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Currently in an unknown state, with keyboard input not implemented and display output working normally
Last updated 2025-07-28
This commit is contained in:
superbeelavaman
2025-03-21 13:49:35 -07:00
committed by GitHub
parent f80c25ae9d
commit aa475003cd
9 changed files with 521 additions and 0 deletions
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# TerminalCE
Serial console for the TI 84 Plus CE
When running, sets USB port be seen as a USB-Serial adapter by a host device.
on Linux systems running systemd, run
`# systemctl start serial-getty@ttyUSB0.service`
to start a terminal through the emulated serial port on the calc.
## Planned features
40 column terminal (hopefully)
30 rows, top 2 and bottom 2 rows being used for status bars with black on white text
example UI:
```
+----------------------------------------+
| Window Title |
| |
| ... actual console area ... |
| |
| 01, 17 |
+----------------------------------------+
```
for colours, or together colour bits from 4 bit rgbi input: (setting color not properly implemented yet)
```
RRRBBGGG Hex Name
10100000 A0 Red
00000101 05 Green
00010000 10 Blue
01001010 4A Intensity
```
Keyboard: (not implemented yet)
(top: key label, left: shift state)
| | f1 | f2 | f3 | f4 | f5 |
|----|-------|-------|-------|-------|-------|
|0 | | | | | |
|^ | | | | | |
|A | | | | | |
|a | | | | | |
| | 14 | 13 | 12 | 11 | 10 |
| | 2nd | mode | del | left | up |
|----|-------|-------|-------|-------|-------|
|0 | | | del | | |
|^ | | ^C | ins | | |
|A | | | | | |
|a | | | | | |
| | 15 | 16 | 17 | 71 | 73 |
| | alpha | XT0n | stat | down | right |
|----|-------|-------|-------|-------|-------|
|0 | | | | | |
|^ | | | | | |
|A | | / | | | |
|a | | | | | |
| | 27 | 37 | 47 | 70 | 72 |
| | math | apps | prgm | vars | clear |
|----|-------|-------|-------|-------|-------|
|0 | | | | | |
|^ | | | | | |
|A | A | B | C | | |
|a | a | b | c | | |
| | 26 | 36 | 46 | 56 | 66 |
| | x^-1 | sin | cos | tan | ^ |
|----|-------|-------|-------|-------|-------|
|0 | | | | | ^ |
|^ | | | | | pi |
|A | D | E | F | G | H |
|a | d | e | f | g | h |
| | 25 | 35 | 45 | 55 | 65 |
| | x^2 | , | ( | ) | / |
|----|-------|-------|-------|-------|-------|
|0 | | , | ( | ) | / |
|^ | | | { | } | |
|A | I | J | K | L | M |
|a | i | j | k | l | m |
| | 24 | 34 | 44 | 54 | 64 |
| | log | 7 | 8 | 9 | * |
|----|-------|-------|-------|-------|-------|
|0 | | 7 | 8 | 9 | * |
|^ | | & | * | | [ |
|A | N | O | P | Q | R |
|a | n | o | p | q | r |
| | 23 | 33 | 43 | 53 | 63 |
| | ln | 4 | 5 | 6 | - |
|----|-------|-------|-------|-------|-------|
|0 | | 4 | 5 | 6 | - |
|^ | | $ | % | ^ | ] |
|A | S | T | U | V | W |
|a | s | t | u | v | w |
| | 22 | 32 | 42 | 52 | 62 |
| | sto-> | 1 | 2 | 3 | + |
|----|-------|-------|-------|-------|-------|
|0 | | 1 | 2 | 3 | + |
|^ | | ! | @ | # | |
|A | X | Y | Z | theta | " |
|a | x | y | z | | |
| | 21 | 31 | 41 | 51 | 61 |
| | on | 0 | . | (-) | enter |
|----|-------|-------|-------|-------|-------|
