mirror of
https://github.com/nopnop2002/esp-idf-ssd1306.git
synced 2024-10-03 18:18:47 -04:00
291 lines
10 KiB
C
291 lines
10 KiB
C
#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/gpio.h"
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#include "driver/i2c.h"
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#include "esp_log.h"
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#include "ssd1306.h"
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#define TAG "SSD1306"
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#if CONFIG_I2C_PORT_0
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#define I2C_NUM I2C_NUM_0
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#elif CONFIG_I2C_PORT_1
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#define I2C_NUM I2C_NUM_1
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#else
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#define I2C_NUM I2C_NUM_0 // if spi is selected
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#endif
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#define I2C_MASTER_FREQ_HZ 400000 // I2C clock of SSD1306 can run at 400 kHz max.
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#define I2C_TICKS_TO_WAIT 100 // Maximum ticks to wait before issuing a timeout.
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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_NUM, &i2c_config));
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ESP_ERROR_CHECK(i2c_driver_install(I2C_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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dev->_i2c_num = I2C_NUM;
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}
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void i2c_device_add(SSD1306_t * dev, i2c_port_t i2c_num, int16_t reset)
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{
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ESP_LOGI(TAG, "Legacy i2c driver is used");
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ESP_LOGW(TAG, "Will not install i2c master driver");
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#if 0
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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_NUM, &i2c_config));
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ESP_ERROR_CHECK(i2c_driver_install(I2C_NUM, I2C_MODE_MASTER, 0, 0, 0));
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#endif
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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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dev->_i2c_num = i2c_num;
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}
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void i2c_init(SSD1306_t * dev, int width, int height) {
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dev->_width = width;
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dev->_height = height;
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dev->_pages = 8;
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if (dev->_height == 32) dev->_pages = 4;
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (dev->_address << 1) | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_CMD_STREAM, true);
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i2c_master_write_byte(cmd, OLED_CMD_DISPLAY_OFF, true); // AE
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i2c_master_write_byte(cmd, OLED_CMD_SET_MUX_RATIO, true); // A8
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if (dev->_height == 64) i2c_master_write_byte(cmd, 0x3F, true);
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if (dev->_height == 32) i2c_master_write_byte(cmd, 0x1F, true);
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i2c_master_write_byte(cmd, OLED_CMD_SET_DISPLAY_OFFSET, true); // D3
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i2c_master_write_byte(cmd, 0x00, true);
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//i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_DATA_STREAM, true); // 40
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i2c_master_write_byte(cmd, OLED_CMD_SET_DISPLAY_START_LINE, true); // 40
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//i2c_master_write_byte(cmd, OLED_CMD_SET_SEGMENT_REMAP, true); // A1
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if (dev->_flip) {
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i2c_master_write_byte(cmd, OLED_CMD_SET_SEGMENT_REMAP_0, true); // A0
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} else {
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i2c_master_write_byte(cmd, OLED_CMD_SET_SEGMENT_REMAP_1, true); // A1
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}
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i2c_master_write_byte(cmd, OLED_CMD_SET_COM_SCAN_MODE, true); // C8
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i2c_master_write_byte(cmd, OLED_CMD_SET_DISPLAY_CLK_DIV, true); // D5
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i2c_master_write_byte(cmd, 0x80, true);
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i2c_master_write_byte(cmd, OLED_CMD_SET_COM_PIN_MAP, true); // DA
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if (dev->_height == 64) i2c_master_write_byte(cmd, 0x12, true);
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if (dev->_height == 32) i2c_master_write_byte(cmd, 0x02, true);
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i2c_master_write_byte(cmd, OLED_CMD_SET_CONTRAST, true); // 81
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i2c_master_write_byte(cmd, 0xFF, true);
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i2c_master_write_byte(cmd, OLED_CMD_DISPLAY_RAM, true); // A4
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i2c_master_write_byte(cmd, OLED_CMD_SET_VCOMH_DESELCT, true); // DB
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i2c_master_write_byte(cmd, 0x40, true);
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i2c_master_write_byte(cmd, OLED_CMD_SET_MEMORY_ADDR_MODE, true); // 20
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//i2c_master_write_byte(cmd, OLED_CMD_SET_HORI_ADDR_MODE, true); // 00
