Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c@50:a417edff4437, 2016-01-15 (annotated)

Committer:
mbed_official
Date:
Fri Jan 15 07:45:16 2016 +0000
Revision:
50:a417edff4437
Parent:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Synchronized with git revision 6010f32619bfcbb01cc73747d4ff9040863482d9



Full URL: https://github.com/mbedmicro/mbed/commit/6010f32619bfcbb01cc73747d4ff9040863482d9/



Remove doubling of buffer size in realiseEndpoint()

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /***************************************************************************//**
bogdanm 0:9b334a45a8ff 2 * @file gpio_api.c
bogdanm 0:9b334a45a8ff 3 *******************************************************************************
bogdanm 0:9b334a45a8ff 4 * @section License
bogdanm 0:9b334a45a8ff 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
bogdanm 0:9b334a45a8ff 6 *******************************************************************************
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * Permission is granted to anyone to use this software for any purpose,
bogdanm 0:9b334a45a8ff 9 * including commercial applications, and to alter it and redistribute it
bogdanm 0:9b334a45a8ff 10 * freely, subject to the following restrictions:
bogdanm 0:9b334a45a8ff 11 *
bogdanm 0:9b334a45a8ff 12 * 1. The origin of this software must not be misrepresented; you must not
bogdanm 0:9b334a45a8ff 13 * claim that you wrote the original software.
bogdanm 0:9b334a45a8ff 14 * 2. Altered source versions must be plainly marked as such, and must not be
bogdanm 0:9b334a45a8ff 15 * misrepresented as being the original software.
bogdanm 0:9b334a45a8ff 16 * 3. This notice may not be removed or altered from any source distribution.
bogdanm 0:9b334a45a8ff 17 *
bogdanm 0:9b334a45a8ff 18 * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
bogdanm 0:9b334a45a8ff 19 * obligation to support this Software. Silicon Labs is providing the
bogdanm 0:9b334a45a8ff 20 * Software "AS IS", with no express or implied warranties of any kind,
bogdanm 0:9b334a45a8ff 21 * including, but not limited to, any implied warranties of merchantability
bogdanm 0:9b334a45a8ff 22 * or fitness for any particular purpose or warranties against infringement
bogdanm 0:9b334a45a8ff 23 * of any proprietary rights of a third party.
bogdanm 0:9b334a45a8ff 24 *
bogdanm 0:9b334a45a8ff 25 * Silicon Labs will not be liable for any consequential, incidental, or
bogdanm 0:9b334a45a8ff 26 * special damages, or any other relief, or for any claim by any third party,
bogdanm 0:9b334a45a8ff 27 * arising from your use of this Software.
bogdanm 0:9b334a45a8ff 28 *
bogdanm 0:9b334a45a8ff 29 ******************************************************************************/
bogdanm 0:9b334a45a8ff 30
bogdanm 0:9b334a45a8ff 31 #include "gpio_api.h"
bogdanm 0:9b334a45a8ff 32 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 33 #include "em_cmu.h"
bogdanm 0:9b334a45a8ff 34 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 35 #include "sleepmodes.h"
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 void gpio_write(gpio_t *obj, int value)
bogdanm 0:9b334a45a8ff 39 {
bogdanm 0:9b334a45a8ff 40 if (value) {
bogdanm 0:9b334a45a8ff 41 GPIO_PinOutSet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF); // Pin number encoded in first four bits of obj->pin
bogdanm 0:9b334a45a8ff 42 } else {
bogdanm 0:9b334a45a8ff 43 GPIO_PinOutClear((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF);
bogdanm 0:9b334a45a8ff 44 }
bogdanm 0:9b334a45a8ff 45 }
bogdanm 0:9b334a45a8ff 46
bogdanm 0:9b334a45a8ff 47 int gpio_read(gpio_t *obj)
bogdanm 0:9b334a45a8ff 48 {
bogdanm 0:9b334a45a8ff 49 if (obj->dir == PIN_INPUT) {
bogdanm 0:9b334a45a8ff 50 return GPIO_PinInGet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF); // Pin number encoded in first four bits of obj->pin
bogdanm 0:9b334a45a8ff 51 } else {
bogdanm 0:9b334a45a8ff 52 return GPIO_PinOutGet((GPIO_Port_TypeDef)(obj->pin >> 4 & 0xF), obj->pin & 0xF);
bogdanm 0:9b334a45a8ff 53 }
bogdanm 0:9b334a45a8ff 54 }
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 int gpio_is_connected(const gpio_t *obj)
