SSD1963 driver updates originally by steved
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ebf647b63a
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0d90611c82
1 changed files with 99 additions and 86 deletions
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@ -16,7 +16,6 @@
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#define CALC_PERIOD(w,b,f,p) (p+b+w+f)
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#define CALC_FPR(w,h,hb,hf,hp,vb,vf,vp,fps) ((fps * CALC_PERIOD(w,hb,hf,hp) * CALC_PERIOD(h,vb,vf,vp) * 1048576)/100000000)
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typedef struct LCD_Parameters {
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coord_t width, height; // Panel width and height
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uint16_t hbporch; // Horizontal Back Porch
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@ -45,9 +44,6 @@ typedef struct LCD_Parameters {
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/* Set the lcd panel interface type */ // default TFT mode
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#define LCD_PANEL_TYPE_SERIAL_RGB_MODE ((1<<6) << 8) // Serial RGB mode
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#define LCD_PANEL_TYPE_SERIAL_RGB_DUMMY_MODE (((1<<5) | (1<<6)) << 8) // Serial RGB+dummy mode
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} LCD_Parameters;
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#include "board_SSD1963.h"
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@ -56,11 +52,14 @@ typedef struct LCD_Parameters {
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/* Driver local definitions. */
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/*===========================================================================*/
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#ifndef GDISP_SSD1963_NO_INIT
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#define GDISP_SSD1963_NO_INIT FALSE
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 50
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#endif
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#ifndef GDISP_INITIAL_BACKLIGHT
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#define GDISP_INITIAL_BACKLIGHT 90
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#define GDISP_INITIAL_BACKLIGHT 100
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#endif
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/*===========================================================================*/
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@ -72,9 +71,9 @@ typedef struct LCD_Parameters {
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#define dummy_read(g) { volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
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#define write_reg(g, reg, data) { write_index(g, reg); write_data(g, data); }
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#define write_data16(g, data) { write_data(g, (data)>>8); write_data(g, (data) & 0xFF); }
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#define read_reg(g, reg) { write_index(g, reg); read_data(g); }
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static inline void set_viewport(GDisplay* g) {
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switch(g->g.Orientation) {
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default:
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case GDISP_ROTATE_0:
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@ -114,40 +113,35 @@ static inline void set_viewport(GDisplay* g) {
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write_index(g, SSD1963_WRITE_MEMORY_START);
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break;
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}
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}
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/**
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* The backlight is controlled by the controller.
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* percent - the value 0..100 for brightness (duty cycle)
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*
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* Backlight appears to be forced off (by chip) when display blanked
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*/
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static inline void set_backlight(GDisplay *g, uint8_t percent) {
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//duty_cycle is 00..FF
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//Work in progress: the SSD1963 has a built-in PWM, its output can
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//be used by a Dynamic Background Control or by a host (user)
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//Check your LCD's hardware, the PWM connection is default left open and instead
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//connected to a LED connection on the breakout board
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// The SSD1963 has a built-in PWM (duty_cycle 00..FF).
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// Its output can be used by a Dynamic Background Control or by a host (user)
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// Check your LCD's hardware, the PWM connection is default left open and instead
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// connected to a LED connection on the breakout board
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write_index(g, SSD1963_SET_PWM_CONF); //set PWM for BackLight
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write_data(g, 4); // PWMF[7:0] = 4,
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// PWM signal frequency = PLL clock / (256 * (PWMF[7:0] + 1)) / 256
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// = aprox 366Hz for a PLL freq = 120MHz
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if ( percent==0xFF ) // use percent==0xFF to turn off SSD1963 pwm in power SLEEP or DEEP SLEEP mode
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write_data(g, 0x01);
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// write_data(g, 0x0E); // PWMF[7:0] = 2, PWM base freq = PLL/(256*(1+5))/256 = 300Hz for a PLL freq = 120MHz (source: Displaytech)
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if (percent == 0xFF) // use percent==0xFF to turn off SSD1963 pwm in power SLEEP or DEEP SLEEP mode
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write_data(g, 0x00);
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else if (percent >= 100)
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write_data(g, 0x00FF); // Fully on for any percentage >= 100
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else
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write_data(g, (55+percent*2) & 0x00FF);
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write_data(g, 0x01); // controlled by host (not DBC), enabled
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write_data(g, 0x00); // DBC manual brightness; Set the brightness level: 00 Dimmest, FF Brightest
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write_data(g, 0x00); // DBC minimum brightness; Set the minimum brightness level: 00 Dimmest, FF Brightest
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write_data(g, 0x00); // Brightness prescaler of Transition Effect; Set the brightness prescaler: 0 Dimmest, F Brightest
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write_data(g, (percent*255)/100 & 0x00FF);
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write_data(g, 0x01); // Controlled by host (not DBC), enabled
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write_data(g, 0xFF); // DBC manual brightness (not used - zero would work)
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write_data(g, 0x60); // DBC minimum brightness (not used - zero would work)
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write_data(g, 0x0F); // Brightness prescaler - active when Transition Effect enable A5 = 1
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}
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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@ -155,6 +149,13 @@ static inline void set_backlight(GDisplay *g, uint8_t percent) {
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LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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LCD_Parameters * lcdp;
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/*
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* Some displays (e.g. Displaytech) have an on-board setup process which just requires that we don't touch anything for a time after power up.
