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Using LTDC_AWCR and LTDC_TWCR

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This commit is contained in:
Romain Goyet
2015-05-09 18:40:54 +02:00
parent 5bbefb89d7
commit 83d422d3d8
2 changed files with 33 additions and 32 deletions
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16
platform/stm32f429/init_lcd.c
View File

@@ -208,15 +208,13 @@ static void init_rgb_timings() {
LTDC_AVBP(lcd_panel_vsync+lcd_panel_vbp-1) |
LTDC_AHBP(lcd_panel_hsync+lcd_panel_hbp-1);
#if 0
/*– Active Width and Active Height: The Active Width and Active Height are configured by
programming the accumulated value HSYNC Width + HBP + Active Width - 1 and the accumulated
value VSYNC Width + VBP + Active Height - 1 in the LTDC_AWCR register (only up to 1024x768 is supported). */
long * LTDC_AWCR = (long *)(LCD_TFT_BASE + 0x10);
set_ltdc_register(LTDC_AWCR,
lcd_panel_hsync+lcd_panel_hbp+lcd_panel_hadr-1,
lcd_panel_vsync+lcd_panel_vbp+lcd_panel_vadr-1);
LTDC_AWCR =
LTDC_AAH(lcd_panel_vsync+lcd_panel_vbp+lcd_panel_vadr-1) |
LTDC_AAW(lcd_panel_hsync+lcd_panel_hbp+lcd_panel_hadr-1);
/*– Total Width: The Total width is configured by programming the accumulated
value HSYNC Width + HBP + Active Width + HFP - 1 in the LTDC_TWCR register.
@@ -225,12 +223,12 @@ static void init_rgb_timings() {
value VSYNC Height + VBP + Active Height + VFP - 1 in the LTDC_TWCR register.
The VFP is the Vertical front porch period
*/
long * LTDC_TWCR = (long *)(LCD_TFT_BASE + 0x14);
set_ltdc_register(LTDC_TWCR,
lcd_panel_hsync+lcd_panel_hbp+lcd_panel_hadr+lcd_panel_hfp-1,
lcd_panel_vsync+lcd_panel_vbp+lcd_panel_vadr+lcd_panel_vfp-1);
LTDC_TWCR =
LTDC_TOTALH(lcd_panel_vsync+lcd_panel_vbp+lcd_panel_vadr+lcd_panel_vfp-1) |
LTDC_TOTALW(lcd_panel_hsync+lcd_panel_hbp+lcd_panel_hadr+lcd_panel_hfp-1);
#if 0
/* STEP 4 : Configure the synchronous signals and clock polarity in the LTDC_GCR register */

49
platform/stm32f429/registers/ltdc.h
View File

@@ -7,48 +7,51 @@
#define LTDC_REGISTER_AT(offset) (*(volatile uint32_t *)(LTDC_BASE+offset))
// LTDC Synchronization size configuration register
// LTDC synchronization size configuration register
#define LTDC_SSCR LTDC_REGISTER_AT(0x08)
#define LOW_BIT_VSH 0
#define HIGH_BIT_VSH 10
#define LTDC_VSH(v) REGISTER_FIELD_VALUE(VSH, v)
#define LOW_BIT_HSW 15
#define LOW_BIT_HSW 16
#define HIGH_BIT_HSW 27
#define LTDC_HSW(v) REGISTER_FIELD_VALUE(HSW, v)
// LTDC Back porch configuration register
// LTDC back porch configuration register
#define LTDC_BPCR LTDC_REGISTER_AT(0x0C)
#define LOW_BIT_AVBP 0
#define HIGH_BIT_AVBP 10
#define LTDC_AVBP(v) REGISTER_FIELD_VALUE(AVBP, v)
#define LOW_BIT_AHBP 15
#define LOW_BIT_AHBP 16
#define HIGH_BIT_AHBP 27
#define LTDC_AHBP(v) REGISTER_FIELD_VALUE(AHBP, v)
// LTDC active width configuration register
#define LTDC_AWCR LTDC_REGISTER_AT(0x10)
#define LOW_BIT_AAH 0
#define HIGH_BIT_AAH 10
#define LTDC_AAH(v) REGISTER_FIELD_VALUE(AAH, v)
#define LOW_BIT_AAW 16
#define HIGH_BIT_AAW 27
#define LTDC_AAW(v) REGISTER_FIELD_VALUE(AAW, v)
// LTDC total width configuration register
#define LTDC_TWCR LTDC_REGISTER_AT(0x14)
#define LOW_BIT_TOTALH 0
#define HIGH_BIT_TOTALH 10
#define LTDC_TOTALH(v) REGISTER_FIELD_VALUE(TOTALH, v)
#define LOW_BIT_TOTALW 16
#define HIGH_BIT_TOTALW 27
#define LTDC_TOTALW(v) REGISTER_FIELD_VALUE(TOTALW, v)
#if 0
extern LTDC_BPCR_t * LTDC_BPCR;
typedef struct {
unsigned int AAH:11;
unsigned int :5;
unsigned int AAW:12;
unsigned int :4;
} LTDC_AWCR_t;
extern LTDC_AWCR_t * LTDC_AWCR;
typedef struct {
unsigned int TOTALH:11;
unsigned int :5;
unsigned int TOTALW:12;
unsigned int :4;
} LTDC_TWCR_t;
extern LTDC_TWCR_t * LTDC_TWCR;
typedef struct {
unsigned int LTDCEN:1;