Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

targets/TARGET_NUVOTON/TARGET_NUC472/pinmap.c@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 /* mbed Microcontroller Library
elessair 0:f269e3021894 2 * Copyright (c) 2015-2016 Nuvoton
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16
elessair 0:f269e3021894 17 #include "mbed_assert.h"
elessair 0:f269e3021894 18 #include "pinmap.h"
elessair 0:f269e3021894 19 #include "PortNames.h"
elessair 0:f269e3021894 20 #include "mbed_error.h"
elessair 0:f269e3021894 21
elessair 0:f269e3021894 22 /**
elessair 0:f269e3021894 23 * Configure pin multi-function
elessair 0:f269e3021894 24 */
elessair 0:f269e3021894 25 void pin_function(PinName pin, int data)
elessair 0:f269e3021894 26 {
elessair 0:f269e3021894 27 MBED_ASSERT(pin != (PinName)NC);
elessair 0:f269e3021894 28 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
elessair 0:f269e3021894 29 uint32_t port_index = NU_PINNAME_TO_PORT(pin);
elessair 0:f269e3021894 30 __IO uint32_t *GPx_MFPx = ((__IO uint32_t *) &SYS->GPA_MFPL) + port_index * 2 + (pin_index / 8);
elessair 0:f269e3021894 31 //uint32_t MFP_Pos = NU_MFP_POS(pin_index);
elessair 0:f269e3021894 32 uint32_t MFP_Msk = NU_MFP_MSK(pin_index);
elessair 0:f269e3021894 33
elessair 0:f269e3021894 34 // E.g.: SYS->GPA_MFPL = (SYS->GPA_MFPL & (~SYS_GPA_MFPL_PA0MFP_Msk) ) | SYS_GPA_MFPL_PA0MFP_SC0_CD ;
elessair 0:f269e3021894 35 *GPx_MFPx = (*GPx_MFPx & (~MFP_Msk)) | data;
elessair 0:f269e3021894 36
elessair 0:f269e3021894 37 // [TODO] Disconnect JTAG-DP + SW-DP signals.
elessair 0:f269e3021894 38 // Warning: Need to reconnect under reset
elessair 0:f269e3021894 39 //if ((pin == PA_13) || (pin == PA_14)) {
elessair 0:f269e3021894 40 //
elessair 0:f269e3021894 41 //}
elessair 0:f269e3021894 42 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
elessair 0:f269e3021894 43 //
elessair 0:f269e3021894 44 //}
elessair 0:f269e3021894 45 }
elessair 0:f269e3021894 46
elessair 0:f269e3021894 47 /**
elessair 0:f269e3021894 48 * Configure pin pull-up/pull-down
elessair 0:f269e3021894 49 */
elessair 0:f269e3021894 50 void pin_mode(PinName pin, PinMode mode)
elessair 0:f269e3021894 51 {
elessair 0:f269e3021894 52 MBED_ASSERT(pin != (PinName)NC);
elessair 0:f269e3021894 53 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
elessair 0:f269e3021894 54 uint32_t port_index = NU_PINNAME_TO_PORT(pin);
elessair 0:f269e3021894 55 GPIO_T *gpio_base = NU_PORT_BASE(port_index);
elessair 0:f269e3021894 56
elessair 0:f269e3021894 57 uint32_t mode_intern = GPIO_MODE_INPUT;
elessair 0:f269e3021894 58
elessair 0:f269e3021894 59 switch (mode) {
elessair 0:f269e3021894 60 case PullUp:
elessair 0:f269e3021894 61 mode_intern = GPIO_MODE_INPUT;
elessair 0:f269e3021894 62 break;
elessair 0:f269e3021894 63
elessair 0:f269e3021894 64 case PullDown:
elessair 0:f269e3021894 65 case PullNone:
elessair 0:f269e3021894 66 // NOTE: Not support
elessair 0:f269e3021894 67 return;
elessair 0:f269e3021894 68
elessair 0:f269e3021894 69 case PushPull:
elessair 0:f269e3021894 70 mode_intern = GPIO_MODE_OUTPUT;
elessair 0:f269e3021894 71 break;
elessair 0:f269e3021894 72
elessair 0:f269e3021894 73 case OpenDrain:
elessair 0:f269e3021894 74 mode_intern = GPIO_MODE_OPEN_DRAIN;
elessair 0:f269e3021894 75 break;
elessair 0:f269e3021894 76
elessair 0:f269e3021894 77 case Quasi:
elessair 0:f269e3021894 78 mode_intern = GPIO_MODE_QUASI;
elessair 0:f269e3021894 79 break;
elessair 0:f269e3021894 80 }
elessair 0:f269e3021894 81
elessair 0:f269e3021894 82 GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
elessair 0:f269e3021894 83 }