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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
#include "ssd1306_i2c.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace ssd1306_i2c {
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static const char *const TAG = "ssd1306_i2c";
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void I2CSSD1306::setup() {
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ESP_LOGCONFIG(TAG, "Setting up I2C SSD1306...");
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this->init_reset_();
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auto err = this->write(nullptr, 0);
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if (err != i2c::ERROR_OK) {
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this->error_code_ = COMMUNICATION_FAILED;
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this->mark_failed();
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return;
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}
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SSD1306::setup();
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}
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void I2CSSD1306::dump_config() {
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LOG_DISPLAY("", "I2C SSD1306", this);
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LOG_I2C_DEVICE(this);
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ESP_LOGCONFIG(TAG, " Model: %s", this->model_str_());
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LOG_PIN(" Reset Pin: ", this->reset_pin_);
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ESP_LOGCONFIG(TAG, " External VCC: %s", YESNO(this->external_vcc_));
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ESP_LOGCONFIG(TAG, " Flip X: %s", YESNO(this->flip_x_));
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ESP_LOGCONFIG(TAG, " Flip Y: %s", YESNO(this->flip_y_));
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ESP_LOGCONFIG(TAG, " Offset X: %d", this->offset_x_);
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ESP_LOGCONFIG(TAG, " Offset Y: %d", this->offset_y_);
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ESP_LOGCONFIG(TAG, " Inverted Color: %s", YESNO(this->invert_));
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LOG_UPDATE_INTERVAL(this);
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if (this->error_code_ == COMMUNICATION_FAILED) {
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ESP_LOGE(TAG, "Communication with SSD1306 failed!");
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}
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}
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void I2CSSD1306::command(uint8_t value) { this->write_byte(0x00, value); }
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void HOT I2CSSD1306::write_display_data() {
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if (this->is_sh1106_() || this->is_sh1107_()) {
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uint32_t i = 0;
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for (uint8_t page = 0; page < (uint8_t) this->get_height_internal() / 8; page++) {
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this->command(0xB0 + page); // row
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if (this->is_sh1106_()) {
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this->command(0x02); // lower column - 0x02 is historical SH1106 value
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} else {
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// Other SH1107 drivers use 0x00
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// Column values dont change and it seems they can be set only once,
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// but we follow SH1106 implementation and resend them
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this->command(0x00);
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}
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this->command(0x10); // higher column
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for (uint8_t x = 0; x < (uint8_t) this->get_width_internal() / 16; x++) {
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uint8_t data[16];
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for (uint8_t &j : data)
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j = this->buffer_[i++];
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this->write_bytes(0x40, data, sizeof(data));
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}
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}
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} else {
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size_t block_size = 16;
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if ((this->get_buffer_length_() & 8) == 8) {
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// use smaller block size for e.g. 72x40 displays where buffer size is multiple of 8, not 16
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block_size = 8;
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}
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for (uint32_t i = 0; i < this->get_buffer_length_();) {
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uint8_t data[block_size];
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for (uint8_t &j : data)
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j = this->buffer_[i++];
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this->write_bytes(0x40, data, sizeof(data));
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}
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}
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}
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} // namespace ssd1306_i2c
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} // namespace esphome
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