mirror of https://github.com/esphome/esphome.git
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
#include "st7567_spi.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace st7567_spi {
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static const char *const TAG = "st7567_spi";
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void SPIST7567::setup() {
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ESP_LOGCONFIG(TAG, "Setting up SPI ST7567 display...");
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this->spi_setup();
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this->dc_pin_->setup();
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if (this->cs_)
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this->cs_->setup();
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this->init_reset_();
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ST7567::setup();
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}
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void SPIST7567::dump_config() {
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LOG_DISPLAY("", "SPI ST7567", this);
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ESP_LOGCONFIG(TAG, " Model: %s", this->model_str_());
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LOG_PIN(" CS Pin: ", this->cs_);
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LOG_PIN(" DC Pin: ", this->dc_pin_);
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LOG_PIN(" Reset Pin: ", this->reset_pin_);
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ESP_LOGCONFIG(TAG, " Mirror X: %s", YESNO(this->mirror_x_));
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ESP_LOGCONFIG(TAG, " Mirror Y: %s", YESNO(this->mirror_y_));
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ESP_LOGCONFIG(TAG, " Invert Colors: %s", YESNO(this->invert_colors_));
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LOG_UPDATE_INTERVAL(this);
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}
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void SPIST7567::command(uint8_t value) {
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if (this->cs_)
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this->cs_->digital_write(true);
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this->dc_pin_->digital_write(false);
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delay(1);
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this->enable();
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if (this->cs_)
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this->cs_->digital_write(false);
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this->write_byte(value);
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if (this->cs_)
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this->cs_->digital_write(true);
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this->disable();
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}
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void HOT SPIST7567::write_display_data() {
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// ST7567A has built-in RAM with 132x65 bit capacity which stores the display data.
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// but only first 128 pixels from each line are shown on screen
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// if screen got flipped horizontally then it shows last 128 pixels,
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// so we need to write x coordinate starting from column 4, not column 0
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this->command(esphome::st7567_base::ST7567_SET_START_LINE + this->start_line_);
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for (uint8_t y = 0; y < (uint8_t) this->get_height_internal() / 8; y++) {
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this->dc_pin_->digital_write(false);
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this->command(esphome::st7567_base::ST7567_PAGE_ADDR + y); // Set Page
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this->command(esphome::st7567_base::ST7567_COL_ADDR_H); // Set MSB Column address
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this->command(esphome::st7567_base::ST7567_COL_ADDR_L + this->get_offset_x_()); // Set LSB Column address
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this->dc_pin_->digital_write(true);
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this->enable();
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this->write_array(&this->buffer_[y * this->get_width_internal()], this->get_width_internal());
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this->disable();
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}
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}
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} // namespace st7567_spi
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} // namespace esphome
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