查看ESP32 RTC的源代码

==== rtc_pad_ext_wakeup ====

Following:

* p1 is the 1st parameter of rtc_pad_ext_wakeup
* p2 is the 2nd parameter of rtc_pad_ext_wakeup
* p3 is the 3rd parameter of rtc_pad_ext_wakeup

<source lang=c>
0x4008ee9c <rtc_pad_ext_wakeup>: entry	a1, 32
0x4008ee9f <rtc_pad_ext_wakeup+3>: mov.n	a10, a2
0x4008eea1 <rtc_pad_ext_wakeup+5>: movi.n	a11, 1
0x4008eea3 <rtc_pad_ext_wakeup+7>: call8	0x4008d2f4 <rtc_pads_muxsel>   /* rtc_pads_muxsel (p1, 1) */

0x4008eea6 <rtc_pad_ext_wakeup+10>: mov.n	a10, a2
0x4008eea8 <rtc_pad_ext_wakeup+12>: movi.n	a11, 0
0x4008eeaa <rtc_pad_ext_wakeup+14>: call8	0x4008d54c <rtc_pads_funsel>   /* rtc_pads_funsel (p1, 0) */

0x4008eead <rtc_pad_ext_wakeup+17>: l32r	a8, 0x4008edf4  /* a8 = *(4008edf4) = 0x3ff4840c, RTC_GPIO_ENABLE_REG */
0x4008eeb0 <rtc_pad_ext_wakeup+20>: slli	a9, a2, 14
0x4008eeb3 <rtc_pad_ext_wakeup+23>: memw
0x4008eeb6 <rtc_pad_ext_wakeup+26>: l32i.n	a10, a8, 0  /* a10 = read RTC_GPIO_ENABLE_REG */
0x4008eeb8 <rtc_pad_ext_wakeup+28>: movi.n	a11, -1  /* a11 = 0xffff ffff */
0x4008eeba <rtc_pad_ext_wakeup+30>: xor	a9, a11, a9  /* a9 = ~a9 */
0x4008eebd <rtc_pad_ext_wakeup+33>: and	a9, a9, a10  /* a9 = a10 & a9 */
0x4008eec0 <rtc_pad_ext_wakeup+36>: memw
0x4008eec3 <rtc_pad_ext_wakeup+39>: s32i.n	a9, a8, 0  /* store to RTC_GPIO_ENABLE_REG, disable the output of the RTC_PAD */

0x4008eec5 <rtc_pad_ext_wakeup+41>: mov.n	a10, a2
0x4008eec7 <rtc_pad_ext_wakeup+43>: movi	a11, 1
0x4008eeca <rtc_pad_ext_wakeup+46>: call8	0x4008d794 <rtc_pads_slpsel>  /* rtc_pads_slpsel (p1, 1) */

0x4008eecd <rtc_pad_ext_wakeup+49>: mov.n	a10, a2
0x4008eecf <rtc_pad_ext_wakeup+51>: movi	a11, 0
0x4008eed2 <rtc_pad_ext_wakeup+54>: call8	0x4008d9dc <rtc_pads_slpoe>  /* rtc_pads_slpoe (p1, 0) */

0x4008eed5 <rtc_pad_ext_wakeup+57>: mov.n	a10, a2
0x4008eed7 <rtc_pad_ext_wakeup+59>: movi	a11, 1
0x4008eeda <rtc_pad_ext_wakeup+62>: call8	0x4008db68 <rtc_pads_slpie>  /* rtc_pads_slpie (p1, 1) */

0x4008eedd <rtc_pad_ext_wakeup+65>: mov.n	a10, a2
0x4008eedf <rtc_pad_ext_wakeup+67>: movi	a11, 1
0x4008eee2 <rtc_pad_ext_wakeup+70>: call8	0x4008dcf0 <rtc_pads_funie>  /* rtc_pads_funie (p1, 1) */

0x4008eee5 <rtc_pad_ext_wakeup+73>: mov.n	a10, a2
0x4008eee7 <rtc_pad_ext_wakeup+75>: movi	a11, 0
0x4008eeea <rtc_pad_ext_wakeup+78>: call8	0x4008de78 <rtc_pads_pu>  /* rtc_pads_pu (p1, 0) */

