diff options
| author | Keith Packard <keithp@keithp.com> | 2013-05-19 20:04:29 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2013-05-19 20:04:29 -0700 |
| commit | 35a05041d3ca3e69a146bd3bf8038c0f1cbc1b42 (patch) | |
| tree | 8877862f68b7139b605711cabbcf37151325e583 /src/stm/ao_exti_stm.c | |
| parent | 098fd43a740ee2a782f82b6b71965b60cdba2d62 (diff) | |
altos: Add EXTI_PIN_NOCONFIGURE to exti interface, use for MS5607
This asks the EXTI code to not mess with the pin configuration so that
the MS5607 driver can get interrupts on the MISO pin while still using
it for SPI.
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 | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/src/stm/ao_exti_stm.c b/src/stm/ao_exti_stm.c index 1361d0d4..c1dcdf85 100644 --- a/src/stm/ao_exti_stm.c +++ b/src/stm/ao_exti_stm.c @@ -70,21 +70,23 @@ ao_exti_setup (struct stm_gpio *gpio, uint8_t pin, uint8_t mode, void (*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)) { - case 0: - default: - pupdr = STM_PUPDR_NONE; - break; - case AO_EXTI_MODE_PULL_UP: - pupdr = STM_PUPDR_PULL_UP; - break; - case AO_EXTI_MODE_PULL_DOWN: - pupdr = STM_PUPDR_PULL_DOWN; - break; + if (!(mode & AO_EXTI_PIN_NOCONFIGURE)) { + /* 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)) { + case 0: + default: + pupdr = STM_PUPDR_NONE; + break; + case AO_EXTI_MODE_PULL_UP: + pupdr = STM_PUPDR_PULL_UP; + break; + case AO_EXTI_MODE_PULL_DOWN: + pupdr = STM_PUPDR_PULL_DOWN; + break; + } + stm_pupdr_set(gpio, pin, pupdr); } - stm_pupdr_set(gpio, pin, pupdr); /* Set interrupt mask and rising/falling mode */ stm_exti.imr &= ~mask; |