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drivers/lcd/max7219.c: Add support for MAX7219 vertically organized display.

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This commit is contained in:
Alan Carvalho de Assis 2017-11-07 13:18:22 -06:00 • committed by Gregory Nutt
parent b076ff36cb
commit 7c5f329294
1 changed files with 15 additions and 8 deletions
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23
drivers/lcd/max7219.c
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@ -96,12 +96,6 @@
# define CONFIG_MAX7219_NVERTICALBLKS 1
#endif
/* Current driver is not prepared for multiples rows of LED Matrix */
#if CONFIG_MAX7219_NVERTICALBLKS > 1
# error "This driver doesn't support yet blocks in the vertical!"
#endif
#if CONFIG_LCD_MAXCONTRAST > 15
# undef CONFIG_LCD_MAXCONTRAST
# define CONFIG_LCD_MAXCONTRAST 15
@ -433,6 +427,7 @@ static int max7219_putrun(fb_coord_t row, fb_coord_t col,
uint8_t usrmask;
int i;
int pixlen;
int newrow;
ginfo("row: %d col: %d npixels: %d\n", row, col, npixels);
DEBUGASSERT(buffer);
@ -452,6 +447,18 @@ static int max7219_putrun(fb_coord_t row, fb_coord_t col,
return OK;
}
/* Get real row position in the strip */
newrow = (int) (row % 8);
/* Divide row by 8 */
row = (row >> 3);
col = col + (row * MAX7219_XRES);
row = newrow;
#ifdef CONFIG_NX_PACKEDMSFIRST
usrmask = MS_BIT;
#else
@ -464,7 +471,7 @@ static int max7219_putrun(fb_coord_t row, fb_coord_t col,
usrmask = LS_BIT;
#endif
fbptr = &priv->fb[row * MAX7219_XSTRIDE];
fbptr = &priv->fb[row * MAX7219_XSTRIDE * MAX7219_YSTRIDE];
ptr = fbptr + (col >> 3);
for (i = 0; i < pixlen; i++)
@ -507,7 +514,7 @@ static int max7219_putrun(fb_coord_t row, fb_coord_t col,
/* We need to send last row/column first to avoid mirror image */
for (i = MAX7219_XSTRIDE; i >= 0; i--)
for (i = (MAX7219_XSTRIDE * MAX7219_YSTRIDE) - 1; i >= 0; i--)
{
/* Setup the row data */