TI专家，您好：
目前使用tmp117测温，使用实例代码配置后，读取室温为31.3℃，但实际室温为23.6℃，用手捏住温度会上升。测试了两个芯片问题均相同，烦请协助分析下原因，谢谢！
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代码：
uint16_t temperature;
uint8_t txBuffer[3];
uint8_t rxBuffer[2];
I2C_Transaction i2cTransaction;
/* Point to the T ambient register and read its 2 bytes */
txBuffer[0] = TMP117_OBJ_TEMP;
i2cTransaction.slaveAddress = Board_TMP_ADDR;
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = 1;
i2cTransaction.readBuf = rxBuffer;
i2cTransaction.readCount = 2;
if (I2C_transfer(i2c, &i2cTransaction)) {
/* Extract degrees C from the received data; see TMP117 datasheet */
temperature = (rxBuffer[0] << 8) | (rxBuffer[1]);
/*
* If the MSB is set '1', then we have a 2's complement
* negative value which needs to be sign extended 7.8125 mC
*/
if (temperature & 0x8000) {
temperature ^= 0xFFFF;
temperature = temperature + 1;
}
}
else {
Display_printf(dispHandle, 0, 0, "I2C Bus fault");
}
/* Start the next conversion in one-shot mode */
txBuffer[0] = TMP117_OBJ_CONFIG;
txBuffer[1] = 0x0C;
txBuffer[2] = 0x20;
i2cTransaction.slaveAddress = Board_TMP_ADDR;
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = 3;
i2cTransaction.readBuf = rxBuffer;
i2cTransaction.readCount = 0;
/* Wait for the I2C access for configuration. If it fails
* then sleep for 1 second and try again. This is a must
* to do before reading the device. */
while(!(I2C_transfer(i2c, &i2cTransaction)));
return(temperature);
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tmp117使用方法：
①配置config寄存器为如上单次模式。
----以下为while（1）----
②读取config寄存器。
③读取温度数据。
④读取config寄存器数据。
⑤配置config寄存器为如上单次模式。
⑥读取config寄存器数据。
通过打印config寄存器配置：如下
0> <info> app: cfg0:2C20 （第②步）
0> <info> app: T:3136 （第③步）
0> <info> app: cfg1:0C20 （第④步）
0> <info> app: cfg2:0C20 （第⑥步）
