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prepared bootloader for use with Sun Type 5 keyboard

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This commit is contained in:
Ronald Schaten 2008-10-25 19:29:11 +00:00
parent 3090fe61be
commit ecafd0c256
2 changed files with 98 additions and 2 deletions
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4
bootloader/Makefile
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@ -22,7 +22,9 @@ AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
CC = avr-gcc
# Options:
DEFINES = #-DDEBUG_LEVEL=2
DEFINES = -DMODELIBMMODELM
#DEFINES = -DMODELSUNTYPE5
CFLAGS = -Wall -Os -I. -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) $(DEFINES)
LDFLAGS = -Wl,--section-start=.text=$(BOOTLOADER_ADDRESS)

96
bootloader/bootloaderconfig.h
View File

@ -115,6 +115,15 @@
#ifndef __ASSEMBLER__ /* assembler cannot parse function definitions */
#ifdef MODELSUNTYPE5
# define SRCLOCKON PORTC |= (1 << PC5)
# define SRCLOCKOFF PORTC &= ~(1 << PC5)
# define SRDATAON PORTC |= (1 << PC6)
# define SRDATAOFF PORTC &= ~(1 << PC6)
# define SRSTROBEON PORTC |= (1 << PC7)
# define SRSTROBEOFF PORTC &= ~(1 << PC7)
# define KEYROW 6
#endif
uint8_t ledcounter = 0; ///< counter used to set the speed of the running light
uint8_t ledstate = 0; ///< state of the running light
@ -122,25 +131,67 @@ uint8_t ledstate = 0; ///< state of the running light
* Prepare IO-ports for detection of bootloader-condition, which happens in
* bootLoaderCondition().
*/
#ifdef MODELIBMMODELM
static inline void bootLoaderInit(void) {
// switch on leds
DDRD |= (1 << PIND4) | (1 << PIND5) | (1 << PIND6);
PORTD &= ~((1 << PIND4) | (1 << PIND5) | (1 << PIND6));
// choose matrix position for hotkey. we use KEY_KPminus, so we set row 13
// and later look for pin 7
// and later look for column 7
DDRA = 0x00;
PORTA = 0xff;
DDRC = (1 << DDC2);
PORTC = ~(1 << PINC2);
}
#endif
#ifdef MODELSUNTYPE5
static inline void bootLoaderInit(void) {
// configure ports
DDRA = 0x00;
PORTA = 0xff;
DDRB = (1 << PB4) |(1 << PB5) | (1 << PB6) | (1 << PB7);
PORTB = (1 << PB0) | (1 << PB1) | (1 << PB2) | (1 << PB3);
DDRC = (1 << PC5) | (1 << PC6) | (1 << PC7);
PORTC = (1 << PC0) | (1 << PC1) | (1 << PC2) | (1 << PC3) | (1 << PC4);
DDRD &= ~((1 << PD4) | (1 << PD5) | (1 << PD6) | (1 << PD7));
PORTD |= (1 << PD4) | (1 << PD5) | (1 << PD6) | (1 << PD7);
// switch on leds
PORTB &= ~((1 << PB4) | (1 << PB5) | (1 << PB6) | (1 << PB7));
// choose matrix position for hotkey. we use KEY_KPminus, so we set all
// rows to 1 except for row 6 (KEYROW) and later look for column 6
SRDATAON;
SRSTROBEOFF;
uint8_t i = 0;
for (i = 0; i < (21 - KEYROW); i++) {
SRCLOCKON; SRCLOCKOFF;
}
SRDATAOFF;
SRCLOCKON; SRCLOCKOFF;
SRDATAON;
for (i = 0; i < KEYROW; i++) {
SRCLOCKON; SRCLOCKOFF;
}
SRSTROBEON; SRSTROBEOFF;
}
#endif
/**
* Clean up after boot loader action. In this case: switch off all LEDs.
*/
#ifdef MODELIBMMODELM
static inline void bootLoaderExit(void) {
// switch off leds
PORTD |= (1 << PIND4) | (1 << PIND5) | (1 << PIND6);
}
#endif
#ifdef MODELSUNTYPE5
static inline void bootLoaderExit(void) {
// switch off leds
PORTB |= (1 << PB4) | (1 << PB5) | (1 << PB6) | (1 << PB7);
}
#endif
/**
* Check if conditions for boot loader are met. This function is called in an
@ -148,6 +199,7 @@ static inline void bootLoaderExit(void) {
* the LEDs.
* \return 1 if bootloader should be active, 0 otherwise
*/
#ifdef MODELIBMMODELM
static inline uint8_t bootLoaderCondition() {
// look for pin 7
if (!(PINB & (1 << PINB7))) {
@ -182,6 +234,48 @@ static inline uint8_t bootLoaderCondition() {
return 0;
}
}
#endif
#ifdef MODELSUNTYPE5
static inline uint8_t bootLoaderCondition() {
// look for pin 7
if (!(PINA & (1 << PINA6))) {
// boot loader active, blink leds
_delay_ms(1);
ledcounter++;
if (ledcounter == 127) {
switch (ledstate) {
case 0:
PORTB &= ~(1 << PINB7);
PORTB |= (1 << PINB4) | (1 << PINB5) | (1 << PINB6);
ledstate = 1;
break;
case 1:
PORTB &= ~(1 << PINB6);
PORTB |= (1 << PINB4) | (1 << PINB5) | (1 << PINB7);
ledstate = 2;
break;
case 2:
PORTB &= ~(1 << PINB5);
PORTB |= (1 << PINB4) | (1 << PINB6) | (1 << PINB7);
ledstate = 3;
break;
case 3:
PORTB &= ~(1 << PINB4);
PORTB |= (1 << PINB5) | (1 << PINB6) | (1 << PINB7);
ledstate = 0;
break;
default:
ledstate = 0;
}
ledcounter = 0;
}
return 1;
} else {
// no boot loader
return 0;
}
}
#endif
#endif /* __ASSEMBLER__ */