Amit Gandhi / mbed-dev

test

Fork of mbed-dev by mbed official

targets/TARGET_Realtek/TARGET_AMEBA/gpio_api.c@168:e84263d55307, 2017-06-21 (annotated)

Committer:
AnnaBridge
Date:
Wed Jun 21 17:46:44 2017 +0100
Revision:
168:e84263d55307
This updates the lib to the mbed lib v 145

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 168:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 168:e84263d55307 2 * Copyright (c) 2013-2016 Realtek Semiconductor Corp.
AnnaBridge 168:e84263d55307 3 *
AnnaBridge 168:e84263d55307 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 168:e84263d55307 5 * you may not use this file except in compliance with the License.
AnnaBridge 168:e84263d55307 6 * You may obtain a copy of the License at
AnnaBridge 168:e84263d55307 7 *
AnnaBridge 168:e84263d55307 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 168:e84263d55307 9 *
AnnaBridge 168:e84263d55307 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 168:e84263d55307 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 168:e84263d55307 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 168:e84263d55307 13 * See the License for the specific language governing permissions and
AnnaBridge 168:e84263d55307 14 * limitations under the License.
AnnaBridge 168:e84263d55307 15 */
AnnaBridge 168:e84263d55307 16 #include "objects.h"
AnnaBridge 168:e84263d55307 17 #include "pinmap.h"
AnnaBridge 168:e84263d55307 18
AnnaBridge 168:e84263d55307 19 #if CONFIG_GPIO_EN
AnnaBridge 168:e84263d55307 20
AnnaBridge 168:e84263d55307 21 #include "gpio_api.h"
AnnaBridge 168:e84263d55307 22
AnnaBridge 168:e84263d55307 23 // convert Mbed pin mode to HAL Pin Mode
AnnaBridge 168:e84263d55307 24 const u8 GPIO_InPinMode[] = {
AnnaBridge 168:e84263d55307 25 DIN_PULL_NONE, // PullNone
AnnaBridge 168:e84263d55307 26 DIN_PULL_HIGH, // PullUp
AnnaBridge 168:e84263d55307 27 DIN_PULL_LOW, // PullDown
AnnaBridge 168:e84263d55307 28 DIN_PULL_NONE // OpenDrain
AnnaBridge 168:e84263d55307 29 };
AnnaBridge 168:e84263d55307 30
AnnaBridge 168:e84263d55307 31 const u8 GPIO_SWPORT_DR_TBL[] = {
AnnaBridge 168:e84263d55307 32 GPIO_PORTA_DR,
AnnaBridge 168:e84263d55307 33 GPIO_PORTB_DR,
AnnaBridge 168:e84263d55307 34 GPIO_PORTC_DR
AnnaBridge 168:e84263d55307 35 };
AnnaBridge 168:e84263d55307 36
AnnaBridge 168:e84263d55307 37 const u8 GPIO_EXT_PORT_TBL[] = {
AnnaBridge 168:e84263d55307 38 GPIO_EXT_PORTA,
AnnaBridge 168:e84263d55307 39 GPIO_EXT_PORTB,
AnnaBridge 168:e84263d55307 40 GPIO_EXT_PORTC
AnnaBridge 168:e84263d55307 41 };
AnnaBridge 168:e84263d55307 42
AnnaBridge 168:e84263d55307 43 const u8 GPIO_SWPORT_DDR_TBL[] = {
AnnaBridge 168:e84263d55307 44 GPIO_PORTA_DDR,
AnnaBridge 168:e84263d55307 45 GPIO_PORTB_DDR,
AnnaBridge 168:e84263d55307 46 GPIO_PORTC_DDR