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* For this type of display define GDISP_SSD1963_NO_INIT as TRUE, and implement an appropriate delay in the board file.
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* With such displays we can skip most of the initialisation. We also skip pulsing the reset pin, since it
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* will introduce an extra second or so of display to the startup time.
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*/
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// The private area for this controller is the LCD timings
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lcdp = (void *)&DisplayTimings[g->controllerdisplay];
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g->priv = lcdp;
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@ -162,68 +163,79 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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// Initialise the board interface
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init_board(g);
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// Hardware reset
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setpin_reset(g, TRUE);
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gfxSleepMilliseconds(20);
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setpin_reset(g, FALSE);
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gfxSleepMilliseconds(20);
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#if !GDISP_SSD1963_NO_INIT
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// Hardware reset
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setpin_reset(g, TRUE);
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gfxSleepMilliseconds(20);
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setpin_reset(g, FALSE);
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gfxSleepMilliseconds(20);
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#endif
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// Get the bus for the following initialisation commands
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acquire_bus(g);
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write_index(g, SSD1963_SOFT_RESET);
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gfxSleepMilliseconds(5);
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/* Driver PLL config */
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write_index(g, SSD1963_SET_PLL_MN);
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write_data(g, 35); // PLLclk = REFclk (10Mhz) * 36 (360Mhz)
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write_data(g, 2); // SYSclk = PLLclk / 3 (120MHz)
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write_data(g, 4); // Apply calculation bit, else it is ignored
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write_reg(g, SSD1963_SET_PLL, 0x01); // Enable PLL
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gfxSleepMilliseconds(5);
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write_reg(g, SSD1963_SET_PLL, 0x03); // Use PLL
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gfxSleepMilliseconds(5);
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write_index(g, SSD1963_SOFT_RESET);
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gfxSleepMilliseconds(5);
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#if !GDISP_SSD1963_NO_INIT
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write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
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gfxSleepMilliseconds(5);
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/* LCD panel parameters */
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write_index(g, SSD1963_SET_GDISP_MODE);
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write_data(g, lcdp->flags & 0xFF);
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write_data(g, (lcdp->flags >> 8) & 0xFF);
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write_data16(g, lcdp->width-1);
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write_data16(g, lcdp->height-1);
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write_data(g, 0x00); // RGB
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/* Driver PLL config */
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write_index(g, SSD1963_SET_PLL_MN);
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write_data(g, 35); // PLLclk = REFclk (10Mhz) * 36 (360Mhz)
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write_data(g, 2); // SYSclk = PLLclk / 3 (120MHz)
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write_data(g, 4); // Apply calculation bit, else it is ignored
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write_reg(g, SSD1963_SET_PLL, 0x01); // Enable PLL
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gfxSleepMilliseconds(5);
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write_reg(g, SSD1963_SET_PLL, 0x03); // Use PLL
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gfxSleepMilliseconds(5);
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write_index(g, SSD1963_SOFT_RESET); // Software reset - clears almost everything (apart from PLL)
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gfxSleepMilliseconds(5);
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/* LCD panel parameters */
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write_index(g, SSD1963_SET_GDISP_MODE);
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write_data(g, lcdp->flags & 0xFF);
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write_data(g, (lcdp->flags >> 8) & 0xFF);
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//** write_data(g, 0x18); //Enabled dithering
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//** write_data(g, 0x00);
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write_data16(g, lcdp->width-1);
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write_data16(g, lcdp->height-1);
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write_data(g, 0x00); // RGB - line sequences for serial TFT
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#endif
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// From Displaytech example - for larger horizontal resolutions - not sure if display-specific
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if (lcdp->width >= 640)
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write_reg(g, SSD1963_SET_ADDRESS_MODE, 2); // Flip horizontal direction
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write_reg(g, SSD1963_SET_PIXEL_DATA_INTERFACE, SSD1963_PDI_16BIT565);
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/* LCD Clock specs */
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write_index(g, SSD1963_SET_LSHIFT_FREQ);
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write_data(g, (lcdp->fpr >> 16) & 0xFF);
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write_data(g, (lcdp->fpr >> 8) & 0xFF);
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write_data(g, lcdp->fpr & 0xFF);
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#if !GDISP_SSD1963_NO_INIT
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/* LCD Clock specs */
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write_index(g, SSD1963_SET_LSHIFT_FREQ);
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write_data(g, (lcdp->fpr >> 16) & 0xFF);
