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targets/TARGET_ONSEMI/TARGET_NCS36510/port_api.c
- Committer:
- <>
- Date:
- 2016-11-08
- Revision:
- 150:02e0a0aed4ec
- Parent:
- 149:156823d33999
File content as of revision 150:02e0a0aed4ec:
/** ****************************************************************************** * @file port_api.c * @brief Implementation of a port API * @internal * @author ON Semiconductor * $Rev: * $Date: ****************************************************************************** * Copyright 2016 Semiconductor Components Industries LLC (d/b/a ON Semiconductor). * All rights reserved. This software and/or documentation is licensed by ON Semiconductor * under limited terms and conditions. The terms and conditions pertaining to the software * and/or documentation are available at http://www.onsemi.com/site/pdf/ONSEMI_T&C.pdf * (ON Semiconductor Standard Terms and Conditions of Sale, Section 8 Software) and * if applicable the software license agreement. Do not use this software and/or * documentation unless you have carefully read and you agree to the limited terms and * conditions. By using this software and/or documentation, you agree to the limited * terms and conditions. * * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. * ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. */ #include "gpio.h" #include "gpio_api.h" #include "port_api.h" #include "pinmap.h" #if DEVICE_PORTIN || DEVICE_PORTOUT /** Get the pin name from the port's pin number * * @param port The port name * @param pin_n The pin number within the specified port * @return The pin name for the port's pin number */ PinName port_pin(PortName port, int pin_n) { return((PinName)(pin_n)); } /** Initilize the port * * @param obj The port object to initialize * @param port The port name * @param mask The bitmask to identify which bits in the port should be included (0 - ignore) * @param dir The port direction */ void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { uint8_t i; PinName pin; /* Store the port mask in obj */ obj->mask = mask; /* Store the port name in obj */ obj->port = port; /* Store GPIO base address */ obj->GPIOMEMBASE = GPIOREG; for (i=0; i<NUMBER_OF_GPIO; i++) { /* check for valid pin */ if (obj->mask & (1<<i)) { /* Gpio numbers start from DIO#0 to #17, so can pass in "i" */ pin = port_pin(obj->port, i); /* Set the pin as GPIO */ gpio_set(pin); } } /* Call function to set pin direction */ port_dir(obj, dir); } /** Set the input port mode * * @param obj The port object * @param mode THe port mode to be set */ void port_mode(port_t *obj, PinMode mode) { uint8_t i = 0; PinName pin; /* For each pin in the mask, set the mode to that defined in "mode" parameter */ for (i=0; i < NUMBER_OF_GPIO; i++) { /* check for valid pin */ if (obj->mask & (1<<i)) { /* get the pin name */ pin = port_pin(obj->port, i); /* Set the mode for the pin */ pin_mode(pin, mode); } } } /** Set port direction (in/out) * * @param obj The port object * @param dir The port direction to be set */ void port_dir(port_t *obj, PinDirection dir) { /* Enable the GPIO clock */ CLOCK_ENABLE(CLOCK_GPIO); if (dir == PIN_INPUT) { obj->GPIOMEMBASE->W_IN = obj->mask; } else if (dir == PIN_OUTPUT) { obj->GPIOMEMBASE->W_OUT = obj->mask; } /* Disable the GPIO clock */ CLOCK_DISABLE(CLOCK_GPIO); } /** Write value to the port * * @param obj The port object * @param value The value to be set */ void port_write(port_t *obj, int value) { /* Enable the GPIO clock */ CLOCK_ENABLE(CLOCK_GPIO); obj->GPIOMEMBASE->R_STATE_W_SET = value;//(obj->mask & value); obj->GPIOMEMBASE->R_IRQ_W_CLEAR = ~value;//(obj->mask ^ value); /* Disable the GPIO clock */ CLOCK_DISABLE(CLOCK_GPIO); } /** Read the current value on the port * * @param obj The port object * @return An integer with each bit corresponding to an associated port pin setting */ int port_read(port_t *obj) { int gpio_level = 0; /* Enable the GPIO clock */ CLOCK_ENABLE(CLOCK_GPIO); gpio_level = obj->GPIOMEMBASE->R_STATE_W_SET; /* Disable the GPIO clock */ CLOCK_DISABLE(CLOCK_GPIO); return(gpio_level); } #endif