AnnaBridge 168:e84263d55307 47 };
AnnaBridge 168:e84263d55307 48
AnnaBridge 168:e84263d55307 49 void gpio_set_hal_pin_mode(gpio_t *obj)
AnnaBridge 168:e84263d55307 50 {
AnnaBridge 168:e84263d55307 51 uint32_t mode;
AnnaBridge 168:e84263d55307 52
AnnaBridge 168:e84263d55307 53 mode = obj->mode;
AnnaBridge 168:e84263d55307 54 if (obj->direction == PIN_OUTPUT) {
AnnaBridge 168:e84263d55307 55 if (mode == OpenDrain) {
AnnaBridge 168:e84263d55307 56 obj->hal_pin.pin_mode = DOUT_OPEN_DRAIN;
AnnaBridge 168:e84263d55307 57 } else {
AnnaBridge 168:e84263d55307 58 obj->hal_pin.pin_mode = DOUT_PUSH_PULL;
AnnaBridge 168:e84263d55307 59 }
AnnaBridge 168:e84263d55307 60 } else {
AnnaBridge 168:e84263d55307 61 if (mode < 4) {
AnnaBridge 168:e84263d55307 62 obj->hal_pin.pin_mode = GPIO_InPinMode[mode];
AnnaBridge 168:e84263d55307 63 } else {
AnnaBridge 168:e84263d55307 64 obj->hal_pin.pin_mode = DIN_PULL_NONE;
AnnaBridge 168:e84263d55307 65 }
AnnaBridge 168:e84263d55307 66 }
AnnaBridge 168:e84263d55307 67 }
AnnaBridge 168:e84263d55307 68
AnnaBridge 168:e84263d55307 69 uint32_t gpio_set(PinName pin)
AnnaBridge 168:e84263d55307 70 {
AnnaBridge 168:e84263d55307 71 u32 ip_pin;
AnnaBridge 168:e84263d55307 72
AnnaBridge 168:e84263d55307 73 DBG_ASSERT(pin != (PinName)NC);
AnnaBridge 168:e84263d55307 74 pin_function(pin, 0);
AnnaBridge 168:e84263d55307 75 ip_pin = HAL_GPIO_GetPinName((u32)pin);
AnnaBridge 168:e84263d55307 76
AnnaBridge 168:e84263d55307 77 return ip_pin;
AnnaBridge 168:e84263d55307 78 }
AnnaBridge 168:e84263d55307 79
AnnaBridge 168:e84263d55307 80 void gpio_init(gpio_t *obj, PinName pin)
AnnaBridge 168:e84263d55307 81 {
AnnaBridge 168:e84263d55307 82 uint32_t pin_name;
AnnaBridge 168:e84263d55307 83
AnnaBridge 168:e84263d55307 84 if (pin == (PinName)NC)
AnnaBridge 168:e84263d55307 85 return;
AnnaBridge 168:e84263d55307 86
AnnaBridge 168:e84263d55307 87 obj->pin = pin;
AnnaBridge 168:e84263d55307 88 obj->mode = PullNone;
AnnaBridge 168:e84263d55307 89 obj->direction = PIN_INPUT;
AnnaBridge 168:e84263d55307 90 pin_name = gpio_set(pin); // get the IP pin name
AnnaBridge 168:e84263d55307 91 obj->hal_pin.pin_name = pin_name;
AnnaBridge 168:e84263d55307 92 obj->hal_pin.pin_mode = DIN_PULL_NONE;
AnnaBridge 168:e84263d55307 93 obj->hal_port_num = HAL_GPIO_GET_PORT_BY_NAME(pin_name);
AnnaBridge 168:e84263d55307 94 obj->hal_pin_num = HAL_GPIO_GET_PIN_BY_NAME(pin_name);
AnnaBridge 168:e84263d55307 95 HAL_GPIO_Init(&obj->hal_pin);
AnnaBridge 168:e84263d55307 96 }
AnnaBridge 168:e84263d55307 97
AnnaBridge 168:e84263d55307 98 void gpio_mode(gpio_t *obj, PinMode mode)
AnnaBridge 168:e84263d55307 99 {
AnnaBridge 168:e84263d55307 100 obj->mode = mode;
AnnaBridge 168:e84263d55307 101 gpio_set_hal_pin_mode(obj);
