mirror of
https://github.com/nopnop2002/esp-idf-ssd1306.git
synced 2024-10-03 18:18:47 -04:00
291 lines
9.6 KiB
C
291 lines
9.6 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_master.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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i2c_master_dev_handle_t dev_handle;
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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, "New i2c driver is used");
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i2c_master_bus_config_t i2c_mst_config = {
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.clk_source = I2C_CLK_SRC_DEFAULT,
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.glitch_ignore_cnt = 7,
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.i2c_port = I2C_NUM,
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.scl_io_num = scl,
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.sda_io_num = sda,
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.flags.enable_internal_pullup = true,
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};
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i2c_master_bus_handle_t bus_handle;
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ESP_ERROR_CHECK(i2c_new_master_bus(&i2c_mst_config, &bus_handle));
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i2c_device_config_t dev_cfg = {
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.dev_addr_length = I2C_ADDR_BIT_LEN_7,
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.device_address = I2C_ADDRESS,
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.scl_speed_hz = I2C_MASTER_FREQ_HZ,
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};
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//i2c_master_dev_handle_t dev_handle;
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ESP_ERROR_CHECK(i2c_master_bus_add_device(bus_handle, &dev_cfg, &dev_handle));
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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_bus_add(SSD1306_t * dev, i2c_master_bus_handle_t bus_handle, i2c_port_t i2c_num, int16_t reset)
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{
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ESP_LOGI(TAG, "New 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_master_bus_config_t i2c_mst_config = {
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.clk_source = I2C_CLK_SRC_DEFAULT,
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.glitch_ignore_cnt = 7,
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.i2c_port = I2C_NUM,
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.scl_io_num = scl,
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.sda_io_num = sda,
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.flags.enable_internal_pullup = true,
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};
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i2c_master_bus_handle_t bus_handle;
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ESP_ERROR_CHECK(i2c_new_master_bus(&i2c_mst_config, &bus_handle));
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#endif
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i2c_device_config_t dev_cfg = {
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.dev_addr_length = I2C_ADDR_BIT_LEN_7,
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.device_address = I2C_ADDRESS,
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.scl_speed_hz = I2C_MASTER_FREQ_HZ,
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};
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//i2c_master_dev_handle_t dev_handle;
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ESP_ERROR_CHECK(i2c_master_bus_add_device(bus_handle, &dev_cfg, &dev_handle));
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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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uint8_t out_buf[27];
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int out_index = 0;
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out_buf[out_index++] = OLED_CONTROL_BYTE_CMD_STREAM;
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out_buf[out_index++] = OLED_CMD_DISPLAY_OFF; // AE
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out_buf[out_index++] = OLED_CMD_SET_MUX_RATIO; // A8
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if (dev->_height == 64) out_buf[out_index++] = 0x3F;
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if (dev->_height == 32) out_buf[out_index++] = 0x1F;
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out_buf[out_index++] = OLED_CMD_SET_DISPLAY_OFFSET; // D3
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out_buf[out_index++] = 0x00;
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//out_buf[out_index++] = OLED_CONTROL_BYTE_DATA_STREAM; // 40
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out_buf[out_index++] = OLED_CMD_SET_DISPLAY_START_LINE; // 40
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//out_buf[out_index++] = OLED_CMD_SET_SEGMENT_REMAP; // A1
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if (dev->_flip) {
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out_buf[out_index++] = OLED_CMD_SET_SEGMENT_REMAP_0; // A0
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} else {
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out_buf[out_index++] = OLED_CMD_SET_SEGMENT_REMAP_1; // A1
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}
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out_buf[out_index++] = OLED_CMD_SET_COM_SCAN_MODE; // C8
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out_buf[out_index++] = OLED_CMD_SET_DISPLAY_CLK_DIV; // D5
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out_buf[out_index++] = 0x80;
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out_buf[out_index++] = OLED_CMD_SET_COM_PIN_MAP; // DA
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if (dev->_height == 64) out_buf[out_index++] = 0x12;
