mbed library sources. Supersedes mbed-src.
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targets/hal/TARGET_ONSEMI/TARGET_NCS36510/port_api.c@148:4802eb17e82b, 2016-10-17 (annotated)
- Committer:
- rodriguise
- Date:
- Mon Oct 17 18:47:01 2016 +0000
- Revision:
- 148:4802eb17e82b
- Parent:
- 147:30b64687e01f
backup
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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<> | 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" |
<> | 144:ef7eb2e8f9f7 | 27 | #include "port_api.h" |
<> | 144:ef7eb2e8f9f7 | 28 | |
<> | 144:ef7eb2e8f9f7 | 29 | #if DEVICE_PORTIN || DEVICE_PORTOUT |
<> | 144:ef7eb2e8f9f7 | 30 | |
<> | 144:ef7eb2e8f9f7 | 31 | /** Get the pin name from the port's pin number |
<> | 144:ef7eb2e8f9f7 | 32 | * |
<> | 144:ef7eb2e8f9f7 | 33 | * @param port The port name |
<> | 144:ef7eb2e8f9f7 | 34 | * @param pin_n The pin number within the specified port |
<> | 144:ef7eb2e8f9f7 | 35 | * @return The pin name for the port's pin number |
<> | 144:ef7eb2e8f9f7 | 36 | */ |
<> | 144:ef7eb2e8f9f7 | 37 | PinName port_pin(PortName port, int pin_n) |
<> | 144:ef7eb2e8f9f7 | 38 | { |
<> | 144:ef7eb2e8f9f7 | 39 | return((PinName)(pin_n)); |
<> | 144:ef7eb2e8f9f7 | 40 | } |
<> | 144:ef7eb2e8f9f7 | 41 | |
<> | 144:ef7eb2e8f9f7 | 42 | /** Initilize the port |
<> | 144:ef7eb2e8f9f7 | 43 | * |
<> | 144:ef7eb2e8f9f7 | 44 | * @param obj The port object to initialize |
<> | 144:ef7eb2e8f9f7 | 45 | * @param port The port name |
<> | 144:ef7eb2e8f9f7 | 46 | * @param mask The bitmask to identify which bits in the port should be included (0 - ignore) |
<> | 144:ef7eb2e8f9f7 | 47 | * @param dir The port direction |
<> | 144:ef7eb2e8f9f7 | 48 | */ |
<> | 144:ef7eb2e8f9f7 | 49 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) |
<> | 144:ef7eb2e8f9f7 | 50 | { |
<> | 144:ef7eb2e8f9f7 | 51 | uint8_t i; |
<> | 144:ef7eb2e8f9f7 | 52 | PinName pin; |
<> | 144:ef7eb2e8f9f7 | 53 | |
<> | 144:ef7eb2e8f9f7 | 54 | /* Store the port mask in obj */ |
<> | 144:ef7eb2e8f9f7 | 55 | obj->mask = mask; |
<> | 144:ef7eb2e8f9f7 | 56 | |
<> | 144:ef7eb2e8f9f7 | 57 | /* Store the port name in obj */ |
<> | 144:ef7eb2e8f9f7 | 58 | obj->port = port; |
<> | 144:ef7eb2e8f9f7 | 59 | |
<> | 144:ef7eb2e8f9f7 | 60 | /* Store GPIO base address */ |
<> | 144:ef7eb2e8f9f7 | 61 | obj->GPIOMEMBASE = GPIOREG; |
<> | 144:ef7eb2e8f9f7 | 62 | |
<> | 144:ef7eb2e8f9f7 | 63 | for (i=0; i<NUMBER_OF_GPIO; i++) { |