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write_data(g, (lcdp->fpr >> 8) & 0xFF);
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write_data(g, lcdp->fpr & 0xFF);
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write_index(g, SSD1963_SET_HORI_PERIOD);
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write_data16(g, lcdp->hperiod);
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write_data16(g, lcdp->hpulse + lcdp->hbporch);
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write_data(g, lcdp->hpulse);
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write_data(g, 0x00);
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write_data(g, 0x00);
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write_data(g, 0x00);
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write_index(g, SSD1963_SET_HORI_PERIOD);
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write_data16(g, lcdp->hperiod);
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write_data16(g, lcdp->hpulse + lcdp->hbporch);
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write_data(g, lcdp->hpulse);
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write_data(g, 0x00);
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write_data(g, 0x00);
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write_data(g, 0x00);
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write_index(g, SSD1963_SET_VERT_PERIOD);
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write_data16(g, lcdp->vperiod);
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write_data16(g, lcdp->vpulse + lcdp->vbporch);
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write_data(g, lcdp->vpulse);
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write_data(g, 0x00);
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write_data(g, 0x00);
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write_index(g, SSD1963_SET_VERT_PERIOD);
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write_data16(g, lcdp->vperiod);
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write_data16(g, lcdp->vpulse + lcdp->vbporch);
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write_data(g, lcdp->vpulse);
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write_data(g, 0x00);
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write_data(g, 0x00);
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#endif
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/* Tear effect indicator ON. This is used to tell the host MCU when the driver is not refreshing the panel (during front/back porch) */
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write_reg(g, SSD1963_SET_TEAR_ON, 0x00);
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/* Turn on */
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write_index(g, SSD1963_SET_DISPLAY_ON);
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/* Turn on the back-light */
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set_backlight(g, GDISP_INITIAL_BACKLIGHT);
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@ -265,32 +277,33 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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switch((powermode_t)g->p.ptr) {
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case powerOff:
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acquire_bus(g);
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write_index(g, SSD1963_EXIT_SLEEP_MODE);
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gfxSleepMilliseconds(5);
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write_index(g, SSD1963_SET_DISPLAY_OFF);
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write_index(g, SSD1963_SET_DEEP_SLEEP);
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release_bus(g);
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break;
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case powerOn:
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acquire_bus(g);
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dummy_read(g);
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dummy_read(g);
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/* Wait for 1msec to let the PLL stable if was stopped by deep sleep mode */
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gfxSleepMilliseconds(100);
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write_index(g, SSD1963_EXIT_SLEEP_MODE);
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gfxSleepMilliseconds(5);
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/* Restore the back-light */
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set_backlight(g, gdispGGetBacklight(g));
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gfxSleepMilliseconds(100); // Wait for 1msec to let the PLL stable if was stopped by deep sleep mode
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write_index(g, SSD1963_EXIT_SLEEP_MODE); // need this in case we were in 'normal' sleep mode
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gfxSleepMilliseconds(5);
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set_backlight(g, gdispGGetBacklight(g)); // Restore the back-light
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release_bus(g);
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break;
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case powerSleep:
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acquire_bus(g);
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/* Turn off the back-light pwm from SSD1963 */
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set_backlight(g, 0xFF);
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set_backlight(g, 0xFF); // Turn off the back-light pwm from SSD1963
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write_index(g, SSD1963_ENTER_SLEEP_MODE);
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gfxSleepMilliseconds(5);
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release_bus(g);
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break;
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case powerDeepSleep:
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acquire_bus(g);
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/* Turn off the back-light pwm from SSD1963 */
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set_backlight(g, 0xFF);
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set_backlight(g, 0xFF); // Turn off the back-light pwm from SSD1963
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write_index(g, SSD1963_ENTER_SLEEP_MODE);
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write_index(g, SSD1963_SET_DEEP_SLEEP);
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release_bus(g);
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@ -350,7 +363,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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g->g.Backlight = (unsigned)g->p.ptr;
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return;
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//case GDISP_CONTROL_CONTRAST:
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//case GDISP_CONTROL_CONTRAST: - see DDS1963_SET_POST_PROC command - contrast, brightness, saturation
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default:
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return;
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}
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