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Add gpio_set_iomux_function().

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This commit is contained in:
ourairquality 2016-08-15 22:23:45 +10:00
parent 8405b989f9
commit 4b77138f71
2 changed files with 20 additions and 15 deletions
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10
core/include/esp/gpio.h
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@ -143,6 +143,16 @@ static inline gpio_inttype_t gpio_get_interrupt(const uint8_t gpio_num)
return (gpio_inttype_t)FIELD2VAL(GPIO_CONF_INTTYPE, GPIO.CONF[gpio_num]);
}
/* Set GPIO I/O Mux function.
* The 'func' is an IOMUX_GPIO<n>_FUNC_<function> value, see iomux_regs.h
*/
inline static void gpio_set_iomux_function(const uint8_t gpio_num, uint32_t func)
{
uint8_t iomux_num = gpio_to_iomux(gpio_num);
uint32_t prev = IOMUX.PIN[iomux_num] & ~IOMUX_PIN_FUNC_MASK;
IOMUX.PIN[iomux_num] = func | prev;
}
#ifdef __cplusplus
}
#endif