AnnaBridge 168:e84263d55307 102 HAL_GPIO_Init(&obj->hal_pin);
AnnaBridge 168:e84263d55307 103 }
AnnaBridge 168:e84263d55307 104
AnnaBridge 168:e84263d55307 105 // Initial the Pin direction
AnnaBridge 168:e84263d55307 106 void gpio_dir(gpio_t *obj, PinDirection direction)
AnnaBridge 168:e84263d55307 107 {
AnnaBridge 168:e84263d55307 108 obj->direction = direction;
AnnaBridge 168:e84263d55307 109 gpio_set_hal_pin_mode(obj);
AnnaBridge 168:e84263d55307 110 HAL_GPIO_Init(&obj->hal_pin);
AnnaBridge 168:e84263d55307 111 }
AnnaBridge 168:e84263d55307 112
AnnaBridge 168:e84263d55307 113 // Change the pin direction directly
AnnaBridge 168:e84263d55307 114 void gpio_change_dir(gpio_t *obj, PinDirection direction)
AnnaBridge 168:e84263d55307 115 {
AnnaBridge 168:e84263d55307 116 uint32_t reg_value;
AnnaBridge 168:e84263d55307 117 uint8_t port_num;
AnnaBridge 168:e84263d55307 118 uint8_t pin_num;
AnnaBridge 168:e84263d55307 119
AnnaBridge 168:e84263d55307 120 obj->direction = direction;
AnnaBridge 168:e84263d55307 121 gpio_set_hal_pin_mode(obj);
AnnaBridge 168:e84263d55307 122 port_num = obj->hal_port_num;
AnnaBridge 168:e84263d55307 123 pin_num = obj->hal_pin_num;
AnnaBridge 168:e84263d55307 124
AnnaBridge 168:e84263d55307 125 reg_value = HAL_READ32(GPIO_REG_BASE, GPIO_SWPORT_DDR_TBL[port_num]);
AnnaBridge 168:e84263d55307 126 if (direction) {
AnnaBridge 168:e84263d55307 127 // Out
AnnaBridge 168:e84263d55307 128 reg_value |= (1 << pin_num);
AnnaBridge 168:e84263d55307 129 } else {
AnnaBridge 168:e84263d55307 130 // In
AnnaBridge 168:e84263d55307 131 reg_value &= ~(1 << pin_num);
AnnaBridge 168:e84263d55307 132 }
AnnaBridge 168:e84263d55307 133 HAL_WRITE32(GPIO_REG_BASE, GPIO_SWPORT_DDR_TBL[port_num], reg_value);
AnnaBridge 168:e84263d55307 134 }
AnnaBridge 168:e84263d55307 135
AnnaBridge 168:e84263d55307 136 void gpio_write(gpio_t *obj, int value)
AnnaBridge 168:e84263d55307 137 {
AnnaBridge 168:e84263d55307 138 HAL_GPIO_PIN *hal_pin=&obj->hal_pin;
AnnaBridge 168:e84263d55307 139 volatile uint32_t reg_value;
AnnaBridge 168:e84263d55307 140 uint8_t port_num;
AnnaBridge 168:e84263d55307 141 uint8_t pin_num;
AnnaBridge 168:e84263d55307 142
AnnaBridge 168:e84263d55307 143 if (hal_pin->pin_mode != DOUT_OPEN_DRAIN) {
AnnaBridge 168:e84263d55307 144 port_num = obj->hal_port_num;
AnnaBridge 168:e84263d55307 145 pin_num = obj->hal_pin_num;
AnnaBridge 168:e84263d55307 146
AnnaBridge 168:e84263d55307 147 reg_value = HAL_READ32(GPIO_REG_BASE, GPIO_SWPORT_DR_TBL[port_num]);
AnnaBridge 168:e84263d55307 148 reg_value &= ~(1 << pin_num);
AnnaBridge 168:e84263d55307 149 reg_value |= ((value&0x01)<< pin_num);
AnnaBridge 168:e84263d55307 150 HAL_WRITE32(GPIO_REG_BASE, GPIO_SWPORT_DR_TBL[port_num], reg_value);
