/* mbed Microcontroller Library
 * Copyright (c) 2015-2017 Nuvoton
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef MBED_PINNAMES_H
#define MBED_PINNAMES_H

#include "cmsis.h"

#ifdef __cplusplus
extern "C" {
#endif

#define NU_PININDEX_Pos                             0
#define NU_PININDEX_Msk                             (0xFFul << NU_PININDEX_Pos)
#define NU_PINPORT_Pos                              8
#define NU_PINPORT_Msk                              (0xFul << NU_PINPORT_Pos)
#define NU_PIN_MODINDEX_Pos                         12
#define NU_PIN_MODINDEX_Msk                         (0xFul << NU_PIN_MODINDEX_Pos)
#define NU_PIN_BIND_Pos                             16
#define NU_PIN_BIND_Msk                             (0x1ul << NU_PIN_BIND_Pos)

#define NU_PININDEX(PINNAME)                        (((unsigned int)(PINNAME) & NU_PININDEX_Msk) >> NU_PININDEX_Pos)
#define NU_PINPORT(PINNAME)                         (((unsigned int)(PINNAME) & NU_PINPORT_Msk) >> NU_PINPORT_Pos)
#define NU_PIN_BIND(PINNAME)                        (((unsigned int)(PINNAME) & NU_PIN_BIND_Msk) >> NU_PIN_BIND_Pos)
#define NU_PIN_MODINDEX(PINNAME)                    (((unsigned int)(PINNAME) & NU_PIN_MODINDEX_Msk) >> NU_PIN_MODINDEX_Pos)
#define NU_PINNAME(PORT, PIN)                       ((((unsigned int) (PORT)) << (NU_PINPORT_Pos)) | (((unsigned int) (PIN)) << NU_PININDEX_Pos))
#define NU_PINNAME_BIND(PINNAME, modname)           NU_PINNAME_BIND_(NU_PINPORT(PINNAME), NU_PININDEX(PINNAME), modname)
#define NU_PINNAME_BIND_(PORT, PIN, modname)        ((((unsigned int)(PORT)) << NU_PINPORT_Pos) | (((unsigned int)(PIN)) << NU_PININDEX_Pos) | (NU_MODINDEX(modname) << NU_PIN_MODINDEX_Pos) | NU_PIN_BIND_Msk)

#define NU_PORT_BASE(port)                          ((GPIO_T *)(((uint32_t) GPIOA_BASE) + 0x40 * port))
#define NU_MFP_POS(pin)                             ((pin % 8) * 4)
#define NU_MFP_MSK(pin)                             (0xful << NU_MFP_POS(pin))

// LEGACY
#define NU_PINNAME_TO_PIN(PINNAME)                  NU_PININDEX(PINNAME)
#define NU_PINNAME_TO_PORT(PINNAME)                 NU_PINPORT(PINNAME)
#define NU_PINNAME_TO_MODSUBINDEX(PINNAME)          NU_PIN_MODINDEX(PINNAME)
#define NU_PORT_N_PIN_TO_PINNAME(PORT, PIN)         NU_PINNAME((PORT), (PIN))

typedef enum {
    PIN_INPUT,
    PIN_OUTPUT
} PinDirection;

typedef enum {
    PullNone = 0,
    PullDown,
    PullUp,
    
    PushPull,
    OpenDrain,
    Quasi,
    
    PullDefault = PullUp,
} PinMode;

typedef enum {
    // Not connected
    NC = (int)0xFFFFFFFF,
    
    // Generic naming
    PA_0    = NU_PORT_N_PIN_TO_PINNAME(0, 0), PA_1, PA_2, PA_3, PA_4, PA_5, PA_6, PA_7, PA_8, PA_9, PA_10, PA_11, PA_12, PA_13, PA_14, PA_15,
    PB_0    = NU_PORT_N_PIN_TO_PINNAME(1, 0), PB_1, PB_2, PB_3, PB_4, PB_5, PB_6, PB_7, PB_8, PB_9, PB_10, PB_11, PB_12, PB_13, PB_14, PB_15,
    PC_0    = NU_PORT_N_PIN_TO_PINNAME(2, 0), PC_1, PC_2, PC_3, PC_4, PC_5, PC_6, PC_7, PC_8, PC_9, PC_10, PC_11, PC_12, PC_13, PC_14, PC_15,
    PD_0    = NU_PORT_N_PIN_TO_PINNAME(3, 0), PD_1, PD_2, PD_3, PD_4, PD_5, PD_6, PD_7, PD_8, PD_9, PD_10, PD_11, PD_12, PD_13, PD_14, PD_15,
    PE_0    = NU_PORT_N_PIN_TO_PINNAME(4, 0), PE_1, PE_2, PE_3, PE_4, PE_5, PE_6, PE_7, PE_8, PE_9, PE_10, PE_11, PE_12, PE_13, PE_14, PE_15,
    PF_0    = NU_PORT_N_PIN_TO_PINNAME(5, 0), PF_1, PF_2, PF_3, PF_4, PF_5,
    
    // Arduino UNO naming
    A0 = PA_0,
    A1 = PA_1,
    A2 = PA_2,
    A3 = PA_3,
    A4 = PA_4,
    A5 = PA_5,

    D0 = PB_4,
    D1 = PB_5,
    D2 = PA_12,
    D3 = PA_13,
    D4 = PA_14,
    D5 = PA_15,
    D6 = PC_12,
    D7 = PC_13,
    D8 = PE_0,
    D9 = PE_1,
    D10 = PC_0,
    D11 = PC_3,
    D12 = PC_2,
    D13 = PC_1,
    D14 = PC_8,
    D15 = PC_9,

    I2C_SCL = D15,
    I2C_SDA = D14,
        
    // NOTE: other board-specific naming
    // UART naming
    USBTX = PB_1,
    USBRX = PB_0,
    STDIO_UART_TX   = USBTX,
    STDIO_UART_RX   = USBRX,
    SERIAL_TX = USBTX,
    SERIAL_RX = USBRX,    
    // LED naming
    LED1 = PE_11,
    LED2 = PE_10,
    LED3 = PE_9,
    LED4 = LED1,
    LED_RED = LED3,
    LED_GREEN = LED1,
    LED_YELLOW = LED2,
    // Button naming
    SW1 = PE_5,
    SW2 = PE_6,
    
} PinName;

#ifdef __cplusplus
}
#endif

#endif // MBED_PINNAMES_H
