esp8266_gpio_pin_allocations
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esp8266_gpio_pin_allocations [2017/11/10 02:12] ekriirke [LED Pin] no comments on IO1/TX being low affecting boot process |
esp8266_gpio_pin_allocations [2017/11/10 02:18] (current) ekriirke [Pin Functions] |
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| ^FLASH (NormalRunning) | 0 | 1 | x or 1 | \\ | ^FLASH (NormalRunning) | 0 | 1 | x or 1 | \\ | ||
| - | __Note__ :- GPIO2 It is considered safer to pull it high with a resistor on boot rather than leave it floating to avoid possible chip damage if pin is pulled high by your program but also see [[http://www.esp8266.com/viewtopic.php?f=6&t=3862&p=22524#p22524|http://www.esp8266.com/viewtopic.php?f=6&t=3862&p=22524#p22524]]. | + | __Notes__ :- GPIO2 It is considered safer to pull it high with a resistor on boot rather than leave it floating to avoid possible chip damage if pin is pulled high by your program but also see [[http://www.esp8266.com/viewtopic.php?f=6&t=3862&p=22524#p22524|http://www.esp8266.com/viewtopic.php?f=6&t=3862&p=22524#p22524]]. GPIO1 (UART TX) also has an effect on boot if pulled low; it will not boot in this case. |
| FLASH mode is when running the program. Take GPIO0 high or float or it will stall on first reset, intentional or not. | FLASH mode is when running the program. Take GPIO0 high or float or it will stall on first reset, intentional or not. | ||
esp8266_gpio_pin_allocations.txt · Last modified: 2017/11/10 02:18 by ekriirke