Espressif ESP32 Technical Reference Manual page 92

4 IO_MUX and GPIO Matrix (GPIO, IO_MUX)
Register 4.54. RTCIO_TOUCH_PADm_REG
31 26
0 0 0 0 0 0
RTCIO_TOUCH_PADm_DAC Touch sensor slope control. 3-bit for each touch pad. Default b'100.
(R/W)
RTCIO_TOUCH_PADm_START Write 1 to start touch sensor. (R/W)
RTCIO_TOUCH_PADm_TIE_OPT Default touch sensor tie option.
0: Tied to 0 V
1: Tied to VDD_RTC voltage
(R/W)
RTCIO_TOUCH_PADm_XPD Write 1 to power on the touch sensor. (R/W)
RTCIO_TOUCH_PADm_TO_GPIO Controls the routing of touch pad input signals to IO_MUX.
1: The input signal from the touch pad is routed to IO_MUX through analog function.
0: The input signal from the touch pad is routed to IO_MUX through digital function.
(R/W)
31 27 26
0 0 0
RTCIO_EXT_WAKEUP0_SEL GPIO[0-17] can be used to wake up the chip when the chip is in the
sleep mode. This register prompts the pad source to wake up the chip when the latter is in
deep/light sleep mode. 0: select GPIO0; 1: select GPIO2, etc. (R/W)
Espressif Systems
25 23 22 21 20 19 16
1 0 0 0 0 0 0 0
Register 4.55. RTCIO_EXT_WAKEUP0_REG (0x00BC)
0 0 0 0 0 0 0 0
Submit Documentation Feedback
(m = 8, 9) (0x00B4, 0x00B8)
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
92
0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
ESP32 TRM (Version 5.2)
Reset
0
0
Reset