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drivers: gpio: Add open drain output support for STM32 #19130

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drivers: gpio: Add open drain output support for STM32 #19130

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4 changes: 4 additions & 0 deletions drivers/gpio/gpio_stm32.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,10 @@ const int gpio_stm32_flags_to_conf(int flags, int *pincfg)

if (direction == GPIO_DIR_OUT) {
*pincfg = STM32_PINCFG_MODE_OUTPUT;
if (flags & GPIO_DS_DISCONNECT_HIGH) {
/* open drain */
*pincfg |= STM32_PINCFG_TYPE_OPEN_DRAIN;
}
} else {
/* pull-{up,down} maybe? */
*pincfg = STM32_PINCFG_MODE_INPUT;
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1 change: 1 addition & 0 deletions drivers/gpio/gpio_stm32.h
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Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,7 @@
STM32_PUPD_NO_PULL)
#else
#define STM32_PINCFG_MODE_OUTPUT STM32_MODER_OUTPUT_MODE
#define STM32_PINCFG_TYPE_OPEN_DRAIN STM32_OTYPER_OPEN_DRAIN
#define STM32_PINCFG_MODE_INPUT STM32_MODER_INPUT_MODE
#define STM32_PINCFG_PULL_UP STM32_PUPDR_PULL_UP
#define STM32_PINCFG_PULL_DOWN STM32_PUPDR_PULL_DOWN
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