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| author | Kevin O'Connor <kevin@koconnor.net> | 2019-08-20 13:32:14 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2019-08-20 19:39:49 -0400 |
| commit | e32be928dc042b61876384fac9ef2a225d10e929 (patch) | |
| tree | 260659bab600486cb42b9dfdeaa9a764f56744b2 /src/stm32/stm32f1.c | |
| parent | c930fc392b6977b17d6f7953bd738583974208c2 (diff) | |
| download | kutter-e32be928dc042b61876384fac9ef2a225d10e929.tar.gz kutter-e32be928dc042b61876384fac9ef2a225d10e929.tar.xz kutter-e32be928dc042b61876384fac9ef2a225d10e929.zip | |
stm32: Add support for configuring open drain output mode
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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 |