file cleanup, better text, documentation

1 files changed, 0 insertions, 188 deletions

diff --git a/src/lcd.c.bak b/src/lcd.c.bak
deleted file mode 100644
index 8229041..0000000
--- a/src/lcd.c.bak
+++ /dev/null
@@ -1,188 +0,0 @@
-/**
- * @file lcd.c
- * A basic library for writing a 16x2 text LCD.
- *
- * Copyright (C) 2018 Clyne Sullivan
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
- */
-
-#include <lcd.h>
-#include <clock.h>
-#include <gpio.h>
-#include <string.h>
-
-//#define USE_DELAY
-
-#define LCD_D0 GPIO_PORT(A, 0)
-#define LCD_D1 GPIO_PORT(A, 1)
-#define LCD_D2 GPIO_PORT(A, 4)
-#define LCD_D3 GPIO_PORT(B, 0)
-#define LCD_D4 GPIO_PORT(C, 1)
-#define LCD_D5 GPIO_PORT(C, 0)
-#define LCD_D6 GPIO_PORT(C, 2)
-#define LCD_D7 GPIO_PORT(C, 3)
-#define LCD_E  GPIO_PORT(C, 12)
-#define LCD_RS GPIO_PORT(C, 10)
-
-#define lcd_data() gpio_dout(LCD_RS, 1)
-
-void lcd_pulse(void)
-{
-	gpio_dout(LCD_E, 1);
-#ifdef USE_DELAY
-	delay(1);
-#else
-	for (uint16_t i = 0; i < 10000; i++)
-		asm("");
-#endif // USE_DELAY
-	gpio_dout(LCD_E, 0);
-}
-
-void lcd_byte(uint8_t byte)
-{
-	gpio_dout(LCD_D0, byte & 0x01);
-	gpio_dout(LCD_D1, byte & 0x02);
-	gpio_dout(LCD_D2, byte & 0x04);
-	gpio_dout(LCD_D3, byte & 0x08);
-	gpio_dout(LCD_D4, byte & 0x10);
-	gpio_dout(LCD_D5, byte & 0x20);
-	gpio_dout(LCD_D6, byte & 0x40);
-	gpio_dout(LCD_D7, byte & 0x80);
-}
-
-void lcd_cmd(uint8_t cmd)
-{
-	gpio_dout(LCD_RS, 0);
-	lcd_byte(cmd);
-	lcd_pulse();
-}
-
-void lcd_putchar(int c)
-{
-	lcd_data();
-	lcd_byte((uint8_t)c);
-	lcd_pulse();
-}
-
-static int lcd_index = 0;
-void lcd_puts(const char *s)
-{
-	lcd_cmd(0x06);
-	while (*s) {
-		lcd_putchar(*s++);
-		if (++lcd_index == 0x10) {
-			lcd_cmd(0x80 | 0x40);
-		} else if (lcd_index == 0x20) {
-			lcd_cmd(0x80);
-			lcd_index = 0;
-		}
-	}
-}
-
-extern char *itoa(int n, int base);
-void lcd_puti(int i)
-{
-	lcd_puts(itoa(i, 10));
-}
-
-void lcd_puth(int h)
-{
-	lcd_puts(itoa(h, 16));
-}
-
-void lcd_putb(uint8_t b)
-{
-	lcd_puts(itoa(b, 2));
-}
-
-void lcd_clear(void)
-{
-	lcd_cmd(0x01);
-	delay(2);
-	lcd_index = 0;
-}
-
-void lcd_init(void)
-{
-	gpio_mode(LCD_D0, OUTPUT);
-	gpio_mode(LCD_D1, OUTPUT);
-	gpio_mode(LCD_D2, OUTPUT);
-	gpio_mode(LCD_D3, OUTPUT);
-	gpio_mode(LCD_D4, OUTPUT);
-	gpio_mode(LCD_D5, OUTPUT);
-	gpio_mode(LCD_D6, OUTPUT);
-	gpio_mode(LCD_D7, OUTPUT);
-	gpio_mode(LCD_E,  OUTPUT);
-	gpio_mode(LCD_RS, OUTPUT);
-	gpio_dout(LCD_D0, 0);
-	gpio_dout(LCD_D1, 0);
-	gpio_dout(LCD_D2, 0);
-	gpio_dout(LCD_D3, 0);
-	gpio_dout(LCD_D4, 0);
-	gpio_dout(LCD_D5, 0);
-	gpio_dout(LCD_D6, 0);
-	gpio_dout(LCD_D7, 0);
-	gpio_dout(LCD_E,  0);
-	gpio_dout(LCD_RS, 0);
-
-	lcd_cmd(0x38);
-	lcd_cmd(0x10);
-	lcd_cmd(0x0D);
-	delay(5);
-	lcd_clear();
-}
-
-/**
- * Task code
- */
-
-volatile int bufpos = 0;
-volatile char buf[32];
-volatile uint8_t using = 0;
-
-void lcd_clearbuf(void)
-{
-	bufpos = 0;
-	for (int i = 0; i < 32; i++)
-		buf[i] = 0;
-}
-
-void lcd_put(const char *s)
-{
-	int len = strlen(s);
-	int i;
-
-	using = 1;
-	for (i = 0; i < len; bufpos++, i++) {
-		if (bufpos > 31)
-			bufpos = 0;
-		buf[bufpos] = s[i];
-	}
-	using = 0;
-}
-
-void lcd_handler(void)
-{
-	lcd_init();
-	lcd_clearbuf();
-
-	while (1) {
-		if (!using && buf[0] != '\0') {
-			lcd_puts(buf);
-			lcd_clearbuf();
-		}
-		delay(100);
-	}
-}