bogdanm 0:9b334a45a8ff 57 {
mbed_official 50:a417edff4437 58 return ((uint32_t)obj->pin | 0xFFFFFF00 ) != (uint32_t)((PinName)NC);
bogdanm 0:9b334a45a8ff 59 }
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 /*
bogdanm 0:9b334a45a8ff 62 * @return the GPIO port mask for this pin
bogdanm 0:9b334a45a8ff 63 * Pin and port index encoded in one uint32.
bogdanm 0:9b334a45a8ff 64 * First four bits represent the pin number
bogdanm 0:9b334a45a8ff 65 * The remaining bits represent the pin mode
bogdanm 0:9b334a45a8ff 66 */
bogdanm 0:9b334a45a8ff 67 uint32_t gpio_set(PinName pin)
bogdanm 0:9b334a45a8ff 68 {
bogdanm 0:9b334a45a8ff 69 return 1 << ((uint32_t) pin & 0xF);
bogdanm 0:9b334a45a8ff 70 }
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 void gpio_init(gpio_t *obj, PinName pin)
bogdanm 0:9b334a45a8ff 73 {
bogdanm 0:9b334a45a8ff 74 MBED_ASSERT(pin != NC);
bogdanm 0:9b334a45a8ff 75
bogdanm 0:9b334a45a8ff 76 CMU_ClockEnable(cmuClock_HFPER, true);
bogdanm 0:9b334a45a8ff 77 CMU_ClockEnable(cmuClock_GPIO, true);
bogdanm 0:9b334a45a8ff 78 obj->pin = pin;
bogdanm 0:9b334a45a8ff 79 }
bogdanm 0:9b334a45a8ff 80
bogdanm 0:9b334a45a8ff 81 void gpio_mode(gpio_t *obj, PinMode mode)
bogdanm 0:9b334a45a8ff 82 {
mbed_official 50:a417edff4437 83 uint32_t pin = 1 << (obj->pin & 0xF);
mbed_official 50:a417edff4437 84 uint32_t port = (obj->pin >> 4) & 0xF;
mbed_official 50:a417edff4437 85
mbed_official 50:a417edff4437 86 if(obj->dir == PIN_INPUT) {
bogdanm 0:9b334a45a8ff 87 switch(mode) {
bogdanm 0:9b334a45a8ff 88 case PullDefault:
bogdanm 0:9b334a45a8ff 89 mode = Input;
bogdanm 0:9b334a45a8ff 90 break;
bogdanm 0:9b334a45a8ff 91 case PullUp:
bogdanm 0:9b334a45a8ff 92 mode = InputPullUp;
bogdanm 0:9b334a45a8ff 93 break;
bogdanm 0:9b334a45a8ff 94 case PullDown:
bogdanm 0:9b334a45a8ff 95 mode = InputPullDown;
bogdanm 0:9b334a45a8ff 96 break;
bogdanm 0:9b334a45a8ff 97 default:
bogdanm 0:9b334a45a8ff 98 break;
bogdanm 0:9b334a45a8ff 99 }
mbed_official 50:a417edff4437 100
bogdanm 0:9b334a45a8ff 101 //Handle DOUT setting
bogdanm 0:9b334a45a8ff 102 if((mode & 0x10) != 0) {
bogdanm 0:9b334a45a8ff 103 //Set DOUT
mbed_official 50:a417edff4437 104 #ifdef _GPIO_P_DOUTSET_MASK
mbed_official 50:a417edff4437 105 GPIO->P[port].DOUTSET = pin;
mbed_official 50:a417edff4437 106 #else
mbed_official 50:a417edff4437 107 GPIO->P[port].DOUT |= pin;
mbed_official 50:a417edff4437 108 #endif
bogdanm 0:9b334a45a8ff 109 } else {
bogdanm 0:9b334a45a8ff 110 //Clear DOUT
mbed_official 50:a417edff4437 111 #ifdef _GPIO_P_DOUTCLR_MASK
mbed_official 50:a417edff4437 112 GPIO->P[port].DOUTCLR = pin;
mbed_official 50:a417edff4437 113 #else
mbed_official 50:a417edff4437 114 GPIO->P[port].DOUT &= ~pin;
mbed_official 50:a417edff4437 115 #endif
bogdanm 0:9b334a45a8ff 116 }
bogdanm 0:9b334a45a8ff 117 } else {
bogdanm 0:9b334a45a8ff 118 switch(mode) {
bogdanm 0:9b334a45a8ff 119 case PullDefault:
bogdanm 0:9b334a45a8ff 120 mode = PushPull;
bogdanm 0:9b334a45a8ff 121 break;
bogdanm 0:9b334a45a8ff 122 case PullUp:
bogdanm 0:9b334a45a8ff 123 mode = WiredAndPullUp;
bogdanm 0:9b334a45a8ff 124 break;
bogdanm 0:9b334a45a8ff 125 case PullDown:
bogdanm 0:9b334a45a8ff 126 mode = WiredOrPullDown;
bogdanm 0:9b334a45a8ff 127 break;
bogdanm 0:9b334a45a8ff 128 default:
bogdanm 0:9b334a45a8ff 129 break;
bogdanm 0:9b334a45a8ff 130 }
bogdanm 0:9b334a45a8ff 131 }
mbed_official 50:a417edff4437 132
bogdanm 0:9b334a45a8ff 133 obj->mode = mode; // Update object
bogdanm 0:9b334a45a8ff 134 pin_mode(obj->pin, mode); // Update register
bogdanm 0:9b334a45a8ff 135 }
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 // Used by DigitalInOut to set correct mode when direction is set
bogdanm 0:9b334a45a8ff 138 void gpio_dir(gpio_t *obj, PinDirection direction)
bogdanm 0:9b334a45a8ff 139 {
bogdanm 0:9b334a45a8ff 140 obj->dir = direction;
bogdanm 0:9b334a45a8ff 141 switch (direction) {
bogdanm 0:9b334a45a8ff 142 case PIN_INPUT:
bogdanm 0:9b334a45a8ff 143 gpio_mode(obj, PullDefault);
bogdanm 0:9b334a45a8ff 144 break;
bogdanm 0:9b334a45a8ff 145 case PIN_OUTPUT:
bogdanm 0:9b334a45a8ff 146 gpio_mode(obj, PullNone);
bogdanm 0:9b334a45a8ff 147 break;
bogdanm 0:9b334a45a8ff 148 }
bogdanm 0:9b334a45a8ff 149 }