TI中文支持网请大侠帮忙看下，实现的功能是按下按键，单片机读取BQ27541里面的SOC，然后显示电量，软件调试OK，用实物调试的时候，读不出数据，IE2不能置位，附件是原理图，请大侠帮忙看看，谢谢
Rongxi LV：
附件是程序文件，用I2C通讯，I2c程序是TI官网推荐程序，软件调试OK，硬件调试的时候，读不出数据，IE2不能置位。以下是程序，附件是I2C程序文件，请大侠帮忙看看，谢谢！
#include "io430g2553.h"#include "io430.h"#include "F:\项目\程序编写\2016\lib\I2C_USCI\TI_USCI_I2C_master.h"#include "bq27541.h"#define _I2C_USCI#define I2CSLAVEADDR 0x55 // 7-bit slave address#define uint unsigned int#define BUFFERSIZE 32 // # of bytes for Tx & Rx buffersunsigned char TxData[BUFFERSIZE]; // Stores data bytes to be TX'dunsigned char RxData[BUFFERSIZE]; // Stores data bytes that are RX'dunsigned int SOC; // Stores State of Chargeunsigned int transBytes2UnsignedInt(unsigned char msb, unsigned char lsb);void MSP430_bq27541_read(unsigned char cmd, unsigned int bytes);unsigned int transBytes2UnsignedInt(unsigned char msb, unsigned char lsb){ unsigned int tmp; tmp = ((msb << 8) & 0xFF00); return ((unsigned int)(tmp + lsb) & 0x0000FFFF); }void MSP430_bq27541_read(unsigned char cmd, unsigned int bytes){ unsigned char tx[1]; tx[0] = cmd; TI_USCI_I2CWrite(I2CSLAVEADDR, 1, 1, tx); TI_USCI_I2CRead(I2CSLAVEADDR, bytes, 0, RxData); }void main(void){ WDTCTL = WDTPW +WDTHOLD; // Stop Watchdog Time BCSCTL1 = CALBC1_1MHZ; // Set DCO to 1 MHz DCOCTL = CALDCO_1MHZ; P1IES |= BIT0; // P1.0选择下降沿中断 P1IE |= BIT0; // 打开中断使能 P2DIR |= BIT1+BIT2+BIT3+BIT4; // 设置P2.1 ,2.2 ,2.3, 2.4 为输出状态 P2OUT |= BIT1+ BIT2 + BIT3 + BIT4; // 设置P2.1 ,2.2 ,2.3, 2.4 输出为高 for(unsigned int i=0;i<65000;i++); // 延时 P2OUT &= ~(BIT1+ BIT2 + BIT3 + BIT4); // 设置P2.1 ,2.2 ,2.3, 2.4 输出为低 while (1) { __enable_interrupt(); TI_USCI_I2C_transmitinit(I2CSLAVEADDR,I2CCLOCKPRESCALER); while ( TI_USCI_I2C_notready() ); MSP430_bq27541_read(bq27541CMD_SOC_LSB, 2); SOC = transBytes2UnsignedInt(RxData[1], RxData[0]); __bis_SR_register(SCG1+SCG0+CPUOFF + GIE); P2OUT &= ~(BIT1+ BIT2 + BIT3 + BIT4); }}#pragma vector = PORT1_VECTOR__interrupt void PORT1_ISR(void){ if(P1IFG & 0x01) { for(unsigned int i=0;i<6000;i++); if(P1IFG & 0x01) { P1IFG ^= 0x01; __enable_interrupt(); TI_USCI_I2C_transmitinit(I2CSLAVEADDR,I2CCLOCKPRESCALER); while ( TI_USCI_I2C_notready() ); MSP430_bq27541_read(bq27541CMD_SOC_LSB, 2); SOC = transBytes2UnsignedInt(RxData[1], RxData[0]); // SOC = 90; if (SOC == 0) { while(!(P1IN & BIT0)) { P2OUT |= BIT1 + BIT4; } } else if (0<SOC <= 25) { while (!(P1IN & BIT0)) { P2OUT ^= BIT1; for(unsigned int i=0;i<35000;i++); } } else if(25<SOC && SOC<=55) { while (!(P1IN & BIT0)) { P2OUT |= BIT1+ BIT2; } } else if(55<SOC && SOC<=85) { while (!(P1IN & BIT0)) { P2OUT |= BIT1+ BIT2 + BIT3; } } else if(85<SOC) { while (!(P1IN & BIT0)) { P2OUT |= BIT1+ BIT2 + BIT3 + BIT4; } } } } __bic_SR_register_on_exit(SCG1+SCG0+CPUOFF);}