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i2c_master_write_byte(cmd, OLED_CMD_SET_PAGE_ADDR_MODE, true); // 02
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// Set Lower Column Start Address for Page Addressing Mode
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i2c_master_write_byte(cmd, 0x00, true);
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// Set Higher Column Start Address for Page Addressing Mode
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i2c_master_write_byte(cmd, 0x10, true);
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i2c_master_write_byte(cmd, OLED_CMD_SET_CHARGE_PUMP, true); // 8D
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i2c_master_write_byte(cmd, 0x14, true);
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i2c_master_write_byte(cmd, OLED_CMD_DEACTIVE_SCROLL, true); // 2E
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i2c_master_write_byte(cmd, OLED_CMD_DISPLAY_NORMAL, true); // A6
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i2c_master_write_byte(cmd, OLED_CMD_DISPLAY_ON, true); // AF
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i2c_master_stop(cmd);
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esp_err_t res = i2c_master_cmd_begin(dev->_i2c_num, cmd, I2C_TICKS_TO_WAIT);
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if (res == ESP_OK) {
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ESP_LOGI(TAG, "OLED configured successfully");
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} else {
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ESP_LOGE(TAG, "OLED configuration failed. code: 0x%.2X", res);
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}
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i2c_cmd_link_delete(cmd);
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}
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void i2c_display_image(SSD1306_t * dev, int page, int seg, uint8_t * images, int width) {
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if (page >= dev->_pages) return;
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if (seg >= dev->_width) return;
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int _seg = seg + CONFIG_OFFSETX;
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uint8_t columLow = _seg & 0x0F;
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uint8_t columHigh = (_seg >> 4) & 0x0F;
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int _page = page;
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if (dev->_flip) {
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_page = (dev->_pages - page) - 1;
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}
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (dev->_address << 1) | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_CMD_STREAM, true);
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// Set Lower Column Start Address for Page Addressing Mode
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i2c_master_write_byte(cmd, (0x00 + columLow), true);
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// Set Higher Column Start Address for Page Addressing Mode
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i2c_master_write_byte(cmd, (0x10 + columHigh), true);
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// Set Page Start Address for Page Addressing Mode
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i2c_master_write_byte(cmd, 0xB0 | _page, true);
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i2c_master_stop(cmd);
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esp_err_t res = i2c_master_cmd_begin(dev->_i2c_num, cmd, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "Image command failed. code: 0x%.2X", res);
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}
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i2c_cmd_link_delete(cmd);
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cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (dev->_address << 1) | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_DATA_STREAM, true);
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i2c_master_write(cmd, images, width, true);
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i2c_master_stop(cmd);
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res = i2c_master_cmd_begin(dev->_i2c_num, cmd, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "Image command failed. code: 0x%.2X", res);
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}
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i2c_cmd_link_delete(cmd);
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}
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void i2c_contrast(SSD1306_t * dev, int contrast) {
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int _contrast = contrast;
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if (contrast < 0x0) _contrast = 0;
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if (contrast > 0xFF) _contrast = 0xFF;
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (dev->_address << 1) | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_CMD_STREAM, true); // 00
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i2c_master_write_byte(cmd, OLED_CMD_SET_CONTRAST, true); // 81
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i2c_master_write_byte(cmd, _contrast, true);
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i2c_master_stop(cmd);
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esp_err_t res = i2c_master_cmd_begin(dev->_i2c_num, cmd, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "Contrast command failed. code: 0x%.2X", res);
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}
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i2c_cmd_link_delete(cmd);
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}
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void i2c_hardware_scroll(SSD1306_t * dev, ssd1306_scroll_type_t scroll) {
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (dev->_address << 1) | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_CMD_STREAM, true); // 00
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if (scroll == SCROLL_RIGHT) {
