diff options
Diffstat (limited to 'firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c')
| -rw-r--r-- | firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c b/firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c index ed4bcc7be9..a794589647 100644 --- a/firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c +++ b/firmware/target/arm/as3525/sansa-clip/lcd-ssd1303.c @@ -149,6 +149,9 @@ void lcd_set_flip(bool yesno) void lcd_enable(bool enable) { + if(display_on == enable) + return; + if( (display_on = enable) ) /* simple '=' is not a typo ! */ lcd_write_command(LCD_SET_DISPLAY_ON); else @@ -240,6 +243,9 @@ void lcd_init_device(void) void lcd_blit_mono(const unsigned char *data, int x, int by, int width, int bheight, int stride) { + if(!display_on) + return; + /* Copy display bitmap to hardware */ while (bheight--) { @@ -258,6 +264,13 @@ void lcd_blit_mono(const unsigned char *data, int x, int by, int width, void lcd_blit_grey_phase(unsigned char *values, unsigned char *phases, int x, int by, int width, int bheight, int stride) { + /* TODO */ + +#if 0 + if(!display_on) + return; +#endif + (void)values; (void)phases; (void)x; @@ -274,6 +287,9 @@ void lcd_update(void) { int y; + if(!display_on) + return; + /* Copy display bitmap to hardware */ for (y = 0; y < LCD_FBHEIGHT; y++) { @@ -291,6 +307,9 @@ void lcd_update_rect(int x, int y, int width, int height) { int ymax; + if(!display_on) + return; + /* The Y coordinates have to work on even 8 pixel rows */ ymax = (y + height-1) >> 3; y >>= 3; |