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SSD2119: backlight control

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- Backlight uses PWM on TIM4 CH2.
- Updated readme.
- Updated gdisp_lld.c: moved from lld_gdisp_* to gdisp_lld_* functions
  names format.
- One forgotten GDISP_LLD() macro removal.
- General code cleanup (make diff with -w parameter ;))
This commit is contained in:
Mateusz Tomaszkiewicz 2013-02-21 22:46:47 +01:00
parent d9a92aa30c
commit cec4628a97
6 changed files with 1123 additions and 1096 deletions
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68
drivers/gdisp/SSD2119/gdisp_lld.c
View file

@ -80,22 +80,22 @@ static __inline void set_cursor(coord_t x, coord_t y) {
* Use a bit mask to make sure they are not set too high
*/
switch(GDISP.Orientation) {
case GDISP_ROTATE_180:
write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - 1 - x) & 0x01FF);
write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - 1 - y) & 0x00FF);
break;
case GDISP_ROTATE_0:
write_reg(SSD2119_REG_X_RAM_ADDR, x & 0x01FF);
write_reg(SSD2119_REG_Y_RAM_ADDR, y & 0x00FF);
break;
case GDISP_ROTATE_270:
write_reg(SSD2119_REG_X_RAM_ADDR, y & 0x01FF);
write_reg(SSD2119_REG_Y_RAM_ADDR, x & 0x00FF);
break;
case GDISP_ROTATE_90:
write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF);
write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF);
break;
case GDISP_ROTATE_180:
write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - 1 - x) & 0x01FF);
write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - 1 - y) & 0x00FF);
break;
case GDISP_ROTATE_270:
write_reg(SSD2119_REG_X_RAM_ADDR, y & 0x01FF);
write_reg(SSD2119_REG_Y_RAM_ADDR, x & 0x00FF);
break;
}
}
@ -117,20 +117,20 @@ static void set_viewport(coord_t x, coord_t y, coord_t cx, coord_t cy) {
write_reg(SSD2119_REG_H_RAM_START, (x & 0x01FF));
write_reg(SSD2119_REG_H_RAM_END, (x + cx - 1) & 0x01FF);
break;
case GDISP_ROTATE_270:
write_reg(SSD2119_REG_V_RAM_POS, (((y + cy - 1) << 8) & 0xFF00 ) | (x & 0x00FF));
write_reg(SSD2119_REG_H_RAM_START, (y & 0x01FF));
write_reg(SSD2119_REG_H_RAM_END, (y + cy - 1) & 0x01FF);
case GDISP_ROTATE_90:
write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (x + cx)) & 0x00FF));
write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (y + cy)) & 0x01FF);
write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF);
break;
case GDISP_ROTATE_180:
write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - y - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (y + cy)) & 0x00FF));
write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (x + cx)) & 0x01FF);
write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - x - 1) & 0x01FF);
break;
case GDISP_ROTATE_90:
write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (x + cx)) & 0x00FF));
write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (y + cy)) & 0x01FF);
write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF);
case GDISP_ROTATE_270:
write_reg(SSD2119_REG_V_RAM_POS, (((y + cy - 1) << 8) & 0xFF00 ) | (x & 0x00FF));
write_reg(SSD2119_REG_H_RAM_START, (y & 0x01FF));
write_reg(SSD2119_REG_H_RAM_END, (y + cy - 1) & 0x01FF);
break;
}
@ -160,7 +160,7 @@ static __inline void reset_viewport(void) {
*
* @notapi
*/
bool_t lld_gdisp_init(void) {
bool_t gdisp_lld_init(void) {
/* Initialise your display */
init_board();
@ -259,7 +259,7 @@ bool_t lld_gdisp_init(void) {
// Release the bus
release_bus();
/* Turn on the back-light */
/* Turn on the backlight */
set_backlight(GDISP_INITIAL_BACKLIGHT);
/* Initialise the GDISP structure */
@ -287,7 +287,7 @@ bool_t lld_gdisp_init(void) {
*
* @notapi
*/
void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
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
@ -324,7 +324,7 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
*
* @notapi
*/
void lld_gdisp_clear(color_t color) {
void gdisp_lld_clear(color_t color) {
unsigned i;
acquire_bus();
@ -349,7 +349,7 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
*
* @notapi
*/
void lld_gdisp_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
void gdisp_lld_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
unsigned i, area;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
@ -385,7 +385,7 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
*
* @notapi
*/
void lld_gdisp_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) {
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;
unsigned lg;
@ -424,7 +424,7 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
*
* @notapi
*/
color_t lld_gdisp_get_pixel_color(coord_t x, coord_t y) {
color_t gdisp_lld_get_pixel_color(coord_t x, coord_t y) {
color_t color;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
@ -533,7 +533,7 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
*
* @notapi
*/
void lld_gdisp_control(unsigned what, void *value) {
void gdisp_lld_control(unsigned what, void *value) {
switch(what) {
case GDISP_CONTROL_POWER:
if (GDISP.Powermode == (gdisp_powermode_t)value)
@ -541,10 +541,11 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
switch((gdisp_powermode_t)value) {
case powerOff:
acquire_bus();
write_reg(0x0010, 0x0000); // leave sleep mode
write_reg(0x0007, 0x0000); // halt operation
write_reg(0x0000, 0x0000); // turn off oszillator
write_reg(0x0010, 0x0001); // enter sleepmode
write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0001); // enter sleep mode
write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0000); // halt operation
write_reg(SSD2119_REG_OSC_START, 0x0000); // turn off oszcillator
set_backlight(0);
delayms(500);
release_bus();
break;
case powerOn:
@ -552,7 +553,8 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
write_reg(0x0010, 0x0000); // leave sleep mode
release_bus();
if (GDISP.Powermode != powerSleep)
GDISP_LLD(init)();
gdisp_lld_init();
set_backlight(100);
break;
case powerSleep:
acquire_bus();
@ -615,8 +617,14 @@ void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) {
#endif
GDISP.Orientation = (gdisp_orientation_t)value;
return;
/*
case GDISP_CONTROL_BACKLIGHT:
if ((unsigned)value > 100) {
value = (void *) 100;
}
set_backlight((unsigned)value);
GDISP.Backlight = (unsigned)value;
break;
/*
case GDISP_CONTROL_CONTRAST:
*/
}

