j3d1/esp-open-rtos
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Scrolling added

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This commit is contained in:
lilian 2016-12-12 09:49:08 +01:00
parent 02da6d83a7
commit ccf1ef18d2
2 changed files with 121 additions and 0 deletions
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74
extras/ssd1306/ssd1306.c
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@ -63,6 +63,13 @@
#define SSD1306_CHARGE_PUMP_EN (0x14)
#define SSD1306_CHARGE_PUMP_DIS (0x10)
#define SSD1306_SCROL_HOR_LEFT (0x27)
#define SSD1306_SCROL_HOR_RIGHT (0x26)
#define SSD1306_SCROL_HOR_VER_LEFT (0x2A)
#define SSD1306_SCROL_HOR_VER_RIGHT (0x29)
#define SSD1306_SCROL_ENABLE (0x2F)
#define SSD1306_SCROL_DISABLE (0x2E)
#ifdef SSD1306_DEBUG
#define debug(fmt, ...) printf("%s: " fmt "\n", "SSD1306", ## __VA_ARGS__)
#else
@ -935,3 +942,70 @@ uint8_t ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb,
}
return x - t;
}
int ssd1306_stop_scroll(const ssd1306_t *dev)
{
return ssd1306_command(dev, SSD1306_SCROL_DISABLE);
}
int ssd1306_start_scroll_hori(const ssd1306_t *dev, bool way, uint8_t start, uint8_t stop, ssd1306_scroll_t frame)
{
int err ;
if (way)
{
if ((err = ssd1306_command(dev, SSD1306_SCROL_HOR_LEFT)))
return err ;
}
else
{
if ((err = ssd1306_command(dev, SSD1306_SCROL_HOR_RIGHT)))
return err ;
}
if (!ssd1306_command(dev, 0x00) && //dummy
!ssd1306_command(dev, (start&0x07)) &&
!ssd1306_command(dev, frame) &&
!ssd1306_command(dev, (stop&0x07)) &&
!ssd1306_command(dev, 0x00) && //dummy
!ssd1306_command(dev, 0xFF) && //dummy
!ssd1306_command(dev, SSD1306_SCROL_ENABLE)) {
return 0;
}
return -EIO;
}
int ssd1306_set_scroll_hori_vert(const ssd1306_t *dev, bool way, uint8_t start, uint8_t stop, uint8_t dy, ssd1306_scroll_t frame)
{
//this function dont work well if no vertical setting.
if ( (!dy) || (dy > 63))
return -EINVAL;
int err ;
//vertical scrolling selection (all screen)
if ((err = ssd1306_command(dev, 0xA3)))
return err ;
if ((err = ssd1306_command(dev, 0)))
return err ;
if ((err = ssd1306_command(dev, dev->height)))
return err ;
if (way)
{
if ((err = ssd1306_command(dev, SSD1306_SCROL_HOR_VER_LEFT)))
return err ;
}
else
{
if ((err = ssd1306_command(dev, SSD1306_SCROL_HOR_VER_RIGHT)))
return err ;
}
if (!ssd1306_command(dev, 0x00) && //dummy
!ssd1306_command(dev, (start&0x07)) &&
!ssd1306_command(dev, frame) &&
!ssd1306_command(dev, (stop&0x07)) &&
!ssd1306_command(dev, dy) &&
!ssd1306_command(dev, SSD1306_SCROL_ENABLE)) {
return 0;
}
return -EIO;
}