mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 19:54:14 +01:00
126 lines
3 KiB
C++
126 lines
3 KiB
C++
#include "pcd_8544.h"
|
|
#include "esphome/core/log.h"
|
|
#include "esphome/core/application.h"
|
|
#include "esphome/core/helpers.h"
|
|
|
|
namespace esphome {
|
|
namespace pcd8544 {
|
|
|
|
static const char *const TAG = "pcd_8544";
|
|
|
|
void PCD8544::setup_pins_() {
|
|
this->spi_setup();
|
|
this->init_reset_();
|
|
this->dc_pin_->setup();
|
|
}
|
|
|
|
void PCD8544::init_reset_() {
|
|
if (this->reset_pin_ != nullptr) {
|
|
this->reset_pin_->setup();
|
|
this->reset_pin_->digital_write(true);
|
|
delay(1);
|
|
// Trigger Reset
|
|
this->reset_pin_->digital_write(false);
|
|
delay(10);
|
|
// Wake up
|
|
this->reset_pin_->digital_write(true);
|
|
}
|
|
}
|
|
|
|
void PCD8544::initialize() {
|
|
this->init_internal_(this->get_buffer_length_());
|
|
|
|
this->command(this->PCD8544_FUNCTIONSET | this->PCD8544_EXTENDEDINSTRUCTION);
|
|
// LCD bias select (4 is optimal?)
|
|
this->command(this->PCD8544_SETBIAS | 0x04);
|
|
|
|
// contrast
|
|
this->command(this->PCD8544_SETVOP | this->contrast_);
|
|
|
|
// normal mode
|
|
this->command(this->PCD8544_FUNCTIONSET);
|
|
|
|
// Set display to Normal
|
|
this->command(this->PCD8544_DISPLAYCONTROL | this->PCD8544_DISPLAYNORMAL);
|
|
}
|
|
|
|
void PCD8544::start_command_() {
|
|
this->dc_pin_->digital_write(false);
|
|
this->enable();
|
|
}
|
|
void PCD8544::end_command_() { this->disable(); }
|
|
void PCD8544::start_data_() {
|
|
this->dc_pin_->digital_write(true);
|
|
this->enable();
|
|
}
|
|
void PCD8544::end_data_() { this->disable(); }
|
|
|
|
int PCD8544::get_width_internal() { return 84; }
|
|
int PCD8544::get_height_internal() { return 48; }
|
|
|
|
size_t PCD8544::get_buffer_length_() {
|
|
return size_t(this->get_width_internal()) * size_t(this->get_height_internal()) / 8u;
|
|
}
|
|
|
|
void HOT PCD8544::display() {
|
|
uint8_t col, maxcol, p;
|
|
|
|
for (p = 0; p < 6; p++) {
|
|
this->command(this->PCD8544_SETYADDR | p);
|
|
|
|
// start at the beginning of the row
|
|
col = 0;
|
|
maxcol = this->get_width_internal() - 1;
|
|
|
|
this->command(this->PCD8544_SETXADDR | col);
|
|
|
|
this->start_data_();
|
|
for (; col <= maxcol; col++) {
|
|
this->write_byte(this->buffer_[(this->get_width_internal() * p) + col]);
|
|
}
|
|
this->end_data_();
|
|
}
|
|
|
|
this->command(this->PCD8544_SETYADDR);
|
|
}
|
|
|
|
void HOT PCD8544::draw_absolute_pixel_internal(int x, int y, Color color) {
|
|
if (x >= this->get_width_internal() || y >= this->get_height_internal() || x < 0 || y < 0) {
|
|
return;
|
|
}
|
|
|
|
uint16_t pos = x + (y / 8) * this->get_width_internal();
|
|
uint8_t subpos = y % 8;
|
|
if (color.is_on()) {
|
|
this->buffer_[pos] |= (1 << subpos);
|
|
} else {
|
|
this->buffer_[pos] &= ~(1 << subpos);
|
|
}
|
|
}
|
|
|
|
void PCD8544::dump_config() {
|
|
LOG_DISPLAY("", "PCD8544", this);
|
|
LOG_PIN(" DC Pin: ", this->dc_pin_);
|
|
LOG_PIN(" Reset Pin: ", this->reset_pin_);
|
|
LOG_UPDATE_INTERVAL(this);
|
|
}
|
|
|
|
void PCD8544::command(uint8_t value) {
|
|
this->start_command_();
|
|
this->write_byte(value);
|
|
this->end_command_();
|
|
}
|
|
|
|
void PCD8544::update() {
|
|
this->do_update_();
|
|
this->display();
|
|
}
|
|
|
|
void PCD8544::fill(Color color) {
|
|
uint8_t fill = color.is_on() ? 0xFF : 0x00;
|
|
for (uint32_t i = 0; i < this->get_buffer_length_(); i++)
|
|
this->buffer_[i] = fill;
|
|
}
|
|
|
|
} // namespace pcd8544
|
|
} // namespace esphome
|