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我在使用msp430与eeprom进行通信，430为master，使用1Mhz内部DCO主频，然后，因为后期需要将主频提高到12Mhz，所以做了一些修改，发现，修改后i2c写入e2rom成功，读取失败。请教一下，谢谢~
读程序
uint8 eeprom_read(uint8 addr1st,uint8 addr2st,uint8 *pword_val) { UCB0CTL1 |= UCTR;//write UCB0CTL1 |= UCTXSTT; UCB0TXBUF=addr1st; while(!(IFG2 & UCB0TXIFG)) { if(UCB0STAT & UCACKIFG) return 1; } UCB0TXBUF=addr1st; while(!(IFG2 & UCB0TXIFG)) { if(UCB0STAT & UCACKIFG) return 1; } UCB0CTL1 &= ~UCTR;//READ UCB0CTL1 |= UCTXSTT; while(UCB0CTL1 & UCTXSTT); UCB0CTL1 |= UCTXSTP; while(UCB0CTL1 & UCRXIFG); *pword_val=UCB0RXBUF; while(UCB0CTL1 & UCTXSTP); return 0; }
用逻辑分析仪或者示波器看过时序了吗？
