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LAUNCHXL-F28069M: 连接电脑出现问题

Part Number: LAUNCHXL-F28069M


我想要测试adc模块,用示波器测试了直流电压源的输出有2v,我将它连到adcpin角后,驱动板的蓝色的闪烁后,然后黄色两个灯都开始闪烁逐渐变暗,去掉外接电压源后,驱动板再通过usb连结电脑,开始不正常,芯片一直发烫,两个黄灯正常亮,然后蓝灯闪烁熄灭,黄灯逐渐熄灭,无法识别识别,请问是什么原因