11
drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
View file

@ -84,9 +84,11 @@ static __inline void init_board(void) {
CLR_CS;
//SET_RST;
/* Display backlight always on */
palSetPadMode(GPIOD, 13, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOD, 13);
/* Display backlight control */
/* TIM4 is an alternate function 2 (AF2) */
pwmStart(&PWMD4, &pwmcfg);
palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
pwmEnableChannel(&PWMD4, 1, 100);
}
/**
@ -112,8 +114,7 @@ static __inline void setpin_reset(bool_t state) {
* @notapi
*/
static __inline void set_backlight(uint8_t percent) {
(void) percent;
/* Nothing to do here - Backlight always on */
pwmEnableChannel(&PWMD4, 1, percent);
}
/**

27
drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h
View file

@ -36,6 +36,21 @@
#define SET_RST palSetPad(GPIOD, 3);
#define CLR_RST palClearPad(GPIOD, 3);
/* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
static const PWMConfig pwmcfg = {
100000, /* 100kHz PWM clock frequency. */
100, /* PWM period is 128 cycles. */
NULL,
{
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL}
},
/* HW dependent part.*/
0
};
/**
* @brief Initialise the board for the display.
* @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins
@ -70,12 +85,11 @@ static __inline void init_board(void) {
* This is actually not needed as already set by default after reset */
FSMC_Bank1->BTCR[FSMC_Bank] = FSMC_BCR1_MWID_0 | FSMC_BCR1_WREN | FSMC_BCR1_MBKEN;
/* Display backlight always on */
palSetPadMode(GPIOD, 13, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOD, 13);
/* Display backlight control */
/* TIM4 is an alternate function 2 (AF2) */
//palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
pwmStart(&PWMD4, &pwmcfg);
palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
pwmEnableChannel(&PWMD4, 1, 100);
}
/**
@ -101,8 +115,7 @@ static __inline void setpin_reset(bool_t state) {
* @notapi
*/
static __inline void set_backlight(uint8_t percent) {
(void) percent;
/* Nothing to do here - Backlight always on */
pwmEnableChannel(&PWMD4, 1, percent);
}
/**

5
drivers/gdisp/SSD2119/readme.txt
View file

@ -1,3 +1,7 @@
Description:
Driver for LCD with 16-bit interface in 8080 mode (65k colors).
To use this driver:
1. Add in your halconf.h:
@ -11,6 +15,7 @@ To use this driver:
Currently known boards are:
BOARD_EMBEST_DMSTF4BB - GPIO interface
BOARD_EMBEST_DMSTF4BB_FSMC - FSMC interface
Both board configurations assume you have STM32_PWM_USE_TIM4 set to TRUE in your mcuconf.h.
d) The following are optional - define them if you are not using the defaults below:
#define GDISP_SCREEN_WIDTH 320