diff options
Diffstat (limited to 'drivers/src/fsl_gpio.c')
| -rw-r--r-- | drivers/src/fsl_gpio.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/drivers/src/fsl_gpio.c b/drivers/src/fsl_gpio.c new file mode 100644 index 0000000..b40ee3a --- /dev/null +++ b/drivers/src/fsl_gpio.c @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * Copyright 2016-2017 NXP + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * o Redistributions of source code must retain the above copyright notice, this list + * of conditions and the following disclaimer. + * + * o Redistributions in binary form must reproduce the above copyright notice, this + * list of conditions and the following disclaimer in the documentation and/or + * other materials provided with the distribution. + * + * o Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "fsl_gpio.h" + +/******************************************************************************* + * Variables + ******************************************************************************/ +static PORT_Type *const s_portBases[] = PORT_BASE_PTRS; +static GPIO_Type *const s_gpioBases[] = GPIO_BASE_PTRS; + +/******************************************************************************* +* Prototypes +******************************************************************************/ + +/*! +* @brief Gets the GPIO instance according to the GPIO base +* +* @param base GPIO peripheral base pointer(PTA, PTB, PTC, etc.) +* @retval GPIO instance +*/ +static uint32_t GPIO_GetInstance(GPIO_Type *base); + +/******************************************************************************* + * Code + ******************************************************************************/ + +static uint32_t GPIO_GetInstance(GPIO_Type *base) +{ + uint32_t instance; + + /* Find the instance index from base address mappings. */ + for (instance = 0; instance < ARRAY_SIZE(s_gpioBases); instance++) + { + if (s_gpioBases[instance] == base) + { + break; + } + } + + assert(instance < ARRAY_SIZE(s_gpioBases)); + + return instance; +} + +void GPIO_PinInit(GPIO_Type *base, uint32_t pin, const gpio_pin_config_t *config) +{ + assert(config); + + if (config->pinDirection == kGPIO_DigitalInput) + { + base->PDDR &= ~(1U << pin); + } + else + { + GPIO_WritePinOutput(base, pin, config->outputLogic); + base->PDDR |= (1U << pin); + } +} + +uint32_t GPIO_GetPinsInterruptFlags(GPIO_Type *base) +{ + uint8_t instance; + PORT_Type *portBase; + instance = GPIO_GetInstance(base); + portBase = s_portBases[instance]; + return portBase->ISFR; +} + +void GPIO_ClearPinsInterruptFlags(GPIO_Type *base, uint32_t mask) +{ + uint8_t instance; + PORT_Type *portBase; + instance = GPIO_GetInstance(base); + portBase = s_portBases[instance]; + portBase->ISFR = mask; +} + +#if defined(FSL_FEATURE_GPIO_HAS_ATTRIBUTE_CHECKER) && FSL_FEATURE_GPIO_HAS_ATTRIBUTE_CHECKER +void GPIO_CheckAttributeBytes(GPIO_Type *base, gpio_checker_attribute_t attribute) +{ + base->GACR = ((uint32_t)attribute << GPIO_GACR_ACB0_SHIFT) | ((uint32_t)attribute << GPIO_GACR_ACB1_SHIFT) | + ((uint32_t)attribute << GPIO_GACR_ACB2_SHIFT) | ((uint32_t)attribute << GPIO_GACR_ACB3_SHIFT); +} +#endif + +#if defined(FSL_FEATURE_SOC_FGPIO_COUNT) && FSL_FEATURE_SOC_FGPIO_COUNT + +/******************************************************************************* + * Variables + ******************************************************************************/ +static FGPIO_Type *const s_fgpioBases[] = FGPIO_BASE_PTRS; + +/******************************************************************************* +* Prototypes +******************************************************************************/ +/*! +* @brief Gets the FGPIO instance according to the GPIO base +* +* @param base FGPIO peripheral base pointer(PTA, PTB, PTC, etc.) +* @retval FGPIO instance +*/ +static uint32_t FGPIO_GetInstance(FGPIO_Type *base); + +/******************************************************************************* + * Code + ******************************************************************************/ + +static uint32_t FGPIO_GetInstance(FGPIO_Type *base) +{ + uint32_t instance; + + /* Find the instance index from base address mappings. */ + for (instance = 0; instance < ARRAY_SIZE(s_fgpioBases); instance++) + { + if (s_fgpioBases[instance] == base) + { + break; + } + } + + assert(instance < ARRAY_SIZE(s_fgpioBases)); + + return instance; +} + +void FGPIO_PinInit(FGPIO_Type *base, uint32_t pin, const gpio_pin_config_t *config) +{ + assert(config); + + if (config->pinDirection == kGPIO_DigitalInput) + { + base->PDDR &= ~(1U << pin); + } + else + { + FGPIO_WritePinOutput(base, pin, config->outputLogic); + base->PDDR |= (1U << pin); + } +} + +uint32_t FGPIO_GetPinsInterruptFlags(FGPIO_Type *base) +{ + uint8_t instance; + instance = FGPIO_GetInstance(base); + PORT_Type *portBase; + portBase = s_portBases[instance]; + return portBase->ISFR; +} + +void FGPIO_ClearPinsInterruptFlags(FGPIO_Type *base, uint32_t mask) +{ + uint8_t instance; + instance = FGPIO_GetInstance(base); + PORT_Type *portBase; + portBase = s_portBases[instance]; + portBase->ISFR = mask; +} + +#if defined(FSL_FEATURE_FGPIO_HAS_ATTRIBUTE_CHECKER) && FSL_FEATURE_FGPIO_HAS_ATTRIBUTE_CHECKER +void FGPIO_CheckAttributeBytes(FGPIO_Type *base, gpio_checker_attribute_t attribute) +{ + base->GACR = (attribute << FGPIO_GACR_ACB0_SHIFT) | (attribute << FGPIO_GACR_ACB1_SHIFT) | + (attribute << FGPIO_GACR_ACB2_SHIFT) | (attribute << FGPIO_GACR_ACB3_SHIFT); +} +#endif + +#endif /* FSL_FEATURE_SOC_FGPIO_COUNT */ |