mirror of
https://github.com/alexandrebobkov/ESP-Nodes.git
synced 2024-09-20 05:46:00 -04:00
64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "esp_log.h"
|
|
#include "driver/i2c.h"
|
|
#include "ssd1306.h"
|
|
#include "font8x8_basic.h"
|
|
|
|
static const char *TAG = "ESP32-NODE-Display";
|
|
|
|
#define I2C_MASTER_SCL_IO (22) /*!< GPIO number used for I2C master clock */
|
|
#define I2C_MASTER_SDA_IO (21) /*!< GPIO number used for I2C master data */
|
|
#define I2C_MASTER_NUM I2C_NUM_0 /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
|
|
#define I2C_MASTER_FREQ_HZ 400000 /*!< I2C master clock frequency */
|
|
#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
|
|
#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
|
|
#define I2C_MASTER_TIMEOUT_MS 1000
|
|
#define I2C_ACKS 0x1
|
|
#define I2C_ACKM 0x0
|
|
#define I2C_NOACKM 0x1 // I2C NACK value
|
|
#define I2C_WRITE_BIT I2C_MASTER_WRITE
|
|
#define I2C_RED_BIT I2C_MASTER_READ
|
|
#define I2C_ADDRESS 0x3C
|
|
|
|
/*void i2c_master_init(SSD1306_t * dev, int16_t sda, int16_t scl, int16_t reset)
|
|
{
|
|
ESP_LOGI(TAG, "Legacy i2c driver is used");
|
|
i2c_config_t i2c_config = {
|
|
.mode = I2C_MODE_MASTER,
|
|
.sda_io_num = sda,
|
|
.scl_io_num = scl,
|
|
.sda_pullup_en = GPIO_PULLUP_ENABLE,
|
|
.scl_pullup_en = GPIO_PULLUP_ENABLE,
|
|
.master.clk_speed = I2C_MASTER_FREQ_HZ
|
|
};
|
|
ESP_ERROR_CHECK(i2c_param_config(I2C_MASTER_NUM, &i2c_config));
|
|
ESP_ERROR_CHECK(i2c_driver_install(I2C_MASTER_NUM, I2C_MODE_MASTER, 0, 0, 0));
|
|
|
|
if (reset >= 0) {
|
|
//gpio_pad_select_gpio(reset);
|
|
gpio_reset_pin(reset);
|
|
gpio_set_direction(reset, GPIO_MODE_OUTPUT);
|
|
gpio_set_level(reset, 0);
|
|
vTaskDelay(50 / portTICK_PERIOD_MS);
|
|
gpio_set_level(reset, 1);
|
|
}
|
|
dev->_address = I2C_ADDRESS;
|
|
dev->_flip = false;
|
|
|
|
}*/
|
|
void app_main(void)
|
|
{
|
|
SSD1306_t dev;
|
|
|
|
i2c_master_init(&dev, I2C_MASTER_SDA_IO, I2C_MASTER_SCL_IO, 4);
|
|
ssd1306_init(&dev, 128, 32);
|
|
ssd1306_clear_screen(&dev, false);
|
|
ssd1306_contrast(&dev, 0xff);
|
|
ssd1306_display_text_x3(&dev, 0, "hello", 5, false);
|
|
vTaskDelay(3000 / portTICK_PERIOD_MS);
|
|
}
|