diff options
Diffstat (limited to 'drivers/lcd/s6d1121_lld.c')
| -rw-r--r-- | drivers/lcd/s6d1121_lld.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/lcd/s6d1121_lld.c b/drivers/lcd/s6d1121_lld.c index f7268126..2a591ee2 100644 --- a/drivers/lcd/s6d1121_lld.c +++ b/drivers/lcd/s6d1121_lld.c @@ -2,6 +2,8 @@ #ifdef LCD_USE_S6D1121 +static uint16_t buf[((SCREEN_HEIGHT > SCREEN_WIDTH ) ? SCREEN_HEIGHT : SCREEN_WIDTH)]; + #define LCD_RST_LOW palClearPad(LCD_RST_GPIO, LCD_RST_PIN) #define LCD_RST_HIGH palSetPad(LCD_RST_GPIO, LCD_RST_PIN) @@ -238,6 +240,18 @@ __inline void lld_lcdWriteStream(uint16_t *buffer, uint16_t size) { } } +__inline void lld_lcdReadStreamStart(void) { + /* TODO */ +} + +__inline void lld_lcdReadStreamStop(void) { + /* TODO */ +} + +__inline void lld_lcdReadStream(uint16_t *buffer, size_t size) { + /* TODO */ +} + void lld_lcdFillArea(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color) { uint32_t index = 0, area; @@ -350,5 +364,35 @@ uint16_t lld_lcdGetWidth(void) { return lcd_width; } +/* a positive lines value shifts the screen up, negative down */ +/* TODO: test this */ +void lld_lcdVerticalScroll(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, int16_t lines) { + uint16_t row0, row1; + uint16_t i; + lld_lcdSetWindow(x0, y0, x1, y1); + + for(i = 0; i < ((y1-y0) - abs(lines)); i++) { + if(lines > 0) { + row0 = y0 + i + lines; + row1 = y0 + i; + } else { + row0 = (y1 - i - 1) + lines; + row1 = (y1 - i - 1); + } + + /* read row0 into the buffer and then write at row1*/ + lld_lcdSetWindow(x0, row0, x1, row0); + lld_lcdReadStreamStart(); + lld_lcdReadStream(buf, x1-x0); + lld_lcdReadStreamStop(); + + lld_lcdSetWindow(x0, row1, x1, row1); + lld_lcdWriteStreamStart(); + lld_lcdWriteStream(buf, x1-x0); + lld_lcdWriteStreamStop(); + } +} + + #endif |