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-rw-r--r--platforms/avr/drivers/analog.c138
-rw-r--r--platforms/avr/drivers/analog.h53
-rw-r--r--platforms/avr/drivers/glcdfont.c23
-rw-r--r--platforms/avr/drivers/hd44780.c536
-rw-r--r--platforms/avr/drivers/hd44780.h348
-rw-r--r--platforms/avr/drivers/i2c_master.c241
-rw-r--r--platforms/avr/drivers/i2c_master.h43
-rw-r--r--platforms/avr/drivers/i2c_slave.c111
-rw-r--r--platforms/avr/drivers/i2c_slave.h41
-rw-r--r--platforms/avr/drivers/serial.c529
-rw-r--r--platforms/avr/drivers/spi_master.c180
-rw-r--r--platforms/avr/drivers/spi_master.h59
-rw-r--r--platforms/avr/drivers/ssd1306.c319
-rw-r--r--platforms/avr/drivers/ssd1306.h87
-rw-r--r--platforms/avr/drivers/uart.c170
-rw-r--r--platforms/avr/drivers/uart.h35
-rw-r--r--platforms/avr/drivers/ws2812.c176
-rw-r--r--platforms/avr/drivers/ws2812_i2c.c27
-rw-r--r--platforms/avr/flash.mk179
19 files changed, 3295 insertions, 0 deletions
diff --git a/platforms/avr/drivers/analog.c b/platforms/avr/drivers/analog.c
new file mode 100644
index 0000000000..8d299ffdb9
--- /dev/null
+++ b/platforms/avr/drivers/analog.c
@@ -0,0 +1,138 @@
+/* Copyright 2015 Jack Humbert
+ *
+ * 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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <stdint.h>
+#include "analog.h"
+
+static uint8_t aref = ADC_REF_POWER;
+
+void analogReference(uint8_t mode) { aref = mode & (_BV(REFS1) | _BV(REFS0)); }
+
+// Arduino compatible pin input
+int16_t analogRead(uint8_t pin) {
+#if defined(__AVR_ATmega32U4__)
+ // clang-format off
+ static const uint8_t PROGMEM pin_to_mux[] = {
+ //A0 A1 A2 A3 A4 A5
+ //F7 F6 F5 F4 F1 F0
+ 0x07, 0x06, 0x05, 0x04, 0x01, 0x00,
+ //A6 A7 A8 A9 A10 A11
+ //D4 D7 B4 B5 B6 D6
+ 0x20, 0x22, 0x23, 0x24, 0x25, 0x21
+ };
+ // clang-format on
+ if (pin >= 12) return 0;
+ return adc_read(pgm_read_byte(pin_to_mux + pin));
+#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
+ if (pin >= 8) return 0;
+ return adc_read(pin);
+#else
+ return 0;
+#endif
+}
+
+int16_t analogReadPin(pin_t pin) { return adc_read(pinToMux(pin)); }
+
+uint8_t pinToMux(pin_t pin) {
+ switch (pin) {
+ // clang-format off
+#if defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
+ case F0: return 0; // ADC0
+ case F1: return _BV(MUX0); // ADC1
+ case F2: return _BV(MUX1); // ADC2
+ case F3: return _BV(MUX1) | _BV(MUX0); // ADC3
+ case F4: return _BV(MUX2); // ADC4
+ case F5: return _BV(MUX2) | _BV(MUX0); // ADC5
+ case F6: return _BV(MUX2) | _BV(MUX1); // ADC6
+ case F7: return _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // ADC7
+ default: return _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
+#elif defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
+ case F0: return 0; // ADC0
+ case F1: return _BV(MUX0); // ADC1
+ case F4: return _BV(MUX2); // ADC4
+ case F5: return _BV(MUX2) | _BV(MUX0); // ADC5
+ case F6: return _BV(MUX2) | _BV(MUX1); // ADC6
+ case F7: return _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // ADC7
+ case D4: return _BV(MUX5); // ADC8
+ case D6: return _BV(MUX5) | _BV(MUX0); // ADC9
+ case D7: return _BV(MUX5) | _BV(MUX1); // ADC10
+ case B4: return _BV(MUX5) | _BV(MUX1) | _BV(MUX0); // ADC11
+ case B5: return _BV(MUX5) | _BV(MUX2); // ADC12
+ case B6: return _BV(MUX5) | _BV(MUX2) | _BV(MUX0); // ADC13
+ default: return _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
+#elif defined(__AVR_ATmega32A__)
+ case A0: return 0; // ADC0
+ case A1: return _BV(MUX0); // ADC1
