esp-ena/components/interface/interface.c
2020-08-16 16:40:05 +02:00

115 lines
3.4 KiB
C

// 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 "ssd1306.h"
#include "ssd1306-gfx.h"
#include "interface.h"
static int old_button_states[GPIO_PIN_COUNT];
static int button_states[GPIO_PIN_COUNT];
static interface_button_callback button_callbacks[GPIO_PIN_COUNT];
static interface_display_function current_display_function;
void interface_register_button_callback(int button_gpio, interface_button_callback callback)
{
button_callbacks[button_gpio] = callback;
}
void interface_set_display_function(interface_display_function display_function)
{
ssd1306_clear(SSD1306_ADDRESS);
current_display_function = display_function;
}
void interface_input_check(uint8_t gpio)
{
button_states[gpio] = gpio_get_level(gpio);
if (old_button_states[gpio] != 0 && old_button_states[gpio] != 1)
{
old_button_states[gpio] = 1;
}
if (button_states[gpio] == 0 && button_states[gpio] != old_button_states[gpio] && button_callbacks[gpio] != NULL)
{
ssd1306_clear(SSD1306_ADDRESS);
(*button_callbacks[gpio])();
}
old_button_states[gpio] = button_states[gpio];
}
void interface_input_task(void *pvParameter)
{
while (1)
{
interface_input_check(INTERFACE_BUTTON_RST);
interface_input_check(INTERFACE_BUTTON_SET);
interface_input_check(INTERFACE_BUTTON_LFT);
interface_input_check(INTERFACE_BUTTON_RHT);
interface_input_check(INTERFACE_BUTTON_MID);
interface_input_check(INTERFACE_BUTTON_UP);
interface_input_check(INTERFACE_BUTTON_DWN);
vTaskDelay(20 / portTICK_PERIOD_MS);
}
}
void interface_display_task(void *pvParameter)
{
while (1)
{
if (current_display_function != NULL)
{
(*current_display_function)();
}
vTaskDelay(500 / portTICK_PERIOD_MS);
}
}
void interface_start(void)
{
gpio_config_t io_conf;
io_conf.pin_bit_mask = (1ULL << INTERFACE_BUTTON_RST) | (1ULL << INTERFACE_BUTTON_SET) |
(1ULL << INTERFACE_BUTTON_MID) | (1ULL << INTERFACE_BUTTON_RHT) |
(1ULL << INTERFACE_BUTTON_LFT) | (1ULL << INTERFACE_BUTTON_DWN) |
(1ULL << INTERFACE_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);
xTaskCreate(&interface_input_task, "interface_input_task", 4096, NULL, 5, NULL);
xTaskCreate(&interface_display_task, "interface_display_task", 4096, NULL, 5, NULL);
// init label
interface_init_label();
ssd1306_start(SSD1306_ADDRESS);
ssd1306_clear(SSD1306_ADDRESS);
for (int i = 0; i < 8; i++)
{
ssd1306_data(SSD1306_ADDRESS, ssd1306_gfx_logo[i], 64, i, 32, false);
}
}