|0 | | 0 | . | | |
|^ | | ~ | < | > | |
|a | | space | ; | ? | |
|A | | space | : | ! | |
| | | 30 | 40 | 50 | 60 |
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# ----------------------------
# Makefile Options
# ----------------------------
NAME = DEMO
ICON = icon.png
DESCRIPTION = "CE C Toolchain Demo"
COMPRESSED = NO
CFLAGS = -Wall -Wextra -Oz
CXXFLAGS = -Wall -Wextra -Oz
# ----------------------------
include $(shell cedev-config --makefile)
FONTPACKNAME = termFont
FONTDIR = $(SRCDIR)/gfx
DEPS = $(BINDIR)/$(FONTPACKNAME).8xv
$(BINDIR)/$(FONTPACKNAME).8xv: $(SRCDIR)/gfx/$(FONTPACKNAME).bin
$(Q)convbin --iformat bin --input $(SRCDIR)/gfx/$(FONTPACKNAME).bin --oformat 8xv --output $(BINDIR)/$(FONTPACKNAME).8xv --archive --name $(FONTPACKNAME)
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#!/usr/bin/python
from PIL import Image
import struct
tilesheetPNG = Image.open("TermFont.png")
tilesheetBIN = open("TermFont.bin", "wb")
tilesheetPixels = tilesheetPNG.load()
tilesheetX, tilesheetY = tilesheetPNG.size
horizTiles = int(tilesheetX/8)
vertTiles = int(tilesheetY/8)
totalTiles = horizTiles*vertTiles
def generateTile(x,y,image):
tile = []
for py in range(0,8):
row = []
for px in range(0,8):
r,g,b,a = image[(8*x)+px,(8*y)+py]
row.append(((r+g+b)>384))
tile.append(sum([int(row[b])*(2**(7-b)) for b in range(0,8)]))
return tile
generatedTileData = []
for y in range(0,vertTiles):
for x in range(0,horizTiles):
generatedTileData += generateTile(x,y,tilesheetPixels)
tilesheetBIN.write(bytearray(generatedTileData))
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/*
*--------------------------------------
* Program Name: Terminal CE
* Author: SuperbeeeLavaman
* License: Apache License 2.0
* Description: Dumb Terminal application for TI-84 Plus CE
*--------------------------------------
*/
#include <srldrvce.h>
#include <graphx.h>
#include <debug.h>
#include <keypadc.h>
#include <stdbool.h>
#include <string.h>
#include <tice.h>
#include <fileioc.h>
#include <debug.h>
srl_device_t srl;
bool has_srl_device = false;
uint8_t srl_buf[512];
static usb_error_t handle_usb_event(usb_event_t event, void *event_data,
usb_callback_data_t *callback_data __attribute__((unused))) {
usb_error_t err;
/* Delegate to srl USB callback */
if ((err = srl_UsbEventCallback(event, event_data, callback_data)) != USB_SUCCESS)
return err;
/* Enable newly connected devices */
if(event == USB_DEVICE_CONNECTED_EVENT && !(usb_GetRole() & USB_ROLE_DEVICE)) {
usb_device_t device = event_data;
dbg_printf("device connected\n");
usb_ResetDevice(device);
}
/* Call srl_Open on newly enabled device, if there is not currently a serial device in use */
if(event == USB_HOST_CONFIGURE_EVENT || (event == USB_DEVICE_ENABLED_EVENT && !(usb_GetRole() & USB_ROLE_DEVICE))) {
/* If we already have a serial device, ignore the new one */
if(has_srl_device) return USB_SUCCESS;
usb_device_t device;
if(event == USB_HOST_CONFIGURE_EVENT) {
/* Use the device representing the USB host. */
device = usb_FindDevice(NULL, NULL, USB_SKIP_HUBS);
