URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [rtos/] [ucos-ii/] [2.91/] [drivers/] [console.c] - Rev 599
Go to most recent revision | Compare with Previous | Blame | View Log
/* Functions to control a console Very basic right now. Author: Julius Baxter, julius@opencores.org */ /* This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" /* ANSI escape code values */ /* String these two together to create the control sequence indicator "ESC[" */ /* ASCII escape value, ESC*/ #define ESC 0x1b /* Left square bracket '[' */ #define CSI 0x5b #define PUT_CSI1(X) putc(ESC);putc(CSI);putc(X) #define PUT_CSI2(X, Y) putc(ESC);putc(CSI);putc(X);putc(Y) #define ASCII_DEC_OFFSET 0x30 static int cWidth, cHeight; static void console_place_cursor(int x, int y); void console_init (int width, int height) { /* Save width and height */ cWidth = width; cHeight = height; console_clear(); /* Hide cursor - stops cursor block flickering about as the console is updated. */ putc(ESC);putc(CSI);putc('?');putc('2');putc('5');putc('l'); } void console_finish (void) { console_clear(); /* Finishing up - reset console to show cursor. */ putc(ESC);putc(CSI);putc('?');putc('2');putc('5');putc('h'); } void console_clear (void) { /* Erase whole display */ PUT_CSI2('2','J'); console_place_cursor(1,1); } static void console_place_cursor (int x, int y) { /* First convert Y to a decimal string */ /* This is a hacky way of doing it. */ int yHunds = 0; int yTens = 0; int yOnes = 0; while (y >= 100){ y -= 100; yHunds ++; } while (y >= 10){ y -= 10; yTens ++; } while (y > 0){ y --; yOnes++; } /* This is a hacky way of doing it. */ int xHunds = 0; int xTens = 0; int xOnes = 0; while (x >= 100){ x -= 100; xHunds ++; } while (x >= 10){ x -= 10; xTens ++; } while (x > 0){ x --; xOnes++; } /* Output control sequence */ putc(ESC); putc(CSI); if (yHunds) putc(yHunds + ASCII_DEC_OFFSET); if (yTens) putc(yTens + ASCII_DEC_OFFSET); putc(yOnes + ASCII_DEC_OFFSET); putc(';'); if (xHunds) putc(xHunds + ASCII_DEC_OFFSET); if (xTens) putc(xTens + ASCII_DEC_OFFSET); putc(xOnes + ASCII_DEC_OFFSET); putc('f'); } void console_puts (int x, int y, char* str) { int i; OS_CPU_SR cpu_sr; if ((y >= cHeight) || (x >= cWidth)) return; /* Nothing to do, out of our range */ /* Ensure this output doesn't get interrupted, as stuff will be spewed out to random places if the console control sequences are interrupted */ OS_ENTER_CRITICAL() console_place_cursor(x, y); /* Print string contents, don't overflow line, and don't handle wrapping.*/ while((str[i]!=0) && (i+y < cWidth)) putc(str[i++]); /* Return cursor to 1,1 */ console_place_cursor(1,1); OS_EXIT_CRITICAL() } void console_putc (int x, int y, char c) { OS_CPU_SR cpu_sr; if ((y >= cHeight) || (x >= cWidth)) return; /* Nothing to do, out of our range */ /* Ensure this output doesn't get interrupted, as stuff will be spewed out to random places if the console control sequences are interrupted */ OS_ENTER_CRITICAL() console_place_cursor(x, y); putc(c); /* Return cursor to 1,1 */ console_place_cursor(1,1); OS_EXIT_CRITICAL() }
Go to most recent revision | Compare with Previous | Blame | View Log