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if (dev->_height == 32) out_buf[out_index++] = 0x02;
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out_buf[out_index++] = OLED_CMD_SET_CONTRAST; // 81
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out_buf[out_index++] = 0xFF;
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out_buf[out_index++] = OLED_CMD_DISPLAY_RAM; // A4
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out_buf[out_index++] = OLED_CMD_SET_VCOMH_DESELCT; // DB
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out_buf[out_index++] = 0x40;
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out_buf[out_index++] = OLED_CMD_SET_MEMORY_ADDR_MODE; // 20
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//out_buf[out_index++] = OLED_CMD_SET_HORI_ADDR_MODE; // 00
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out_buf[out_index++] = OLED_CMD_SET_PAGE_ADDR_MODE; // 02
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// Set Lower Column Start Address for Page Addressing Mode
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out_buf[out_index++] = 0x00;
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// Set Higher Column Start Address for Page Addressing Mode
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out_buf[out_index++] = 0x10;
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out_buf[out_index++] = OLED_CMD_SET_CHARGE_PUMP; // 8D
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out_buf[out_index++] = 0x14;
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out_buf[out_index++] = OLED_CMD_DEACTIVE_SCROLL; // 2E
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out_buf[out_index++] = OLED_CMD_DISPLAY_NORMAL; // A6
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out_buf[out_index++] = OLED_CMD_DISPLAY_ON; // AF
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esp_err_t res;
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res = i2c_master_transmit(dev_handle, out_buf, out_index, 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, "Could not write to device [0x%02x at %d]: %d (%s)", dev->_address, dev->_i2c_num, res, esp_err_to_name(res));
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}
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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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uint8_t *out_buf;
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out_buf = malloc(width + 1);
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if (out_buf == NULL) {
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ESP_LOGE(TAG, "malloc fail");
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return;
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}
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int out_index = 0;
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out_buf[out_index++] = OLED_CONTROL_BYTE_CMD_STREAM;
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// Set Lower Column Start Address for Page Addressing Mode
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out_buf[out_index++] = (0x00 + columLow);
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// Set Higher Column Start Address for Page Addressing Mode
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out_buf[out_index++] = (0x10 + columHigh);
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// Set Page Start Address for Page Addressing Mode
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out_buf[out_index++] = 0xB0 | _page;
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esp_err_t res;
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res = i2c_master_transmit(dev_handle, out_buf, out_index, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK)
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ESP_LOGE(TAG, "Could not write to device [0x%02x at %d]: %d (%s)", dev->_address, dev->_i2c_num, res, esp_err_to_name(res));
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out_buf[0] = OLED_CONTROL_BYTE_DATA_STREAM;
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memcpy(&out_buf[1], images, width);
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res = i2c_master_transmit(dev_handle, out_buf, width + 1, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK)
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ESP_LOGE(TAG, "Could not write to device [0x%02x at %d]: %d (%s)", dev->_address, dev->_i2c_num, res, esp_err_to_name(res));
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free(out_buf);
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}
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void i2c_contrast(SSD1306_t * dev, int contrast) {
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uint8_t _contrast = contrast;
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if (contrast < 0x0) _contrast = 0;
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if (contrast > 0xFF) _contrast = 0xFF;
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uint8_t out_buf[3];
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int out_index = 0;
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out_buf[out_index++] = OLED_CONTROL_BYTE_CMD_STREAM; // 00
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out_buf[out_index++] = OLED_CMD_SET_CONTRAST; // 81
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out_buf[out_index++] = _contrast;
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esp_err_t res = i2c_master_transmit(dev_handle, out_buf, 3, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK)
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ESP_LOGE(TAG, "Could not write to device [0x%02x at %d]: %d (%s)", dev->_address, dev->_i2c_num, res, esp_err_to_name(res));
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}
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void i2c_hardware_scroll(SSD1306_t * dev, ssd1306_scroll_type_t scroll) {