+ case A2: return _BV(MUX1); // ADC2
+ case A3: return _BV(MUX1) | _BV(MUX0); // ADC3
+ case A4: return _BV(MUX2); // ADC4
+ case A5: return _BV(MUX2) | _BV(MUX0); // ADC5
+ case A6: return _BV(MUX2) | _BV(MUX1); // ADC6
+ case A7: return _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // ADC7
+ default: return _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
+#elif defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
+ case C0: return 0; // ADC0
+ case C1: return _BV(MUX0); // ADC1
+ case C2: return _BV(MUX1); // ADC2
+ case C3: return _BV(MUX1) | _BV(MUX0); // ADC3
+ case C4: return _BV(MUX2); // ADC4
+ case C5: return _BV(MUX2) | _BV(MUX0); // ADC5
+ // ADC7:6 not present in DIP package and not shared by GPIO pins
+ default: return _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
+#endif
+ // clang-format on
+ }
+ return 0;
+}
+
+int16_t adc_read(uint8_t mux) {
+ uint16_t low;
+
+ // Enable ADC and configure prescaler
+ ADCSRA = _BV(ADEN) | ADC_PRESCALER;
+
+#if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
+ // High speed mode and ADC8-13
+ ADCSRB = _BV(ADHSM) | (mux & _BV(MUX5));
+#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
+ // High speed mode only
+ ADCSRB = _BV(ADHSM);
+#endif
+
+ // Configure mux input
+#if defined(MUX4)
+ ADMUX = aref | (mux & (_BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0)));
+#else
+ ADMUX = aref | (mux & (_BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0)));
+#endif
+
+ // Start the conversion
+ ADCSRA |= _BV(ADSC);
+ // Wait for result
+ while (ADCSRA & _BV(ADSC))
+ ;
+ // Must read LSB first
+ low = ADCL;
+ // Must read MSB only once!
+ low |= (ADCH << 8);
+
+ // turn off the ADC
+ ADCSRA &= ~(1 << ADEN);
+
+ return low;
+}
diff --git a/platforms/avr/drivers/analog.h b/platforms/avr/drivers/analog.h
new file mode 100644
index 0000000000..058882450d
--- /dev/null
+++ b/platforms/avr/drivers/analog.h
@@ -0,0 +1,53 @@
+/* Copyright 2015 Jack Humbert
+ *
+ * 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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "quantum.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void analogReference(uint8_t mode);
+int16_t analogRead(uint8_t pin);
+
+int16_t analogReadPin(pin_t pin);
+uint8_t pinToMux(pin_t pin);
+
+int16_t adc_read(uint8_t mux);
+#ifdef __cplusplus
+}
+#endif
+
+#define ADC_REF_EXTERNAL 0 // AREF, Internal Vref turned off
+#define ADC_REF_POWER _BV(REFS0) // AVCC with external capacitor on AREF pin
+#define ADC_REF_INTERNAL (_BV(REFS1) | _BV(REFS0)) // Internal 2.56V Voltage Reference with external capacitor on AREF pin (1.1V for 328P)
+
+// These prescaler values are for high speed mode, ADHSM = 1
+#if F_CPU == 16000000L || F_CPU == 12000000L
+# define ADC_PRESCALER (_BV(ADPS2) | _BV(ADPS1)) // /64
+#elif F_CPU == 8000000L
+# define ADC_PRESCALER (_BV(ADPS2) | _BV(ADPS0)) // /32
+#elif F_CPU == 4000000L
+# define ADC_PRESCALER (_BV(ADPS2)) // /16
+#elif F_CPU == 2000000L
+# define ADC_PRESCALER (_BV(ADPS1) | _BV(ADPS0)) // /8
+#elif F_CPU == 1000000L
+# define ADC_PRESCALER _BV(ADPS1) // /4
+#else
+# define ADC_PRESCALER _BV(ADPS0) // /2
+#endif
diff --git a/platforms/avr/drivers/glcdfont.c b/platforms/avr/drivers/glcdfont.c
new file mode 100644
index 0000000000..5e763b054f
--- /dev/null
+++ b/platforms/avr/drivers/glcdfont.c
@@ -0,0 +1,23 @@
+// This is the 'classic' fixed-space bitmap font for Adafruit_GFX since 1.0.
+// See gfxfont.h for newer custom bitmap font info.
