/**************************************************************************//**
* @brief TFT initialize or reinitialize to Address Mapped Mode
* Assumes EBI has been configured correctly in BSP_Init()
*
* @return true if we should redraw into buffer, false if BC has control
* over display
*****************************************************************************/
bool TFT_AddressMappedInit(void)
{
bool ret;
EMSTATUS status;
/* If we are in BC_UIF_AEM_EFM state, we can redraw graphics */
if (BSP_RegisterRead(BC_AEMSTATE) == 1)
{
/* If we're not BC_ARB_CTRL_EBI state, we need to reconfigure display controller */
if ((BSP_RegisterRead(BC_BUS_CFG) == BC_BUS_CFG_FSMC) || runOnce)
{
/* Initialize graphics - abort on failure */
status = DMDIF_init(BC_SSD2119_BASE, BC_SSD2119_BASE + 2);
if (status == DMD_OK) status = DMD_init(0);
if ((status != DMD_OK) && (status != DMD_ERROR_DRIVER_ALREADY_INITIALIZED)) while (1) ;
/* Make sure display is configured with correct rotation */
if ((status == DMD_OK)) DMD_flipDisplay(1, 1);
runOnce = false;
}
ret = true;
}
else
{
ret = false;
}
return ret;
}
/**************************************************************************//**
* @brief Intializes TFT serial output
*****************************************************************************/
void RETARGET_SerialInit(void)
{
int x, y;
volatile int i;
EMSTATUS status;
/* Initialize color for font */
/* Use \b for red text (bell/warning) */
rgbColor[0] = 0xff;
rgbColor[1] = 0xff;
rgbColor[2] = 0xff;
/* Character buffer */
if (bufferReset)
{
/* Clear character buffer */
for (y = 0; y < LINES; y++)
{
for (x = 0; x < CHARS; x++)
{
charBuffer[y][x] = 0;
}
}
/* Set cursor position to upper left */
xpos = 0;
ypos = 0;
}
/* Display controller */
if (tftReset)
{
/* Configure for EBI mode and reset display */
BSP_DisplayControl(BSP_Display_EBI);
BSP_DisplayControl(BSP_Display_ResetAssert);
BSP_DisplayControl(BSP_Display_PowerDisable);
/* Short delay */
for (i = 0; i < 10000; i++) ;
/* Configure display for Direct Drive + SPI mode */
BSP_DisplayControl(BSP_Display_Mode8080);
BSP_DisplayControl(BSP_Display_PowerEnable);
BSP_DisplayControl(BSP_Display_ResetRelease);
/* Initialize graphics - abort on failure */
status = DMDIF_init(BC_SSD2119_BASE, BC_SSD2119_BASE + 2);
if (status == DMD_OK) status = DMD_init(0);
if ((status != DMD_OK) && (status != DMD_ERROR_DRIVER_ALREADY_INITIALIZED)) while (1) ;
/* Make sure display is configured with correct rotation */
if ((status == DMD_OK)) status = DMD_flipDisplay(1, 1);
#if !defined(__CROSSWORKS_ARM) && defined(__GNUC__)
setvbuf(stdout, NULL, _IONBF, 0); /*Set unbuffered mode for stdout (newlib)*/
#endif
}
initialized = true;
}
/**************************************************************************//**
* @brief TFT initialize or reinitialize to Address Mapped Mode
* Assumes EBI has been configured correctly in BSP_Init(BSP_INIT_DK_EBI)
*
* @return true if we should redraw into buffer, false if BC has control
* over display
*****************************************************************************/
bool TFT_AddressMappedInit(void)
{
bool ret;
EMSTATUS status;
uint32_t i, freq;
/* If we are in BC_UIF_AEM_EFM state, we can redraw graphics */
if (BSP_RegisterRead(&BC_REGISTER->UIF_AEM) == BC_UIF_AEM_EFM)
{
/* If we're not BC_ARB_CTRL_EBI state, we need to reconfigure display controller */
if ((BSP_RegisterRead(&BC_REGISTER->ARB_CTRL) != BC_ARB_CTRL_EBI) || runOnce)
{
/* Configure for EBI mode and reset display */
BSP_DisplayControl(BSP_Display_EBI);
BSP_DisplayControl(BSP_Display_ResetAssert);
BSP_DisplayControl(BSP_Display_PowerDisable);
/* Short reset delay */
freq = SystemCoreClockGet();
for (i = 0; i < (freq / 100); i++)
{
__NOP();
}
/* Configure display for Direct Drive + SPI mode */
BSP_DisplayControl(BSP_Display_Mode8080);
BSP_DisplayControl(BSP_Display_PowerEnable);
BSP_DisplayControl(BSP_Display_ResetRelease);
/* Initialize graphics - abort on failure */
status = DMDIF_init(BC_SSD2119_BASE, BC_SSD2119_BASE + 2);
if (status == DMD_OK) status = DMD_init(0);
if ((status != DMD_OK) && (status != DMD_ERROR_DRIVER_ALREADY_INITIALIZED)) while (1) ;
/* Make sure display is configured with correct rotation */
if ((status == DMD_OK)) DMD_flipDisplay(1, 1);
runOnce = false;
}
ret = true;
}
else
{
ret = false;
}
return ret;
}
