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ESP8266 Datasheet(PDF) 113 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. |
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ESP8266 Datasheet(HTML) 113 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. |
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113 / 117 page  Appendix 1 GPIO Registers GPIO Base Address 0x60000300 GPIO RegAddr = PERIPHS_GPIO_BASEADDR+ (OFFSET*4) NU M OFFSET RegAddr RegName Signal BitPos SW(R/W) Description 0 0x0000 0x60000300 GPIO_OUT GPIO_BT_SEL [31:16] R/W BT-Coexist Selection register GPIO_OUT_DATA [15:0] R/W The output value when the GPIO pin is set as output. 1 0x0001 0x60000304 GPIO_OUT_W1TS [31:16] GPIO_OUT_DATA_W1TS [15:0] WO Writing 1 into a bit in this register will set the related bit in GPIO_OUT_DATA 2 0x0002 0x60000308 GPIO_OUT_W1TC [31:16] GPIO_OUT_DATA_W1TC [15:0] WO Writing 1 into a bit in this register will clear the related bit in GPIO_OUT_DATA 3 0x0003 0x6000030C GPIO_ENABLE [31:22] GPIO_SDIO_SEL [21:16] R/W SDIO-dis selection register GPIO_ENABLE_DATA [15:0] R/W The output enable register. 4 0x0004 0x60000310 GPIO_ENABLE_W1TS [31:16] GPIO_ENABLE_DATA_W1TS [15:0] WO Writing 1 into a bit in this register will set the related bit in GPIO_ENABLE_DATA 5 0x0005 0x60000314 GPIO_ENABLE_W1TC [31:16] GPIO_ENABLE_DATA_W1TC [15:0] WO Writing 1 into a bit in this register will clear the related bit in GPIO_ENABLE_DATA 6 0x0006 0x60000318 GPIO_IN GPIO_STRAPPING [31:16] The values of the strapping pins. GPIO_IN_DATA [15:0] The values of the GPIO pins when the GPIO pin is set as input. 7 0x0007 0x6000031C GPIO_STATUS [31:16] GPIO_STATUS_INTERRUPT [15:0] R/W Interrupt enable register. 8 0x0008 0x60000320 GPIO_STATUS_W1TS [31:16] GPIO_STATUS_INTERRUPT_W1TS [15:0] WO Writing 1 into a bit in this register will set the related bit in GPIO_STATUS_INTERRUPT 9 0x0009 0x60000324 GPIO_STATUS_W1TC [31:16] GPIO_STATUS_INTERRUPT_W1TC [15:0] WO Writing 1 into a bit in this register will clear the related bit in GPIO_STATUS_INTERRUPT 10 0x000a 0x60000328 GPIO_PIN0 [31:11] GPIO_PIN0_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN0_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN0_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN0_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 11 0x000b 0x6000032C GPIO_PIN1 [31:11] GPIO_PIN1_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN1_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN1_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN1_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 12 0x000c 0x60000330 GPIO_PIN2 [31:11] GPIO_PIN2_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN2_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN2_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN2_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 13 0x000d 0x60000334 GPIO_PIN3 [31:11] GPIO_PIN3_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN3_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN3_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN3_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 14 0x000e 0x60000338 GPIO_PIN4 [31:11] GPIO_PIN4_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN4_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN4_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN4_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 15 0x000f 0x6000033C GPIO_PIN5 [31:11] GPIO_PIN5_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN5_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN5_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN5_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 16 0x0010 0x60000340 GPIO_PIN6 [31:11] GPIO_PIN6_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN6_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN6_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN6_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 17 0x0011 0x60000344 GPIO_PIN7 [31:11] GPIO_PIN7_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN7_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN7_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN7_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 18 0x0012 0x60000348 GPIO_PIN8 [31:11] GPIO_PIN8_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN8_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN8_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN8_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 19 0x0013 0x6000034C GPIO_PIN9 [31:11] GPIO_PIN9_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN9_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN9_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN9_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 20 0x0014 0x60000350 GPIO_PIN10 [31:11] GPIO_PIN10_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN10_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN10_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN10_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 21 0x0015 0x60000354 GPIO_PIN11 [31:11] GPIO_PIN11_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN11_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN11_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN11_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 22 0x0016 0x60000358 GPIO_PIN12 [31:11] GPIO_PIN12_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN12_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN12_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN12_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 23 0x0017 0x6000035C GPIO_PIN13 [31:11] GPIO_PIN13_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN13_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN13_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN13_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 24 0x0018 0x60000360 GPIO_PIN14 [31:11] GPIO_PIN14_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN14_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN14_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN14_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 25 0x0019 0x60000364 GPIO_PIN15 [31:11] GPIO_PIN15_WAKEUP_ENABLE [10] R/W 0: disable; 1: enable GPIO wakeup CPU, only when GPIO_PIN0_INT_TYPE is 0x4 or 0x5 GPIO_PIN15_INT_TYPE [9:7] R/W 0: disable; 1: positive edge; 2: negative edge; 3: both types of edge; 4: low-level; 5: high- level [6:3] GPIO_PIN15_DRIVER [2] R/W 1: open drain; 0: normal [1] GPIO_PIN15_SOURCE [0] R/W 1: sigma-delta; 0: GPIO_DATA 26 0x001a 0x60000368 GPIO_SIGMA_DELTA [31:17] SIGMA_DELTA_ENABLE [16] R/W 1: enable sigma-delta; 0: disable SIGMA_DELTA_PRESCALAR [15:8] R/W Clock pre-divider for sigma-delta. SIGMA_DELTA_TARGET [7:0] R/W target level of the sigma-delta. It is a signed byte. 27 0x001b 0x6000036C GPIO_RTC_CALIB_SYNC RTC_CALIB_START [31] R/W Positvie edge of this bit will trigger the RTC-clock-calibration process. [30:10] RTC_PERIOD_NUM [9:0] R/W The cycle number of RTC-clock during RTC-clock-calibration 28 0x001c 0x60000370 GPIO_RTC_CALIB_VALUE RTC_CALIB_RDY [31] 0: during RTC-clock-calibration; 1: RTC-clock-calibration is done RTC_CALIB_RDY_REAL [30] 0: during RTC-clock-calibration; 1: RTC-clock-calibration is done [29:20] RTC_CALIB_VALUE [19:0] The cycle number of clk_xtal (crystal clock) for the RTC_PERIOD_NUM cycles of RTC- clock |
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