<> | 144:ef7eb2e8f9f7 | 64 | /* check for valid pin */ |
<> | 144:ef7eb2e8f9f7 | 65 | if (obj->mask & (1<<i)) { |
<> | 144:ef7eb2e8f9f7 | 66 | |
<> | 144:ef7eb2e8f9f7 | 67 | /* Gpio numbers start from DIO#0 to #17, so can pass in "i" */ |
<> | 144:ef7eb2e8f9f7 | 68 | pin = port_pin(obj->port, i); |
<> | 144:ef7eb2e8f9f7 | 69 | |
<> | 144:ef7eb2e8f9f7 | 70 | /* Set the pin as GPIO */ |
<> | 144:ef7eb2e8f9f7 | 71 | gpio_set(pin); |
<> | 144:ef7eb2e8f9f7 | 72 | } |
<> | 144:ef7eb2e8f9f7 | 73 | } |
<> | 144:ef7eb2e8f9f7 | 74 | |
<> | 144:ef7eb2e8f9f7 | 75 | /* Call function to set pin direction */ |
<> | 144:ef7eb2e8f9f7 | 76 | port_dir(obj, dir); |
<> | 144:ef7eb2e8f9f7 | 77 | } |
<> | 144:ef7eb2e8f9f7 | 78 | |
<> | 144:ef7eb2e8f9f7 | 79 | /** Set the input port mode |
<> | 144:ef7eb2e8f9f7 | 80 | * |
<> | 144:ef7eb2e8f9f7 | 81 | * @param obj The port object |
<> | 144:ef7eb2e8f9f7 | 82 | * @param mode THe port mode to be set |
<> | 144:ef7eb2e8f9f7 | 83 | */ |
<> | 144:ef7eb2e8f9f7 | 84 | void port_mode(port_t *obj, PinMode mode) |
<> | 144:ef7eb2e8f9f7 | 85 | { |
<> | 144:ef7eb2e8f9f7 | 86 | uint8_t i = 0; |
<> | 144:ef7eb2e8f9f7 | 87 | PinName pin; |
<> | 144:ef7eb2e8f9f7 | 88 | |
<> | 144:ef7eb2e8f9f7 | 89 | /* For each pin in the mask, set the mode to that defined in "mode" parameter */ |
<> | 144:ef7eb2e8f9f7 | 90 | for (i=0; i < NUMBER_OF_GPIO; i++) { |
<> | 144:ef7eb2e8f9f7 | 91 | /* check for valid pin */ |
<> | 144:ef7eb2e8f9f7 | 92 | if (obj->mask & (1<<i)) { |
<> | 144:ef7eb2e8f9f7 | 93 | |
<> | 144:ef7eb2e8f9f7 | 94 | /* get the pin name */ |
<> | 144:ef7eb2e8f9f7 | 95 | pin = port_pin(obj->port, i); |
<> | 144:ef7eb2e8f9f7 | 96 | |
<> | 144:ef7eb2e8f9f7 | 97 | /* Set the mode for the pin */ |
<> | 144:ef7eb2e8f9f7 | 98 | pin_mode(pin, mode); |
<> | 144:ef7eb2e8f9f7 | 99 | } |
<> | 144:ef7eb2e8f9f7 | 100 | } |
<> | 144:ef7eb2e8f9f7 | 101 | } |
<> | 144:ef7eb2e8f9f7 | 102 | |
<> | 144:ef7eb2e8f9f7 | 103 | /** Set port direction (in/out) |
<> | 144:ef7eb2e8f9f7 | 104 | * |
<> | 144:ef7eb2e8f9f7 | 105 | * @param obj The port object |
<> | 144:ef7eb2e8f9f7 | 106 | * @param dir The port direction to be set |
<> | 144:ef7eb2e8f9f7 | 107 | */ |
<> | 144:ef7eb2e8f9f7 | 108 | void port_dir(port_t *obj, PinDirection dir) |
<> | 144:ef7eb2e8f9f7 | 109 | { |
<> | 144:ef7eb2e8f9f7 | 110 | /* Enable the GPIO clock */ |
<> | 144:ef7eb2e8f9f7 | 111 | CLOCK_ENABLE(CLOCK_GPIO); |
<> | 144:ef7eb2e8f9f7 | 112 | |
