diff options
Diffstat (limited to 'stm/usrsw.c')
| -rw-r--r-- | stm/usrsw.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/stm/usrsw.c b/stm/usrsw.c index 1feb271733..9d1ee50ffb 100644 --- a/stm/usrsw.c +++ b/stm/usrsw.c @@ -12,6 +12,7 @@ #if defined (PYBOARD) #define USRSW_PORT (GPIOA) #define USRSW_PIN (GPIO_Pin_13) + #define USRSW_PUPD (GPIO_PuPd_UP) #define USRSW_EXTI_PIN (EXTI_PinSource13) #define USRSW_EXTI_PORT (EXTI_PortSourceGPIOA) #define USRSW_EXTI_LINE (EXTI_Line13) @@ -20,18 +21,20 @@ #elif defined (STM32F4DISC) #define USRSW_PORT (GPIOA) #define USRSW_PIN (GPIO_Pin_0) + #define USRSW_PUPD (GPIO_PuPd_NOPULL) #define USRSW_EXTI_PIN (EXTI_PinSource0) #define USRSW_EXTI_PORT (EXTI_PortSourceGPIOA) #define USRSW_EXTI_LINE (EXTI_Line0) #define USRSW_EXTI_IRQN (EXTI0_IRQn) #define USRSW_EXTI_EDGE (EXTI_Trigger_Falling) -#endif +#endif + void switch_init(void) { // make it an input with pull-up GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = USRSW_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; - GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; /* allow external pull up/down */ + GPIO_InitStructure.GPIO_PuPd = USRSW_PUPD; GPIO_Init(USRSW_PORT, &GPIO_InitStructure); // the rest does the EXTI interrupt |