TFT
Kit Drivers

Detailed Description

Driver for SSD2119 TFT in Direct Drive or Adress Mapped mode.

Functions

void SPI_TFT_Init (void)
Initialize SPI interface to TFT-LCD SSD2119 controller.
void SPI_TFT_WriteRegister (uint8_t reg, uint16_t data)
Write registers to SSD2119 controller.
bool TFT_AddressMappedInit (void)
TFT initialize or reinitialize to Address Mapped Mode Assumes EBI has been configured correctly in BSP_Init(BSP_INIT_DK_EBI)
void TFT_DirectGPIOConfig (void)
GPIO configuration for TFT direct drive.
bool TFT_DirectInit (const EBI_TFTInit_TypeDef *tftInit)
TFT initialization funxction. Assumes EBI has been configured correctly in BSP_Init(BSP_INIT_DK_EBI)

Variables

static const USART_InitSync_TypeDef inittft
static bool runOnce = true
static bool runOnce = true

Function Documentation

void SPI_TFT_Init ( void )

Initialize SPI interface to TFT-LCD SSD2119 controller.

Note
To enable access, be sure to call the function BSP_PeripheralAccess() before using this interface.

Definition at line 69 of file tftspi.c .

References CMU_ClockEnable() , cmuClock_GPIO , cmuClock_HFPER , cmuClock_USART1 , GPIO_PinModeSet() , gpioModeInput , gpioModePushPull , USART_InitSync() , and USART_Reset() .

void SPI_TFT_WriteRegister ( uint8_t reg,
uint16_t data
)

Write registers to SSD2119 controller.

Parameters
[in] reg Register to write to
[in] data 16-bit data to write into register
Note
It is not possible to read back register value through SSD2119 SPI interface.

Definition at line 104 of file tftspi.c .

References GPIO_PinOutClear() , GPIO_PinOutSet() , USART_Rx() , and USART_Tx() .

bool TFT_AddressMappedInit ( void )

TFT initialize or reinitialize to Address Mapped Mode Assumes EBI has been configured correctly in BSP_Init(BSP_INIT_DK_EBI)

Returns
true if we should redraw into buffer, false if BC has control over display

Definition at line 61 of file tftamapped.c .

References BC_ARB_CTRL_EBI , BC_REGISTER , BC_SPI_DEMUX_SLAVE_AUDIO , BC_SPI_DEMUX_SLAVE_DISPLAY , BC_SSD2119_BASE , BC_UIF_AEM_EFM , BSP_Display_EBI , BSP_Display_Mode8080 , BSP_Display_PowerDisable , BSP_Display_PowerEnable , BSP_Display_ResetAssert , BSP_Display_ResetRelease , BSP_DisplayControl() , BSP_RegisterRead() , BSP_RegisterWrite() , runOnce , and SystemCoreClockGet() .

bool TFT_DirectInit ( const EBI_TFTInit_TypeDef * tftInit )

TFT initialization funxction. Assumes EBI has been configured correctly in BSP_Init(BSP_INIT_DK_EBI)

Parameters
[in] tftInit Pointer to EBI TFT initialization structure
Returns
true if we should redraw into buffer, false if BC has control over display

Definition at line 77 of file tftdirect.c .

References BC_ARB_CTRL_EBI , BC_REGISTER , BC_UIF_AEM_EFM , BSP_Display_EBI , BSP_Display_ModeGeneric , BSP_Display_PowerDisable , BSP_Display_PowerEnable , BSP_Display_ResetAssert , BSP_Display_ResetRelease , BSP_DisplayControl() , BSP_PeripheralAccess() , BSP_RegisterRead() , BSP_TFT , runOnce , SystemCoreClockGet() , and TFT_DirectGPIOConfig() .

Variable Documentation

const USART_InitSync_TypeDef inittft
static
Initial value:
= {
usartEnable ,
48000000,
1000000,
usartDatabits9 ,
true ,
true ,
usartClockMode3 ,
false ,
usartPrsRxCh0,
false ,
false
}
usartEnable
Definition: em_usart.h:130
usartClockMode3
Definition: em_usart.h:185
usartDatabits9
Definition: em_usart.h:108

Set default values for tft synchronous mode init structure

Definition at line 50 of file tftspi.c .

bool runOnce = true
static

Flag to indicate that we need to initialize once if starting up in

Definition at line 51 of file tftdirect.c .

Referenced by TFT_DirectInit() .

bool runOnce = true
static

Flag to indicate that we need to initialize once if starting up in

Definition at line 52 of file tftamapped.c .

Referenced by TFT_AddressMappedInit() .