diff options
| author | Keith Packard <keithp@keithp.com> | 2017-04-03 11:37:21 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2017-04-03 11:37:21 -0700 |
| commit | 0197157a295d848bac65cf7f4457dd5a99af24e3 (patch) | |
| tree | b165631d389e80f72e2956e2dc283ac218237e23 /src/stm | |
| parent | 89c8e0299504e66fc416a778055958cff467e008 (diff) | |
stm: Add a few more GPIO functions to make dealing with the 1802 easier
ao_gpio_set_mask and ao_gpio_get_all
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm')
| -rw-r--r-- | src/stm/ao_arch_funcs.h | 3 | ||||
| -rw-r--r-- | src/stm/stm32l.h | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h index b294c379..15741505 100644 --- a/src/stm/ao_arch_funcs.h +++ b/src/stm/ao_arch_funcs.h @@ -202,8 +202,11 @@ ao_spi_try_get_mask(struct stm_gpio *reg, uint16_t mask, uint8_t bus, uint32_t s #define ao_gpio_set_bits(port, bits) stm_gpio_set_bits(port, bits) +#define ao_gpio_set_mask(port, bits, mask) stm_gpio_set_mask(port, bits, mask) + #define ao_gpio_clr_bits(port, bits) stm_gpio_clr_bits(port, bits); +#define ao_gpio_get_all(port) stm_gpio_get_all(port) #define ao_enable_output(port,bit,pin,v) do { \ ao_enable_port(port); \ diff --git a/src/stm/stm32l.h b/src/stm/stm32l.h index a20efa8a..4f966e3e 100644 --- a/src/stm/stm32l.h +++ b/src/stm/stm32l.h @@ -168,6 +168,12 @@ stm_gpio_set(struct stm_gpio *gpio, int pin, uint8_t value) { } static inline void +stm_gpio_set_mask(struct stm_gpio *gpio, uint16_t bits, uint16_t mask) { + /* Use the bit set/reset register to do this atomically */ + gpio->bsrr = ((uint32_t) (~bits & mask) << 16) | ((uint32_t) (bits & mask)); +} + +static inline void stm_gpio_set_bits(struct stm_gpio *gpio, uint16_t bits) { gpio->bsrr = bits; } |