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iomux_set_function: fix merge, code comments.

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This commit is contained in:
ourairquality 2016-08-18 20:42:21 +10:00
parent 40dc3bf945
commit 20b3a5b2f8
1 changed files with 5 additions and 6 deletions
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11
core/include/esp/iomux.h
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@ -44,16 +44,15 @@ inline static esp_reg_t gpio_iomux_reg(const uint8_t gpio_number)
} }
/** /**
* Set IOMUX function. * Set the I/O Mux function. The iomux_num is an IOMUX register number, see
* gpio_to_iomux to obtain the IOMUX register number of a GPIO number.
* The 'func' is an IOMUX_GPIO<n>_FUNC_<function> value, see iomux_regs.h
* *
* @param iomux_num Index of IOMUX register. Can be converted from GPIO number
* with gpio_to_iomux.
* @param iomux_func GPIO function definition IOMUX_GPIOn_FUNC_*
*/ */
inline static void iomux_set_function(uint8_t iomux_num, uint32_t iomux_func) inline static void iomux_set_function(uint8_t iomux_num, uint32_t func)
{ {
uint32_t prev = IOMUX.PIN[iomux_num] & ~IOMUX_PIN_FUNC_MASK; uint32_t prev = IOMUX.PIN[iomux_num] & ~IOMUX_PIN_FUNC_MASK;
IOMUX.PIN[iomux_num] = iomux_func | prev; IOMUX.PIN[iomux_num] = func | prev;
} }
inline static void iomux_set_direction_flags(uint8_t iomux_num, uint32_t dir_flags) inline static void iomux_set_direction_flags(uint8_t iomux_num, uint32_t dir_flags)