<> | 144:ef7eb2e8f9f7 | 113 | if (dir == PIN_INPUT) { |
<> | 144:ef7eb2e8f9f7 | 114 | obj->GPIOMEMBASE->W_IN = obj->mask; |
<> | 144:ef7eb2e8f9f7 | 115 | } else if (dir == PIN_OUTPUT) { |
<> | 144:ef7eb2e8f9f7 | 116 | obj->GPIOMEMBASE->W_OUT = obj->mask; |
<> | 144:ef7eb2e8f9f7 | 117 | } |
<> | 144:ef7eb2e8f9f7 | 118 | |
<> | 144:ef7eb2e8f9f7 | 119 | /* Disable the GPIO clock */ |
<> | 144:ef7eb2e8f9f7 | 120 | CLOCK_DISABLE(CLOCK_GPIO); |
<> | 144:ef7eb2e8f9f7 | 121 | } |
<> | 144:ef7eb2e8f9f7 | 122 | |
<> | 144:ef7eb2e8f9f7 | 123 | /** Write value to the port |
<> | 144:ef7eb2e8f9f7 | 124 | * |
<> | 144:ef7eb2e8f9f7 | 125 | * @param obj The port object |
<> | 144:ef7eb2e8f9f7 | 126 | * @param value The value to be set |
<> | 144:ef7eb2e8f9f7 | 127 | */ |
<> | 144:ef7eb2e8f9f7 | 128 | void port_write(port_t *obj, int value) |
<> | 144:ef7eb2e8f9f7 | 129 | { |
<> | 144:ef7eb2e8f9f7 | 130 | /* Enable the GPIO clock */ |
<> | 144:ef7eb2e8f9f7 | 131 | CLOCK_ENABLE(CLOCK_GPIO); |
<> | 144:ef7eb2e8f9f7 | 132 | |
<> | 144:ef7eb2e8f9f7 | 133 | obj->GPIOMEMBASE->R_STATE_W_SET = value;//(obj->mask & value); |
<> | 144:ef7eb2e8f9f7 | 134 | obj->GPIOMEMBASE->R_IRQ_W_CLEAR = ~value;//(obj->mask ^ value); |
<> | 144:ef7eb2e8f9f7 | 135 | |
<> | 144:ef7eb2e8f9f7 | 136 | /* Disable the GPIO clock */ |
<> | 144:ef7eb2e8f9f7 | 137 | CLOCK_DISABLE(CLOCK_GPIO); |
<> | 144:ef7eb2e8f9f7 | 138 | } |
<> | 144:ef7eb2e8f9f7 | 139 | |
<> | 144:ef7eb2e8f9f7 | 140 | /** Read the current value on the port |
<> | 144:ef7eb2e8f9f7 | 141 | * |
<> | 144:ef7eb2e8f9f7 | 142 | * @param obj The port object |
<> | 144:ef7eb2e8f9f7 | 143 | * @return An integer with each bit corresponding to an associated port pin setting |
<> | 144:ef7eb2e8f9f7 | 144 | */ |
<> | 144:ef7eb2e8f9f7 | 145 | int port_read(port_t *obj) |
<> | 144:ef7eb2e8f9f7 | 146 | { |
<> | 144:ef7eb2e8f9f7 | 147 | int gpio_level = 0; |
<> | 144:ef7eb2e8f9f7 | 148 | |
<> | 144:ef7eb2e8f9f7 | 149 | /* Enable the GPIO clock */ |
<> | 144:ef7eb2e8f9f7 | 150 | CLOCK_ENABLE(CLOCK_GPIO); |
<> | 144:ef7eb2e8f9f7 | 151 | |
<> | 144:ef7eb2e8f9f7 | 152 | gpio_level = obj->GPIOMEMBASE->R_STATE_W_SET; |
<> | 144:ef7eb2e8f9f7 | 153 | |
<> | 144:ef7eb2e8f9f7 | 154 | /* Disable the GPIO clock */ |
<> | 144:ef7eb2e8f9f7 | 155 | CLOCK_DISABLE(CLOCK_GPIO); |
<> | 144:ef7eb2e8f9f7 | 156 | |
<> | 144:ef7eb2e8f9f7 | 157 | return(gpio_level); |
<> | 144:ef7eb2e8f9f7 | 158 | } |
<> | 144:ef7eb2e8f9f7 | 159 | |
<> | 144:ef7eb2e8f9f7 | 160 | #endif |