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uint8_t out_buf[11];
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int out_index = 0;
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out_buf[out_index++] = OLED_CONTROL_BYTE_CMD_STREAM; // 00
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if (scroll == SCROLL_RIGHT) {
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out_buf[out_index++] = OLED_CMD_HORIZONTAL_RIGHT; // 26
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out_buf[out_index++] = 0x00; // Dummy byte
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out_buf[out_index++] = 0x00; // Define start page address
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out_buf[out_index++] = 0x07; // Frame frequency
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out_buf[out_index++] = 0x07; // Define end page address
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out_buf[out_index++] = 0x00; //
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out_buf[out_index++] = 0xFF; //
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out_buf[out_index++] = OLED_CMD_ACTIVE_SCROLL; // 2F
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}
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if (scroll == SCROLL_LEFT) {
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out_buf[out_index++] = OLED_CMD_HORIZONTAL_LEFT; // 27
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out_buf[out_index++] = 0x00; // Dummy byte
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out_buf[out_index++] = 0x00; // Define start page address
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out_buf[out_index++] = 0x07; // Frame frequency
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out_buf[out_index++] = 0x07; // Define end page address
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out_buf[out_index++] = 0x00; //
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out_buf[out_index++] = 0xFF; //
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out_buf[out_index++] = OLED_CMD_ACTIVE_SCROLL; // 2F
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}
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if (scroll == SCROLL_DOWN) {
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out_buf[out_index++] = OLED_CMD_CONTINUOUS_SCROLL; // 29
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out_buf[out_index++] = 0x00; // Dummy byte
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out_buf[out_index++] = 0x00; // Define start page address
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out_buf[out_index++] = 0x07; // Frame frequency
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//out_buf[out_index++] = 0x01; // Define end page address
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out_buf[out_index++] = 0x00; // Define end page address
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out_buf[out_index++] = 0x3F; // Vertical scrolling offset
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out_buf[out_index++] = OLED_CMD_VERTICAL; // A3
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out_buf[out_index++] = 0x00;
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if (dev->_height == 64)
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//out_buf[out_index++] = 0x7F;
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out_buf[out_index++] = 0x40;
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if (dev->_height == 32)
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out_buf[out_index++] = 0x20;
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out_buf[out_index++] = OLED_CMD_ACTIVE_SCROLL; // 2F
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}
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if (scroll == SCROLL_UP) {
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out_buf[out_index++] = OLED_CMD_CONTINUOUS_SCROLL; // 29
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out_buf[out_index++] = 0x00; // Dummy byte
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out_buf[out_index++] = 0x00; // Define start page address
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out_buf[out_index++] = 0x07; // Frame frequency
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//out_buf[out_index++] = 0x01; // Define end page address
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out_buf[out_index++] = 0x00; // Define end page address
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out_buf[out_index++] = 0x01; // Vertical scrolling offset
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out_buf[out_index++] = OLED_CMD_VERTICAL; // A3
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out_buf[out_index++] = 0x00;
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if (dev->_height == 64)
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//out_buf[out_index++] = 0x7F;
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out_buf[out_index++] = 0x40;
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if (dev->_height == 32)
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out_buf[out_index++] = 0x20;
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out_buf[out_index++] = OLED_CMD_ACTIVE_SCROLL; // 2F
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}
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if (scroll == SCROLL_STOP) {
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out_buf[out_index++] = OLED_CMD_DEACTIVE_SCROLL; // 2E
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}
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esp_err_t res = i2c_master_transmit(dev_handle, out_buf, out_index, I2C_TICKS_TO_WAIT);
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if (res != ESP_OK)
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ESP_LOGE(TAG, "Could not write to device [0x%02x at %d]: %d (%s)", dev->_address, dev->_i2c_num, res, esp_err_to_name(res));
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}
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