+
+#include "progmem.h"
+
+// Standard ASCII 5x7 font
+
+static const unsigned char font[] PROGMEM = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x5B, 0x4F, 0x5B, 0x3E, 0x3E, 0x6B, 0x4F, 0x6B, 0x3E, 0x1C, 0x3E, 0x7C, 0x3E, 0x1C, 0x18, 0x3C, 0x7E, 0x3C, 0x18, 0x1C, 0x57, 0x7D, 0x57, 0x1C, 0x1C, 0x5E, 0x7F, 0x5E, 0x1C, 0x00, 0x18, 0x3C, 0x18, 0x00, 0xFF, 0xE7, 0xC3, 0xE7, 0xFF, 0x00, 0x18, 0x24, 0x18, 0x00, 0xFF, 0xE7, 0xDB, 0xE7, 0xFF, 0x30, 0x48, 0x3A, 0x06, 0x0E, 0x26, 0x29, 0x79, 0x29, 0x26, 0x40, 0x7F, 0x05, 0x05, 0x07, 0x40, 0x7F, 0x05, 0x25, 0x3F, 0x5A, 0x3C, 0xE7, 0x3C, 0x5A, 0x7F, 0x3E, 0x1C, 0x1C, 0x08, 0x08, 0x1C, 0x1C, 0x3E, 0x7F, 0x14, 0x22, 0x7F, 0x22, 0x14, 0x5F, 0x5F, 0x00, 0x5F, 0x5F, 0x06, 0x09, 0x7F, 0x01, 0x7F, 0x00, 0x66, 0x89, 0x95, 0x6A, 0x60, 0x60, 0x60, 0x60, 0x60, 0x94, 0xA2, 0xFF, 0xA2, 0x94, 0x08, 0x04, 0x7E, 0x04, 0x08, 0x10, 0x20, 0x7E, 0x20, 0x10, 0x08, 0x08, 0x2A, 0x1C, 0x08, 0x08, 0x1C, 0x2A, 0x08, 0x08, 0x1E, 0x10, 0x10, 0x10, 0x10, 0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
+ 0x30, 0x38, 0x3E, 0x38, 0x30, 0x06, 0x0E, 0x3E, 0x0E, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x07, 0x00, 0x07, 0x00, 0x14, 0x7F, 0x14, 0x7F, 0x14, 0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x23, 0x13, 0x08, 0x64, 0x62, 0x36, 0x49, 0x56, 0x20, 0x50, 0x00, 0x08, 0x07, 0x03, 0x00, 0x00, 0x1C, 0x22, 0x41, 0x00, 0x00, 0x41, 0x22, 0x1C, 0x00, 0x2A, 0x1C, 0x7F, 0x1C, 0x2A, 0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x80, 0x70, 0x30, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x60, 0x60, 0x00, 0x20, 0x10, 0x08, 0x04, 0x02, 0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00, 0x42, 0x7F, 0x40, 0x00, 0x72, 0x49, 0x49, 0x49, 0x46, 0x21, 0x41, 0x49, 0x4D, 0x33, 0x18, 0x14, 0x12, 0x7F, 0x10, 0x27, 0x45, 0x45, 0x45, 0x39, 0x3C, 0x4A, 0x49, 0x49, 0x31, 0x41, 0x21, 0x11, 0x09, 0x07, 0x36, 0x49, 0x49, 0x49, 0x36, 0x46, 0x49, 0x49, 0x29, 0x1E, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x40, 0x34, 0x00, 0x00,
+ 0x00, 0x08, 0x14, 0x22, 0x41, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x41, 0x22, 0x14, 0x08, 0x02, 0x01, 0x59, 0x09, 0x06, 0x3E, 0x41, 0x5D, 0x59, 0x4E, 0x7C, 0x12, 0x11, 0x12, 0x7C, 0x7F, 0x49, 0x49, 0x49, 0x36, 0x3E, 0x41, 0x41, 0x41, 0x22, 0x7F, 0x41, 0x41, 0x41, 0x3E, 0x7F, 0x49, 0x49, 0x49, 0x41, 0x7F, 0x09, 0x09, 0x09, 0x01, 0x3E, 0x41, 0x41, 0x51, 0x73, 0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00, 0x41, 0x7F, 0x41, 0x00, 0x20, 0x40, 0x41, 0x3F, 0x01, 0x7F, 0x08, 0x14, 0x22, 0x41, 0x7F, 0x40, 0x40, 0x40, 0x40, 0x7F, 0x02, 0x1C, 0x02, 0x7F, 0x7F, 0x04, 0x08, 0x10, 0x7F, 0x3E, 0x41, 0x41, 0x41, 0x3E, 0x7F, 0x09, 0x09, 0x09, 0x06, 0x3E, 0x41, 0x51, 0x21, 0x5E, 0x7F, 0x09, 0x19, 0x29, 0x46, 0x26, 0x49, 0x49, 0x49, 0x32, 0x03, 0x01, 0x7F, 0x01, 0x03, 0x3F, 0x40, 0x40, 0x40, 0x3F, 0x1F, 0x20, 0x40, 0x20, 0x1F, 0x3F, 0x40, 0x38, 0x40, 0x3F, 0x63, 0x14, 0x08, 0x14, 0x63, 0x03, 0x04, 0x78, 0x04, 0x03,
