TI中文支持网我只需要 ALERT 功能。
Continous-conversion mode 下
COMP_MODE ：置0设置为Traditional mode;
COMP_POL ：置0 active low
COMP_LAT：置0 Non-latching comparator
COMP_QUE[1:0] ：10
设置阈值
LowThreshold = 1220
highThreshold = 1280
用直流源模拟输入：ADC 采样由1800-1000，ALERT 一直为低电平。并未出现手册中 Figure 28 图形
另外：我将Hi_thresh register MSB to 1 and the Lo_thresh register MSB to 0 。ALERT pin是有连续的波形产生的，说明电路，CPU和ads1115通信 正常。
我的需求就是，ADC采样值超出阈值后，ALERT pin有电平变化,请问如何配置?
user151383853：
The ALERT/RDY pin can also be configured as a conversion ready pin. Set the most-significant bit of the Hi_thresh register to 1 and the most-significant bit of Lo_thresh register to 0 to enable the pin as a conversion ready pin. The COMP_POL bit continues to function as expected. Set the COMP_QUE[1:0] bits to any 2-bit value other than 11 to keep the ALERT/RDY pin enabled, and allow the conversion ready signal to appear at the ALERT/RDY pin output. The COMP_MODE and COMP_LAT bits no longer control any function. When configured as a conversion ready pin, ALERT/RDY continues to require a pullup resistor. The ADS111x provide an approximately 8-µs conversion ready pulse on the ALERT/RDY pin at the end of each conversion in continuous-conversion mode, as shown in Figure 29. In single-shot mode, the ALERT/RDY pin asserts low at the end of a conversion if the COMP_POL bit is set to 0.
user6067219：
回复 user151383853:
我使用AIN0 ，作为输入源
配置如下：
1.Config 寄存机 high Byte 0x42 ,low Byte 0xF8;
2.设置 阈值： LowThresholdValue 1800，HighThresholdValue2500
3. 输入ADC 检测值在 1200-3000变化，ALERT 引脚无变化。
请问如何设置， ALert才能得到下图波形
