ti/getcsc.h

#include <ti/getcsc.h>

Naturally, TI’s operating system also has its own keyboard driver. You can easily use it instead of the keypadc library, and is particularly suited to non-game programs.

The OS’s interrupt handler handles the keyboard driver and caches a scancode when it detects a key press. You can use this scancode directly without any translation of 2nd and alpha through the os_GetCSC function.

TI-83 Premium CE

Some keys on the TI-83 Premium CE are labeled differently, and some have completely different functions. For convenience, there are additional equates for the TI-83 Premium CE names. In the table below, the five keys with different functions are emphasized.

TI-84 Plus CE	Equate	TI-83 Premium CE	Equate
Y=	`sk_Yequ`	f(x)	`sk_Fx`
Window	`sk_Window`	Fenetre	`sk_Fenetre`
Del	`sk_Del`	Suppr	`sk_Suppr`
Apps	`sk_Apps`	Matrice	`sk_Matrice`
Clear	`sk_Clear`	Annul	`sk_Annul`
x^-1	`sk_Recip`	<>	`sk_TglExact`
Sin	`sk_Sin`	Trig	`sk_Trig`
Cos	`sk_Cos`	Resol	`sk_Resol`
Tan	`sk_Tan`	Fraction template	`sk_Frac`

API Documentation

TI’s keyboard interface defines.

Authors

Matt “MateoConLechuga” Waltz

Jacob “jacobly” Young

Defines

os_KbdScanCode: uint8_t: Cached GetCSC code.

sk_Down

sk_Left

sk_Right

sk_Up

sk_Enter

sk_2nd

sk_Clear: TI-84 Plus CE name.

sk_Alpha

sk_Add

sk_Sub: Subtract, not negate.

sk_Mul

sk_Div

sk_Graph

sk_Trace

sk_Zoom

sk_Window: TI-84 Plus CE name.

sk_Yequ: TI-84 Plus CE name.

sk_Mode

sk_Del: TI-84 Plus CE name.

sk_Store

sk_Ln

sk_Log

sk_Square

sk_Recip: TI-84 Plus CE [x^-1]; on the TI-83 Premium CE, this is [<>].

sk_Math

sk_0

sk_1

sk_4

sk_7

sk_2

sk_5

sk_8

sk_3

sk_6

sk_9

sk_Comma

sk_Sin: TI-84 Plus CE; on the TI-83 Premium CE, this is [TRIG]

sk_Apps: TI-84 Plus CE; on the TI-83 Premium CE, this is [MATRICE].

sk_GraphVar: X, T, theta, n.

sk_DecPnt

sk_LParen

sk_Cos: TI-84 Plus CE; on the TI-83 Premium CE, this is [RESOL].

sk_Prgm

sk_Stat

sk_Chs: Unary negation, not subtraction.

sk_RParen

sk_Tan: TI-84 Plus CE; on; the TI-83 Premium CE, this is the fraction template.

sk_Vars

sk_Power: [^]

sk_Fenetre: TI-83 Premium CE name.

sk_Fx: TI-83 Premium CE name.

sk_Suppr: TI-83 Premium CE name.

sk_TglExact: TI-83 Premium CE [<>]; it’s [x^-1] on the TI-84 Plus CE.

sk_Trig: TI-83 Premium CE; on the TI-84 Plus CE, this is [SIN].

sk_Matrice: TI-83 Premium CE; on the TI-84 Plus CE, this is [APPS].

sk_Resol: TI-83 Premium CE; on the TI-84 Plus CE, this is [COS].

sk_Frac: TI-83 Premium CE; on the TI-84 Plus CE, this is [TAN].

sk_Annul: TI-83 Premium CE name.

Functions

bool boot_CheckOnPressed(void)

Checks if the [on] key was pressed.

Returns: True is returned if [on] key was pressed

uint8_t os_GetCSC(void)

Performs an OS call to get the keypad scan code.

You can also use this function to get input from the user as a string like this:

const char *chars = "\0\0\0\0\0\0\0\0\0\0\"WRMH\0\0?[VQLG\0\0:ZUPKFC\0 YTOJEB\0\0XSNIDA\0\0\0\0\0\0\0\0";
uint8_t key, i = 0;
char buffer[50];

while((key = os_GetCSC()) != sk_Enter) {
    if(chars[key]) {
        buffer[i++] = chars[key];
    }
}

Feel free to modify the string to suit your needs.

Returns: Key scan code