diff options
| author | Keith Packard <keithp@keithp.com> | 2012-06-02 16:53:46 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-06-02 16:53:46 -0700 |
| commit | 8d425ffba84ec6f632e8c0d44105de73242a86a9 (patch) | |
| tree | 078232e95317498b78f4d7817b2319ad9568c928 /src/stm/ao_exti_stm.c | |
| parent | 1353b277f8314fbddef81c743bd6ea229364fd18 (diff) | |
altos: Route correct GPIO line to interrupt controller
Which GPIO a particular pin interrupt comes from is selected by the
SYSCFG EXTICR registers; set these when an exti interrupt is configured.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm/ao_exti_stm.c')
| -rw-r--r-- | src/stm/ao_exti_stm.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/stm/ao_exti_stm.c b/src/stm/ao_exti_stm.c index 013d453b..2108e8b5 100644 --- a/src/stm/ao_exti_stm.c +++ b/src/stm/ao_exti_stm.c @@ -51,8 +51,12 @@ ao_exti_setup (struct stm_gpio *gpio, uint8_t pin, uint8_t mode, void (*callback uint32_t mask = 1 << pin; uint32_t pupdr; uint8_t irq; - + ao_exti_callback[pin] = callback; + + /* configure gpio to interrupt routing */ + stm_exticr_set(gpio, pin); + /* configure pin as input, setting selected pull-up/down mode */ stm_moder_set(gpio, pin, STM_MODER_INPUT); switch (mode & (AO_EXTI_MODE_PULL_UP|AO_EXTI_MODE_PULL_DOWN)) { |