mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_Atmel/TARGET_SAM_CortexM0P/pinmap_function.c@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Parent:
targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/pinmap_function.c@64:41a834223ea3 
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

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 <stddef.h>
mbed_official 15:a81a8d6c1dfe 17
mbed_official 15:a81a8d6c1dfe 18 #include "cmsis.h"
mbed_official 15:a81a8d6c1dfe 19 #include "mbed_assert.h"
mbed_official 15:a81a8d6c1dfe 20 #include "compiler.h"
mbed_official 15:a81a8d6c1dfe 21
mbed_official 15:a81a8d6c1dfe 22 #include "pinmap_function.h"
mbed_official 15:a81a8d6c1dfe 23
mbed_official 15:a81a8d6c1dfe 24 extern struct pwm_pin_channel pwn_pins[];
mbed_official 15:a81a8d6c1dfe 25
mbed_official 15:a81a8d6c1dfe 26 static uint32_t pinmap_merge_pins(uint32_t a, uint32_t b)
mbed_official 15:a81a8d6c1dfe 27 {
mbed_official 15:a81a8d6c1dfe 28 /* both are the same (inc both NC) */
mbed_official 15:a81a8d6c1dfe 29 if (a == b)
mbed_official 15:a81a8d6c1dfe 30 return a;
mbed_official 15:a81a8d6c1dfe 31
mbed_official 15:a81a8d6c1dfe 32 /* one (or both) is not connected */
mbed_official 15:a81a8d6c1dfe 33 if (a == (uint32_t)NC)
mbed_official 15:a81a8d6c1dfe 34 return b;
mbed_official 15:a81a8d6c1dfe 35 if (b == (uint32_t)NC)
mbed_official 15:a81a8d6c1dfe 36 return a;
mbed_official 15:a81a8d6c1dfe 37
mbed_official 15:a81a8d6c1dfe 38 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 39 }
mbed_official 15:a81a8d6c1dfe 40
mbed_official 15:a81a8d6c1dfe 41 /** Find the SERCOM peripheral of given pin
mbed_official 15:a81a8d6c1dfe 42 *
mbed_official 15:a81a8d6c1dfe 43 * Find and return the SERCOM peripheral of input pin, either from default pads, or from extended pads
mbed_official 15:a81a8d6c1dfe 44 * @param[in] pin1 First pin
mbed_official 15:a81a8d6c1dfe 45 * @param[in] pad_select to select which pad is to be used first to find
mbed_official 15:a81a8d6c1dfe 46 * @return SERCOM peripheral if found, else, NC
mbed_official 15:a81a8d6c1dfe 47 */
mbed_official 15:a81a8d6c1dfe 48 uint32_t pinmap_find_peripheral_from_pad(PinName pin, enum sercom_pad_selection pad_select)
mbed_official 15:a81a8d6c1dfe 49 {
mbed_official 64:41a834223ea3 50 uint32_t pin_sercom =(uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 51
mbed_official 64:41a834223ea3 52 if (pin == NC) return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 53
mbed_official 15:a81a8d6c1dfe 54 if (pad_select == SERCOM_USE_EXTENDED_PAD) {
mbed_official 15:a81a8d6c1dfe 55 pin_sercom = pinmap_find_peripheral(pin, PinMap_SERCOM_PADEx);
mbed_official 15:a81a8d6c1dfe 56 }
mbed_official 15:a81a8d6c1dfe 57 if (pin_sercom == (uint32_t)NC) {
mbed_official 15:a81a8d6c1dfe 58 pin_sercom = pinmap_find_peripheral(pin, PinMap_SERCOM_PAD);
mbed_official 15:a81a8d6c1dfe 59 }
mbed_official 15:a81a8d6c1dfe 60
mbed_official 15:a81a8d6c1dfe 61 return pin_sercom;
mbed_official 15:a81a8d6c1dfe 62 }
mbed_official 15:a81a8d6c1dfe 63
mbed_official 15:a81a8d6c1dfe 64 /** Find the common SERCOM shared by two pins
mbed_official 15:a81a8d6c1dfe 65 *
mbed_official 15:a81a8d6c1dfe 66 * Finds the common SERCOM index of two input pins.
