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MIO183QT-9A LCD driver updated to support reading from the LCD. From Toby Duckwork

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This commit is contained in:
Gregory Nutt
2014-04-16 12:17:35 -06:00
parent dc3ef08a66
commit f58767ce79
3 changed files with 32 additions and 12 deletions
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drivers/lcd/mio283qt9a.c
+26 -10
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@@ -286,18 +286,32 @@ static uint16_t mio283qt9a_readreg(FAR struct mio283qt9a_lcd_s *lcd, uint8_t reg
#endif
/**************************************************************************************
* Name: mio283qt9a_gramselect
* Name: mio283qt9a_gramselect_write
*
* Description:
* Setup to read or write multiple pixels to the GRAM memory
* Setup to write multiple pixels to the GRAM memory
*
**************************************************************************************/
static inline void mio283qt9a_gramselect(FAR struct mio283qt9a_lcd_s *lcd)
static inline void mio283qt9a_gramselect_write(FAR struct mio283qt9a_lcd_s *lcd)
{
lcd->index(lcd, 0x2c);
}
/**************************************************************************************
* Name: mio283qt9a_gramselect_read
*
* Description:
* Setup to read multiple pixels to the GRAM memory
*
**************************************************************************************/
static inline void mio283qt9a_gramselect_read(FAR struct mio283qt9a_lcd_s *lcd)
{
lcd->index(lcd, 0x2e);
lcd->readgram(lcd);
}
/**************************************************************************************
* Name: mio283qt9a_gramwrite
*
@@ -352,7 +366,7 @@ static inline uint16_t mio283qt9a_gramread(FAR struct mio283qt9a_lcd_s *lcd,
{
/* Read the value (GRAM register already selected) */
return lcd->read(lcd);
return lcd->readgram(lcd);
}
#endif
@@ -446,7 +460,7 @@ static int mio283qt9a_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *
/* Write the run to GRAM. */
mio283qt9a_setarea(lcd, col, row, col + npixels - 1, row);
mio283qt9a_gramselect(lcd);
mio283qt9a_gramselect_write(lcd);
for (i = 0; i < npixels; i++)
{
@@ -481,12 +495,12 @@ static int mio283qt9a_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer
FAR struct mio283qt9a_dev_s *priv = &g_lcddev;
FAR struct mio283qt9a_lcd_s *lcd = priv->lcd;
FAR uint16_t *dest = (FAR uint16_t*)buffer;
uint16_t accum;
uint16_t accum, test;
int i;
/* Buffer must be provided and aligned to a 16-bit address boundary */
lcdvdbg("row: %d col: %d npixels: %d\n", row, col, npixels);
lcdvdbg("mio283qt9a_getrun row: %d col: %d npixels: %d\n", row, col, npixels);
DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0);
/* Read the run from GRAM. */
@@ -498,7 +512,7 @@ static int mio283qt9a_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer
/* Red the run fram GRAM. */
mio283qt9a_setarea(lcd, col, row, col + npixels - 1, row);
mio283qt9a_gramselect(lcd);
mio283qt9a_gramselect_read(lcd);
/* Prime the pump for unaligned read data */
@@ -506,7 +520,9 @@ static int mio283qt9a_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer
for (i = 0; i < npixels; i++)
{
*dest++ = mio283qt9a_gramread(lcd, &accum);
test= mio283qt9a_gramread(lcd, &accum);
// lcddbg("read 0x%04x\n", test);
*dest++ = test;
}
/* De-select the LCD */
@@ -891,7 +907,7 @@ void mio283qt9a_clear(FAR struct lcd_dev_s *dev, uint16_t color)
/* Prepare to write GRAM data */
mio283qt9a_gramselect(lcd);
mio283qt9a_gramselect_write(lcd);
/* Copy color into all of GRAM. Orientation does not matter in this case. */