razzor/twiboot
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add LED macros, bump version

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This commit is contained in:
Olaf Rempel 2011-02-20 14:40:42 +01:00
parent d281696895
commit 9424e20ea7
1 changed files with 18 additions and 13 deletions
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31
main.c
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@ -38,15 +38,15 @@
*/ */
#if defined (__AVR_ATmega8__) #if defined (__AVR_ATmega8__)
#define VERSION_STRING "TWIBOOT m8v2.0" #define VERSION_STRING "TWIBOOT m8v2.1"
#define SIGNATURE_BYTES 0x1E, 0x93, 0x07 #define SIGNATURE_BYTES 0x1E, 0x93, 0x07
#elif defined (__AVR_ATmega88__) #elif defined (__AVR_ATmega88__)
#define VERSION_STRING "TWIBOOT m88v2.0" #define VERSION_STRING "TWIBOOT m88v2.1"
#define SIGNATURE_BYTES 0x1E, 0x93, 0x0A #define SIGNATURE_BYTES 0x1E, 0x93, 0x0A
#elif defined (__AVR_ATmega168__) #elif defined (__AVR_ATmega168__)
#define VERSION_STRING "TWIBOOT m168v2.0" #define VERSION_STRING "TWIBOOT m168v2.1"
#define SIGNATURE_BYTES 0x1E, 0x94, 0x06 #define SIGNATURE_BYTES 0x1E, 0x94, 0x06
#else #else
@ -61,10 +61,15 @@
/* 40 * 25ms */ /* 40 * 25ms */
#define TIMEOUT 40 #define TIMEOUT 40
#define LED_RT (1<<PORTB4) #define LED_INIT() DDRB = ((1<<PORTB4) | (1<<PORTB5))
#define LED_GN (1<<PORTB5) #define LED_RT_ON() PORTB |= (1<<PORTB4)
#define LED_RT_OFF() PORTB &= ~(1<<PORTB4)
#define LED_GN_ON() PORTB |= (1<<PORTB5)
#define LED_GN_OFF() PORTB &= ~(1<<PORTB5)
#define LED_GN_TOGGLE() PORTB ^= (1<<PORTB5)
#define LED_OFF() PORTB = 0x00
#define TWI_ADDRESS 0x21 #define TWI_ADDRESS 0x29
/* SLA+R */ /* SLA+R */
#define CMD_WAIT 0x00 #define CMD_WAIT 0x00
@ -214,7 +219,7 @@ ISR(TWI_vect)
/* SLA+W received, ACK returned -> receive data and ACK */ /* SLA+W received, ACK returned -> receive data and ACK */
case 0x60: case 0x60:
bcnt = 0; bcnt = 0;
PORTB |= LED_RT; LED_RT_ON();
TWCR |= (1<<TWINT) | (1<<TWEA); TWCR |= (1<<TWINT) | (1<<TWEA);
break; break;
@ -314,7 +319,7 @@ ISR(TWI_vect)
/* SLA+R received, ACK returned -> send data */ /* SLA+R received, ACK returned -> send data */
case 0xA8: case 0xA8:
bcnt = 0; bcnt = 0;
PORTB |= LED_RT; LED_RT_ON();
/* prev. SLA+R, data sent, ACK returned -> send data */ /* prev. SLA+R, data sent, ACK returned -> send data */
case 0xB8: case 0xB8:
@ -350,7 +355,7 @@ ISR(TWI_vect)
case 0xA0: case 0xA0:
/* data sent, NACK returned */ /* data sent, NACK returned */
case 0xC0: case 0xC0:
PORTB &= ~LED_RT; LED_RT_OFF();
TWCR |= (1<<TWINT) | (1<<TWEA); TWCR |= (1<<TWINT) | (1<<TWEA);
break; break;
@ -367,7 +372,7 @@ ISR(TIMER0_OVF_vect)
TCNT0 = TIMER_RELOAD; TCNT0 = TIMER_RELOAD;
/* blink LED while running */ /* blink LED while running */
PORTB ^= LED_GN; LED_GN_TOGGLE();
/* count down for app-boot */ /* count down for app-boot */
if (boot_timeout > 1) if (boot_timeout > 1)
@ -398,8 +403,8 @@ void disable_wdt_timer(void)
int main(void) __attribute__ ((noreturn)); int main(void) __attribute__ ((noreturn));
int main(void) int main(void)
{ {
DDRB = LED_GN | LED_RT; LED_INIT();
PORTB = LED_GN; LED_GN_ON();
/* move interrupt-vectors to bootloader */ /* move interrupt-vectors to bootloader */
/* timer0: running with F_CPU/1024, OVF interrupt */ /* timer0: running with F_CPU/1024, OVF interrupt */
@ -444,7 +449,7 @@ int main(void)
MCUCR = (0<<IVSEL); MCUCR = (0<<IVSEL);
#endif #endif
PORTB = 0x00; LED_OFF();
uint16_t wait = 0x0000; uint16_t wait = 0x0000;
do { do {