if(device == NULL) return USB_SUCCESS;
} else {
/* Use the newly enabled device */
device = event_data;
}
/* Initialize the serial library with the newly attached device */
srl_error_t error = srl_Open(&srl, device, srl_buf, sizeof srl_buf, SRL_INTERFACE_ANY, 9600);
if(error) {
/* Print the error code to the homescreen */
dbg_printf("Error %d initting serial\n", error);
return USB_SUCCESS;
}
dbg_printf("serial initialized\n");
has_srl_device = true;
}
if(event == USB_DEVICE_DISCONNECTED_EVENT) {
usb_device_t device = event_data;
if(device == srl.dev) {
dbg_printf("device disconnected\n");
srl_Close(&srl);
has_srl_device = false;
}
}
return USB_SUCCESS;
}
uint8_t fontData;
uint8_t fontBytes[2048];
uint16_t renderGoal[1200];
uint16_t renderCurrent[1200];
int exit_Code = 0;
uint24_t idx = 0;
uint8_t cursorX = 0;
uint8_t cursorY = 0;
bool canUseFont = false;
uint8_t idx8 = 0;
uint8_t colour_red = 0xA0;
uint8_t colour_green = 0x05;
uint8_t colour_blue = 0x10;
uint8_t colour_gray = 0x4A;
uint8_t keyboardState = 0x00;
bool newTiles = true;
char keyactions[256] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0xFD, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0xFE,
" ", 0, 0, 0, 0, 0, 0, 0,
";", 0, 0, 0, 0, 0, 0, 0,
"?", 0, 0, 0, 0, 0, 0, 0,
0x0D, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0xFC, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0xFE,
" ", 0, 0, 0, 0, 0, 0, 0,
":", 0, 0, 0, 0, 0, 0, 0,
"!", 0, 0, 0, 0, 0, 0, 0,
0x0D, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0xFF, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0xFC,
"0", "1", "4", "7", ",", 0, 0, 0,
".", "2", "5", "8", "(", 0, 0, 0,
0, "3", "6", "9", ")", 0, 0, 0,
0x0D, "+", "-", "*", "/", "^", 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0xFE, 0x03, 0x16,
0, 0, 0, 0, 0, 0, 0, 0xFC,
"~", 0, 0, 0, 0, 0, 0, 0,
"<", 0, 0, 0, 0, 0, 0, 0,
">", 0, 0, 0, 0, 0, 0, 0,
0x0D, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
int begin() {
kb_EnableOnLatch();
kb_ClearOnLatch();
fontData = ti_Open("TermFont", "r");
if (fontData == 0) {
dbg_printf("dang, no font :(\n");
canUseFont = false;
} else {
canUseFont = true;
ti_Read(fontBytes, 1, 2048, fontData);
}
const usb_standard_descriptors_t *desc = srl_GetCDCStandardDescriptors();
/* Initialize the USB driver with our event handler and the serial device descriptors */
usb_error_t usb_error = usb_Init(handle_usb_event, NULL, desc, USB_DEFAULT_INIT_FLAGS);
if(usb_error) {
usb_Cleanup();
printf("usb init error %u\n", usb_error);
}
idx = 0;
while (idx < 80) {
renderGoal[idx] = 0x200F;
renderGoal[idx+1120] = 0x200F;
idx += 1;
}
renderGoal[39] = 0xFC0F;
return 0;
}
void scroll() {
memcpy(renderGoal+80, renderGoal+120, 2000);
memset(renderGoal+1080, 0, 80);
newTiles = true;
}
int end() {
usb_Cleanup();
if (canUseFont) {
if (ti_Close(fontData) == 0) {
exit_Code = 1;
}
}
return exit_Code;
}
bool step() {
usb_HandleEvents();
if(has_srl_device) {
char in_buf[64];
/* Read up to 64 bytes from the serial buffer */
size_t bytes_read = srl_Read(&srl, in_buf, sizeof in_buf);