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i2c_master_write_byte(cmd, OLED_CMD_HORIZONTAL_RIGHT, true); // 26
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i2c_master_write_byte(cmd, 0x00, true); // Dummy byte
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i2c_master_write_byte(cmd, 0x00, true); // Define start page address
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i2c_master_write_byte(cmd, 0x07, true); // Frame frequency
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i2c_master_write_byte(cmd, 0x07, true); // Define end page address
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i2c_master_write_byte(cmd, 0x00, true); //
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i2c_master_write_byte(cmd, 0xFF, true); //
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i2c_master_write_byte(cmd, OLED_CMD_ACTIVE_SCROLL, true); // 2F
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}
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if (scroll == SCROLL_LEFT) {
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i2c_master_write_byte(cmd, OLED_CMD_HORIZONTAL_LEFT, true); // 27
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i2c_master_write_byte(cmd, 0x00, true); // Dummy byte
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i2c_master_write_byte(cmd, 0x00, true); // Define start page address
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i2c_master_write_byte(cmd, 0x07, true); // Frame frequency
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i2c_master_write_byte(cmd, 0x07, true); // Define end page address
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i2c_master_write_byte(cmd, 0x00, true); //
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i2c_master_write_byte(cmd, 0xFF, true); //
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i2c_master_write_byte(cmd, OLED_CMD_ACTIVE_SCROLL, true); // 2F
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}
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if (scroll == SCROLL_DOWN) {
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i2c_master_write_byte(cmd, OLED_CMD_CONTINUOUS_SCROLL, true); // 29
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i2c_master_write_byte(cmd, 0x00, true); // Dummy byte
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i2c_master_write_byte(cmd, 0x00, true); // Define start page address
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i2c_master_write_byte(cmd, 0x07, true); // Frame frequency
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//i2c_master_write_byte(cmd, 0x01, true); // Define end page address
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i2c_master_write_byte(cmd, 0x00, true); // Define end page address
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i2c_master_write_byte(cmd, 0x3F, true); // Vertical scrolling offset
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i2c_master_write_byte(cmd, OLED_CMD_VERTICAL, true); // A3
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i2c_master_write_byte(cmd, 0x00, true);
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if (dev->_height == 64)
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//i2c_master_write_byte(cmd, 0x7F, true);
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i2c_master_write_byte(cmd, 0x40, true);
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if (dev->_height == 32)
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i2c_master_write_byte(cmd, 0x20, true);
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i2c_master_write_byte(cmd, OLED_CMD_ACTIVE_SCROLL, true); // 2F
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}
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if (scroll == SCROLL_UP) {
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i2c_master_write_byte(cmd, OLED_CMD_CONTINUOUS_SCROLL, true); // 29
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i2c_master_write_byte(cmd, 0x00, true); // Dummy byte
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i2c_master_write_byte(cmd, 0x00, true); // Define start page address
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i2c_master_write_byte(cmd, 0x07, true); // Frame frequency
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//i2c_master_write_byte(cmd, 0x01, true); // Define end page address
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i2c_master_write_byte(cmd, 0x00, true); // Define end page address
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i2c_master_write_byte(cmd, 0x01, true); // Vertical scrolling offset
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i2c_master_write_byte(cmd, OLED_CMD_VERTICAL, true); // A3
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i2c_master_write_byte(cmd, 0x00, true);
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if (dev->_height == 64)
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//i2c_master_write_byte(cmd, 0x7F, true);
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i2c_master_write_byte(cmd, 0x40, true);
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if (dev->_height == 32)
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i2c_master_write_byte(cmd, 0x20, true);
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i2c_master_write_byte(cmd, OLED_CMD_ACTIVE_SCROLL, true); // 2F
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}
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if (scroll == SCROLL_STOP) {
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i2c_master_write_byte(cmd, OLED_CMD_DEACTIVE_SCROLL, true); // 2E
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}
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i2c_master_stop(cmd);
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esp_err_t res = i2c_master_cmd_begin(dev->_i2c_num, cmd, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "Scroll command failed. code: 0x%.2X", res);
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}
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i2c_cmd_link_delete(cmd);
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}
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