stm32: Add support for configuring open drain output mode

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2019-08-20 13:32:14 -04:00
parent c930fc392b
commit e32be928dc
3 changed files with 9 additions and 2 deletions
--- a/src/stm32/internal.h
+++ b/src/stm32/internal.h
@@ -18,6 +18,7 @@ extern GPIO_TypeDef * const digital_regs[];

 #define GPIO_INPUT 0
 #define GPIO_OUTPUT 1
+#define GPIO_OPEN_DRAIN 0x100
 #define GPIO_FUNCTION(fn) (2 | ((fn) << 4))
 #define GPIO_ANALOG 3