sun_usb: Fix serial recv intrrupt trriger edge #228
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1 changed files with 8 additions and 2 deletions
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@ -56,12 +56,18 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#define SERIAL_SOFT_RXD_BIT 2
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#define SERIAL_SOFT_RXD_VECT INT2_vect
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/* RXD Interupt */
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#ifdef SERIAL_SOFT_LOGIC_NEGATIVE
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/* enable interrupt: INT2(rising edge) */
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#define INTR_TRIG_EDGE ((1<<ISC21)|(1<<ISC20))
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#else
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/* enable interrupt: INT2(falling edge) */
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#define INTR_TRIG_EDGE ((1<<ISC21)|(0<<ISC20))
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#endif
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#define SERIAL_SOFT_RXD_INIT() do { \
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/* pin configuration: input with pull-up */ \
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SERIAL_SOFT_RXD_DDR &= ~(1<<SERIAL_SOFT_RXD_BIT); \
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SERIAL_SOFT_RXD_PORT |= (1<<SERIAL_SOFT_RXD_BIT); \
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/* enable interrupt: INT2(rising edge) */ \
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EICRA |= ((1<<ISC21)|(1<<ISC20)); \
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EICRA |= INTR_TRIG_EDGE; \
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EIMSK |= (1<<INT2); \
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sei(); \
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} while (0)
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