Michael Hayes
14 years ago
parent
1213c832df
commit
dc8e528793
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# File: Makefile
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# Author: M. P. Hayes, UCECE
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# Date: 11 Sep 2010
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# Descr: Makefile for bounce1
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CC = gcc
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CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I../../drivers/test -I../../utils
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DEL = rm
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# Default target.
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all: bounce1
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# Compile: create object files from C source files.
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bounce1-test.o: bounce1.c ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h ../../utils/pacer.h
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$(CC) -c $(CFLAGS) $< -o $@
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mgetkey-test.o: ../../drivers/test/mgetkey.c ../../drivers/test/mgetkey.h
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$(CC) -c $(CFLAGS) $< -o $@
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pio-test.o: ../../drivers/test/pio.c ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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system-test.o: ../../drivers/test/system.c ../../drivers/test/avrtest.h ../../drivers/test/mgetkey.h ../../drivers/test/pio.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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timer-test.o: ../../drivers/test/timer.c ../../drivers/test/system.h ../../drivers/test/timer.h
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$(CC) -c $(CFLAGS) $< -o $@
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pacer-test.o: ../../utils/pacer.c ../../drivers/test/system.h ../../drivers/test/timer.h ../../utils/pacer.h
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$(CC) -c $(CFLAGS) $< -o $@
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# Link: create executable file from object files.
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bounce1: bounce1-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o pacer-test.o
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$(CC) $(CFLAGS) $^ -o $@ -lrt
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# Clean: delete derived files.
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.PHONY: clean
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clean:
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-$(DEL) bounce1 bounce1-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o pacer-test.o
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@ -0,0 +1,57 @@
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/** @file font.h
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@author M. P. Hayes, UCECE
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@date 18 Sep 2011
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@brief Font lookup.
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*/
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#include "font.h"
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/** Determine if character in font.
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@param font pointer to font structure
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@param ch character to check
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@return non-zero if character is in font. */
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bool font_contains_p (font_t *font, char ch)
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{
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int8_t index;
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if (!font)
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return 0;
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index = ch - font->offset;
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return index >= 0 && index < font->size;
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}
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/** Determine if pixel on or off.
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@param font pointer to font structure
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@param ch character to display
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@param col column of font element
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@param row row of font element
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@return 1 if pixel on; if pixel out of bounds return 0. */
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bool font_pixel_get (font_t *font, char ch, uint8_t col, uint8_t row)
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{
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int8_t index;
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font_data_t *char_data;
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uint8_t offset;
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if (!font)
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return 0;
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/* Check if desired pixel within size of an element. */
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if (col >= font->width || row >= font->height)
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return 0;
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/* Find index of font element. */
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index = ch - font->offset;
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if (index < 0 || index >= font->size)
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return 0;
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/* Get start of font element data for ch. */
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char_data = &font->data[index * font->bytes];
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/* Extract whether pixel should be on or off. */
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offset = row * font->width + col;
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return (char_data[offset >> 3] & BIT (offset % 8)) != 0;
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}
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