File content as of revision 0:775da631eb9a:
/* Test harness for TextStar serial LCD library
* Paul Griffith
* Last edit: 10 Jan 2010
*/
#include "mbed.h"
#include "TextStar.h"
void bargraph_demo(int);
void printhelps(void);
void bad_args(void);
Serial pc(USBTX, USBRX);
TextStar lcd(p9, p10); // tx, rx
int main() {
char buf[120], *cp;
char arg1[50], arg2[50], arg3[50];
int argc, cnt = 0, i, j, k, l;
printf("TextStar Serial LCD test harness\n");
printf("Type ? for help\n");
lcd.printf("TextStar Serial\rLCD test harness");
while (1) {
printf("> ");
cp = buf;
while ( (*cp++ = putchar(getchar())) != '\r') ; //get a line of input
*cp = '\0'; //terminate buffer
printf("\n");
argc = sscanf(buf, "%s%s%s", arg1, arg2, arg3); //extract command and arguments
if (argc < 1)
continue;
switch (arg1[0]) {
case 'b': //bar graph demo
bargraph_demo(0);
wait(1.0);
bargraph_demo(1);
break;
case 'c': //clear display
lcd.cls();
break;
case 'C': //set cursor style
if (argc != 2) {
bad_args();
break;
}
sscanf(arg2, "%d", &i); //extract style number
lcd.set_cursor(i);
break;
case 'd': //move cursor down
j = 1;
if (argc == 2)
sscanf(arg2, "%d", &j);
for (i = 0; i < j; i++)
lcd.down();
break;
case 'D': //define custom character
sscanf(buf, "%s%d%x%x", arg1, &i, &j, &k); //extract arguments
arg3[0] = (j >> 24) & 0xFF;
arg3[1] = (j >> 16) & 0xFF;
arg3[2] = (j >> 8) & 0xFF;
arg3[3] = j & 0xFF;
arg3[4] = (k >> 24) & 0xFF;
arg3[5] = (k >> 16) & 0xFF;
arg3[6] = (k >> 8) & 0xFF;
arg3[7] = k & 0xFF;
lcd.custom_char(i, arg3);
lcd.cls();
lcd.printf("Custom chars");
lcd.locate(0, 1);
lcd.printf("128-135 %c%c%c%c%c%c%c%c", 0x80, 0x81,
0x82, 0x83, 0x84, 0x85, 0x86, 0x87);
break;
case 'e': //enter text at current position
if (argc < 2) {
bad_args();
break;
}
*--cp = '\0'; //get rid of \r at end of buffer
sscanf(buf, "%s%n", arg1, &i); //extract arguments
// cp = buf + i;
// while (*cp++ == ' ') ; //find start of text
// --cp;
cp = buf + i + 1; //allow leading white space
lcd.printf("%s", cp);
break;
case 'h': //cursor home
lcd.home();
break;
case 'k': //get key states
while (lcd.readable() )
lcd.getc(); //empty buffer
printf("Key states = ");
lcd.send_keys();
i = lcd.getc();
j = lcd.getc();
k = lcd.getc();
l = lcd.getc();
printf("%c%c%c%c\n", i, j, k, l);
break;
case 'K': //get key output until any char typed on pc
printf("Key output: ");
while (pc.readable() == 0) {
if (lcd.readable() )
pc.putc(lcd.getc() );
}
while (pc.readable() )
pc.getc();
printf("\nAll done\n");
break;
case 'o': //output demo
lcd.cls();
j = 20;
if (argc == 2) {
sscanf(arg2, "%d", &j);
}
for (i = 0; i < j; i++) {
lcd.printf("Count = %d\r", cnt++);
wait( (i == 0) ? 1.0 : 0.2);
}
break;
case 'l': //move cursor left
j = 1;
if (argc == 2)
sscanf(arg2, "%d", &j);
for (i = 0; i < j; i++)
lcd.left();
break;
case 'p': //set cursor position
if (argc < 3) {
bad_args();
break;
}
sscanf(buf, "%s%d%d", arg1, &i, &j); //extract arguments