+ 0x61, 0x59, 0x49, 0x4D, 0x43, 0x00, 0x7F, 0x41, 0x41, 0x41, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x41, 0x41, 0x41, 0x7F, 0x04, 0x02, 0x01, 0x02, 0x04, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x03, 0x07, 0x08, 0x00, 0x20, 0x54, 0x54, 0x78, 0x40, 0x7F, 0x28, 0x44, 0x44, 0x38, 0x38, 0x44, 0x44, 0x44, 0x28, 0x38, 0x44, 0x44, 0x28, 0x7F, 0x38, 0x54, 0x54, 0x54, 0x18, 0x00, 0x08, 0x7E, 0x09, 0x02, 0x18, 0xA4, 0xA4, 0x9C, 0x78, 0x7F, 0x08, 0x04, 0x04, 0x78, 0x00, 0x44, 0x7D, 0x40, 0x00, 0x20, 0x40, 0x40, 0x3D, 0x00, 0x7F, 0x10, 0x28, 0x44, 0x00, 0x00, 0x41, 0x7F, 0x40, 0x00, 0x7C, 0x04, 0x78, 0x04, 0x78, 0x7C, 0x08, 0x04, 0x04, 0x78, 0x38, 0x44, 0x44, 0x44, 0x38, 0xFC, 0x18, 0x24, 0x24, 0x18, 0x18, 0x24, 0x24, 0x18, 0xFC, 0x7C, 0x08, 0x04, 0x04, 0x08, 0x48, 0x54, 0x54, 0x54, 0x24, 0x04, 0x04, 0x3F, 0x44, 0x24, 0x3C, 0x40, 0x40, 0x20, 0x7C, 0x1C, 0x20, 0x40, 0x20, 0x1C, 0x3C, 0x40, 0x30, 0x40, 0x3C,
+ 0x44, 0x28, 0x10, 0x28, 0x44, 0x4C, 0x90, 0x90, 0x90, 0x7C, 0x44, 0x64, 0x54, 0x4C, 0x44, 0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0x41, 0x36, 0x08, 0x00, 0x02, 0x01, 0x02, 0x04, 0x02, 0x3C, 0x26, 0x23, 0x26, 0x3C, 0x1E, 0xA1, 0xA1, 0x61, 0x12, 0x3A, 0x40, 0x40, 0x20, 0x7A, 0x38, 0x54, 0x54, 0x55, 0x59, 0x21, 0x55, 0x55, 0x79, 0x41, 0x22, 0x54, 0x54, 0x78, 0x42, // a-umlaut
+ 0x21, 0x55, 0x54, 0x78, 0x40, 0x20, 0x54, 0x55, 0x79, 0x40, 0x0C, 0x1E, 0x52, 0x72, 0x12, 0x39, 0x55, 0x55, 0x55, 0x59, 0x39, 0x54, 0x54, 0x54, 0x59, 0x39, 0x55, 0x54, 0x54, 0x58, 0x00, 0x00, 0x45, 0x7C, 0x41, 0x00, 0x02, 0x45, 0x7D, 0x42, 0x00, 0x01, 0x45, 0x7C, 0x40, 0x7D, 0x12, 0x11, 0x12, 0x7D, // A-umlaut
+ 0xF0, 0x28, 0x25, 0x28, 0xF0, 0x7C, 0x54, 0x55, 0x45, 0x00, 0x20, 0x54, 0x54, 0x7C, 0x54, 0x7C, 0x0A, 0x09, 0x7F, 0x49, 0x32, 0x49, 0x49, 0x49, 0x32, 0x3A, 0x44, 0x44, 0x44, 0x3A, // o-umlaut
+ 0x32, 0x4A, 0x48, 0x48, 0x30, 0x3A, 0x41, 0x41, 0x21, 0x7A, 0x3A, 0x42, 0x40, 0x20, 0x78, 0x00, 0x9D, 0xA0, 0xA0, 0x7D, 0x3D, 0x42, 0x42, 0x42, 0x3D, // O-umlaut
+ 0x3D, 0x40, 0x40, 0x40, 0x3D, 0x3C, 0x24, 0xFF, 0x24, 0x24, 0x48, 0x7E, 0x49, 0x43, 0x66, 0x2B, 0x2F, 0xFC, 0x2F, 0x2B, 0xFF, 0x09, 0x29, 0xF6, 0x20, 0xC0, 0x88, 0x7E, 0x09, 0x03, 0x20, 0x54, 0x54, 0x79, 0x41, 0x00, 0x00, 0x44, 0x7D, 0x41, 0x30, 0x48, 0x48, 0x4A, 0x32, 0x38, 0x40, 0x40, 0x22, 0x7A, 0x00, 0x7A, 0x0A, 0x0A, 0x72, 0x7D, 0x0D, 0x19, 0x31, 0x7D, 0x26, 0x29, 0x29, 0x2F, 0x28, 0x26, 0x29, 0x29, 0x29, 0x26, 0x30, 0x48, 0x4D, 0x40, 0x20, 0x38, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x38, 0x2F, 0x10, 0xC8, 0xAC, 0xBA, 0x2F, 0x10, 0x28, 0x34, 0xFA, 0x00, 0x00, 0x7B, 0x00, 0x00, 0x08, 0x14, 0x2A, 0x14, 0x22, 0x22, 0x14, 0x2A, 0x14, 0x08, 0x55, 0x00, 0x55, 0x00, 0x55, // #176 (25% block) missing in old code
+ 0xAA, 0x55, 0xAA, 0x55, 0xAA, // 50% block
+ 0xFF, 0x55, 0xFF, 0x55, 0xFF, // 75% block