mbed_official 15:a81a8d6c1dfe 67 * Currently uses default pad only
mbed_official 15:a81a8d6c1dfe 68 * @param[in] pin1 First pin
mbed_official 15:a81a8d6c1dfe 69 * @param[in] pin2 Second pin
mbed_official 15:a81a8d6c1dfe 70 * @return SERCOM index if found, else, NC
mbed_official 15:a81a8d6c1dfe 71 */
mbed_official 15:a81a8d6c1dfe 72 uint32_t pinmap_merge_sercom(PinName pin1, PinName pin2)
mbed_official 15:a81a8d6c1dfe 73 {
mbed_official 15:a81a8d6c1dfe 74 uint32_t pin1_sercom, pin2_sercom;
mbed_official 15:a81a8d6c1dfe 75
mbed_official 15:a81a8d6c1dfe 76 /* Using default pads for now */
mbed_official 15:a81a8d6c1dfe 77 pin1_sercom = pinmap_find_peripheral_from_pad(pin1, SERCOM_USE_DEFAULT_PAD);
mbed_official 15:a81a8d6c1dfe 78 if (pin1_sercom != (uint32_t)NC) {
mbed_official 15:a81a8d6c1dfe 79 pin1_sercom &= 0x0F;
mbed_official 15:a81a8d6c1dfe 80 }
mbed_official 15:a81a8d6c1dfe 81 pin2_sercom = pinmap_find_peripheral_from_pad(pin2, SERCOM_USE_DEFAULT_PAD);
mbed_official 15:a81a8d6c1dfe 82 if (pin2_sercom != (uint32_t)NC) {
mbed_official 15:a81a8d6c1dfe 83 pin2_sercom &= 0x0F;
mbed_official 15:a81a8d6c1dfe 84 }
mbed_official 15:a81a8d6c1dfe 85
mbed_official 15:a81a8d6c1dfe 86 return pinmap_merge_pins(pin1_sercom, pin2_sercom);
mbed_official 15:a81a8d6c1dfe 87 }
mbed_official 15:a81a8d6c1dfe 88
mbed_official 15:a81a8d6c1dfe 89 /** Find the common SERCOM shared by four pins
mbed_official 15:a81a8d6c1dfe 90 *
mbed_official 15:a81a8d6c1dfe 91 * Finds the common SERCOM index shared by four input pins.
mbed_official 15:a81a8d6c1dfe 92 * @param[in] pin1 First pin
mbed_official 15:a81a8d6c1dfe 93 * @param[in] pin2 Second pin
mbed_official 15:a81a8d6c1dfe 94 * @param[in] pin3 Third pin
mbed_official 15:a81a8d6c1dfe 95 * @param[in] pin4 Fourth pin
mbed_official 15:a81a8d6c1dfe 96 * @return SERCOM index if found, else, NC
mbed_official 15:a81a8d6c1dfe 97 */
mbed_official 15:a81a8d6c1dfe 98 uint32_t pinmap_find_sercom(PinName pin1, PinName pin2, PinName pin3, PinName pin4)
mbed_official 15:a81a8d6c1dfe 99 {
mbed_official 15:a81a8d6c1dfe 100 int i;
mbed_official 15:a81a8d6c1dfe 101 uint32_t sercom_index[4];
mbed_official 64:41a834223ea3 102 uint32_t pin_com = (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 103
mbed_official 15:a81a8d6c1dfe 104 sercom_index[0] = pinmap_find_peripheral_from_pad(pin1, SERCOM_USE_DEFAULT_PAD);
mbed_official 15:a81a8d6c1dfe 105 sercom_index[1] = pinmap_find_peripheral_from_pad(pin2, SERCOM_USE_DEFAULT_PAD);
mbed_official 15:a81a8d6c1dfe 106 sercom_index[2] = pinmap_find_peripheral_from_pad(pin3, SERCOM_USE_DEFAULT_PAD);
mbed_official 15:a81a8d6c1dfe 107 sercom_index[3] = pinmap_find_peripheral_from_pad(pin4, SERCOM_USE_DEFAULT_PAD);
mbed_official 15:a81a8d6c1dfe 108
mbed_official 15:a81a8d6c1dfe 109 /* Find common SERCOM, if there are conflicts, return NC */
mbed_official 15:a81a8d6c1dfe 110 for (i=0; i<4; i++) {
mbed_official 15:a81a8d6c1dfe 111 if (sercom_index[i] != (uint32_t)NC) {
mbed_official 15:a81a8d6c1dfe 112 if (pin_com == (uint32_t)NC) {
mbed_official 15:a81a8d6c1dfe 113 pin_com = sercom_index[i] & 0x0F;
mbed_official 15:a81a8d6c1dfe 114 } else if (pin_com != (sercom_index[i] & 0x0F)) {
mbed_official 64:41a834223ea3 115 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 116 }