lcd.locate(j, i);
break;
case 'q': //quit
exit(1);
break;
case 'r': //move cursor right
j = 1;
if (argc == 2)
sscanf(arg2, "%d", &j);
for (i = 0; i < j; i++)
lcd.right();
break;
case 'R': //reset display (and set autoblank (and autoscroll) )
if (argc == 1) {
lcd.reset();
}
else if (argc == 2) {
sscanf(arg2, "%d", &i);
lcd.reset(i);
}
else if (argc >= 3) {
sscanf(arg2, "%d", &i);
sscanf(arg3, "%d", &j);
lcd.reset(i, j);
}
break;
case 's': //scroll down
j = 1;
if (argc == 2)
sscanf(arg2, "%d", &j);
for (i = 0; i < j; i++)
lcd.scroll_down();
break;
case 'S': //scroll up
j = 1;
if (argc == 2)
sscanf(arg2, "%d", &j);
for (i = 0; i < j; i++)
lcd.scroll_up();
break;
case 'u': //move cursor up
j = 1;
if (argc == 2)
sscanf(arg2, "%d", &j);
for (i = 0; i < j; i++)
lcd.up();
break;
case 'v': //display firmware version
lcd.version();
break;
case 'w': //move visible window
if (argc != 2) {
bad_args();
break;
}
sscanf(arg2, "%d", &i); //extract line number
lcd.window(i);
break;
case 'x': //send hex data to display
argc = sscanf(buf, "%s%x%x%x%x", arg1, &i, &j, &k, &l); //extract arguments
if (argc > 1)
lcd.putc(i & 0xFF);
if (argc > 2)
lcd.putc(j & 0xFF);
if (argc > 3)
lcd.putc(k & 0xFF);
if (argc > 4)
lcd.putc(l & 0xFF);
break;
case '?': //print help
printhelps();
break;
default:
printf("?? Unknown command\n");
break;
}
}
}
//Command functions
void printhelps(void) {
printf("Command summary:\n");
printf("b bar graph demo\n");
printf("c clear display\n");
printf("C style set cursor style (0-4)\n");
printf("d [n] cursor down n times (default 1)\n");
printf("D n bm1 bm2 define custom char n (128-135) with bitmap in hex\n");
printf(" bm1 = bitmap rows 1-4, bm2 = rows 5-8\n");
printf("e text enter text at current position\n");
printf("h cursor home\n");
printf("k get key states\n");
printf("K show key output\n");
printf("l [n] cursor left n times (default 1)\n");
printf("o output demo\n");
printf("p line col set cursor position to line (0-15) and column (0-15)\n");
printf("q quit\n");
printf("r [n] cursor right n times (default 1)\n");
printf("R [ab] [as] reset display, set auto-blank (0/1) and auto-scroll (0/1)\n");
printf("s [n] scroll down n times (default 1)\n");
printf("S [n] scroll up n times (default 1)\n");
printf("u [n] cursor up n times (default 1)\n");
printf("v display firmware version\n");
printf("w line move display window to specified line (0-14)\n");
printf("x b b b b send hex data to display, up to 4 bytes\n");
}
void bargraph_demo(int capped) {
int i;
lcd.cls();
lcd.printf("BAR GRAPH DEMO %d", capped + 1);
for (i = 0; i <= 100; i++) {
lcd.locate(0, 1);
lcd.bar_graph(capped, 16, i);
wait( (i == 0) ? 1.0 : 0.02);
}
wait(1.0);
for (i = 100; i >= 0; i--) {
lcd.locate(0, 1);
lcd.bar_graph(capped, 16, i);
wait( (i == 0) ? 1.0 : 0.02);
}
}
void bad_args(void) {
printf("?? Bad arguments\n");
}
Paul Griffith