mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

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

targets/TARGET_NUVOTON/TARGET_NANO100/pinmap.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
188:bcfe06ba3d64 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 174:b96e65c34a4d 1 /* mbed Microcontroller Library
AnnaBridge 174:b96e65c34a4d 2 * Copyright (c) 2015-2017 Nuvoton
AnnaBridge 174:b96e65c34a4d 3 *
AnnaBridge 174:b96e65c34a4d 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 174:b96e65c34a4d 5 * you may not use this file except in compliance with the License.
AnnaBridge 174:b96e65c34a4d 6 * You may obtain a copy of the License at
AnnaBridge 174:b96e65c34a4d 7 *
AnnaBridge 174:b96e65c34a4d 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 174:b96e65c34a4d 9 *
AnnaBridge 174:b96e65c34a4d 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 174:b96e65c34a4d 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 174:b96e65c34a4d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 174:b96e65c34a4d 13 * See the License for the specific language governing permissions and
AnnaBridge 174:b96e65c34a4d 14 * limitations under the License.
AnnaBridge 174:b96e65c34a4d 15 */
AnnaBridge 174:b96e65c34a4d 16
AnnaBridge 174:b96e65c34a4d 17 #include "mbed_assert.h"
AnnaBridge 174:b96e65c34a4d 18 #include "pinmap.h"
AnnaBridge 174:b96e65c34a4d 19 #include "PortNames.h"
AnnaBridge 174:b96e65c34a4d 20 #include "mbed_error.h"
AnnaBridge 174:b96e65c34a4d 21
AnnaBridge 174:b96e65c34a4d 22 /**
AnnaBridge 174:b96e65c34a4d 23 * Configure pin multi-function
AnnaBridge 174:b96e65c34a4d 24 */
AnnaBridge 174:b96e65c34a4d 25 void pin_function(PinName pin, int data)
AnnaBridge 174:b96e65c34a4d 26 {
AnnaBridge 174:b96e65c34a4d 27 MBED_ASSERT(pin != (PinName)NC);
AnnaBridge 174:b96e65c34a4d 28 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
AnnaBridge 174:b96e65c34a4d 29 uint32_t port_index = NU_PINNAME_TO_PORT(pin);
AnnaBridge 174:b96e65c34a4d 30 __IO uint32_t *Px_x_MFP = ((__IO uint32_t *) &SYS->PA_L_MFP) + port_index * 2 + (pin_index / 8);
AnnaBridge 174:b96e65c34a4d 31 uint32_t MFP_Msk = NU_MFP_MSK(pin_index);
AnnaBridge 174:b96e65c34a4d 32
AnnaBridge 174:b96e65c34a4d 33 // E.g.: SYS->PA_L_MFP = (SYS->PA_L_MFP & (~SYS_PA_L_MFP_PA0_MFP_Msk) ) | SYS_PA_L_MFP_PA0_MFP_SC0_CD ;
AnnaBridge 174:b96e65c34a4d 34 *Px_x_MFP = (*Px_x_MFP & (~MFP_Msk)) | data;
AnnaBridge 174:b96e65c34a4d 35 }
AnnaBridge 174:b96e65c34a4d 36
AnnaBridge 174:b96e65c34a4d 37 /**
AnnaBridge 174:b96e65c34a4d 38 * Configure pin pull-up/pull-down
AnnaBridge 174:b96e65c34a4d 39 */
AnnaBridge 174:b96e65c34a4d 40 void pin_mode(PinName pin, PinMode mode)
AnnaBridge 174:b96e65c34a4d 41 {
AnnaBridge 174:b96e65c34a4d 42 MBED_ASSERT(pin != (PinName)NC);
AnnaBridge 174:b96e65c34a4d 43 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
AnnaBridge 174:b96e65c34a4d 44 uint32_t port_index = NU_PINNAME_TO_PORT(pin);
AnnaBridge 174:b96e65c34a4d 45 GPIO_T *gpio_base = NU_PORT_BASE(port_index);
AnnaBridge 174:b96e65c34a4d 46
AnnaBridge 188:bcfe06ba3d64 47 uint32_t mode_intern;
AnnaBridge 188:bcfe06ba3d64 48
AnnaBridge 174:b96e65c34a4d 49 switch (mode) {
AnnaBridge 188:bcfe06ba3d64 50 case InputOnly:
AnnaBridge 174:b96e65c34a4d 51 mode_intern = GPIO_PMD_INPUT;
AnnaBridge 174:b96e65c34a4d 52 break;
AnnaBridge 188:bcfe06ba3d64 53
AnnaBridge 188:bcfe06ba3d64 54 case PushPullOutput:
AnnaBridge 174:b96e65c34a4d 55 mode_intern = GPIO_PMD_OUTPUT;
AnnaBridge 174:b96e65c34a4d 56 break;
AnnaBridge 188:bcfe06ba3d64 57
AnnaBridge 174:b96e65c34a4d 58 case OpenDrain:
AnnaBridge 174:b96e65c34a4d 59 mode_intern = GPIO_PMD_OPEN_DRAIN;
AnnaBridge 174:b96e65c34a4d 60 break;
AnnaBridge 174:b96e65c34a4d 61
AnnaBridge 188:bcfe06ba3d64 62 default:
AnnaBridge 188:bcfe06ba3d64 63 /* H/W doesn't support separate configuration for input pull mode/direction.
AnnaBridge 188:bcfe06ba3d64 64 * We expect upper layer would have translated input pull mode/direction
AnnaBridge 188:bcfe06ba3d64 65 * to I/O mode */
AnnaBridge 188:bcfe06ba3d64 66 return;
AnnaBridge 174:b96e65c34a4d 67 }
AnnaBridge 188:bcfe06ba3d64 68
AnnaBridge 174:b96e65c34a4d 69 GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
AnnaBridge 188:bcfe06ba3d64 70
AnnaBridge 188:bcfe06ba3d64 71 /* Invalid combinations of PinMode/PinDirection
AnnaBridge 188:bcfe06ba3d64 72 *
AnnaBridge 188:bcfe06ba3d64 73 * We assume developer would avoid the following combinations of PinMode/PinDirection
AnnaBridge 188:bcfe06ba3d64 74 * which are invalid:
AnnaBridge 188:bcfe06ba3d64 75 * 1. InputOnly/PIN_OUTPUT
AnnaBridge 188:bcfe06ba3d64 76 * 2. PushPullOutput/PIN_INPUT
AnnaBridge 188:bcfe06ba3d64 77 */
AnnaBridge 174:b96e65c34a4d 78 }