ti/screen.h
#include <ti/screen.h>
Programs that don’t need fancy graphics can use TI’s screen routines instead of <graphx.h>.
If you want to print text to the homescreen and have it support automatic scrolling,
then cursor locations are based on a character grid.
Most of the text routines work this way.
In particular, os_GetStringInput and os_PutStr* work this way.
However, you can also draw text to arbitrary pixel locations using either the large or small font.
Those routines have Font in their name and also let you use color.
API Documentation
TI CE OS screen functions. If you want to print to the screen without using GraphX, this is the file.
- Authors
Matt “MateoConLechuga” Waltz
Jacob “jacobly” Young
Defines
-
os_ClrHome()
Resets the OS homescreen; accounts for split screen.
-
os_ClrHomeFull()
Resets the OS homescreen fully; ignores split screen mode.
-
os_SmallFont
TIOS small font.
See also
os_FontSelect
-
os_LargeFont
TIOS large font.
See also
os_FontSelect
-
os_CurRow
uint8_t: Font row position
-
os_CurCol
uint8_t: Font column position
-
os_TextFGColor
uint16_t: Large font foreground 565 BGR color
-
os_TextBGColor
uint16_t: Large font background 565 BGR color
-
os_PenCol
uint24_t: Small font column position
-
os_PenRow
uint8_t: Small font row position
-
os_DrawBGColor
uint16_t: Small font background 565 BGR color
-
os_DrawFGColor
uint16_t: Small font foreground 565 BGR color
-
os_DrawColorCode
uint8_t: Small OS font color code
-
os_GraphBGColor
uint16_t: Graph background 565 BGR color
-
os_FillRectColor
uint16_t: OS Rect draw 565 BGR color
Functions
-
void boot_NewLine(void)
Inserts a new line at the current cursor posistion on the homescreen Does not scroll.
-
void os_NewLine(void)
Inserts a new line at the current cursor posistion on the homescreen.
Does scroll.
-
void os_DisableCursor(void)
Disables the OS cursor.
-
void os_EnableCursor(void)
Enables the OS cursor.
-
void os_SetCursorPos(uint8_t curRow, uint8_t curCol)
Set the cursor posistion used on the homescreen.
- Parameters
curRow – [in] The row aligned offset
curCol – [in] The column aligned offset
-
void os_GetCursorPos(unsigned int *curRow, unsigned int *curCol)
Gets the cursor posistion used on the homescreen.
- Parameters
curRow – [in] Pointer to store the row aligned offset
curCol – [in] Pointer to store the column aligned offset
-
uint24_t os_PutStrFull(const char *string)
Puts some text at the current homescreen cursor location.
- Parameters
string – [in] Text to put on homescreen
- Returns
1 if string fits on screen, 0 otherwise
-
uint24_t os_PutStrLine(const char *string)
Puts some text at the current homescreen cursor location.
- Parameters
string – [in] Text to put on homescreen
- Returns
1 if string fits on line, 0 otherwise
-
void os_MoveUp(void)
Routine to scroll homescreen up.
-
void os_MoveDown(void)
Routine to scroll homescreen down.
-
void os_HomeUp(void)
Routine to move row and column posistion to (0,0)
-
void os_ClrLCDFull(void)
Routine to clear the homescreen lcd.
-
void os_ClrLCD(void)
Routine to clear the homescreen lcd.
Accounts for split screen
-
void os_ClrTxtShd(void)
Invalidate and clear text shadow area.
-
void os_DisableHomeTextBuffer(void)
Disable text buffering on the homescreen.
C programs use this area by default for the BSS / Heap.
-
void os_EnableHomeTextBuffer(void)
Enables text buffering on the homescreen.
C programs use this area by default for the BSS / Heap.
-
void os_GetStringInput(char *string, char *buf, size_t bufsize)
Custom implementation input routine for use in conjunction with the TIOS.
It is HIGHLY recommended you implement your own routine, this routine has some quirks. It is good enough for getting basic input however.
- Parameters
string – [in] Input prompt string to be displayed to the user
buf – [in] Storage location to store input string
bufsize – [in] Available storage size for input string. -1 for null termination.
- Returns
None
-
void os_FontSelect(font_t *font)
Selects the (monospace) font to use when drawing text.
- Parameters
font – [in]
font id/pointer to use os_SmallFont
os_LargeFont
-
font_t *os_FontGetID(void)
Gets the font to use when drawing text.
- Returns
0: small font
1: large monospace font
-
uint24_t os_FontGetWidth(const char *string)
- Parameters
string – [in] String to get pixel width of
- Returns
The width of a string in the variable-width format
-
uint24_t os_FontGetHeight(void)
- Returns
[in] The height of the font characters
-
uint24_t os_FontDrawText(const char *string, uint16_t col, uint8_t row)
Draws text using the small font to the screen.
- Parameters
string – [in] String to draw
col – [in] Column to start drawing at
row – [in] Row to start drawing at
- Returns
The end column
-
uint24_t os_FontDrawTransText(const char *string, uint16_t col, uint8_t row)
Draws transparent text using the small font to the screen.
- Parameters
string – [in] String to draw
col – [in] Column to start drawing at
row – [in] Row to start drawing at
- Returns
The end column
-
void os_SetDrawFGColor(uint24_t color)
Sets the foreground color used to draw text.
- Parameters
color – [in] 565 BGR color to set text foreground to
-
uint24_t os_GetDrawFGColor(void)
Gets the foreground color used to draw text.
- Returns
565 BGR color of text foreground
-
void os_SetDrawBGColor(uint24_t color)
Sets the background color used to draw text.
- Parameters
color – [in] 565 BGR color to set text background to
-
uint24_t os_GetDrawBGColor(void)
Gets the background color used to draw text.
Warning
Only useable in OS 5.2 and above; use at your own risk
- Returns
565 BGR color of text nackground
-
struct font
- #include <screen.h>
Structure of font description.
See also
os_FontSelect