Wim Huiskamp
Updated for more display types. Fixed memoryaddress confusion in address() method. Added new getAddress() method. Added support for UDCs, Backlight control and other features such as control through I2C and SPI port expanders and controllers with native I2C and SPI interfaces. Refactored to fix issue with pins that are default declared as NC.
Dependents: GPSDevice TestTextLCD SD to Flash Data Transfer DrumMachine ... more
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TextLCD
by 
Simon Ford
Example
Hello World! for the TextLCD
#include "mbed.h"
#include "TextLCD.h"
// Host PC Communication channels
Serial pc(USBTX, USBRX); // tx, rx
// I2C Communication
I2C i2c_lcd(p28,p27); // SDA, SCL
// SPI Communication
SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
//TextLCD lcd(p15, p16, p17, p18, p19, p20); // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780
//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, 74595 expander, CS pin, LCD Type
TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type
//TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type
//TextLCD_SPI_N lcd(&spi_lcd, p8, p9); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032_3V3
//TextLCD_I2C_N lcd(&i2c_lcd, ST7032_SA, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3); // I2C bus, Slaveaddress, LCD Type, BL=NC, LCDTCtrl=ST7032_3V3
int main() {
pc.printf("LCD Test. Columns=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
for (int row=0; row<lcd.rows(); row++) {
int col=0;
pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
// lcd.putc('-');
lcd.putc('0' + row);
for (col=1; col<lcd.columns()-1; col++) {
lcd.putc('*');
}
pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
lcd.putc('+');
}
// Show cursor as blinking character
lcd.setCursor(TextLCD::CurOff_BlkOn);
// Set and show user defined characters. A maximum of 8 UDCs are supported by the HD44780.
// They are defined by a 5x7 bitpattern.
lcd.setUDC(0, (char *) udc_0); // Show |>
lcd.putc(0);
lcd.setUDC(1, (char *) udc_1); // Show <|
lcd.putc(1);
}
Handbook page
More info is here
Diff: TextLCD_UTF8.inc
- Revision:
- 41:111ca62e8a59
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD_UTF8.inc Fri Nov 06 18:59:27 2015 +0000
@@ -0,0 +1,124 @@
+/* mbed TextLCD Library, for LCDs based on HD44780 controllers
+ * Copyright (c) 2015, WH
+ * 2015, v01: WH, AR. Added UTF8 decode tables for Cyrilic font (by Andriy Ribalko).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MBED_TEXTLCDUTF8_INC
+#define MBED_TEXTLCDUTF8_INC
+
+#include "TextLCD_Config.h"
+
+#if(LCD_UTF8_FONT == 1)
+// Code by Andriy Ribalko
+// UTF8 conversion, please add other tables for your language
+// See wikipedia.org/wiki/UTF-8 and www.utf8-chartable.de
+
+//The two tables below are used to map UTF8 codes onto character codes for an LCD controller that
+//supports a specific fonttable. The UTF codes for a specific language like Cyrilic are between 0x0400 and 0x04FF.
+
+//Select one table for a specific controller and language
+
+#if(0)
+//Table for controller xxxx
+//The two tables below are used to map Cyrilic/Russian UTF8 codes onto character codes for an LCD controller that
