diff options
Diffstat (limited to 'components/slcd/s7lstklcd/s7lstklcd.c')
| -rw-r--r-- | components/slcd/s7lstklcd/s7lstklcd.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/components/slcd/s7lstklcd/s7lstklcd.c b/components/slcd/s7lstklcd/s7lstklcd.c new file mode 100644 index 0000000..7ab1671 --- /dev/null +++ b/components/slcd/s7lstklcd/s7lstklcd.c @@ -0,0 +1,187 @@ +/* ---------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//-----------------------------------------------------------------------------
+// Headers
+//-----------------------------------------------------------------------------
+
+#include "s7lstklcd.h"
+#include "font.h"
+#include <board.h>
+#include <utility/assert.h>
+#include <utility/trace.h>
+
+//-----------------------------------------------------------------------------
+// Global functions
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+/// Switches a pixel on the SLCD on or off.
+/// \param x X-coordinate of pixel.
+/// \param y Y-coordinate of pixel.
+/// \param set If 1, pixel is displayed; otherwise it is hidden.
+//-----------------------------------------------------------------------------
+void S7LSTKLCD_Pixel(unsigned char x, unsigned char y, unsigned char set)
+{
+ unsigned int symbol = y * S7LSTKLCD_WIDTH + x;
+ unsigned int common = symbol / S7LSTKLCD_NUM_SEGMENTS;
+ unsigned int segment = symbol % S7LSTKLCD_NUM_SEGMENTS;
+ unsigned int reg = segment / 32;
+ unsigned int bit = segment % 32;
+
+ SANITY_CHECK(x < S7LSTKLCD_WIDTH);
+ SANITY_CHECK(y < S7LSTKLCD_HEIGHT);
+
+ if (set) {
+
+ AT91C_BASE_SLCDC->SLCDC_MEM[common * 2 + reg] |= (1 << bit);
+ }
+ else {
+
+ AT91C_BASE_SLCDC->SLCDC_MEM[common * 2 + reg] &= ~(1 << bit);
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Displays a character at the given position on the SLCD. The character is
+/// clipped according to the SLCD dimensions.
+/// Note that x and y can be negative (upper-left part of character will be
+/// clipped).
+/// \param x X-coordinate of upper-left corner of character.
+/// \param y Y-coordinate of upper-left corner of character.
+/// \param c Character to display.
+//-----------------------------------------------------------------------------
+void S7LSTKLCD_Char(signed int x, signed int y, unsigned char c)
+{
+ const unsigned char *pChar;
+ signed int i, j;
+
+ SANITY_CHECK(c >= gFont.firstCharacter);
+ SANITY_CHECK(c <= gFont.lastCharacter);
+
+ // Optimization: return if coordinates are out of bounds
+ if ((x > S7LSTKLCD_WIDTH) || ((x+gFont.width) < 0)
+ || (y > S7LSTKLCD_HEIGHT) || ((y+gFont.height) < 0)) {
+
+ return;
+ }
+
+ // Get pointer to character in font data
+ pChar = &(gFont.pData[(c - gFont.firstCharacter) * gFont.height]);
+
+ // Display character at requested location
+ for (j=0; j < gFont.height; j++) {
+ for (i=0; i < gFont.width; i++) {
+
+ if (((x+i) >= 0) && ((x+i) < S7LSTKLCD_WIDTH)
+ && ((y+i >= 0)) && ((y+i) < S7LSTKLCD_HEIGHT)) {
+
+ S7LSTKLCD_Pixel(x+i, y+j, (pChar[j] & (1 << (FONT_CHAR_MAX_WIDTH-i-1))));
+ }
+ }
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Displays a string on the SLCD given the top-left corner coordinates. String
+/// is clipped according to the SLCD dimensions.
+/// X and Y can be negative (top-left clipping).
+/// \param x X-coordinate of top-left corner.
+/// \param y Y-coordinate of top-left corner.
+/// \param pString String to display.
+//-----------------------------------------------------------------------------
+void S7LSTKLCD_String(signed int x, signed int y, const char *pString)
+{
+ signed int j;
+ while (*pString != 0) {
+
+ // Display character
+ S7LSTKLCD_Char(x, y, *pString);
+ x += gFont.width + 1;
+ pString++;
+
+ // Vertical blank line
+ if ((*pString != 0) && ((x-1) < S7LSTKLCD_WIDTH) && ((x-1) > 0)) {
+
+ for (j=0; j < gFont.height; j++) {
+
+ if (((j+y) >= 0) && ((j+y) < S7LSTKLCD_HEIGHT)) {
+
+ S7LSTKLCD_Pixel(x-1, y+j, 0);
+ }
+ }
+ }
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Returns the height and width in pixels of the given string.
+/// \param pString String to examinate.
+/// \param pWidth Width of string in pixels.
+/// \param pHeight Height of string in pixels.
+//-----------------------------------------------------------------------------
+void S7LSTKLCD_GetStringSize(
+ const char *pString,
+ signed int *pWidth,
+ signed int *pHeight)
+{
+ unsigned int size = 0;
+
+ // Get string size
+ while (*pString != 0) {
+
+ size++;
+ pString++;
+ }
+
+ // Return size in pixel
+ if (pWidth) {
+
+ *pWidth = size * (gFont.width + 1) - 1;
+ }
+ if (pHeight) {
+
+ *pHeight = gFont.height;
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Displays the given string on the SLCD, centered along the X and Y axis
+/// (this may result in the string being clipped).
+/// \param pString String to display.
+//-----------------------------------------------------------------------------
+void S7LSTKLCD_PutString(const char *pString)
+{
+ signed int width, height;
+ SANITY_CHECK(pString);
+
+ S7LSTKLCD_GetStringSize(pString, &width, &height);
+ S7LSTKLCD_String((S7LSTKLCD_WIDTH - width) / 2, (S7LSTKLCD_HEIGHT - height) / 2, pString);
+}
+
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