TI中文支持网Part Number:DAC8760
你好，请问DAC8760在切换输出为电流输出时，VOUT引脚一直会有一个变化的电压，在电流输出时我如何禁用VOUT呢？
Amy Luo：
您好，
将 Configuration寄存器的[10:7]位配置为0 ，Control寄存器的 RANGE bits配置输出范围，您是这样配置的吗
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user6310669：
是的，下面是我初始化的程序；
int main(void){ init_readConfig(); system_init(); //DAC8760_Setup((DAC8760_RANGE_0V_10V + DAC8760_OUTEN), 0, 0, 0); //DAC8760_SetOutValue(0x0); SysCtlDelay(10000); switch (DA_Setup_user[1]) { case 0:// -10～+10V DAC8760_Setup((DAC8760_RANGE_M10V_P10V + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(32767);// Set DAC8760 output value to 0V break; case 1:// 0～10V DAC8760_Setup((DAC8760_RANGE_0V_10V + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(0); // Set DAC8760 output value to 0V break; case 2:// 0～5V DAC8760_Setup((DAC8760_RANGE_0V_5V + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(0); // Set DAC8760 output value to 0V break; case 3:// 0～20mA DAC8760_Setup((DAC8760_RANGE_0MA_20MA + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(0); // Set DAC8760 output value to 0V break; case 4:// -5～+5V DAC8760_Setup((DAC8760_RANGE_M5V_P5V + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(32767);// Set DAC8760 output value to 0V break; case 5:// 4～20mA DAC8760_Setup((DAC8760_RANGE_4MA_20MA + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(0); // Set DAC8760 output value to 0V break; default: DAC8760_Setup((DAC8760_RANGE_M10V_P10V + DAC8760_OUTEN), 0, 0, 0); DAC8760_SetOutValue(32767);// Set DAC8760 output value to 0V break; }
}
void DAC8760_Setup (uint16_t controlReg, uint16_t configurationReg, uint16_t gainCalReg, uint16_t zeroCalReg){ DAC8760_SPISetupMaster(); DAC8760_Reset(); DAC8760_Nop(); DAC8760_WriteReg (controlReg, DAC8760_WRITE_CONTROL_REGISTER); DAC8760_WriteReg (configurationReg, DAC8760_WRITE_CONFIGURATION_REGISTER); DAC8760_WriteReg (gainCalReg, DAC8760_WRITE_GAIN_CALIBRATION_REGISTER); DAC8760_WriteReg (zeroCalReg, DAC8760_WRITE_ZERO_CALIBRATION_REGISTER);
}
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Amy Luo：
抱歉，我这里无法验证您的程序，您可以把您配置的寄存器值读出来告诉我吗?我看一下Configuration和Control寄存器您是写入的是什么
