAL_SCROLL_AREA);
- write_cmd(start);
- write_cmd(stop);
+#if GDISP_HARDWARE_PIXELREAD
+ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) {
+ return (RAM(g)[g->p.x + (g->p.y>>3)*GDISP_SCREEN_WIDTH] & (1<<(g->p.y&7))) ? White : Black;
}
+#endif
- /** Deactivate the continuous scroll set up with start_horizontal_scroll() or
- * start_vertical_and_horizontal_scroll().
- * @see set_horizontal_scroll, set_vertical_and_horizontal_scroll
- * @notapi
- */
- void gdisp_lld_stop_scroll(void){
- write_cmd(SSD1306_SCROLL_DEACTIVATE);
- }
-#endif // GDISP_NEED_SCROLL
-
-#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__)
- void gdisp_lld_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
- #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
- if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
- if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; }
- if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
- if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
- if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
- #endif
-
- for(int i=x; i<x+cx; i++) {
- for(int j=y; j<y+cy; j++) {
- gdisp_lld_draw_pixel(i,j,color);
- }
- }
- }
-#endif // GDISP_HARDWARE_FILLS
-
-#if (GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL) || defined(__DOXYGEN__)
- /**
- * @brief Driver Control
- * @details Unsupported control codes are ignored.
- * @note The value parameter should always be typecast to (void *).
- * @note There are some predefined and some specific to the low level driver.
- * @note GDISP_CONTROL_POWER - Takes a gdisp_powermode_t
- * GDISP_CONTROL_ORIENTATION - Takes a gdisp_orientation_t
- * GDISP_CONTROL_BACKLIGHT - Takes an int from 0 to 100. For a driver
- * that only supports off/on anything other
- * than zero is on.
- * GDISP_CONTROL_CONTRAST - Takes an int from 0 to 100.
- * GDISP_CONTROL_LLD - Low level driver control constants start at
- * this value.
- *
- * @param[in] what What to do.
- * @param[in] value The value to use (always cast to a void *).
- *
- * @notapi
- */
- void gdisp_lld_control(unsigned what, void *value) {
- switch(what) {
+#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
+ LLDSPEC void gdisp_lld_control(GDisplay *g) {
+ switch(g->p.x) {
case GDISP_CONTROL_POWER:
- if (GDISP.Powermode == (gdisp_powermode_t)value)
+ if (g->g.Powermode == (powermode_t)g->p.ptr)
return;
- switch((gdisp_powermode_t)value) {
+ switch((powermode_t)g->p.ptr) {
case powerOff:
- display_off();
case powerSleep:
- display_off();
case powerDeepSleep:
- display_off();
+ acquire_bus(g);
+ write_cmd(g, SSD1306_DISPLAYOFF);
+ release_bus(g);
+ break;
case powerOn:
- display_on();
+ acquire_bus(g);
+ write_cmd(g, SSD1306_DISPLAYON);
+ release_bus(g);
default:
return;
}
- GDISP.Powermode = (gdisp_powermode_t)value;
+ g->g.Powermode = (powermode_t)g->p.ptr;
return;
+
case GDISP_CONTROL_ORIENTATION:
- if (GDISP.Orientation == (gdisp_orientation_t)value)
- return;
- switch((gdisp_orientation_t)value) {
- case GDISP_ROTATE_0:
- flip_display(0);
- GDISP.Height = GDISP_SCREEN_HEIGHT;
- GDISP.Width = GDISP_SCREEN_WIDTH;
- break;
- case GDISP_ROTATE_180:
- flip_display(1);
- GDISP.Height = GDISP_SCREEN_HEIGHT;
- GDISP.Width = GDISP_SCREEN_WIDTH;
- break;
- default:
- return;
- }
- #if GDISP_NEED_CLIP || GDISP_NEED_VALIDATION
- GDISP.clipx0 = 0;
- GDISP.clipy0 = 0;
- GDISP.clipx1 = GDISP.Width;
- GDISP.clipy1 = GDISP.Height;
- #endif
- GDISP.Orientation = (gdisp_orientation_t)value;
+ if (g->g.Orientation == (orientation_t)g->p.ptr)
return;
- case GDISP_CONTROL_CONTRAST:
- if ((unsigned)value > 100)
- value = (void *)100;
- if (GDISP.Contrast == (uint8_t)((float)((uint8_t)value) * 256.0/100.0) )
- return;
- set_contrast((uint8_t)((float)((uint8_t)value) * 256.0/100.0) );
- GDISP.Contrast = (unsigned)value;
+ switch((orientation_t)g->p.ptr) {
+ case GDISP_ROTATE_0:
+ acquire_bus(g);
+ write_cmd(g, SSD1306_COMSCANDEC);
+ write_cmd(g, SSD1306_SEGREMAP+1);
+ GDISP.Height = GDISP_SCREEN_HEIGHT;
+ GDISP.Width = GDISP_SCREEN_WIDTH;
+ release_bus(g);
+ break;
+ case GDISP_ROTATE_180:
+ acquire_bus(g);
+ write_cmd(g, SSD1306_COMSCANINC);
+ write_cmd(g, SSD1306_SEGREMAP);
+ GDISP.Height = GDISP_SCREEN_HEIGHT;
+ GDISP.Width = GDISP_SCREEN_WIDTH;
+ release_bus(g);
+ break;
+ default:
return;
+ }
+ g->g.Orientation = (orientation_t)value;
+ return;
+
+ case GDISP_CONTROL_CONTRAST:
+ if ((unsigned)g->p.ptr > 100)
+ g->p.ptr = (void *)100;
+ acquire_bus(g);
+ write_cmd2(g, SSD1306_SETCONTRAST, (((uint16_t)value)<<8)/101);
+ release_bus(g);
+ g->g.Contrast = (unsigned)g->p.ptr;
+ return;
+
+ // Our own special controller code to inverse the display
+ // 0 = normal, 1 = inverse
+ case GDISP_CONTROL_INVERT:
+ acquire_bus(g);
+ write_cmd(g, g->p.ptr ? SSD1306_INVERTDISPLAY : SSD1306_NORMALDISPLAY);
+ release_bus(g);
+ return;
}
}
#endif // GDISP_NEED_CONTROL
-/**
- * Let the display blink several times by means of invert and invert back.
- * @param num number of blink cycles to do
- * @param speed milliseconds to wait between toggling inversion
- * @param wait milliseconds to wait before start of all blink cycles and after finishing blink cycles
- * @notapi
- */
- void gdisp_lld_display_blink(uint8_t num, uint16_t speed, uint16_t wait){
- uint8_t inv = 0;
-
- gfxSleepMilliseconds(wait);
- for(int i=0; i<2*num; i++) {
- inv ^= 1;
- invert_display(inv);
- gfxSleepMilliseconds(speed);
- }
- gfxSleepMilliseconds(wait);
-}
-
#endif // GFX_USE_GDISP
-/** @} */
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