diff options
| author | Karl Palsson <karlp@tweak.net.au> | 2022-01-19 23:52:41 +0100 |
|---|---|---|
| committer | Vegard Storheil Eriksen <zyp@jvnv.net> | 2022-01-26 23:40:29 +0100 |
| commit | 5f7df5720d5a43f3c7e1aeea509bcf62e149870a (patch) | |
| tree | 98045a6f9e8d1daeaafede2ffe0f8492d2ba9068 | |
| parent | edfce5a5bfbe14d568ef706c8a8ecc8ca3a6a808 (diff) | |
stm32_gpio: provide port and pin numbers
Accessing Pin.n and Pin.get_portnum() will give you values suitable for
use with EXTI and similar places.
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
| -rw-r--r-- | gpio/stm32_gpio.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/gpio/stm32_gpio.h b/gpio/stm32_gpio.h index 6a428d4..7d47b92 100644 --- a/gpio/stm32_gpio.h +++ b/gpio/stm32_gpio.h @@ -32,10 +32,10 @@ class STM32_GPIO_v1_t : public mmio_ptr<STM32_GPIO_reg_v1_t> { class Pin { private: const STM32_GPIO_v1_t& g; - int n; public: - constexpr Pin(const STM32_GPIO_v1_t& gpio, int pin) : g(gpio), n(pin) {} + const int n; + constexpr Pin(const STM32_GPIO_v1_t& gpio, const int pin) : g(gpio), n(pin) {} enum Mode { Input = 0x4, @@ -76,6 +76,10 @@ class STM32_GPIO_v1_t : public mmio_ptr<STM32_GPIO_reg_v1_t> { void toggle() { set(!(g->ODR & (1 << n))); } + + unsigned get_portnum() { + return (((*(uint32_t*)&g) >>10) & 0xf) - 2; + } }; class PinArray { @@ -121,10 +125,10 @@ class STM32_GPIO_v2_t : public mmio_ptr<STM32_GPIO_reg_v2_t> { class Pin { private: const STM32_GPIO_v2_t& g; - int n; public: - constexpr Pin(const STM32_GPIO_v2_t& gpio, int pin) : g(gpio), n(pin) {} + const int n; + constexpr Pin(const STM32_GPIO_v2_t& gpio, const int pin) : g(gpio), n(pin) {} enum Mode { Input, @@ -202,6 +206,10 @@ class STM32_GPIO_v2_t : public mmio_ptr<STM32_GPIO_reg_v2_t> { void toggle() { set(!(g->ODR & (1 << n))); } + + unsigned get_portnum() { + return (((*(uint32_t*)&g) >>10) & 0xf); + } }; class PinArray { |