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https://github.com/alexandrebobkov/ESP-Nodes.git
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64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_log.h"
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#include "driver/i2c.h"
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#include "ssd1306.h"
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//#include "font8x8_basic.h"
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static const char *TAG = "ESP32-NODE-Display";
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#define I2C_MASTER_SCL_IO (22) /*!< GPIO number used for I2C master clock */
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#define I2C_MASTER_SDA_IO (21) /*!< GPIO number used for I2C master data */
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#define I2C_MASTER_NUM I2C_NUM_0 /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
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#define I2C_MASTER_FREQ_HZ 400000 /*!< I2C master clock frequency */
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#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
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#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
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#define I2C_MASTER_TIMEOUT_MS 1000
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#define I2C_ACKS 0x1
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#define I2C_ACKM 0x0
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#define I2C_NOACKM 0x1 // I2C NACK value
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#define I2C_WRITE_BIT I2C_MASTER_WRITE
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#define I2C_RED_BIT I2C_MASTER_READ
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#define I2C_ADDRESS 0x3C
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/*void i2c_master_init(SSD1306_t * dev, int16_t sda, int16_t scl, int16_t reset)
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{
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ESP_LOGI(TAG, "Legacy i2c driver is used");
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i2c_config_t i2c_config = {
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.mode = I2C_MODE_MASTER,
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.sda_io_num = sda,
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.scl_io_num = scl,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = I2C_MASTER_FREQ_HZ
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};
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ESP_ERROR_CHECK(i2c_param_config(I2C_MASTER_NUM, &i2c_config));
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ESP_ERROR_CHECK(i2c_driver_install(I2C_MASTER_NUM, I2C_MODE_MASTER, 0, 0, 0));
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if (reset >= 0) {
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//gpio_pad_select_gpio(reset);
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gpio_reset_pin(reset);
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gpio_set_direction(reset, GPIO_MODE_OUTPUT);
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gpio_set_level(reset, 0);
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vTaskDelay(50 / portTICK_PERIOD_MS);
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gpio_set_level(reset, 1);
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}
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dev->_address = I2C_ADDRESS;
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dev->_flip = false;
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}*/
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void app_main(void)
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{
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SSD1306_t dev;
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i2c_master_init(&dev, I2C_MASTER_SDA_IO, I2C_MASTER_SCL_IO, 18);
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ssd1306_init(&dev, 128, 32);
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ssd1306_clear_screen(&dev, false);
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ssd1306_contrast(&dev, 0xff);
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ssd1306_display_text_x3(&dev, 0, "hello", 5, false);
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vTaskDelay(3000 / portTICK_PERIOD_MS);
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}
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