/* Check for an error (e.g. device disconneced) */
if(bytes_read < 0) {
dbg_printf("error %d on srl_Read\n", bytes_read);
has_srl_device = false;
} else if(bytes_read > 0) {
idx = 0;
char symbol;
char escape_code[16]
while (idx < bytes_read) {
symbol = in_buf[idx];
int increment_X = 1;
if (symbol == 0x27)
if (symbol == 0x7F) {
symbol = 0x20;
cursorX -= (cursorX>0);
increment_X = 0;
}
if (symbol == 0x0D) {
cursorX = 0;
cursorY += 1;
symbol = 0x20;
increment_X = 0;
}
if (symbol == 0x05) {
srl_Write(&srl, "TerminalCE", 10);
increment_X = 0;
symbol = 0x20
}
if (cursorX >= 40) {
cursorX = 0;
cursorY += 1;
}
if (cursorY > 25) {
scroll();
cursorY = 25;
}
renderGoal[((40 * (cursorY+2)) + cursorX)] = (256*symbol+0xF0);
cursorX += increment_X;
idx += 1;
}
newTiles = true;
}
kb_Scan();
idx8 = 0;
idx = 0;
char send[1];
uint8_t keys = 0;
while (idx < 8) {
keys = kb_Data[idx];
if (keys) {
while (idx8 < 8) {
if (keys & 0x01) {
if (keyboardState > 3) { keyboardState = 0 ; }
send[1] = keyactions[(64*keyboardState)+(8*idx)+idx8];
}
keys = (keys >> 1)
idx8 += 1;
}
}
idx += 1;
}
srl_Write(&srl, send, 1);
}
return !kb_On;
}
int renderTile(int indx) {
int tileY = indx / 40;
int tileX = indx - ( 40 * tileY );
uint16_t tileData = renderGoal[indx];
uint8_t symbol = (uint8_t)((tileData & 0xFF00) >> 8);
uint8_t colour = (uint8_t)(tileData & 0x00FF);
uint8_t fgColour = 0x00;
uint8_t bgColour = 0x00;
if (colour & 0b10000000) {
fgColour |= colour_gray;
}
if (colour & 0b00001000) {
bgColour |= colour_gray;
}
if (colour & 0b01000000) {
fgColour |= colour_red;
}
if (colour & 0b00000100) {
bgColour |= colour_red;
}
if (colour & 0b00100000) {
fgColour |= colour_green;
}
if (colour & 0b00000010) {
bgColour |= colour_green;
}
if (colour & 0b00010000) {
fgColour |= colour_blue;
}
if (colour & 0b00000001) {
bgColour |= colour_blue;
}
uint8_t pixelX = 0;
uint8_t pixelY = 0;
uint8_t rowData;
while (pixelY < 8) {
if (canUseFont) {
rowData = fontBytes[(8*symbol)+pixelY];
} else {
rowData = symbol;
}
pixelX = 0;
while (pixelX < 8) {
bool pixelState = rowData & (1 << (7-pixelX));
uint8_t pixelColour;
if (pixelState) {
pixelColour = fgColour;
} else {
pixelColour = bgColour;
}
gfx_SetColor(pixelColour);
gfx_SetPixel(((8 * tileX)+pixelX),((8 * tileY)+pixelY));
pixelX += 1;
}
pixelY += 1;
}
return 0;
}
int draw() {
int drawIdx = 0;
int renderedNow = 0;
if (newTiles == false) {
return 0;
}
while (renderedNow < 10) {
if (renderCurrent[drawIdx] != renderGoal[drawIdx]) {
exit_Code = renderTile(drawIdx);
renderCurrent[drawIdx] = renderGoal[drawIdx];
if (exit_Code != 0 ) {
return exit_Code;
}
renderedNow += 1;
}
if (drawIdx > 1200) {
newTiles = false;
return 0;
}
drawIdx += 1;
}
return 0;
}
int main() {
exit_Code = begin(); // No rendering allowed!
if (exit_Code != 0 ) {
return exit_Code;
}
gfx_Begin();
gfx_ZeroScreen();
gfx_SetDrawScreen();
while (step()) { // No rendering allowed in step!
exit_Code = draw(); // As little non-rendering logic as possible
if (exit_Code != 0 ) {
gfx_End();
return exit_Code;
}
}
gfx_End();
return end();
}