您好，我现在在使用D121-HMI board调试RTP外设，屏幕使用的是7寸RGB接口的电阻触摸屏，程序使用Lubanlite。
使用指令test_rtp_adc分别测试通道1的接地，悬空，接3.3V，测试结果应该是不正常的，请问怎么解决？
测试结果如下：
①通道0接3.3V:
aic /> test_rtp_adc -r 1 -n 5 -t 3.3
[0] ch1: 4055
voltage:2.4755 v
[1] ch1: 4055
voltage:2.4755 v
[2] ch1: 4055
voltage:2.4755 v
[3] ch1: 4055
voltage:2.4755 v
[4] ch1: 4055
voltage:2.4755 v
[5] ch1: 4055
②通道0接地:
aic /> test_rtp_adc -r 1 -n 5 -t 3.3
[E] hal_adcim_adc2voltage()192 Out of the input voltage range - -33
[0] ch1: 0
voltage:0.0000 v
[E] hal_adcim_adc2voltage()192 Out of the input voltage range - -32
[1] ch1: 0
voltage:0.0000 v
[E] hal_adcim_adc2voltage()192 Out of the input voltage range - -28
[2] ch1: 0
voltage:0.0000 v
[E] hal_adcim_adc2voltage()192 Out of the input voltage range - -28
[3] ch1: 0
voltage:0.0000 v
[E] hal_adcim_adc2voltage()192 Out of the input voltage range - -31
[4] ch1: 0
voltage:0.0000 v
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