WebSVN - Projects - Diff - Rev 757 and 761 - /C-OSD/trunk/max7456_software

  *   Free Software Foundation, Inc.,                                        *
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
  ****************************************************************************/
-#include <avr/io.h>
 #include <avr/io.h>
 #include <util/delay.h>
 #include <avr/pgmspace.h>
 #include <string.h>
 #include <stdlib.h>
     // end sending
     MAX_CS_HIGH
-}
+}
 /**
  *  write a <character> to <address> of MAX7456 display memory
  */
 void write_char(uint16_t address, char character) {
     spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH
     spi_send_byte(0x06, (address & 0x00FF)); // DMAL
-    spi_send_byte(0x07, character); // DMDI
     spi_send_byte(0x07, character); // DMDI
+}
 /**
  *  clear display memory
  *  (also sets 8bit mode)
  */
 void clear(void) {
     /*uint16_t memory_address = 0;
     for (unsigned int a = 0; a < 480; a++) {
         write_char(memory_address++, 0);
     }*/
-        // clear all display-mem (DMM)
+    // clear all display-mem (DMM)
     spi_send_byte(0x04, 0b01000100);
+    // clearing takes 12uS according to maxim so lets wait longer
-    // clearing takes 12uS according to maxim so lets wait longer
+    _delay_us(20);
     _delay_us(20);
 #if (ALLCHARSDEBUG|(WRITECHARS != -1))
 #if (ALLCHARSDEBUG|(WRITECHARS != -1))
 /**
  * for testing write all chars to screen
  */
 void write_all_chars() {
     uint16_t x = 3, y = 2, t = 0;
     while (t < 256) {
     else if (c == '.') c = 65; // remap
     else if (c == '-') c = 73; // remap minus
     else if (c == ';') c = 67; // remap
     else if (c == ':') c = 68; // remap
     else if (c == ',') c = 69; // remap
-//    else if (c == '?') c = 66; // remap
+        //    else if (c == '?') c = 66; // remap
-//    else if (c == '\'') c = 70; // remap
+        //    else if (c == '\'') c = 70; // remap
     else if (c == '/') c = 71; // remap
-//    else if (c == '"') c = 72; // remap
+    //    else if (c == '"') c = 72; // remap
-//    else if (c == '<') c = 74; // remap
+    //    else if (c == '<') c = 74; // remap
-//    else if (c == '>') c = 75; // remap
+    //    else if (c == '>') c = 75; // remap
-//    else if (c == '@') c = 76; // remap
+    //    else if (c == '@') c = 76; // remap
     write_char(address, c);
+}
 /**
 /**
  *  write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory
  */
 void write_ascii_string_pgm(uint8_t x, uint8_t y, const char *string) {
-        while (pgm_read_byte(string) != 0x00)
+    while (pgm_read_byte(string) != 0x00)
-                write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++));
+        write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++));
+}
 /**
  *  write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory
  */
 void write_string_pgm_down(uint8_t x, uint8_t y, const char *string, uint8_t length) {
-        while (length--)
+    while (length--)
-                write_char((x+(y++ * 30)), pgm_read_byte(string++));
+        write_char((x + (y++ * 30)), pgm_read_byte(string++));
+}
 /**
  * Write a unsigned <number> at <x>/<y> to MAX7456 display memory
  * <length> represents the length to rightbound the number
  * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
  */
 void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) {
-        itoa(number, conv_array, 10 );
+    itoa(number, conv_array, 10);
-        for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
+    for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
-                if (pad) write_char((x++)+(y * 30), 10);
+        if (pad) write_char((x++)+(y * 30), 10);
-                else write_ascii_char((x++)+(y * 30), 0);
+        else write_ascii_char((x++)+(y * 30), 0);
+    }
-        write_ascii_string(x,  y, conv_array);
+    write_ascii_string(x, y, conv_array);
+}
 /**
  * Write a signed <number> at <x>/<y> to MAX7456 display memory
  * <length> represents the length to rightbound the number
  * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
  */
 void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) {
-        itoa(number, conv_array, 10 );
+    itoa(number, conv_array, 10);
-        for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
+    for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
-                if (pad) write_char((x++)+(y * 30), 10);
+        if (pad) write_char((x++)+(y * 30), 10);
-                else write_ascii_char((x++)+(y * 30), 0);
+        else write_ascii_char((x++)+(y * 30), 0);
+    }
-        write_ascii_string(x,  y, conv_array);
+    write_ascii_string(x, y, conv_array);
+}
 /**
  * Write a unsigned <number> at <x>/<y> to MAX7456 display memory as /10th of value
  * <length> represents the length to rightbound the number
  * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
  */
 void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) {
