Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/port_api.c@15:a81a8d6c1dfe, 2015-11-04 (annotated)

Committer:
mbed_official
Date:
Wed Nov 04 16:30:11 2015 +0000
Revision:
15:a81a8d6c1dfe
Child:
18:da299f395b9e
Synchronized with git revision 46af745ef4405614c3fa49abbd9a706a362ea514



Full URL: https://github.com/mbedmicro/mbed/commit/46af745ef4405614c3fa49abbd9a706a362ea514/



Renamed TARGET_SAM_CortexM0+ to TARGET_SAM_CortexM0P for compatiblity with online compiler

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 15:a81a8d6c1dfe 1 /* mbed Microcontroller Library
mbed_official 15:a81a8d6c1dfe 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 15:a81a8d6c1dfe 3 *
mbed_official 15:a81a8d6c1dfe 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 15:a81a8d6c1dfe 5 * you may not use this file except in compliance with the License.
mbed_official 15:a81a8d6c1dfe 6 * You may obtain a copy of the License at
mbed_official 15:a81a8d6c1dfe 7 *
mbed_official 15:a81a8d6c1dfe 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 15:a81a8d6c1dfe 9 *
mbed_official 15:a81a8d6c1dfe 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 15:a81a8d6c1dfe 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 15:a81a8d6c1dfe 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 15:a81a8d6c1dfe 13 * See the License for the specific language governing permissions and
mbed_official 15:a81a8d6c1dfe 14 * limitations under the License.
mbed_official 15:a81a8d6c1dfe 15 */
mbed_official 15:a81a8d6c1dfe 16 #include "port_api.h"
mbed_official 15:a81a8d6c1dfe 17 #include "pinmap.h"
mbed_official 15:a81a8d6c1dfe 18 #include "gpio_api.h"
mbed_official 15:a81a8d6c1dfe 19 #include "port.h"
mbed_official 15:a81a8d6c1dfe 20
mbed_official 15:a81a8d6c1dfe 21 #if defined(TARGET_SAMR21G18A)
mbed_official 15:a81a8d6c1dfe 22 #define PORTA_MASK 0xDBDFFFF3 // mask for available pins in Port A
mbed_official 15:a81a8d6c1dfe 23 #define PORTB_MASK 0xC0C3C30D // mask for available pins in Port B
mbed_official 15:a81a8d6c1dfe 24 #define PORTC_MASK 0x000D0000 // mask for available pins in Port C
mbed_official 15:a81a8d6c1dfe 25 #elif defined(TARGET_SAMD21J18A)
mbed_official 15:a81a8d6c1dfe 26 #define PORTA_MASK 0xDBFFFFFF // mask for available pins in Port A
mbed_official 15:a81a8d6c1dfe 27 #define PORTB_MASK 0xC0C3FFFF // mask for available pins in Port B
mbed_official 15:a81a8d6c1dfe 28 #elif defined(TARGET_SAMD21G18A)
mbed_official 15:a81a8d6c1dfe 29 #define PORTA_MASK 0xDBFFFFFF // mask for available pins in Port A
mbed_official 15:a81a8d6c1dfe 30 #define PORTB_MASK 0x00C00F0C // mask for available pins in Port B
mbed_official 15:a81a8d6c1dfe 31 #else
mbed_official 15:a81a8d6c1dfe 32 #endif
mbed_official 15:a81a8d6c1dfe 33
mbed_official 15:a81a8d6c1dfe 34 uint32_t start_pin(PortName port)
mbed_official 15:a81a8d6c1dfe 35 {
mbed_official 15:a81a8d6c1dfe 36 if(port < PortMax) { /* PortC value is 2*/
mbed_official 15:a81a8d6c1dfe 37 return port * 32;
mbed_official 15:a81a8d6c1dfe 38 } else {
mbed_official 15:a81a8d6c1dfe 39 return NC;
mbed_official 15:a81a8d6c1dfe 40 }
mbed_official 15:a81a8d6c1dfe 41 }
mbed_official 15:a81a8d6c1dfe 42 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 15:a81a8d6c1dfe 43 {
mbed_official 15:a81a8d6c1dfe 44 MBED_ASSERT(obj);
mbed_official 15:a81a8d6c1dfe 45 struct port_config pin_conf;
mbed_official 15:a81a8d6c1dfe 46 int i, j;