0x4008eeed <rtc_pad_ext_wakeup+81>: mov.n	a10, a2
0x4008eeef <rtc_pad_ext_wakeup+83>: movi.n	a11, 0
0x4008eef1 <rtc_pad_ext_wakeup+85>: call8	0x4008e000 <rtc_pads_pd>  /* rtc_pads_pd (p1, 0) */

0x4008eef4 <rtc_pad_ext_wakeup+88>: l32r	a8, 0x4008ee90  /* a8 = *(0x4008ee90) = 0x3ff484bc, RTC_IO_EXT_WAKEUP0_REG */
0x4008eef7 <rtc_pad_ext_wakeup+91>: l32r	a2, 0x4008ee94  /* a2 = *(0x4008ee94) = 0x07ffffff */
0x4008eefa <rtc_pad_ext_wakeup+94>: memw
0x4008eefd <rtc_pad_ext_wakeup+97>: l32i.n	a9, a8, 0  /* a9 = read RTC_IO_EXT_WAKEUP0_REG */
0x4008eeff <rtc_pad_ext_wakeup+99>: slli	a3, a3, 27  /* a3 = p2 << 27 */
0x4008ef02 <rtc_pad_ext_wakeup+102>: and	a9, a9, a2  /* a9 = RTC_IO_EXT_WAKEUP0_REG & 0x07ff ffff */
0x4008ef05 <rtc_pad_ext_wakeup+105>: or	a3, a3, a9  /* a3 = (p2 << 27) | a9 */

0x4008ef08 <rtc_pad_ext_wakeup+108>: l32r	a2, 0x4008ee98  /* a2 = *(0x4008ee98) = 0x3ff48060, RTC_CNTL_EXT_WAKEUP_CONF_REG */
0x4008ef0b <rtc_pad_ext_wakeup+111>: memw
0x4008ef0e <rtc_pad_ext_wakeup+114>: s32i.n	a3, a8, 0  /* write to RTC_IO_EXT_WAKEUP0_REG */

0x4008ef10 <rtc_pad_ext_wakeup+116>: memw
0x4008ef13 <rtc_pad_ext_wakeup+119>: l32i.n	a8, a2, 0  /* a8 = read RTC_CNTL_EXT_WAKEUP_CONF_REG */
0x4008ef15 <rtc_pad_ext_wakeup+121>: l32r	a3, 0x4008838c  /* a3 = *(0x4008838c) = 0xbfffffff */

0x4008ef18 <rtc_pad_ext_wakeup+124>: extui	a4, a4, 0, 1  /* a4 = p3[0] */
0x4008ef1b <rtc_pad_ext_wakeup+127>: slli	a4, a4, 30  /* a4 = a4 << 30 */

0x4008ef1e <rtc_pad_ext_wakeup+130>: and	a3, a8, a3  /* a3 = a8 & a3 = RTC_CNTL_EXT_WAKEUP_CONF_REG & 0xbfff ffff */
0x4008ef21 <rtc_pad_ext_wakeup+133>: or	a4, a4, a3  /* a4 = RTC_CNTL_EXT_WAKEUP_CONF_REG & 0xbfff ffff | (p3[0] << 30) */
0x4008ef24 <rtc_pad_ext_wakeup+136>: memw
0x4008ef27 <rtc_pad_ext_wakeup+139>: s32i.n	a4, a2, 0  /* write to RTC_CNTL_EXT_WAKEUP_CONF_REG */

 /* use the EXT_WAKEUP0, 0: external wakeup at low level  1: external wakeup at high level */

0x4008ef29 <rtc_pad_ext_wakeup+141>: retw.n
</source>

So:

<source lang=c>
typedef enum {
    RTC_GPIO0 = BIT(0),
    RTC_GPIO1 = BIT(1),
    ......
    ......
    RTC_GPIO17 = BIT(17)
} rtc_gpio_num_t;

/*
 * rtc_io_num is the number of rtc_pad. e.g. The number of RTC_GPIO5 is 5
 * wakeup_level = 0: external wakeup at low level
 * wakeup_level = 1: external wakeup at high level
 */
 void rtc_pad_ext_wakeup(rtc_gpio_num_t rtc_pad, uint8_t rtc_io_num, uint8_t wakeup_level);
</source>

<br>