Import Mbed OS hard-float snapshot

targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/gpio_api.c

@@ -0,0 +1,101 @@
+/****************************************************************************
+ *
+ * Copyright 2020 Samsung Electronics All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#include "mbed_assert.h"
+#include "gpio_api.h"
+#include "pinmap.h"
+#include "cmsis.h"
+
+void gpio_init(gpio_t *obj, PinName pin)
+{
+    obj->pin = pin;
+
+    if (pin == (PinName)NC) {
+        return;
+    }
+
+    uint32_t port = BP6A_PORT_IDX(obj->pin);
+    uint32_t mask = 1 << pin;
+    uint8_t pin_n =  BP6A_PIN_IDX(pin);
+
+    bp6a_set_pin_config(port, pin_n, (PIN_INPUT | PIN_OUTPUT));
+
+    BP_GPIO_TypeDef *gpio_base = (BP_GPIO_TypeDef *)GPIO_PORT_BASE(port);
+    putreg32(&(gpio_base->ALTFUNCCLR), mask);
+}
+
+void gpio_mode(gpio_t *obj, PinMode mode)
+{
+    pin_mode(obj->pin, mode);
+}
+
+void gpio_dir(gpio_t *obj, PinDirection direction)
+{
+    bp6a_gpio_set_dir(BP6A_PORT_IDX(obj->pin), BP6A_PIN_IDX(obj->pin), (PIN_INPUT == direction));
+}
+
+void gpio_write(gpio_t *obj, int value)
+{
+    if (obj->pin == (PinName)NC) {
+        return;
+    }
+
+    uint32_t port = BP6A_PORT_IDX(obj->pin);
+    uint32_t mask = 1 << BP6A_PIN_IDX(obj->pin);
+    BP_GPIO_TypeDef *gpio_base = (BP_GPIO_TypeDef *)GPIO_PORT_BASE(port);
+
+    modifyreg32(&(gpio_base->DATAOUT), mask, (value > 0) ? mask : 0);
+
+}
+
+int gpio_read(gpio_t *obj)
+{
+    if (obj->pin == (PinName)NC) {
+        return 0;
+    }
+
+    uint32_t port = BP6A_PORT_IDX(obj->pin);
+    uint32_t pin_n = BP6A_PIN_IDX(obj->pin);
+    BP_GPIO_TypeDef *gpio_base = (BP_GPIO_TypeDef *)GPIO_PORT_BASE(port);
+
+    return (getreg32(&(gpio_base->DATA)) >> pin_n) & 0x01;
+}
+
+uint32_t gpio_set(PinName pin)
+{
+    uint32_t port = BP6A_PORT_IDX(pin);
+    uint32_t pin_n = BP6A_PIN_IDX(pin);
+
+    bp6a_gpio_set_dir(port, pin_n, true);
+    return (1u << (uint32_t) pin);
+}
+
+int gpio_is_connected(const gpio_t *obj)
+{
+    if (obj->pin == (PinName) NC) {
+        return 0;
+    }
+
+    uint32_t port = BP6A_PORT_IDX(obj->pin);
+    uint32_t pin_n = BP6A_PIN_IDX(obj->pin);
+
+    BP_GPIO_TypeDef *gpio_base = (BP_GPIO_TypeDef *)GPIO_PORT_BASE(port);
+
+    return !(getreg32(&(gpio_base->ALTFUNCSET)) >> pin_n);
+}