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https://github.com/IcedRooibos/py32f0-template.git
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128 lines
5.0 KiB
C
Executable File
128 lines
5.0 KiB
C
Executable File
// Copyright 2021 IOsetting <iosetting(at)outlook.com>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/*-------------------------------------------------------------
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* Instruction D7 D6 D5 D4 D3 D2 D1 D0
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* ==============================================
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* Display clear 0 0 0 0 0 0 0 1
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* Cursor home 0 0 0 0 0 0 1 *
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* Entry Mode Set 0 0 0 0 0 1 I/D S
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* Display On/Off 0 0 0 0 1 D C B
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* Curs/Disp shift 0 0 0 1 S/C R/L * *
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* Function Set 0 0 1 DL N F * *
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* CG RAM addr set 0 1 ---------Acg---------
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* DD RAM addr set 1 -------------Add---------
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*
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* Meaning:
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* * - nonvalid bit
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* Acg - CG RAM address (CHARACTER GENERATOR)
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* Add - DD RAM address (DATA DISPLAY)
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* AC - adress counter
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*
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* I/D - 1-increment, 0-decrement
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* S - 1-display shift, 0-no display shift
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* D - 1-display ON, 0-display OFF
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* C - 1-cursor ON, 0-cursor OFF
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* B - 1-blink ON, 0-blink OFF
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* S/C - 1-display shift, 0-cursor movement
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* R/L - 1-right shift, 0-left shift
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* DL - 1-8 bits data transfer, 0-4 bits data transfer
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* N - 1-two lines, 0-one line
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* F - 1-5x10 dot matrix, 0-5x8 dot matrix
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* BF - 1-internal operation in progress, 0-display ready
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*
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\**************************************************************/
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#ifndef __PCF8574_LCD_H__
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#define __PCF8574_LCD_H__
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/* C++ detection */
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#ifdef __cplusplus
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extern C {
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include "main.h"
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/* I2C address
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* - 7 bit slave address, left aligned, bits 7:1 are used, LSB bit is not used
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* - 0x4E or 0x7E
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*/
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#define LCD1602_I2C_ADDR 0x7E
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/* Delay in millisecond */
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#define LCD1602_DELAY 5
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/* Register selection */
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#define PIN_RS (1 << 0)
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/* Read/Write */
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#define PIN_RW (1 << 1)
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/* Chip enable */
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#define PIN_EN (1 << 2)
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/* Back light - might not be available on some PCF8574 modules */
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#define BACKLIGHT (1 << 3)
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/* Clear display */
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#define LCD1602_CMD_CLEAR_DISPLAY 0b00000001
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/* Move cursor home */
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#define LCD1602_CMD_HOME 0b00000010
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// Entry Mode, Set cursor/display moving direction
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#define LCD1602_CMD_DIRECTION_RIGHT 0b00000110
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#define LCD1602_CMD_DIRECTION_LEFT 0b00000100
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#define LCD1602_CMD_DIRECTION_RIGHT_SHIFT 0b00000111
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#define LCD1602_CMD_DIRECTION_LEFT_SHIFT 0b00000101
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// Display mode
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#define LCD1602_CMD_MODE_OFF 0b00001000
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#define LCD1602_CMD_MODE_ON_CURSOR_OFF 0b00001100
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#define LCD1602_CMD_MODE_ON_CURSOR_ON 0b00001110
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#define LCD1602_CMD_MODE_ON_CURSOR_BLNK 0b00001111
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// Cursor/Display Shift
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#define LCD1602_CMD_CURSOR_MOVE_LEFT 0b00010000
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#define LCD1602_CMD_CURSOR_MOVE_RIGHT 0b00010100
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#define LCD1602_CMD_DISPLAY_SHIFT_LEFT 0b00011000
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#define LCD1602_CMD_DISPLAY_SHIFT_RIGHT 0b00011100
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/* Function set: 4-bit, 1 row, 5X8 matrix */
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#define LCD1602_CMD_FUNC_4B_1L_5X8 0b00100000
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/* Function set: 4-bit, 2 row, 5X8 matrix */
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#define LCD1602_CMD_FUNC_4B_2L_5X8 0b00101000
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/* Function set: 8-bit, 1 row, 5X8 matrix */
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#define LCD1602_CMD_FUNC_8B_1L_5X8 0b00110000
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/* Function set: 8-bit, 2 row, 5X8 matrix */
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#define LCD1602_CMD_FUNC_8B_2L_5X8 0b00111000
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/* Set/Read CGRAM address */
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#define LCD1602_CMD_CGRAM_ADDR 0b01000000
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/* Set/Read DDRAM address */
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#define LCD1602_CMD_DDRAM_ADDR 0b10000000
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/* First row address */
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#define LCD1602_DDRAM_ROW0 0b10000000
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/* Second row address */
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#define LCD1602_DDRAM_ROW1 0b11000000
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void LCD_SendCommand(uint8_t lcd_addr, uint8_t cmd);
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void LCD_SendData(uint8_t lcd_addr, uint8_t data);
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void LCD_Init(uint8_t lcd_addr);
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void LCD_SendString(uint8_t lcd_addr, char *str);
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void LCD_SetCGRAM(uint8_t lcd_addr, uint8_t char_addr, const uint8_t *char_font);
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/* C++ detection */
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#ifdef __cplusplus
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}
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#endif
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#endif
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