-        itoa(number, conv_array, 10 );
+    itoa(number, conv_array, 10);
-        uint8_t len = strlen(conv_array);
+    uint8_t len = strlen(conv_array);
-        for (uint8_t i = 0; i < length - len; i++) {
+    for (uint8_t i = 0; i < length - len; i++) {
-                if (pad) write_char((x++)+(y * 30), 10); //  zero
+        if (pad) write_char((x++)+(y * 30), 10); //  zero
-                else write_char((x++)+(y * 30), 0); // blank
+        else write_char((x++)+(y * 30), 0); // blank
-        }
+    }
-        char rest = conv_array[len - 1];
+    char rest = conv_array[len - 1];
-        conv_array[len - 1] = 0;
+    conv_array[len - 1] = 0;
-        if (len == 1) {
+    if (len == 1) {
-                write_char((x-1)+(y * 30), 10); // zero
+        write_char((x - 1)+(y * 30), 10); // zero
-        } else if (len == 2 && conv_array[0] == '-') {
+    } else if (len == 2 && conv_array[0] == '-') {
-                write_char((x-1)+(y * 30), 0x49); // minus
+        write_char((x - 1)+(y * 30), 0x49); // minus
-                write_char((x)+(y * 30), 10); // zero
+        write_char((x)+(y * 30), 10); // zero
-        } else {
+    } else {
-                write_ascii_string(x,  y, conv_array);
+        write_ascii_string(x, y, conv_array);
+    }
-        x += len - 1;
+    x += len - 1;
-        write_char((x++)+(y * 30), 65); // decimal point
+    write_char((x++)+(y * 30), 65); // decimal point
-        write_ascii_char((x++)+(y * 30), rest); // after dot
+    write_ascii_char((x++)+(y * 30), rest); // after dot
+}
 /**
  * Write a signed <number> at <x>/<y> to MAX7456 display memory as /10th of value
  * <length> represents the length to rightbound the number
  * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
  */
 void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) {
-        itoa(number, conv_array, 10 );
+    itoa(number, conv_array, 10);
-        uint8_t len = strlen(conv_array);
+    uint8_t len = strlen(conv_array);
-        for (uint8_t i = 0; i < length - len; i++) {
+    for (uint8_t i = 0; i < length - len; i++) {
-                if (pad) write_char((x++)+(y * 30), 10); //  zero
+        if (pad) write_char((x++)+(y * 30), 10); //  zero
-                else write_char((x++)+(y * 30), 0); // blank
+        else write_char((x++)+(y * 30), 0); // blank
-        }
+    }
-        char rest = conv_array[len - 1];
+    char rest = conv_array[len - 1];
-        conv_array[len - 1] = 0;
+    conv_array[len - 1] = 0;
-        if (len == 1) {
+    if (len == 1) {
-                write_char((x-1)+(y * 30), 10); // zero
+        write_char((x - 1)+(y * 30), 10); // zero
-        } else if (len == 2 && conv_array[0] == '-') {
+    } else if (len == 2 && conv_array[0] == '-') {
-                write_char((x-1)+(y * 30), 0x49); // minus
+        write_char((x - 1)+(y * 30), 0x49); // minus
-                write_char((x)+(y * 30), 10); // zero
+        write_char((x)+(y * 30), 10); // zero
-        } else {
+    } else {
-                write_ascii_string(x,  y, conv_array);
+        write_ascii_string(x, y, conv_array);
+    }
-        x += len - 1;
+    x += len - 1;
 /**
  * wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude
  */
 void write_gps_pos(uint8_t x, uint8_t y, int32_t position) {
-        if (position < 0) {
+    if (position < 0) {
-                position ^= ~0;
+        position ^= ~0;
-                position++;
+        position++;
-                write_char_xy(x++, y, 0x49); // minus
+        write_char_xy(x++, y, 0x49); // minus
-        } else {
+    } else {
-                write_char_xy(x++, y, 0); // clear ('+' would be nice, maybe later)
+        write_char_xy(x++, y, 0); // clear ('+' would be nice, maybe later)
-        }
+    }
-        write_ndigit_number_u(x, y, (uint16_t) (position / (int32_t) 10000000), 3, 1);
+    write_ndigit_number_u(x, y, (uint16_t)(position / (int32_t)10000000), 3, 1);
-        write_char_xy(x + 3, y, 65); // decimal point
+    write_char_xy(x + 3, y, 65); // decimal point
-        position = position - ((position / (int32_t) 10000000) * (int32_t) 10000000);
+    position = position - ((position / (int32_t)10000000) * (int32_t)10000000);
-        write_ndigit_number_u(x + 4, y, (uint16_t) (position / (int32_t) 1000), 4, 1);
+    write_ndigit_number_u(x + 4, y, (uint16_t)(position / (int32_t)1000), 4, 1);
-        position = position - ((uint16_t) (position / (int32_t) 1000) * (int32_t) 1000);
+    position = position - ((uint16_t)(position / (int32_t)1000) * (int32_t)1000);
-        write_ndigit_number_u(x + 8, y, (uint16_t) position, 3, 1);
+    write_ndigit_number_u(x + 8, y, (uint16_t)position, 3, 1);
-        write_char_xy(x + 11, y, 0xD0); // degree symbol
+    write_char_xy(x + 11, y, 0xD0); // degree symbol
+}

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(root)/C-OSD/trunk/max7456_software_spi.c - Rev 757 → 761