+ 0x00, 0x00, 0x00, 0xFF, 0x00, 0x10, 0x10, 0x10, 0xFF, 0x00, 0x14, 0x14, 0x14, 0xFF, 0x00, 0x10, 0x10, 0xFF, 0x00, 0xFF, 0x10, 0x10, 0xF0, 0x10, 0xF0, 0x14, 0x14, 0x14, 0xFC, 0x00, 0x14, 0x14, 0xF7, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x14, 0x14, 0xF4, 0x04, 0xFC, 0x14, 0x14, 0x17, 0x10, 0x1F, 0x10, 0x10, 0x1F, 0x10, 0x1F, 0x14, 0x14, 0x14, 0x1F, 0x00, 0x10, 0x10, 0x10, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x10, 0x10, 0x10, 0x10, 0x1F, 0x10, 0x10, 0x10, 0x10, 0xF0, 0x10, 0x00, 0x00, 0x00, 0xFF, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0xFF, 0x10, 0x00, 0x00, 0x00, 0xFF, 0x14, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x1F, 0x10, 0x17, 0x00, 0x00, 0xFC, 0x04, 0xF4, 0x14, 0x14, 0x17, 0x10, 0x17, 0x14, 0x14, 0xF4, 0x04, 0xF4, 0x00, 0x00, 0xFF, 0x00, 0xF7, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0xF7, 0x00, 0xF7, 0x14, 0x14, 0x14, 0x17, 0x14, 0x10, 0x10, 0x1F, 0x10, 0x1F,
+ 0x14, 0x14, 0x14, 0xF4, 0x14, 0x10, 0x10, 0xF0, 0x10, 0xF0, 0x00, 0x00, 0x1F, 0x10, 0x1F, 0x00, 0x00, 0x00, 0x1F, 0x14, 0x00, 0x00, 0x00, 0xFC, 0x14, 0x00, 0x00, 0xF0, 0x10, 0xF0, 0x10, 0x10, 0xFF, 0x10, 0xFF, 0x14, 0x14, 0x14, 0xFF, 0x14, 0x10, 0x10, 0x10, 0x1F, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x38, 0x44, 0x44, 0x38, 0x44, 0xFC, 0x4A, 0x4A, 0x4A, 0x34, // sharp-s or beta
+ 0x7E, 0x02, 0x02, 0x06, 0x06, 0x02, 0x7E, 0x02, 0x7E, 0x02, 0x63, 0x55, 0x49, 0x41, 0x63, 0x38, 0x44, 0x44, 0x3C, 0x04, 0x40, 0x7E, 0x20, 0x1E, 0x20, 0x06, 0x02, 0x7E, 0x02, 0x02, 0x99, 0xA5, 0xE7, 0xA5, 0x99, 0x1C, 0x2A, 0x49, 0x2A, 0x1C, 0x4C, 0x72, 0x01, 0x72, 0x4C, 0x30, 0x4A, 0x4D, 0x4D, 0x30, 0x30, 0x48, 0x78, 0x48, 0x30, 0xBC, 0x62, 0x5A, 0x46, 0x3D, 0x3E, 0x49, 0x49, 0x49, 0x00, 0x7E, 0x01, 0x01, 0x01, 0x7E, 0x2A, 0x2A, 0x2A, 0x2A, 0x2A, 0x44, 0x44, 0x5F, 0x44, 0x44, 0x40, 0x51, 0x4A, 0x44, 0x40, 0x40, 0x44, 0x4A, 0x51, 0x40, 0x00, 0x00, 0xFF, 0x01, 0x03, 0xE0, 0x80, 0xFF, 0x00, 0x00, 0x08, 0x08, 0x6B, 0x6B, 0x08, 0x36, 0x12, 0x36, 0x24, 0x36, 0x06, 0x0F, 0x09, 0x0F, 0x06, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x30, 0x40, 0xFF, 0x01, 0x01, 0x00, 0x1F, 0x01, 0x01, 0x1E, 0x00, 0x19, 0x1D, 0x17, 0x12, 0x00, 0x3C, 0x3C, 0x3C, 0x3C, 0x00, 0x00, 0x00, 0x00, 0x00 // #255 NBSP
+};
diff --git a/platforms/avr/drivers/hd44780.c b/platforms/avr/drivers/hd44780.c
new file mode 100644
index 0000000000..f71069dece
--- /dev/null
+++ b/platforms/avr/drivers/hd44780.c
@@ -0,0 +1,536 @@
+/****************************************************************************
+ Title: HD44780U LCD library
+ Author: Peter Fleury <pfleury@gmx.ch> http://tinyurl.com/peterfleury
+ License: GNU General Public License Version 3
+ File: $Id: lcd.c,v 1.15.2.2 2015/01/17 12:16:05 peter Exp $
+ Software: AVR-GCC 3.3
+ Target: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
+
+ DESCRIPTION
+ Basic routines for interfacing a HD44780U-based text lcd display
+
+ Originally based on Volker Oth's lcd library,
+ changed lcd_init(), added additional constants for lcd_command(),
+ added 4-bit I/O mode, improved and optimized code.
