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Added Mega support for the TFT shield

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Ladyada
2011-08-23 19:32:30 -04:00
parent 934226e5d2
commit 3bc51273a2
2 changed files with 59 additions and 9 deletions
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TFTLCD.cpp
+54 -7
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@@ -3,7 +3,7 @@
// Graphics library by ladyada/adafruit with init code from Rossum
// MIT license
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
//#ifdef USE_ADAFRUIT_SHIELD_PINOUT
// special defines for the dataport
#define DATAPORT1 PORTD
@@ -17,12 +17,8 @@
#define DATA1_MASK 0xD0
#define DATA2_MASK 0x2F
#define MEGA_DATAPORT1 PORTH
#define MEGA_DATAPORT2 PORTB
#define MEGA_DATAPORT3 PORTB
#define MEGA_DATA1_MASK
// for mega & shield usage, we just hardcoded it (its messy)
// TODO: add mega pinout
#else
// for the breakout board tutorial, two ports are used :/
#define DATAPORT1 PORTD
@@ -689,7 +685,14 @@ inline void TFTLCD::setWriteDir(void) {
DATADDR2 |= DATA2_MASK;
DATADDR1 |= DATA1_MASK;
#elif defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
DDRH |= 0x78;
DDRB |= 0xB0;
DDRG |= _BV(5);
#else
MEGA_DATADDR = 0xFF;
#endif
#else
#error "No pins defined!"
#endif
@@ -700,7 +703,14 @@ inline void TFTLCD::setReadDir(void) {
DATADDR2 &= ~DATA2_MASK;
DATADDR1 &= ~DATA1_MASK;
#elif defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
DDRH &= ~0x78;
DDRB &= ~0xB0;
DDRG &= ~_BV(5);
#else
MEGA_DATADDR = 0;
#endif
#else
#error "No pins defined!"
#endif
@@ -716,7 +726,28 @@ inline void TFTLCD::write8(uint8_t d) {
#elif defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
MEGA_DATAPORT = d;
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
// bit 6/7 (PH3 & 4)
// first two bits 0 & 1 (PH5 & 6)
PORTH &= ~(0x78);
PORTH |= ((d&0xC0) >> 3) | ((d&0x3) << 5);
// bits 2 & 3 (PB4 & PB5)
// bit 5 (PB7)
PORTB &= ~(0xB0);
PORTB |= ((d & 0x2C) << 2);
// bit 4 (PG5)
if (d & _BV(4))
PORTG |= _BV(5);
else
PORTG &= ~_BV(5);
#else
MEGA_DATAPORT = d;
#endif
#else
#error "No pins defined!"
@@ -732,7 +763,23 @@ inline uint8_t TFTLCD::read8(void) {
#elif defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
// bit 6/7 (PH3 & 4)
// first two bits 0 & 1 (PH5 & 6)
d = (PINH & 0x60) >> 5;
d |= (PINH & 0x18) << 3;
// bits 2 & 3 & 5 (PB4 & PB5, PB7)
d |= (PINB & 0xB0) >> 2;
// bit 4 (PG5)
if (PING & _BV(5))
d |= _BV(4);
#else
d = MEGA_DATAPIN;
#endif
#else