mbed_official 15:a81a8d6c1dfe 47 int start;
mbed_official 15:a81a8d6c1dfe 48
mbed_official 15:a81a8d6c1dfe 49 port_get_config_defaults(&pin_conf);
mbed_official 15:a81a8d6c1dfe 50 switch (dir) {
mbed_official 15:a81a8d6c1dfe 51 case PIN_INPUT :
mbed_official 15:a81a8d6c1dfe 52 pin_conf.direction = PORT_PIN_DIR_INPUT;
mbed_official 15:a81a8d6c1dfe 53 break;
mbed_official 15:a81a8d6c1dfe 54 case PIN_OUTPUT:
mbed_official 15:a81a8d6c1dfe 55 pin_conf.direction = PORT_PIN_DIR_OUTPUT;
mbed_official 15:a81a8d6c1dfe 56 break;
mbed_official 15:a81a8d6c1dfe 57 case PIN_INPUT_OUTPUT:
mbed_official 15:a81a8d6c1dfe 58 pin_conf.direction = PORT_PIN_DIR_OUTPUT_WTH_READBACK;
mbed_official 15:a81a8d6c1dfe 59 break;
mbed_official 15:a81a8d6c1dfe 60 default:
mbed_official 15:a81a8d6c1dfe 61 return;
mbed_official 15:a81a8d6c1dfe 62 }
mbed_official 15:a81a8d6c1dfe 63
mbed_official 15:a81a8d6c1dfe 64 PortGroup *const port_base = (PortGroup*)port_get_group_from_gpio_pin(port * 32); // 32 pins in port // function reused to get the port base
mbed_official 15:a81a8d6c1dfe 65 if(port_base == NULL) return; /* returns NULL if invalid*/
mbed_official 15:a81a8d6c1dfe 66 switch (port) {
mbed_official 15:a81a8d6c1dfe 67 case PortA:
mbed_official 15:a81a8d6c1dfe 68 obj->mask = (uint32_t)mask & PORTA_MASK;
mbed_official 15:a81a8d6c1dfe 69 break;
mbed_official 15:a81a8d6c1dfe 70 case PortB:
mbed_official 15:a81a8d6c1dfe 71 obj->mask = (uint32_t)mask & PORTB_MASK;
mbed_official 15:a81a8d6c1dfe 72 break;
mbed_official 15:a81a8d6c1dfe 73 #if defined(TARGET_SAMR21G18A)
mbed_official 15:a81a8d6c1dfe 74 case PortC:
mbed_official 15:a81a8d6c1dfe 75 obj->mask = (uint32_t)mask & PORTC_MASK;
mbed_official 15:a81a8d6c1dfe 76 break;
mbed_official 15:a81a8d6c1dfe 77 #endif
mbed_official 15:a81a8d6c1dfe 78 default:
mbed_official 15:a81a8d6c1dfe 79 return;
mbed_official 15:a81a8d6c1dfe 80 }
mbed_official 15:a81a8d6c1dfe 81 start = start_pin(port);
mbed_official 15:a81a8d6c1dfe 82 if(start == NC)
mbed_official 15:a81a8d6c1dfe 83 return;
mbed_official 15:a81a8d6c1dfe 84 obj->port = port;
mbed_official 15:a81a8d6c1dfe 85 obj->direction = dir;
mbed_official 15:a81a8d6c1dfe 86 obj->powersave = pin_conf.powersave;
mbed_official 15:a81a8d6c1dfe 87 obj->mode = PORT_PIN_PULL_UP;
mbed_official 15:a81a8d6c1dfe 88
mbed_official 15:a81a8d6c1dfe 89 for (i = start, j = 0; j < 32; i++, j++) {
mbed_official 15:a81a8d6c1dfe 90 if (obj->mask & (1<<j)) {
mbed_official 15:a81a8d6c1dfe 91 port_pin_set_config((PinName)i, &pin_conf);
mbed_official 15:a81a8d6c1dfe 92 }
mbed_official 15:a81a8d6c1dfe 93 }
mbed_official 15:a81a8d6c1dfe 94 obj->OUTCLR = &port_base->OUTCLR.reg;
mbed_official 15:a81a8d6c1dfe 95 obj->OUTSET = &port_base->OUTSET.reg;
mbed_official 15:a81a8d6c1dfe 96 obj->IN = &port_base->IN.reg;
mbed_official 15:a81a8d6c1dfe 97 obj->OUT = &port_base->OUT.reg;
mbed_official 15:a81a8d6c1dfe 98 }
mbed_official 15:a81a8d6c1dfe 99
mbed_official 15:a81a8d6c1dfe 100 void port_mode(port_t *obj, PinMode mode)
mbed_official 15:a81a8d6c1dfe 101 {
mbed_official 15:a81a8d6c1dfe 102 MBED_ASSERT(obj);
mbed_official 15:a81a8d6c1dfe 103 int i, j;
mbed_official 15:a81a8d6c1dfe 104 int start;
mbed_official 15:a81a8d6c1dfe 105 start = start_pin(obj->port);
mbed_official 15:a81a8d6c1dfe 106 if(start == NC)
mbed_official 15:a81a8d6c1dfe 107 return;
mbed_official 15:a81a8d6c1dfe 108 for (i = start, j = 0; j < 32; i++, j++) {
