Page 1 of 1

DAC 不准???

Posted: Tue Aug 17, 2021 2:48 am
by yogi_yi
使用 ESP32-S2-Saola-1 模块
dac_output_enable(DAC_CHANNEL_1);

dac_output_voltage(DAC_CHANNEL_1, 255);
3.3V供电
IO_17脚输出电压只有3.196

Re: DAC 不准???

Posted: Thu Aug 19, 2021 10:05 am
by ESP_Eavo
请问下,是单天线还是多天线?

Re: DAC 不准???

Posted: Thu Aug 19, 2021 12:40 pm
by yogi_yi
就是那个型号的官方模块

单天线多天线是什么意思?

Re: DAC 不准???

Posted: Sat Aug 21, 2021 8:38 am
by yogi_yi
有没晓得的?

Re: DAC 不准???

Posted: Mon Aug 23, 2021 11:46 am
by BigBowlWhiteMeat
是的,由于内部压降, ESP32 的 DAC 输出 最高电平在 3.2V 左右

Re: DAC 不准???

Posted: Wed Aug 25, 2021 10:38 am
by yogi_yi
如何将内部压降考虑后,计算理论输出值? 内部压降如何考虑到计算公式里?