Provide stdio retargeting to TFT address mapped mode.

License

Copyright 2018 Silicon Laboratories Inc. www.silabs.com

The licensor of this software is Silicon Laboratories Inc. Your use of this software is governed by the terms of Silicon Labs Master Software License Agreement (MSLA) available at www.silabs.com/about-us/legal/master-software-license-agreement. This software is distributed to you in Source Code format and is governed by the sections of the MSLA applicable to Source Code.

Definition in file retargettft.c .


       #include <stdio.h>


       #include <stdint.h>


       #include "em_device.h"


       #include "
       
        em_cmu.h
       
       "


       #include "
       
        em_ebi.h
       
       "


       #include "
       
        em_gpio.h
       
       "


       #include "dmd/ssd2119/dmd_ssd2119.h"


       #include "
       
        bsp.h
       
       "


       #include "
       
        retargettft.h
       
       "


       #include "
       
        displayfont8x8.h
       
       "

Macros
#define	CHARS 40

#define	fontBits chars_8x8_bits

#define	LINES 30

Functions
int	RETARGET_ReadChar (void)
	Receive a byte No input method from TFT is possible, thus we always return -1.

void	RETARGET_TftCrLf (int on)
	Toggle LF to CRLF conversion.

void	RETARGET_TftInit (void)
	Intializes TFT text display.

void	RETARGET_TFTTX (int c)
	Transmit/display a character.

void	RETARGET_TFTUpdate (bool fullFrame)
	Display framebuffer.

int	RETARGET_WriteChar (char c)
	Transmit single byte to the TFT.

static void	tftTextReset (void)
	Reset TFT text display state.

static void	tftTextScrollUp (void)
	Scroll one line of characters up on the screen.

Variables
static bool	bufferReset = true

static uint8_t	charBuffer [ LINES ][ CHARS ]

static bool	fullUpdate = true

static bool	initialized = false

static bool	LFtoCRLF = 0

static uint8_t	rgbColor [3]

static bool	tftReset = true

static int	xpos

static int	ypos

Macro Definition Documentation

#define CHARS 40

Characters

Definition at line 31 of file retargettft.c .

Referenced by RETARGET_TFTTX() , RETARGET_TFTUpdate() , tftTextReset() , and tftTextScrollUp() .

#define fontBits chars_8x8_bits

Define font

Definition at line 29 of file retargettft.c .

Referenced by RETARGET_TFTUpdate() .

#define LINES 30

Lines

Definition at line 32 of file retargettft.c .

Referenced by RETARGET_TFTTX() , RETARGET_TFTUpdate() , tftTextReset() , and tftTextScrollUp() .

Function Documentation

int RETARGET_ReadChar ( void )

Receive a byte No input method from TFT is possible, thus we always return -1.

Returns: -1 on failure, or positive character integer on sucesss

Definition at line 351 of file retargettft.c .

int RETARGET_WriteChar ( char c )

Transmit single byte to the TFT.

Parameters

`c`	Character to transmit

Returns: Transmitted character

Definition at line 361 of file retargettft.c .

References BC_ARB_CTRL_EBI , BC_REGISTER , BC_UIF_AEM_EFM , BSP_RegisterRead() , bufferReset , fullUpdate , initialized , LFtoCRLF , RETARGET_TFTTX() , RETARGET_TFTUpdate() , tftReset , and tftTextReset() .

Variable Documentation

bool bufferReset = true

static

Reset buffer

Definition at line 41 of file retargettft.c .

Referenced by RETARGET_WriteChar() , and tftTextReset() .

uint8_t charBuffer[ LINES ][ CHARS ]

static

Character buffer

Definition at line 34 of file retargettft.c .

Referenced by RETARGET_TFTTX() , RETARGET_TFTUpdate() , tftTextReset() , and tftTextScrollUp() .

bool fullUpdate = true

static

Display updated

Definition at line 40 of file retargettft.c .

Referenced by RETARGET_WriteChar() , and tftTextScrollUp() .

bool initialized = false

static

Intialize TFT stdio retarget

Definition at line 44 of file retargettft.c .

Referenced by RETARGET_WriteChar() , and tftTextReset() .

bool LFtoCRLF = 0

static

LF to CRLF conversion disabled

Definition at line 43 of file retargettft.c .

Referenced by RETARGET_TftCrLf() , and RETARGET_WriteChar() .

uint8_t rgbColor[3]

static

Color for font

Definition at line 35 of file retargettft.c .

Referenced by RETARGET_TFTTX() , RETARGET_TFTUpdate() , and tftTextReset() .

bool tftReset = true

static

Reset TFT

Definition at line 42 of file retargettft.c .

Referenced by RETARGET_WriteChar() , and tftTextReset() .

int xpos

static

Cursor position

Definition at line 38 of file retargettft.c .

Referenced by RETARGET_TFTTX() , RETARGET_TFTUpdate() , tftTextReset() , and tftTextScrollUp() .

int ypos

static

Cursor position

Definition at line 38 of file retargettft.c .

Referenced by RETARGET_TFTTX() , RETARGET_TFTUpdate() , tftTextReset() , and tftTextScrollUp() .