BCSCTL1 = CALBC1_1MHZ; // Set range to 1MHz
DCOCTL = CALDCO_1MHZ; // Set DCO to 1MHz. Declared in msp430g2553.h
这个为什么会设置内部时钟晶振为1M
#define CALDCO_1MHZ_ (0x10FEu) /* DCOCTL Calibration Data for 1MHz */
READ_ONLY DEFC( CALDCO_1MHZ , CALDCO_1MHZ_)
这个预定义又怎么解释
#define DEFC(name, address) __no_init volatile unsigned char name @ address;
这一行@指令又表示什么？晕死