+
+ Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
+ 4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
+
+ Memory mapped mode compatible with Kanda STK200, but supports also
+ generation of R/W signal through A8 address line.
+
+ USAGE
+ See the C include lcd.h file for a description of each function
+
+*****************************************************************************/
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <util/delay.h>
+#include "hd44780.h"
+
+/*
+** constants/macros
+*/
+#define DDR(x) (*(&x - 1)) /* address of data direction register of port x */
+#if defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
+/* on ATmega64/128 PINF is on port 0x00 and not 0x60 */
+# define PIN(x) (&PORTF == &(x) ? _SFR_IO8(0x00) : (*(&x - 2)))
+#else
+# define PIN(x) (*(&x - 2)) /* address of input register of port x */
+#endif
+
+#if LCD_IO_MODE
+# define lcd_e_delay() _delay_us(LCD_DELAY_ENABLE_PULSE)
+# define lcd_e_high() LCD_E_PORT |= _BV(LCD_E_PIN);
+# define lcd_e_low() LCD_E_PORT &= ~_BV(LCD_E_PIN);
+# define lcd_e_toggle() toggle_e()
+# define lcd_rw_high() LCD_RW_PORT |= _BV(LCD_RW_PIN)
+# define lcd_rw_low() LCD_RW_PORT &= ~_BV(LCD_RW_PIN)
+# define lcd_rs_high() LCD_RS_PORT |= _BV(LCD_RS_PIN)
+# define lcd_rs_low() LCD_RS_PORT &= ~_BV(LCD_RS_PIN)
+#endif
+
+#if LCD_IO_MODE
+# if LCD_LINES == 1
+# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
+# else
+# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
+# endif
+#else
+# if LCD_LINES == 1
+# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_1LINE
+# else
+# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_2LINES
+# endif
+#endif
+
+#if LCD_CONTROLLER_KS0073
+# if LCD_LINES == 4
+
+# define KS0073_EXTENDED_FUNCTION_REGISTER_ON 0x2C /* |0|010|1100 4-bit mode, extension-bit RE = 1 */
+# define KS0073_EXTENDED_FUNCTION_REGISTER_OFF 0x28 /* |0|010|1000 4-bit mode, extension-bit RE = 0 */
+# define KS0073_4LINES_MODE 0x09 /* |0|000|1001 4 lines mode */
+
+# endif
+#endif
+
+/*
+** function prototypes
+*/
+#if LCD_IO_MODE
+static void toggle_e(void);
+#endif
+
+/*
+** local functions
+*/
+
+/*************************************************************************
+delay for a minimum of <us> microseconds
+the number of loops is calculated at compile-time from MCU clock frequency
+*************************************************************************/
+#define delay(us) _delay_us(us)
+
+#if LCD_IO_MODE
+/* toggle Enable Pin to initiate write */
+static void toggle_e(void) {
+ lcd_e_high();
+ lcd_e_delay();
+ lcd_e_low();
+}
+#endif
+
+/*************************************************************************
+Low-level function to write byte to LCD controller
+Input: data byte to write to LCD
+ rs 1: write data
+ 0: write instruction
+Returns: none
+*************************************************************************/
+#if LCD_IO_MODE
+static void lcd_write(uint8_t data, uint8_t rs) {
+ unsigned char dataBits;
+
+ if (rs) { /* write data (RS=1, RW=0) */
+ lcd_rs_high();
+ } else { /* write instruction (RS=0, RW=0) */
+ lcd_rs_low();
+ }
+ lcd_rw_low(); /* RW=0 write mode */
+
+ if ((&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT) && (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)) {
+ /* configure data pins as output */
+ DDR(LCD_DATA0_PORT) |= 0x0F;
+
+ /* output high nibble first */
+ dataBits = LCD_DATA0_PORT & 0xF0;
+ LCD_DATA0_PORT = dataBits | ((data >> 4) & 0x0F);
+ lcd_e_toggle();
+
+ /* output low nibble */
+ LCD_DATA0_PORT = dataBits | (data & 0x0F);
+ lcd_e_toggle();
+
+ /* all data pins high (inactive) */
+ LCD_DATA0_PORT = dataBits | 0x0F;
+ } else {
+ /* configure data pins as output */
+ DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
+ DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
+ DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
+ DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
+
+ /* output high nibble first */
+ LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
+ LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
+ LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
+ LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
+ if (data & 0x80) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
+ if (data & 0x40) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
