diff options
Diffstat (limited to 'src/stm32/stm32f1.c')
| -rw-r--r-- | src/stm32/stm32f1.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/stm32/stm32f1.c b/src/stm32/stm32f1.c index 927ee1db..e5defd96 100644 --- a/src/stm32/stm32f1.c +++ b/src/stm32/stm32f1.c @@ -75,10 +75,15 @@ gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup) cfg = pullup ? 0x8 : 0x4; } else if (mode == GPIO_OUTPUT) { cfg = 0x1; + } else if (mode == (GPIO_OUTPUT | GPIO_OPEN_DRAIN)) { + cfg = 0x5; } else if (mode == GPIO_ANALOG) { cfg = 0x0; } else { - if (pullup > 0) + if (mode & GPIO_OPEN_DRAIN) + // Alternate function with open-drain mode + cfg = 0xd; + else if (pullup > 0) // Alternate function input pins use GPIO_INPUT mode on the stm32f1 cfg = 0x8; else |