retargettft.c File Reference
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 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
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static |
Reset buffer
Definition at line 41
of file retargettft.c
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Referenced by RETARGET_WriteChar(), and tftTextReset().
Character buffer
Definition at line 34
of file retargettft.c
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Referenced by RETARGET_TFTTX(), RETARGET_TFTUpdate(), tftTextReset(), and tftTextScrollUp().
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static |
Display updated
Definition at line 40
of file retargettft.c
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Referenced by RETARGET_WriteChar(), and tftTextScrollUp().
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static |
Intialize TFT stdio retarget
Definition at line 44
of file retargettft.c
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Referenced by RETARGET_WriteChar(), and tftTextReset().
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static |
LF to CRLF conversion disabled
Definition at line 43
of file retargettft.c
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Referenced by RETARGET_TftCrLf(), and RETARGET_WriteChar().
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static |
Color for font
Definition at line 35
of file retargettft.c
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Referenced by RETARGET_TFTTX(), RETARGET_TFTUpdate(), and tftTextReset().
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static |
Reset TFT
Definition at line 42
of file retargettft.c
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Referenced by RETARGET_WriteChar(), and tftTextReset().
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static |
Cursor position
Definition at line 38
of file retargettft.c
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Referenced by RETARGET_TFTTX(), RETARGET_TFTUpdate(), tftTextReset(), and tftTextScrollUp().
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static |
Cursor position
Definition at line 38
of file retargettft.c
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Referenced by RETARGET_TFTTX(), RETARGET_TFTUpdate(), tftTextReset(), and tftTextScrollUp().