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targets/TARGET_ONSEMI/TARGET_NCS36510/port_api.c@165:2dd56e6daeec, 2017-05-23 (annotated)

Committer:
ranaumarnaeem
Date:
Tue May 23 12:54:50 2017 +0000
Revision:
165:2dd56e6daeec
Parent:
150:02e0a0aed4ec 
jhjg

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file port_api.c
<> 144:ef7eb2e8f9f7 4 * @brief Implementation of a port API
<> 144:ef7eb2e8f9f7 5 * @internal
<> 144:ef7eb2e8f9f7 6 * @author ON Semiconductor
<> 144:ef7eb2e8f9f7 7 * $Rev:
<> 144:ef7eb2e8f9f7 8 * $Date:
<> 144:ef7eb2e8f9f7 9 ******************************************************************************
<> 147:30b64687e01f 10 * Copyright 2016 Semiconductor Components Industries LLC (d/b/a “ON Semiconductor”).
<> 147:30b64687e01f 11 * All rights reserved. This software and/or documentation is licensed by ON Semiconductor
<> 147:30b64687e01f 12 * under limited terms and conditions. The terms and conditions pertaining to the software
<> 147:30b64687e01f 13 * and/or documentation are available at http://www.onsemi.com/site/pdf/ONSEMI_T&C.pdf
<> 147:30b64687e01f 14 * (“ON Semiconductor Standard Terms and Conditions of Sale, Section 8 Software”) and
<> 147:30b64687e01f 15 * if applicable the software license agreement. Do not use this software and/or
<> 147:30b64687e01f 16 * documentation unless you have carefully read and you agree to the limited terms and
<> 147:30b64687e01f 17 * conditions. By using this software and/or documentation, you agree to the limited
<> 147:30b64687e01f 18 * terms and conditions.
<> 144:ef7eb2e8f9f7 19 *
<> 144:ef7eb2e8f9f7 20 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
<> 144:ef7eb2e8f9f7 21 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
<> 144:ef7eb2e8f9f7 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
<> 144:ef7eb2e8f9f7 23 * ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL,
<> 144:ef7eb2e8f9f7 24 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
<> 144:ef7eb2e8f9f7 25 */
<> 144:ef7eb2e8f9f7 26 #include "gpio.h"
<> 150:02e0a0aed4ec 27 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 28 #include "port_api.h"
<> 150:02e0a0aed4ec 29 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 #if DEVICE_PORTIN || DEVICE_PORTOUT
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 /** Get the pin name from the port's pin number
<> 144:ef7eb2e8f9f7 34 *
<> 144:ef7eb2e8f9f7 35 * @param port The port name
<> 144:ef7eb2e8f9f7 36 * @param pin_n The pin number within the specified port
<> 144:ef7eb2e8f9f7 37 * @return The pin name for the port's pin number
<> 144:ef7eb2e8f9f7 38 */
<> 144:ef7eb2e8f9f7 39 PinName port_pin(PortName port, int pin_n)
<> 144:ef7eb2e8f9f7 40 {
<> 144:ef7eb2e8f9f7 41 return((PinName)(pin_n));
<> 144:ef7eb2e8f9f7 42 }
<> 144:ef7eb2e8f9f7 43
<> 144:ef7eb2e8f9f7 44 /** Initilize the port
<> 144:ef7eb2e8f9f7 45 *
<> 144:ef7eb2e8f9f7 46 * @param obj The port object to initialize
<> 144:ef7eb2e8f9f7 47 * @param port The port name
<> 144:ef7eb2e8f9f7 48 * @param mask The bitmask to identify which bits in the port should be included (0 - ignore)
<> 144:ef7eb2e8f9f7 49 * @param dir The port direction
<> 144:ef7eb2e8f9f7 50 */
<> 144:ef7eb2e8f9f7 51 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
<> 144:ef7eb2e8f9f7 52 {
<> 144:ef7eb2e8f9f7 53 uint8_t i;
<> 144:ef7eb2e8f9f7 54 PinName pin;
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 /* Store the port mask in obj */
<> 144:ef7eb2e8f9f7 57 obj->mask = mask;
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59 /* Store the port name in obj */
<> 144:ef7eb2e8f9f7 60 obj->port = port;
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 /* Store GPIO base address */
<> 144:ef7eb2e8f9f7 63 obj->GPIOMEMBASE = GPIOREG;
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 for (i=0; i<NUMBER_OF_GPIO; i++) {
<> 144:ef7eb2e8f9f7 66 /* check for valid pin */
<> 144:ef7eb2e8f9f7 67 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 /* Gpio numbers start from DIO#0 to #17, so can pass in "i" */