mbed_official 15:a81a8d6c1dfe 117 }
mbed_official 15:a81a8d6c1dfe 118 }
mbed_official 15:a81a8d6c1dfe 119
mbed_official 15:a81a8d6c1dfe 120 return pin_com;
mbed_official 15:a81a8d6c1dfe 121 }
mbed_official 15:a81a8d6c1dfe 122
mbed_official 15:a81a8d6c1dfe 123 /** Find the MUX function of input pin specific to given SERCOM index
mbed_official 15:a81a8d6c1dfe 124 *
mbed_official 15:a81a8d6c1dfe 125 * @param[in] pin Pin whose function is to be found out
mbed_official 15:a81a8d6c1dfe 126 * @param[in] sercom_index SERCOM index
mbed_official 15:a81a8d6c1dfe 127 * @return MUX function if found, else, NC
mbed_official 15:a81a8d6c1dfe 128 */
mbed_official 15:a81a8d6c1dfe 129 uint32_t pinmap_function_sercom(PinName pin, uint32_t sercom_index)
mbed_official 15:a81a8d6c1dfe 130 {
mbed_official 64:41a834223ea3 131 uint32_t func = (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 132 uint32_t index;
mbed_official 15:a81a8d6c1dfe 133 sercom_index &= 0x0F;
mbed_official 15:a81a8d6c1dfe 134
mbed_official 15:a81a8d6c1dfe 135 if ((pin == NC) || (sercom_index >= SERCOM_INST_NUM)) {
mbed_official 64:41a834223ea3 136 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 137 }
mbed_official 15:a81a8d6c1dfe 138 index = pinmap_peripheral(pin, PinMap_SERCOM_PAD);
mbed_official 15:a81a8d6c1dfe 139 if ((index & 0x0F) == sercom_index) {
mbed_official 15:a81a8d6c1dfe 140 func = pinmap_function(pin, PinMap_SERCOM_PAD);
mbed_official 15:a81a8d6c1dfe 141 return func;
mbed_official 15:a81a8d6c1dfe 142 }
mbed_official 15:a81a8d6c1dfe 143 index = pinmap_peripheral(pin, PinMap_SERCOM_PADEx);
mbed_official 15:a81a8d6c1dfe 144 if ((index & 0x0F) == sercom_index) {
mbed_official 15:a81a8d6c1dfe 145 func = pinmap_function(pin, PinMap_SERCOM_PADEx);
mbed_official 15:a81a8d6c1dfe 146 return func;
mbed_official 15:a81a8d6c1dfe 147 }
mbed_official 64:41a834223ea3 148 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 149 }
mbed_official 15:a81a8d6c1dfe 150
mbed_official 15:a81a8d6c1dfe 151 /** Find the MUX pad of input pin specific to given SERCOM index
mbed_official 15:a81a8d6c1dfe 152 *
mbed_official 15:a81a8d6c1dfe 153 * @param[in] pin Pin whose function is to be found out
mbed_official 15:a81a8d6c1dfe 154 * @param[in] sercom_index SERCOM index
mbed_official 15:a81a8d6c1dfe 155 * @return MUX pad if found, else, NC
mbed_official 15:a81a8d6c1dfe 156 */
mbed_official 15:a81a8d6c1dfe 157 uint32_t pinmap_pad_sercom(PinName pin, uint32_t sercom_index)
mbed_official 15:a81a8d6c1dfe 158 {
mbed_official 15:a81a8d6c1dfe 159 uint32_t index;
mbed_official 15:a81a8d6c1dfe 160 sercom_index &= 0x0F;
mbed_official 15:a81a8d6c1dfe 161
mbed_official 15:a81a8d6c1dfe 162 if ((pin == NC) || (sercom_index >= SERCOM_INST_NUM)) {
mbed_official 64:41a834223ea3 163 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 164 }
mbed_official 15:a81a8d6c1dfe 165 index = pinmap_peripheral(pin, PinMap_SERCOM_PAD);
mbed_official 15:a81a8d6c1dfe 166 if ((index & 0x0F) == sercom_index) {
mbed_official 15:a81a8d6c1dfe 167 return ((index >> 4) & 0x0F);
mbed_official 15:a81a8d6c1dfe 168 }
mbed_official 15:a81a8d6c1dfe 169 index = pinmap_peripheral(pin, PinMap_SERCOM_PADEx);
mbed_official 15:a81a8d6c1dfe 170 if ((index & 0x0F) == sercom_index) {
mbed_official 15:a81a8d6c1dfe 171 return ((index >> 4) & 0x0F);
