EXTPOLAR and EXTMODE Register Write Tip
2005-11-29 by jykim_2000
When the EINT1 becomes the Set, the EXTMODE Register of different EINT0, EINT2, EINT3 becomes the Write. The case where becomes the Write: EXTPOLAR = 0x03; EXTMODE = 0x03; or, EXTPOLAR = 0x07; EXTMODE = 0x03; or, EXTPOLAR = 0x0f; EXTMODE = 0x0f; or, EXTPOLAR = 0x03; The case where the Write does not become: EXTPOLAR = 0x01; EXTMODE = 0x01; or, EXTPOLAR = 0x03; EXTMODE = 0x01; or, EXTPOLAR = 0x01; EXTMODE = 0x03; good luck...