Add DMA and LiquidCrystal I2C support

- Implemented DMA functionality with a new dma.c and dma.h file. - Added LiquidCrystal I2C driver with liquidcrystal_i2c.c and liquidcrystal_i2c.h files. - Updated CMakeLists.txt to include dma.c and liquidcrystal_i2c.c in the build process. - Modified build.ninja and compile_commands.json to reflect the new source files. - Enhanced the main application to utilize the new DMA and LiquidCrystal I2C features.
2025-05-18 16:27:45 +02:00
parent f8c5650c95
commit 344d0000fa
18 changed files with 814 additions and 105 deletions
@@ -0,0 +1,88 @@
+#ifndef LIQUIDCRYSTAL_I2C_H_
+#define LIQUIDCRYSTAL_I2C_H_
+
+#include "stm32f1xx_hal.h"
+
+/* Command */
+#define LCD_CLEARDISPLAY 0x01
+#define LCD_RETURNHOME 0x02
+#define LCD_ENTRYMODESET 0x04
+#define LCD_DISPLAYCONTROL 0x08
+#define LCD_CURSORSHIFT 0x10
+#define LCD_FUNCTIONSET 0x20
+#define LCD_SETCGRAMADDR 0x40
+#define LCD_SETDDRAMADDR 0x80
+
+/* Entry Mode */
+#define LCD_ENTRYRIGHT 0x00
+#define LCD_ENTRYLEFT 0x02
+#define LCD_ENTRYSHIFTINCREMENT 0x01
+#define LCD_ENTRYSHIFTDECREMENT 0x00
+
+/* Display On/Off */
+#define LCD_DISPLAYON 0x04
+#define LCD_DISPLAYOFF 0x00
+#define LCD_CURSORON 0x02
+#define LCD_CURSOROFF 0x00
+#define LCD_BLINKON 0x01
+#define LCD_BLINKOFF 0x00
+
+/* Cursor Shift */
+#define LCD_DISPLAYMOVE 0x08
+#define LCD_CURSORMOVE 0x00
+#define LCD_MOVERIGHT 0x04
+#define LCD_MOVELEFT 0x00
+
+/* Function Set */
+#define LCD_8BITMODE 0x10
+#define LCD_4BITMODE 0x00
+#define LCD_2LINE 0x08
+#define LCD_1LINE 0x00
+#define LCD_5x10DOTS 0x04
+#define LCD_5x8DOTS 0x00
+
+/* Backlight */
+#define LCD_BACKLIGHT 0x08
+#define LCD_NOBACKLIGHT 0x00
+
+/* Enable Bit */
+#define ENABLE 0x04
+
+/* Read Write Bit */
+#define RW 0x0
+
+/* Register Select Bit */
+#define RS 0x01
+
+/* Device I2C Address */
+#define DEVICE_ADDR     (0x27 << 1)
+
+void HD44780_Init(uint8_t rows);
+void HD44780_Clear();
+void HD44780_Home();
+void HD44780_NoDisplay();
+void HD44780_Display();
+void HD44780_NoBlink();
+void HD44780_Blink();
+void HD44780_NoCursor();
+void HD44780_Cursor();
+void HD44780_ScrollDisplayLeft();
+void HD44780_ScrollDisplayRight();
+void HD44780_PrintLeft();
+void HD44780_PrintRight();
+void HD44780_LeftToRight();
+void HD44780_RightToLeft();
+void HD44780_ShiftIncrement();
+void HD44780_ShiftDecrement();
+void HD44780_NoBacklight();
+void HD44780_Backlight();
+void HD44780_AutoScroll();
+void HD44780_NoAutoScroll();
+void HD44780_CreateSpecialChar(uint8_t, uint8_t[]);
+void HD44780_PrintSpecialChar(uint8_t);
+void HD44780_SetCursor(uint8_t, uint8_t);
+void HD44780_SetBacklight(uint8_t new_val);
+void HD44780_LoadCustomCharacter(uint8_t char_num, uint8_t *rows);
+void HD44780_PrintStr(const char[]);
+
+#endif /* LIQUIDCRYSTAL_I2C_H_ */