1. Introduction to ESP32-S2-MINI-1 & ESP32-S2-MINI-1U
RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4
RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5
RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6
RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7
RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD
RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4
RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5
RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6
RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7
RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS
RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P
RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N
RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1
RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3
RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-
RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+