这是学习SI4432的很好资料 void main (void) { U8 status; U8 RxPacketLength; U8 i; PCA0MD &= ~0x40; // disable watchdog // Configure DC/DC // Needed for Si1004/5 support only #ifdef SI1000_DAUGHTER_CARD DC0CN = 0x43; // 20ns min, big SW, 2.1V DC0