<> 144:ef7eb2e8f9f7 70 pin = port_pin(obj->port, i);
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 /* Set the pin as GPIO */
<> 144:ef7eb2e8f9f7 73 gpio_set(pin);
<> 144:ef7eb2e8f9f7 74 }
<> 144:ef7eb2e8f9f7 75 }
<> 144:ef7eb2e8f9f7 76
<> 144:ef7eb2e8f9f7 77 /* Call function to set pin direction */
<> 144:ef7eb2e8f9f7 78 port_dir(obj, dir);
<> 144:ef7eb2e8f9f7 79 }
<> 144:ef7eb2e8f9f7 80
<> 144:ef7eb2e8f9f7 81 /** Set the input port mode
<> 144:ef7eb2e8f9f7 82 *
<> 144:ef7eb2e8f9f7 83 * @param obj The port object
<> 144:ef7eb2e8f9f7 84 * @param mode THe port mode to be set
<> 144:ef7eb2e8f9f7 85 */
<> 144:ef7eb2e8f9f7 86 void port_mode(port_t *obj, PinMode mode)
<> 144:ef7eb2e8f9f7 87 {
<> 144:ef7eb2e8f9f7 88 uint8_t i = 0;
<> 144:ef7eb2e8f9f7 89 PinName pin;
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 /* For each pin in the mask, set the mode to that defined in "mode" parameter */
<> 144:ef7eb2e8f9f7 92 for (i=0; i < NUMBER_OF_GPIO; i++) {
<> 144:ef7eb2e8f9f7 93 /* check for valid pin */
<> 144:ef7eb2e8f9f7 94 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 /* get the pin name */
<> 144:ef7eb2e8f9f7 97 pin = port_pin(obj->port, i);
<> 144:ef7eb2e8f9f7 98
<> 144:ef7eb2e8f9f7 99 /* Set the mode for the pin */
<> 144:ef7eb2e8f9f7 100 pin_mode(pin, mode);
<> 144:ef7eb2e8f9f7 101 }
<> 144:ef7eb2e8f9f7 102 }
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 /** Set port direction (in/out)
<> 144:ef7eb2e8f9f7 106 *
<> 144:ef7eb2e8f9f7 107 * @param obj The port object
<> 144:ef7eb2e8f9f7 108 * @param dir The port direction to be set
<> 144:ef7eb2e8f9f7 109 */
<> 144:ef7eb2e8f9f7 110 void port_dir(port_t *obj, PinDirection dir)
<> 144:ef7eb2e8f9f7 111 {
<> 144:ef7eb2e8f9f7 112 /* Enable the GPIO clock */
<> 144:ef7eb2e8f9f7 113 CLOCK_ENABLE(CLOCK_GPIO);
<> 144:ef7eb2e8f9f7 114
<> 144:ef7eb2e8f9f7 115 if (dir == PIN_INPUT) {
<> 144:ef7eb2e8f9f7 116 obj->GPIOMEMBASE->W_IN = obj->mask;
<> 144:ef7eb2e8f9f7 117 } else if (dir == PIN_OUTPUT) {
<> 144:ef7eb2e8f9f7 118 obj->GPIOMEMBASE->W_OUT = obj->mask;
<> 144:ef7eb2e8f9f7 119 }
<> 144:ef7eb2e8f9f7 120
<> 144:ef7eb2e8f9f7 121 /* Disable the GPIO clock */
<> 144:ef7eb2e8f9f7 122 CLOCK_DISABLE(CLOCK_GPIO);
<> 144:ef7eb2e8f9f7 123 }
<> 144:ef7eb2e8f9f7 124
<> 144:ef7eb2e8f9f7 125 /** Write value to the port
<> 144:ef7eb2e8f9f7 126 *
<> 144:ef7eb2e8f9f7 127 * @param obj The port object
<> 144:ef7eb2e8f9f7 128 * @param value The value to be set
<> 144:ef7eb2e8f9f7 129 */
<> 144:ef7eb2e8f9f7 130 void port_write(port_t *obj, int value)
<> 144:ef7eb2e8f9f7 131 {
<> 144:ef7eb2e8f9f7 132 /* Enable the GPIO clock */
<> 144:ef7eb2e8f9f7 133 CLOCK_ENABLE(CLOCK_GPIO);
<> 144:ef7eb2e8f9f7 134
<> 144:ef7eb2e8f9f7 135 obj->GPIOMEMBASE->R_STATE_W_SET = value;//(obj->mask & value);
<> 144:ef7eb2e8f9f7 136 obj->GPIOMEMBASE->R_IRQ_W_CLEAR = ~value;//(obj->mask ^ value);
<> 144:ef7eb2e8f9f7 137
<> 144:ef7eb2e8f9f7 138 /* Disable the GPIO clock */
<> 144:ef7eb2e8f9f7 139 CLOCK_DISABLE(CLOCK_GPIO);
<> 144:ef7eb2e8f9f7 140 }
<> 144:ef7eb2e8f9f7 141
<> 144:ef7eb2e8f9f7 142 /** Read the current value on the port
<> 144:ef7eb2e8f9f7 143 *
<> 144:ef7eb2e8f9f7 144 * @param obj The port object
<> 144:ef7eb2e8f9f7 145 * @return An integer with each bit corresponding to an associated port pin setting
<> 144:ef7eb2e8f9f7 146 */
<> 144:ef7eb2e8f9f7 147 int port_read(port_t *obj)
<> 144:ef7eb2e8f9f7 148 {
<> 144:ef7eb2e8f9f7 149 int gpio_level = 0;
<> 144:ef7eb2e8f9f7 150
<> 144:ef7eb2e8f9f7 151 /* Enable the GPIO clock */
<> 144:ef7eb2e8f9f7 152 CLOCK_ENABLE(CLOCK_GPIO);
<> 144:ef7eb2e8f9f7 153
<> 144:ef7eb2e8f9f7 154 gpio_level = obj->GPIOMEMBASE->R_STATE_W_SET;
<> 144:ef7eb2e8f9f7 155
<> 144:ef7eb2e8f9f7 156 /* Disable the GPIO clock */
<> 144:ef7eb2e8f9f7 157 CLOCK_DISABLE(CLOCK_GPIO);
<> 144:ef7eb2e8f9f7 158
<> 144:ef7eb2e8f9f7 159 return(gpio_level);
<> 144:ef7eb2e8f9f7 160 }
<> 144:ef7eb2e8f9f7 161
<> 144:ef7eb2e8f9f7 162 #endif