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 *   along with this program; if not, write to the                          *
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 *   along with this program; if not, write to the                          *
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 *   Free Software Foundation, Inc.,                                        *
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 *   Free Software Foundation, Inc.,                                        *
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
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 ****************************************************************************/
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 ****************************************************************************/
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#include "main.h"
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#include <avr/io.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include <util/delay.h>
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#include <avr/pgmspace.h> 
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#include <avr/pgmspace.h> 
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#include <string.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include "main.h"
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#include "max7456_software_spi.h"
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#include "max7456_software_spi.h"
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char conv_array[7]; // general array for number -> char conversation
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char conv_array[7]; // general array for number -> char conversation
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int pow(int a, int b) {
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    if (b <= 0) return 1;
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    int res = 1;
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    while (b-- > 0) res *= a;
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    return res;
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}
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/* ##########################################################################
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/* ##########################################################################
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 * MAX7456 SPI & Display stuff
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 * MAX7456 SPI & Display stuff
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 * ##########################################################################*/
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 * ##########################################################################*/
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/**
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/**
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 * Write a unsigned <number> at <x>/<y> to MAX7456 display memory
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 * Write a unsigned <number> at <x>/<y> to MAX7456 display memory
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 * <length> represents the length to rightbound the number
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 * <length> represents the length to rightbound the number
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 */
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 */
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void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) {
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void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) {
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    if (number >= pow(10, length)) {
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        number = pow(10, length) - 1;
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    }
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    itoa(number, conv_array, 10);
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    itoa(number, conv_array, 10);
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    for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
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    for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
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        if (pad) write_char((x++)+(y * 30), 10);
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        if (pad) write_char((x++)+(y * 30), 10);
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        else write_ascii_char((x++)+(y * 30), 0);
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        else write_ascii_char((x++)+(y * 30), 0);
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    }
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    }
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 * Write a signed <number> at <x>/<y> to MAX7456 display memory
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 * Write a signed <number> at <x>/<y> to MAX7456 display memory
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 * <length> represents the length to rightbound the number
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 * <length> represents the length to rightbound the number
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 */
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 */
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void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) {
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void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) {
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    if (number <= -pow(10, length)) {
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        number = -pow(10, length) + 1;
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    } else if (number >= pow(10, length)) {
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        number = pow(10, length) - 1;
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    }
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    itoa(number, conv_array, 10);
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    itoa(number, conv_array, 10);
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    if (strlen(conv_array) < length) {
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    for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
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        for (uint8_t i = 0; i < length - strlen(conv_array); i++) {
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        if (pad) write_char((x++)+(y * 30), 10);
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            if (pad) write_char((x++)+(y * 30), 10);
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        else write_ascii_char((x++)+(y * 30), 0);
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            else write_ascii_char((x++)+(y * 30), 0);
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        }
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    }
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    }
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    write_ascii_string(x, y, conv_array);
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    write_ascii_string(x, y, conv_array);
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}
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}
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/**
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/**
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 * Write a unsigned <number> at <x>/<y> to MAX7456 display memory as /10th of value
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 * Write a unsigned <number> at <x>/<y> to MAX7456 display memory as /10th of value
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 * <length> represents the length to rightbound the number
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 * <length> represents the length to rightbound the number
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 */
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 */
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void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) {
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void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) {
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    if (number >= pow(10, length)) {
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        number = pow(10, length) - 1;
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    }
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    itoa(number, conv_array, 10);
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    itoa(number, conv_array, 10);
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    uint8_t len = strlen(conv_array);
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    uint8_t len = strlen(conv_array);
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    for (uint8_t i = 0; i < length - len; i++) {
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    for (uint8_t i = 0; i < length - len; i++) {
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        if (pad) write_char((x++)+(y * 30), 10); //  zero
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        if (pad) write_char((x++)+(y * 30), 10); //  zero
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        else write_char((x++)+(y * 30), 0); // blank
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        else write_char((x++)+(y * 30), 0); // blank
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 * Write a signed <number> at <x>/<y> to MAX7456 display memory as /10th of value
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 * Write a signed <number> at <x>/<y> to MAX7456 display memory as /10th of value
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 * <length> represents the length to rightbound the number
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 * <length> represents the length to rightbound the number
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of   7
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 */
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 */
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void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) {
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void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) {
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    if (number >= pow(10, length)) {
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        number = pow(10, length) - 1;
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    }
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    itoa(number, conv_array, 10);
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    itoa(number, conv_array, 10);
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    uint8_t len = strlen(conv_array);
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    uint8_t len = strlen(conv_array);
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    for (uint8_t i = 0; i < length - len; i++) {
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    for (uint8_t i = 0; i < length - len; i++) {
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        if (pad) write_char((x++)+(y * 30), 10); //  zero
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        if (pad) write_char((x++)+(y * 30), 10); //  zero
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        else write_char((x++)+(y * 30), 0); // blank
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        else write_char((x++)+(y * 30), 0); // blank