+ if (data & 0x20) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
+ if (data & 0x10) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
+ lcd_e_toggle();
+
+ /* output low nibble */
+ LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
+ LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
+ LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
+ LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
+ if (data & 0x08) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
+ if (data & 0x04) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
+ if (data & 0x02) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
+ if (data & 0x01) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
+ lcd_e_toggle();
+
+ /* all data pins high (inactive) */
+ LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
+ LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
+ LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
+ LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
+ }
+}
+#else
+# define lcd_write(d, rs) \
+ if (rs) \
+ *(volatile uint8_t *)(LCD_IO_DATA) = d; \
+ else \
+ *(volatile uint8_t *)(LCD_IO_FUNCTION) = d;
+/* rs==0 -> write instruction to LCD_IO_FUNCTION */
+/* rs==1 -> write data to LCD_IO_DATA */
+#endif
+
+/*************************************************************************
+Low-level function to read byte from LCD controller
+Input: rs 1: read data
+ 0: read busy flag / address counter
+Returns: byte read from LCD controller
+*************************************************************************/
+#if LCD_IO_MODE
+static uint8_t lcd_read(uint8_t rs) {
+ uint8_t data;
+
+ if (rs)
+ lcd_rs_high(); /* RS=1: read data */
+ else
+ lcd_rs_low(); /* RS=0: read busy flag */
+ lcd_rw_high(); /* RW=1 read mode */
+
+ if ((&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT) && (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)) {
+ DDR(LCD_DATA0_PORT) &= 0xF0; /* configure data pins as input */
+
+ lcd_e_high();
+ lcd_e_delay();
+ data = PIN(LCD_DATA0_PORT) << 4; /* read high nibble first */
+ lcd_e_low();
+
+ lcd_e_delay(); /* Enable 500ns low */
+
+ lcd_e_high();
+ lcd_e_delay();
+ data |= PIN(LCD_DATA0_PORT) & 0x0F; /* read low nibble */
+ lcd_e_low();
+ } else {
+ /* configure data pins as input */
+ DDR(LCD_DATA0_PORT) &= ~_BV(LCD_DATA0_PIN);
+ DDR(LCD_DATA1_PORT) &= ~_BV(LCD_DATA1_PIN);
+ DDR(LCD_DATA2_PORT) &= ~_BV(LCD_DATA2_PIN);
+ DDR(LCD_DATA3_PORT) &= ~_BV(LCD_DATA3_PIN);
+
+ /* read high nibble first */
+ lcd_e_high();
+ lcd_e_delay();
+ data = 0;
+ if (PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN)) data |= 0x10;
+ if (PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN)) data |= 0x20;
+ if (PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN)) data |= 0x40;
+ if (PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN)) data |= 0x80;
+ lcd_e_low();
+
+ lcd_e_delay(); /* Enable 500ns low */
+
+ /* read low nibble */
+ lcd_e_high();
+ lcd_e_delay();
+ if (PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN)) data |= 0x01;
+ if (PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN)) data |= 0x02;
+ if (PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN)) data |= 0x04;
+ if (PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN)) data |= 0x08;
+ lcd_e_low();
+ }
+ return data;
+}
+#else
+# define lcd_read(rs) (rs) ? *(volatile uint8_t *)(LCD_IO_DATA + LCD_IO_READ) : *(volatile uint8_t *)(LCD_IO_FUNCTION + LCD_IO_READ)
+/* rs==0 -> read instruction from LCD_IO_FUNCTION */
+/* rs==1 -> read data from LCD_IO_DATA */
+#endif
+
+/*************************************************************************
+loops while lcd is busy, returns address counter
+*************************************************************************/
+static uint8_t lcd_waitbusy(void)
+
+{
+ register uint8_t c;
+
+ /* wait until busy flag is cleared */
+ while ((c = lcd_read(0)) & (1 << LCD_BUSY)) {
+ }
+
+ /* the address counter is updated 4us after the busy flag is cleared */
+ delay(LCD_DELAY_BUSY_FLAG);
+
+ /* now read the address counter */
+ return (lcd_read(0)); // return address counter
+
+} /* lcd_waitbusy */
+
+/*************************************************************************
+Move cursor to the start of next line or to the first line if the cursor
+is already on the last line.
