2016金属物体探测定位器（B题含代码）报告(5)

void SetVCoreUp (unsigned int level) //设置MCU核心电压,初始化电源模块 {

//取得PMM寄存器写入权限 PMMCTL0_H = 0xA5;

// Make sure no flags are set for iterative sequences //while ((PMMIFG & SVSMHDLYIFG) == 0); //while ((PMMIFG & SVSMLDLYIFG) == 0); // Set SVS/SVM high side new level

SVSMHCTL = SVSHE + SVSHRVL0 * level + SVMHE + SVSMHRRL0 * level;

// Set SVM low side to new level

SVSMLCTL = SVSLE + SVMLE + SVSMLRRL0 * level; // Wait till SVM is settled

while ((PMMIFG & SVSMLDLYIFG) == 0); // Clear already set flags

PMMIFG &= ~(SVMLVLRIFG + SVMLIFG); // Set VCore to new level

PMMCTL0_L = PMMCOREV0 * level; // Wait till new level reached if ((PMMIFG & SVMLIFG))

while ((PMMIFG & SVMLVLRIFG) == 0);

21

// Set SVS/SVM low side to new level

SVSMLCTL = SVSLE + SVSLRVL0 * level + SVMLE + SVSMLRRL0 * level;

// Lock PMM registers for write access PMMCTL0_H = 0x00; }

// LDC BITMASKS

#define LDC1000_BIT_AMPLITUDE 0x18 #define LDC1000_BIT_RESPTIME 0x07 #define LDC1000_BIT_CLKSEL 0x02 #define LDC1000_BIT_CLKPD 0x01 #define LDC1000_BIT_INTMODE 0x07 #define LDC1000_BIT_PWRMODE 0x01 #define LDC1000_BIT_STATUSOSC 0x80 #define LDC1000_BIT_STATUSDRDYB 0x40 #define LDC1000_BIT_STATUSWAKEUP 0x20 #define LDC1000_BIT_STATUSCOMP 0x10

extern char p[2]; extern char freq[3];

22

extern int pMIN; extern int freqMIN;

extern int pMAX; extern int freqMAX;

extern int pTEMP; extern int freqTEMP;

char spi_readByte( char addr, char * data);

char spi_readWord(char addr, unsigned int * data); // Big Endian char spi_readBytes( char addr, char * buffer, unsigned char len); char spi_writeByte(char addr, char data);

char spi_writeWord(char addr, unsigned int data); // Big Endian char spi_writeBytes( char addr, char * buffer, unsigned char len); #endif

LDC1000.c文件：

#include \

static unsigned char txlen;

23

static unsigned char rxlen; static char *txbuf; static char *rxbuf; static char txaddr; static char wordbuf[2];

char p[2]; char freq[3];

int pMIN; int freqMIN;

int pMAX; int freqMAX;

int pTEMP; int freqTEMP;

char spi_readByte( char addr, char * data) {

24

rxlen = 1; rxbuf = data; txaddr = addr | 0x80; P4OUT &= ~BIT0;

while (!(UCB1IFG&UCTXIFG)); UCB1TXBUF = txaddr;

while (!(UCB1IFG&UCTXIFG)); UCB1TXBUF = 0;

while (UCB1STAT & UCBUSY); * rxbuf = UCB1RXBUF; while (UCB1STAT & UCBUSY); P4OUT |= BIT0; return 0; }

char spi_readWord(char addr, unsigned int * data) {

rxlen = 2;

rxbuf = &wordbuf[0]; txaddr = addr | 0x80;

25