componeent structure, preparation for component branch

components/interface-input-buttons/CMakeLists.txt

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+idf_component_register(
+    SRCS 
+        "button-input.c"
+    INCLUDE_DIRS "."
+    PRIV_REQUIRES 
+        interface
+)

components/interface-input-buttons/button-input.c

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+// Copyright 2020 Lukas Haubaum
+//
+// Licensed under the GNU Affero General Public License, Version 3;
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     https://www.gnu.org/licenses/agpl-3.0.html
+//
+// 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 <stdio.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+
+#include "interface.h"
+
+#include "button-input.h"
+
+static int old_button_states[INTERFACE_COMMANDS_SIZE];
+static int button_states[INTERFACE_COMMANDS_SIZE];
+static int button_command_mapping[INTERFACE_COMMANDS_SIZE];
+
+void button_input_check(interface_command_t command)
+{
+    button_states[command] = gpio_get_level(button_command_mapping[command]);
+
+    if (old_button_states[command] != 0 && old_button_states[command] != 1)
+    {
+        old_button_states[command] = 1;
+    }
+
+    if (button_states[command] == 0 && button_states[command] != old_button_states[command])
+    {
+        interface_execute_command(command);
+    }
+
+    old_button_states[command] = button_states[command];
+}
+
+void button_input_task(void *pvParameter)
+{
+    while (1)
+    {
+        button_input_check(INTERFACE_COMMAND_RST);
+        button_input_check(INTERFACE_COMMAND_SET);
+        button_input_check(INTERFACE_COMMAND_MID);
+        button_input_check(INTERFACE_COMMAND_RHT);
+        button_input_check(INTERFACE_COMMAND_LFT);
+        button_input_check(INTERFACE_COMMAND_DWN);
+        button_input_check(INTERFACE_COMMAND_UP);
+        vTaskDelay(20 / portTICK_PERIOD_MS);
+    }
+}
+
+void button_input_start(void)
+{
+    gpio_config_t io_conf;
+
+    io_conf.pin_bit_mask = (1ULL << BUTTON_RST) | (1ULL << BUTTON_SET) |
+                           (1ULL << BUTTON_MID) | (1ULL << BUTTON_RHT) |
+                           (1ULL << BUTTON_LFT) | (1ULL << BUTTON_DWN) |
+                           (1ULL << BUTTON_UP);
+    io_conf.intr_type = GPIO_INTR_DISABLE;
+    io_conf.mode = GPIO_MODE_INPUT;
+    io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
+    io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
+    gpio_config(&io_conf);
+
+    button_command_mapping[INTERFACE_COMMAND_RST] = BUTTON_RST;
+    button_command_mapping[INTERFACE_COMMAND_SET] = BUTTON_SET;
+    button_command_mapping[INTERFACE_COMMAND_MID] = BUTTON_MID;
+    button_command_mapping[INTERFACE_COMMAND_RHT] = BUTTON_RHT;
+    button_command_mapping[INTERFACE_COMMAND_LFT] = BUTTON_LFT;
+    button_command_mapping[INTERFACE_COMMAND_DWN] = BUTTON_DWN;
+    button_command_mapping[INTERFACE_COMMAND_UP] = BUTTON_UP;
+
+    xTaskCreate(&button_input_task, "button_input_task", 4096, NULL, 5, NULL);
+}

components/interface-input-buttons/button-input.h

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+// Copyright 2020 Lukas Haubaum
+//
+// Licensed under the GNU Affero General Public License, Version 3;
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     https://www.gnu.org/licenses/agpl-3.0.html
+//
+// 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.
+/**
+ * @file
+ * 
+ * @brief execute interface commands via simple push buttons
+ *  
+ */
+#ifndef _button_input_H_
+#define _button_input_H_
+
+#define BUTTON_RST GPIO_NUM_32
+#define BUTTON_SET GPIO_NUM_33
+#define BUTTON_MID GPIO_NUM_25
+#define BUTTON_RHT GPIO_NUM_26
+#define BUTTON_LFT GPIO_NUM_27
+#define BUTTON_DWN GPIO_NUM_14
+#define BUTTON_UP GPIO_NUM_12
+
+/**
+ * @brief     
+ * 
+ * 
+ */
+void button_input_start(void);
+
+#endif