mbed_official 15:a81a8d6c1dfe 109 if (obj->mask & (1<<j)) {
mbed_official 15:a81a8d6c1dfe 110 pin_mode((PinName)i , mode);
mbed_official 15:a81a8d6c1dfe 111 }
mbed_official 15:a81a8d6c1dfe 112 }
mbed_official 15:a81a8d6c1dfe 113 }
mbed_official 15:a81a8d6c1dfe 114
mbed_official 15:a81a8d6c1dfe 115 void port_dir(port_t *obj, PinDirection dir)
mbed_official 15:a81a8d6c1dfe 116 {
mbed_official 15:a81a8d6c1dfe 117 MBED_ASSERT(obj);
mbed_official 15:a81a8d6c1dfe 118 struct port_config pin_conf;
mbed_official 15:a81a8d6c1dfe 119 int i, j;
mbed_official 15:a81a8d6c1dfe 120 int start;
mbed_official 15:a81a8d6c1dfe 121
mbed_official 15:a81a8d6c1dfe 122 switch (dir) {
mbed_official 15:a81a8d6c1dfe 123 case PIN_INPUT :
mbed_official 15:a81a8d6c1dfe 124 pin_conf.direction = PORT_PIN_DIR_INPUT;
mbed_official 15:a81a8d6c1dfe 125 break;
mbed_official 15:a81a8d6c1dfe 126 case PIN_OUTPUT:
mbed_official 15:a81a8d6c1dfe 127 pin_conf.direction = PORT_PIN_DIR_OUTPUT;
mbed_official 15:a81a8d6c1dfe 128 break;
mbed_official 15:a81a8d6c1dfe 129 case PIN_INPUT_OUTPUT:
mbed_official 15:a81a8d6c1dfe 130 pin_conf.direction = PORT_PIN_DIR_OUTPUT_WTH_READBACK;
mbed_official 15:a81a8d6c1dfe 131 break;
mbed_official 15:a81a8d6c1dfe 132 default:
mbed_official 15:a81a8d6c1dfe 133 return;
mbed_official 15:a81a8d6c1dfe 134 }
mbed_official 15:a81a8d6c1dfe 135 start = start_pin(obj->port);
mbed_official 15:a81a8d6c1dfe 136 if(start == NC)
mbed_official 15:a81a8d6c1dfe 137 return;
mbed_official 15:a81a8d6c1dfe 138 obj->direction = dir;
mbed_official 15:a81a8d6c1dfe 139 pin_conf.input_pull = obj->mode;
mbed_official 15:a81a8d6c1dfe 140 pin_conf.powersave = obj->powersave;
mbed_official 15:a81a8d6c1dfe 141
mbed_official 15:a81a8d6c1dfe 142 for (i = start, j = 0; j < 32; i++, j++) {
mbed_official 15:a81a8d6c1dfe 143 if (obj->mask & (1<<j)) {
mbed_official 15:a81a8d6c1dfe 144 port_pin_set_config((PinName)i, &pin_conf);
mbed_official 15:a81a8d6c1dfe 145 }
mbed_official 15:a81a8d6c1dfe 146 }
mbed_official 15:a81a8d6c1dfe 147 }
mbed_official 15:a81a8d6c1dfe 148
mbed_official 15:a81a8d6c1dfe 149 void port_write(port_t *obj, int value)
mbed_official 15:a81a8d6c1dfe 150 {
mbed_official 15:a81a8d6c1dfe 151 MBED_ASSERT(obj);
mbed_official 15:a81a8d6c1dfe 152 int i;
mbed_official 15:a81a8d6c1dfe 153 int start;
mbed_official 15:a81a8d6c1dfe 154 start = start_pin(obj->port);
mbed_official 15:a81a8d6c1dfe 155 if(start == NC)
mbed_official 15:a81a8d6c1dfe 156 return;
mbed_official 15:a81a8d6c1dfe 157 for (i = 0; i < 32 ; i++) {
mbed_official 15:a81a8d6c1dfe 158 if (obj->mask & (1<<i)) {
mbed_official 15:a81a8d6c1dfe 159 if (value & (1<<i)) {
mbed_official 15:a81a8d6c1dfe 160 *obj->OUTSET = 1 << i;
mbed_official 15:a81a8d6c1dfe 161 } else {
mbed_official 15:a81a8d6c1dfe 162 *obj->OUTCLR = 1 << i;
mbed_official 15:a81a8d6c1dfe 163 }
mbed_official 15:a81a8d6c1dfe 164 }
mbed_official 15:a81a8d6c1dfe 165 }
mbed_official 15:a81a8d6c1dfe 166 }
mbed_official 15:a81a8d6c1dfe 167
mbed_official 15:a81a8d6c1dfe 168 int port_read(port_t *obj)
mbed_official 15:a81a8d6c1dfe 169 {
mbed_official 15:a81a8d6c1dfe 170 MBED_ASSERT(obj);
mbed_official 15:a81a8d6c1dfe 171 if (obj->direction == PIN_OUTPUT) {
mbed_official 15:a81a8d6c1dfe 172 return (*obj->OUT & obj->mask);
mbed_official 15:a81a8d6c1dfe 173 } else {
mbed_official 15:a81a8d6c1dfe 174 return (*obj->IN & obj->mask);
mbed_official 15:a81a8d6c1dfe 175 }
mbed_official 15:a81a8d6c1dfe 176 }