+*************************************************************************/
+static inline void lcd_newline(uint8_t pos) {
+ register uint8_t addressCounter;
+
+#if LCD_LINES == 1
+ addressCounter = 0;
+#endif
+#if LCD_LINES == 2
+ if (pos < (LCD_START_LINE2))
+ addressCounter = LCD_START_LINE2;
+ else
+ addressCounter = LCD_START_LINE1;
+#endif
+#if LCD_LINES == 4
+# if KS0073_4LINES_MODE
+ if (pos < LCD_START_LINE2)
+ addressCounter = LCD_START_LINE2;
+ else if ((pos >= LCD_START_LINE2) && (pos < LCD_START_LINE3))
+ addressCounter = LCD_START_LINE3;
+ else if ((pos >= LCD_START_LINE3) && (pos < LCD_START_LINE4))
+ addressCounter = LCD_START_LINE4;
+ else
+ addressCounter = LCD_START_LINE1;
+# else
+ if (pos < LCD_START_LINE3)
+ addressCounter = LCD_START_LINE2;
+ else if ((pos >= LCD_START_LINE2) && (pos < LCD_START_LINE4))
+ addressCounter = LCD_START_LINE3;
+ else if ((pos >= LCD_START_LINE3) && (pos < LCD_START_LINE2))
+ addressCounter = LCD_START_LINE4;
+ else
+ addressCounter = LCD_START_LINE1;
+# endif
+#endif
+ lcd_command((1 << LCD_DDRAM) + addressCounter);
+
+} /* lcd_newline */
+
+/*
+** PUBLIC FUNCTIONS
+*/
+
+/*************************************************************************
+Send LCD controller instruction command
+Input: instruction to send to LCD controller, see HD44780 data sheet
+Returns: none
+*************************************************************************/
+void lcd_command(uint8_t cmd) {
+ lcd_waitbusy();
+ lcd_write(cmd, 0);
+}
+
+/*************************************************************************
+Send data byte to LCD controller
+Input: data to send to LCD controller, see HD44780 data sheet
+Returns: none
+*************************************************************************/
+void lcd_data(uint8_t data) {
+ lcd_waitbusy();
+ lcd_write(data, 1);
+}
+
+/*************************************************************************
+Set cursor to specified position
+Input: x horizontal position (0: left most position)
+ y vertical position (0: first line)
+Returns: none
+*************************************************************************/
+void lcd_gotoxy(uint8_t x, uint8_t y) {
+#if LCD_LINES == 1
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
+#endif
+#if LCD_LINES == 2
+ if (y == 0)
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
+ else
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
+#endif
+#if LCD_LINES == 4
+ if (y == 0)
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
+ else if (y == 1)
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
+ else if (y == 2)
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE3 + x);
+ else /* y==3 */
+ lcd_command((1 << LCD_DDRAM) + LCD_START_LINE4 + x);
+#endif
+
+} /* lcd_gotoxy */
+
+/*************************************************************************
+*************************************************************************/
+int lcd_getxy(void) { return lcd_waitbusy(); }
+
+/*************************************************************************
+Clear display and set cursor to home position
+*************************************************************************/
+void lcd_clrscr(void) { lcd_command(1 << LCD_CLR); }
+
+/*************************************************************************
+Set cursor to home position
+*************************************************************************/
+void lcd_home(void) { lcd_command(1 << LCD_HOME); }
+
+/*************************************************************************
+Display character at current cursor position
+Input: character to be displayed
+Returns: none
+*************************************************************************/
+void lcd_putc(char c) {
+ uint8_t pos;
+
+ pos = lcd_waitbusy(); // read busy-flag and address counter
+ if (c == '\n') {
+ lcd_newline(pos);
+ } else {
+#if LCD_WRAP_LINES == 1
+# if LCD_LINES == 1
+ if (pos == LCD_START_LINE1 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1, 0);
+ }
+# elif LCD_LINES == 2
+ if (pos == LCD_START_LINE1 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2, 0);
+ } else if (pos == LCD_START_LINE2 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1, 0);
+ }
+# elif LCD_LINES == 4
+ if (pos == LCD_START_LINE1 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2, 0);
+ } else if (pos == LCD_START_LINE2 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE3, 0);
+ } else if (pos == LCD_START_LINE3 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE4, 0);
+ } else if (pos == LCD_START_LINE4 + LCD_DISP_LENGTH) {
+ lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1, 0);
+ }
+# endif
+ lcd_waitbusy();
+#endif
+ lcd_write(c, 1);
+ }
+
+} /* lcd_putc */
+
+/*************************************************************************
+Display string without auto linefeed
+Input: string to be displayed
+Returns: none
+*************************************************************************/
+void lcd_puts(const char *s)
+/* print string on lcd (no auto linefeed) */
+{
+ register char c;
+
+ while ((c = *s++)) {
+ lcd_putc(c);
+ }
+
+} /* lcd_puts */
+
+/*************************************************************************