AnnaBridge 168:e84263d55307 151 } else {
AnnaBridge 168:e84263d55307 152 HAL_GPIO_WritePin(&obj->hal_pin, value);
AnnaBridge 168:e84263d55307 153 }
AnnaBridge 168:e84263d55307 154 }
AnnaBridge 168:e84263d55307 155
AnnaBridge 168:e84263d55307 156 int gpio_read(gpio_t *obj)
AnnaBridge 168:e84263d55307 157 {
AnnaBridge 168:e84263d55307 158 volatile uint32_t reg_value;
AnnaBridge 168:e84263d55307 159 uint8_t port_num;
AnnaBridge 168:e84263d55307 160 uint8_t pin_num;
AnnaBridge 168:e84263d55307 161 HAL_GPIO_PIN_MODE pin_mode;
AnnaBridge 168:e84263d55307 162
AnnaBridge 168:e84263d55307 163 port_num = obj->hal_port_num;
AnnaBridge 168:e84263d55307 164 pin_num = obj->hal_pin_num;
AnnaBridge 168:e84263d55307 165 pin_mode = obj->hal_pin.pin_mode;
AnnaBridge 168:e84263d55307 166
AnnaBridge 168:e84263d55307 167 reg_value = HAL_READ32(GPIO_REG_BASE, GPIO_EXT_PORT_TBL[port_num]);
AnnaBridge 168:e84263d55307 168 if (pin_mode != DOUT_OPEN_DRAIN) {
AnnaBridge 168:e84263d55307 169 return ((reg_value >> pin_num) & 0x01);
AnnaBridge 168:e84263d55307 170 } else {
AnnaBridge 168:e84263d55307 171 return (!((reg_value >> pin_num) & 0x01));
AnnaBridge 168:e84263d55307 172 }
AnnaBridge 168:e84263d55307 173 }
AnnaBridge 168:e84263d55307 174
AnnaBridge 168:e84263d55307 175 // This API only works for non-Open-Drain pin
AnnaBridge 168:e84263d55307 176 void gpio_direct_write(gpio_t *obj, BOOL value)
AnnaBridge 168:e84263d55307 177 {
AnnaBridge 168:e84263d55307 178 uint8_t port_num;
AnnaBridge 168:e84263d55307 179 uint8_t pin_num;
AnnaBridge 168:e84263d55307 180 uint32_t reg_value;
AnnaBridge 168:e84263d55307 181
AnnaBridge 168:e84263d55307 182 port_num = obj->hal_port_num;
AnnaBridge 168:e84263d55307 183 pin_num = obj->hal_pin_num;
AnnaBridge 168:e84263d55307 184
AnnaBridge 168:e84263d55307 185 reg_value = HAL_READ32(GPIO_REG_BASE, GPIO_SWPORT_DR_TBL[port_num]);
AnnaBridge 168:e84263d55307 186 reg_value &= ~(1 << pin_num);
AnnaBridge 168:e84263d55307 187 reg_value |= (value<< pin_num);
AnnaBridge 168:e84263d55307 188 HAL_WRITE32(GPIO_REG_BASE, GPIO_SWPORT_DR_TBL[port_num], reg_value);
AnnaBridge 168:e84263d55307 189 }
AnnaBridge 168:e84263d55307 190
AnnaBridge 168:e84263d55307 191 void gpio_pull_ctrl(gpio_t *obj, PinMode pull_type)
AnnaBridge 168:e84263d55307 192 {
AnnaBridge 168:e84263d55307 193 HAL_GPIO_PullCtrl((u32) obj->pin, (u32)pull_type);
AnnaBridge 168:e84263d55307 194 }
AnnaBridge 168:e84263d55307 195
AnnaBridge 168:e84263d55307 196
AnnaBridge 168:e84263d55307 197 void gpio_deinit(gpio_t *obj)
AnnaBridge 168:e84263d55307 198 {
AnnaBridge 168:e84263d55307 199 HAL_GPIO_DeInit(&obj->hal_pin);
AnnaBridge 168:e84263d55307 200 }
AnnaBridge 168:e84263d55307 201
AnnaBridge 168:e84263d55307 202 #endif