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Use software serial for Sun.

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This commit is contained in:
tmk 2012-10-19 14:06:18 +09:00
parent b64143d0dc
commit 6536dc9a14
3 changed files with 45 additions and 6 deletions
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2
common/mousekey.h
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@ -45,7 +45,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#define MOUSEKEY_TIME_TO_MAX 20 #define MOUSEKEY_TIME_TO_MAX 20
#endif #endif
#ifndef MOUSEKEY_WHEEL_MAX_SPEED #ifndef MOUSEKEY_WHEEL_MAX_SPEED
#define MOUSEKEY_WHEEL_MAX_SPEED 16 #define MOUSEKEY_WHEEL_MAX_SPEED 8
#endif #endif
#ifndef MOUSEKEY_WHEEL_TIME_TO_MAX #ifndef MOUSEKEY_WHEEL_TIME_TO_MAX
#define MOUSEKEY_WHEEL_TIME_TO_MAX 40 #define MOUSEKEY_WHEEL_TIME_TO_MAX 40

47
protocol/serial.c → protocol/serial_soft.c
View File

@ -38,12 +38,19 @@ POSSIBILITY OF SUCH DAMAGE.
#include <stdbool.h> #include <stdbool.h>
#include <avr/io.h> #include <avr/io.h>
#include <avr/interrupt.h> #include <avr/interrupt.h>
#include <util/delay.h>
#include "serial.h" #include "serial.h"
/*
* Stupid Inefficient Busy-wait Software Serial
* is still useful for negative logic signal like Sun protocol not supported by hardware USART.
*/
#define WAIT_US (1000000/SERIAL_BAUD)
void serial_init(void) void serial_init(void)
{ {
SERIAL_RX_INIT(); SERIAL_RXD_INIT();
} }
// RX ring buffer // RX ring buffer
@ -64,12 +71,44 @@ uint8_t serial_recv(void)
return data; return data;
} }
// USART RX complete interrupt //ISR(INT2_vect)
ISR(SERIAL_RX_VECT) ISR(SERIAL_RXD_VECT)
{ {
SERIAL_RXD_INT_ENTER()
uint8_t data = 0;
#ifdef SERIAL_BIT_ORDER_MSB
uint8_t pos = 0x80;
#else
uint8_t pos = 0x01;
#endif
// to center of start bit
_delay_us(WAIT_US/2);
do {
// to center of next bit
_delay_us(WAIT_US);
if (SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT)) {
data |= pos;
}
#ifdef SERIAL_BIT_ORDER_MSB
pos >>= 1;
#else
pos <<= 1;
#endif
} while (pos);
// to center of stop bit
_delay_us(WAIT_US);
#ifdef SERIAL_NEGATIVE_LOGIC
data = ~data;
#endif
uint8_t next = (rbuf_head + 1) % RBUF_SIZE; uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
if (next != rbuf_tail) { if (next != rbuf_tail) {
rbuf[rbuf_head] = SERIAL_RX_DATA; rbuf[rbuf_head] = data;
rbuf_head = next; rbuf_head = next;
} }
SERIAL_RXD_INT_EXIT();
} }

2
rules.mk
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@ -252,7 +252,7 @@ EXTMEMOPTS =
# (.vectors+0x30): relocation truncated to fit: R_AVR_13_PCREL against symbol `__vector_12' # (.vectors+0x30): relocation truncated to fit: R_AVR_13_PCREL against symbol `__vector_12'
# #
LDFLAGS = -Wl,-Map=$(TARGET).map,--cref LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
LDFLAGS += -Wl,--relax #LDFLAGS += -Wl,--relax
LDFLAGS += -Wl,--gc-sections LDFLAGS += -Wl,--gc-sections
LDFLAGS += $(EXTMEMOPTS) LDFLAGS += $(EXTMEMOPTS)
LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS)) LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))