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Update example. out of range err add

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This commit is contained in:
lilian 2016-12-13 08:14:49 +01:00
parent e5223d6e84
commit ce9452afff
3 changed files with 27 additions and 21 deletions
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23
extras/ssd1306/ssd1306.c
View file

@ -879,13 +879,14 @@ int ssd1306_fill_triangle(const ssd1306_t *dev, uint8_t *fb, int16_t x0,
return 0;
}
uint8_t ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb,
int ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb,
const font_info_t *font, uint8_t x, uint8_t y, char c,
ssd1306_color_t foreground, ssd1306_color_t background)
{
uint8_t i, j;
const uint8_t *bitmap;
uint8_t line = 0;
int err;
if (font == NULL)
return 0;
@ -901,7 +902,7 @@ uint8_t ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb,
line = bitmap[(d->width + 7) / 8 * j + i / 8]; // line data
}
if (line & 0x80) {
ssd1306_draw_pixel(dev, fb, x + i, y + j, foreground);
err = ssd1306_draw_pixel(dev, fb, x + i, y + j, foreground);
}
else {
switch (background)
@ -911,34 +912,38 @@ uint8_t ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb,
break;
case OLED_COLOR_WHITE:
case OLED_COLOR_BLACK:
ssd1306_draw_pixel(dev, fb, x + i, y + j, background);
err = ssd1306_draw_pixel(dev, fb, x + i, y + j, background);
break;
case OLED_COLOR_INVERT:
// I don't know why I need invert background
break;
}
}
if (err) return -ERANGE ;
line = line << 1;
}
}
return d->width;
}
uint8_t ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb,
int ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb,
const font_info_t *font, uint8_t x, uint8_t y, char *str,
ssd1306_color_t foreground, ssd1306_color_t background)
{
uint8_t t = x;
int err;
if (font == NULL || str == NULL)
return 0;
while (*str)
{
x += ssd1306_draw_char(dev, fb, font, x, y, *str, foreground, background);
++str;
if (*str)
x += font->c;
if ((err = ssd1306_draw_char(dev, fb, font, x, y, *str, foreground, background)) < 0 )
return err;
x += err;
++str;
if (*str)
x += font->c;
}
return x - t;
}
@ -974,7 +979,7 @@ int ssd1306_start_scroll_hori(const ssd1306_t *dev, bool way, uint8_t start, uin
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)
int ssd1306_start_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))

10
extras/ssd1306/ssd1306.h
View file

@ -442,9 +442,9 @@ int ssd1306_fill_triangle(const ssd1306_t *dev, uint8_t *fb, int16_t x0, int16_t
* @param c The character to draw
* @param foreground Character color
* @param background Background color
* @return Width of the character
* @return Width of the character or negative value if error occured
*/
uint8_t ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, char c, ssd1306_color_t foreground, ssd1306_color_t background);
int ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, char c, ssd1306_color_t foreground, ssd1306_color_t background);
/**
* Draw one character using currently selected font
@ -456,9 +456,9 @@ uint8_t ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb, const font_info_t *
* @param str The string to draw
* @param foreground Character color
* @param background Background color
* @return Width of the string (out-of-display pixels also included)
* @return Width of the string (out-of-display pixels also included) or negative value if error occured
*/
uint8_t ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, char *str, ssd1306_color_t foreground, ssd1306_color_t background);
int ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, char *str, ssd1306_color_t foreground, ssd1306_color_t background);
/**
* Stop scrolling (the ram data needs to be rewritten)
@ -488,7 +488,7 @@ int ssd1306_start_scroll_hori(const ssd1306_t *dev, bool way, uint8_t start, uin
* @param frame Time interval between each scroll
* @return Non-zero if error occured
*/
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);
int ssd1306_start_scroll_hori_vert(const ssd1306_t *dev, bool way, uint8_t start, uint8_t stop, uint8_t dy, ssd1306_scroll_t frame);
#ifdef __cplusplus
extern "C"