mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
Diff: targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c
- Revision:
- 227:7bd0639b8911
- Parent:
- 113:65a335a675de
diff -r b062af740e40 -r 7bd0639b8911 targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c --- a/targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c Wed Jun 11 09:45:09 2014 +0100 +++ b/targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c Wed Jun 11 16:00:09 2014 +0100 @@ -13,21 +13,23 @@ * See the License for the specific language governing permissions and * limitations under the License. */ +#include "mbed_assert.h" #include "gpio_api.h" #include "pinmap.h" uint32_t gpio_set(PinName pin) { + MBED_ASSERT(pin != (PinName)NC); pin_function(pin, 0); return (1 << ((int)pin & 0x1F)); } void gpio_init(gpio_t *obj, PinName pin) { - if(pin == NC) return; - obj->pin = pin; + if (pin == (PinName)NC) + return; + obj->mask = gpio_set(pin); - - LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)pin & ~0x1F); + LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)((int)pin & ~0x1F); obj->reg_set = &port_reg->FIOSET; obj->reg_clr = &port_reg->FIOCLR; obj->reg_in = &port_reg->FIOPIN; @@ -39,8 +41,13 @@ } void gpio_dir(gpio_t *obj, PinDirection direction) { + MBED_ASSERT(obj->pin != (PinName)NC); switch (direction) { - case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break; - case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; + case PIN_INPUT : + *obj->reg_dir &= ~obj->mask; + break; + case PIN_OUTPUT: + *obj->reg_dir |= obj->mask; + break; } }