+//supports a Cyrilic fonttable. The UTF codes for Cyrilic are between 0x0400 and 0x04FF
+
+#define UTF_FIRST 0x0400
+#define UTF_LAST 0x04FF
+#define UTF_SEQ_REC_FIRST utf_seq_rec_first_cyr
+#define UTF_SEQ_REC_LAST utf_seq_rec_last_cyr
+#define UTF_SEQ_RECODE utf_seq_recode_cyr
+#define UTF_RND_RECODE utf_rnd_recode_cyr
+
+#define utf_seq_rec_first_cyr 0x0410 //UTF code of first symbol in sequential table UTF_recode
+#define utf_seq_rec_last_cyr 0x044F //UTF code of last symbol in sequential table UTF_recode
+
+const char utf_seq_recode_cyr[] = {
+ 0x41,0xa0,0x42,0xa1, 0xe0,0x45,0xa3,0xa4, 0xa5,0xa6,0x4b,0xa7, 0x4d,0x48,0x4f,0xa8, //Upper case Cyrillic
+ 0x50,0x43,0x54,0xa9, 0xaa,0x58,0xe1,0xab, 0xac,0xe2,0xad,0xae, 0x62,0xaf,0xb0,0xb1,
+ 0x61,0xb2,0xb3,0xb4, 0xe3,0x65,0xb6,0xb7, 0xb8,0xb9,0xba,0xbb, 0xbc,0xbd,0x6f,0xbe, //Lower case Cyrillic
+ 0x70,0x63,0xbf,0x79, 0xe4,0x78,0xe5,0xc0, 0xc1,0xe6,0xc2,0xc3, 0xc4,0xc5,0xc6,0xc7
+ };
+
+//Two dimensional table for some non-sequential symbol decoding (RUS/UKR)
+//U+0401 --> 0xa2 (Ё), U+0451 --> 0xb5 (ё), U+0406 --> 0x49 (І), U+0456 --> 0x69 (і)
+const short int utf_rnd_recode_cyr [5][2]= {
+ {0x0401, 0xa2},
+ {0x0451, 0xb5},
+ {0x0406, 0x49},
+ {0x0456, 0x69},
+ {0} //Last element table zero
+ };
+#endif
+
+#if(LCD_UTF8_CYR_B == 1)
+//ROM_B Table for controller SSD1803 and US2066
+//The two tables below are used to map Cyrilic/Russian UTF8 codes onto character codes for an LCD controller that
+//supports a Cyrilic fonttable. The UTF codes for Cyrilic are between 0x0400 and 0x04FF
+
+#define UTF_FIRST 0x0400
+#define UTF_LAST 0x04FF
+#define UTF_SEQ_REC_FIRST utf_seq_rec_first_cyr
+#define UTF_SEQ_REC_LAST utf_seq_rec_last_cyr
+#define UTF_SEQ_RECODE utf_seq_recode_cyr
+#define UTF_RND_RECODE utf_rnd_recode_cyr
+
+#define utf_seq_rec_first_cyr 0x0410 //UTF code of first symbol in sequential table UTF_recode
+#define utf_seq_rec_last_cyr 0x044F //UTF code of last symbol in sequential table UTF_recode
+const char utf_seq_recode_cyr[] = {
+ 0x80,0x81,0x82,0x83, 0x84,0x85,0x86,0x87, 0x88,0x89,0x8A,0x8B, 0x8C,0x8D,0x8E,0x8F, //Upper case Cyrillic
+ 0x90,0x91,0x92,0x93, 0x94,0x95,0x96,0x97, 0x98,0x99,0x9A,0x9B, 0x9C,0x9D,0x9E,0x9F,
+ 0x61,0x81,0x62,0x83, 0x84,0x65,0x86,0x87, 0x88,0x89,0x6B,0x8B, 0x6D,0x69,0x6F,0x8F, //Lower case Cyrillic (~Upper)
+ 0x70,0x63,0x92,0x79, 0x94,0x95,0x96,0x97, 0x98,0x99,0x9A,0x9B, 0x9C,0x9D,0x9E,0x9F
+ };
+
+//Two dimensional table for some non-sequential symbol decoding (RUS/UKR)
+//U+0400 --> 0xC8 (E)
+//U+0401 --> 0xCB (Ё)
+//U+0405 --> 0x53 (S)
+//U+0406 --> 0x49 (І)
+//U+0407 --> 0xCF (І)
+//U+0408 --> 0x4A (J)
+//U+0450 --> 0xE8 ( )
+//U+0451 --> 0xEB (ё)
+//U+0456 --> 0x69 (і)
+//U+0457 --> 0xCF (і)
+//U+0458 --> 0x6A (j)
+const short int utf_rnd_recode_cyr [][2]= {
+ {0x0400, 0xC8},
+ {0x0401, 0xCB},
+ {0x0405, 0x53},
+ {0x0406, 0x49},
+ {0x0407, 0xCF},
+ {0x0408, 0x4A},
+ {0x0450, 0xE8},
+ {0x0451, 0xEB},
+ {0x0456, 0x69},
+ {0x0457, 0xCF},
+ {0x0458, 0x6A},
+ {0 , 0} //Last element table zero
+ };
+#endif
+
+
+//end UTF conversion
+#endif
+
+#endif
\ No newline at end of file
HD44780 and compatible Text LCD controllers (4bit, I2C or SPI I/F)