mbed_official 15:a81a8d6c1dfe 172 }
mbed_official 64:41a834223ea3 173 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 174 }
mbed_official 15:a81a8d6c1dfe 175
mbed_official 15:a81a8d6c1dfe 176 /** Find the MUX function of input pin specific to given SERCOM index
mbed_official 15:a81a8d6c1dfe 177 *
mbed_official 15:a81a8d6c1dfe 178 * @param[in] pin unused
mbed_official 15:a81a8d6c1dfe 179 * @param[in] sercom_index SERCOM index
mbed_official 15:a81a8d6c1dfe 180 * @return base address to SERCOM if found, else NC
mbed_official 15:a81a8d6c1dfe 181 */
mbed_official 15:a81a8d6c1dfe 182 uint32_t pinmap_peripheral_sercom(PinName pin, uint32_t sercom_index)
mbed_official 15:a81a8d6c1dfe 183 {
mbed_official 15:a81a8d6c1dfe 184 uint32_t sercom_address[6] = {
mbed_official 18:da299f395b9e 185 #if (SAMD21) || (SAMR21)
mbed_official 15:a81a8d6c1dfe 186 0x42000800UL, // Base address of SERCOM0
mbed_official 15:a81a8d6c1dfe 187 0x42000C00UL, // Base address of SERCOM1
mbed_official 15:a81a8d6c1dfe 188 0x42001000UL, // Base address of SERCOM2
mbed_official 15:a81a8d6c1dfe 189 0x42001400UL, // Base address of SERCOM3
mbed_official 15:a81a8d6c1dfe 190 0x42001800UL, // Base address of SERCOM4
mbed_official 15:a81a8d6c1dfe 191 0x42001C00UL // Base address of SERCOM5
mbed_official 18:da299f395b9e 192 #elif (SAML21)
mbed_official 18:da299f395b9e 193 0x42000000UL, // Base address of SERCOM0
mbed_official 18:da299f395b9e 194 0x42000400UL, // Base address of SERCOM1
mbed_official 18:da299f395b9e 195 0x42000800UL, // Base address of SERCOM2
mbed_official 18:da299f395b9e 196 0x42000C00UL, // Base address of SERCOM3
mbed_official 18:da299f395b9e 197 0x42001000UL, // Base address of SERCOM4
mbed_official 18:da299f395b9e 198 0x43000400UL // Base address of SERCOM5
mbed_official 18:da299f395b9e 199 #endif
mbed_official 15:a81a8d6c1dfe 200 };
mbed_official 15:a81a8d6c1dfe 201 uint32_t index = sercom_index & 0x0F;
mbed_official 15:a81a8d6c1dfe 202
mbed_official 15:a81a8d6c1dfe 203 if (index >= SERCOM_INST_NUM) {
mbed_official 64:41a834223ea3 204 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 205 }
mbed_official 15:a81a8d6c1dfe 206 return sercom_address[(sercom_index&0x0F)];
mbed_official 15:a81a8d6c1dfe 207 }
mbed_official 15:a81a8d6c1dfe 208
mbed_official 15:a81a8d6c1dfe 209 /** Find the channel index of a pin specific to a PWM instance
mbed_official 15:a81a8d6c1dfe 210 *
mbed_official 15:a81a8d6c1dfe 211 * @param[in] pin pin name
mbed_official 15:a81a8d6c1dfe 212 * @param[in] pwm pwm peripheral (unused now)
mbed_official 15:a81a8d6c1dfe 213 * @return Channel index of the specified pin
mbed_official 15:a81a8d6c1dfe 214 */
mbed_official 15:a81a8d6c1dfe 215 uint32_t pinmap_channel_pwm(PinName pin, PWMName pwm)
mbed_official 15:a81a8d6c1dfe 216 {
mbed_official 15:a81a8d6c1dfe 217 struct pwm_pin_channel *pwm_ch = pwn_pins;
mbed_official 15:a81a8d6c1dfe 218
mbed_official 15:a81a8d6c1dfe 219 while (pwm_ch->pin != NC) {
mbed_official 15:a81a8d6c1dfe 220 if (pin == pwm_ch->pin) {
mbed_official 15:a81a8d6c1dfe 221 return (uint32_t)pwm_ch->channel_index;
mbed_official 15:a81a8d6c1dfe 222 }
mbed_official 15:a81a8d6c1dfe 223 pwm_ch++;
mbed_official 15:a81a8d6c1dfe 224 }
mbed_official 64:41a834223ea3 225 return (uint32_t)NC;
mbed_official 15:a81a8d6c1dfe 226 }