mirror of
https://github.com/esphome/esphome.git
synced 2024-11-13 02:37:47 +01:00
300 lines
9.2 KiB
C++
300 lines
9.2 KiB
C++
#include "tm1637.h"
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#include "esphome/core/log.h"
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#include "esphome/core/helpers.h"
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namespace esphome {
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namespace tm1637 {
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static const char *const TAG = "display.tm1637";
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const uint8_t TM1637_I2C_COMM1 = 0x40;
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const uint8_t TM1637_I2C_COMM2 = 0xC0;
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const uint8_t TM1637_I2C_COMM3 = 0x80;
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const uint8_t TM1637_UNKNOWN_CHAR = 0b11111111;
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//
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// A
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// ---
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// F | | B
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// -G-
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// E | | C
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// ---
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// D X
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// XABCDEFG
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const uint8_t TM1637_ASCII_TO_RAW[] PROGMEM = {
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0b00000000, // ' ', ord 0x20
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0b10110000, // '!', ord 0x21
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0b00100010, // '"', ord 0x22
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TM1637_UNKNOWN_CHAR, // '#', ord 0x23
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TM1637_UNKNOWN_CHAR, // '$', ord 0x24
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0b01001001, // '%', ord 0x25
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TM1637_UNKNOWN_CHAR, // '&', ord 0x26
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0b00000010, // ''', ord 0x27
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0b01001110, // '(', ord 0x28
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0b01111000, // ')', ord 0x29
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0b01000000, // '*', ord 0x2A
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TM1637_UNKNOWN_CHAR, // '+', ord 0x2B
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0b00010000, // ',', ord 0x2C
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0b00000001, // '-', ord 0x2D
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0b10000000, // '.', ord 0x2E
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TM1637_UNKNOWN_CHAR, // '/', ord 0x2F
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0b01111110, // '0', ord 0x30
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0b00110000, // '1', ord 0x31
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0b01101101, // '2', ord 0x32
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0b01111001, // '3', ord 0x33
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0b00110011, // '4', ord 0x34
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0b01011011, // '5', ord 0x35
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0b01011111, // '6', ord 0x36
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0b01110000, // '7', ord 0x37
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0b01111111, // '8', ord 0x38
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0b01111011, // '9', ord 0x39
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0b01001000, // ':', ord 0x3A
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0b01011000, // ';', ord 0x3B
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TM1637_UNKNOWN_CHAR, // '<', ord 0x3C
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TM1637_UNKNOWN_CHAR, // '=', ord 0x3D
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TM1637_UNKNOWN_CHAR, // '>', ord 0x3E
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0b01100101, // '?', ord 0x3F
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0b01101111, // '@', ord 0x40
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0b01110111, // 'A', ord 0x41
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0b00011111, // 'B', ord 0x42
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0b01001110, // 'C', ord 0x43
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0b00111101, // 'D', ord 0x44
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0b01001111, // 'E', ord 0x45
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0b01000111, // 'F', ord 0x46
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0b01011110, // 'G', ord 0x47
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0b00110111, // 'H', ord 0x48
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0b00110000, // 'I', ord 0x49
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0b00111100, // 'J', ord 0x4A
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TM1637_UNKNOWN_CHAR, // 'K', ord 0x4B
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0b00001110, // 'L', ord 0x4C
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TM1637_UNKNOWN_CHAR, // 'M', ord 0x4D
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0b00010101, // 'N', ord 0x4E
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0b01111110, // 'O', ord 0x4F
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0b01100111, // 'P', ord 0x50
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0b11111110, // 'Q', ord 0x51
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0b00000101, // 'R', ord 0x52
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0b01011011, // 'S', ord 0x53
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0b00000111, // 'T', ord 0x54
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0b00111110, // 'U', ord 0x55
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0b00111110, // 'V', ord 0x56
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0b00111111, // 'W', ord 0x57
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TM1637_UNKNOWN_CHAR, // 'X', ord 0x58
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0b00100111, // 'Y', ord 0x59
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0b01101101, // 'Z', ord 0x5A
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0b01001110, // '[', ord 0x5B
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TM1637_UNKNOWN_CHAR, // '\', ord 0x5C
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0b01111000, // ']', ord 0x5D
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TM1637_UNKNOWN_CHAR, // '^', ord 0x5E
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0b00001000, // '_', ord 0x5F
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0b00100000, // '`', ord 0x60
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0b01110111, // 'a', ord 0x61
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0b00011111, // 'b', ord 0x62
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0b00001101, // 'c', ord 0x63
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0b00111101, // 'd', ord 0x64
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0b01001111, // 'e', ord 0x65
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0b01000111, // 'f', ord 0x66
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0b01011110, // 'g', ord 0x67
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0b00010111, // 'h', ord 0x68
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0b00010000, // 'i', ord 0x69
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0b00111100, // 'j', ord 0x6A
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TM1637_UNKNOWN_CHAR, // 'k', ord 0x6B
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0b00001110, // 'l', ord 0x6C
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TM1637_UNKNOWN_CHAR, // 'm', ord 0x6D
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0b00010101, // 'n', ord 0x6E
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0b00011101, // 'o', ord 0x6F
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0b01100111, // 'p', ord 0x70
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TM1637_UNKNOWN_CHAR, // 'q', ord 0x71
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0b00000101, // 'r', ord 0x72
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0b01011011, // 's', ord 0x73
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0b00000111, // 't', ord 0x74
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0b00011100, // 'u', ord 0x75
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0b00011100, // 'v', ord 0x76
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TM1637_UNKNOWN_CHAR, // 'w', ord 0x77
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TM1637_UNKNOWN_CHAR, // 'x', ord 0x78
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0b00100111, // 'y', ord 0x79
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TM1637_UNKNOWN_CHAR, // 'z', ord 0x7A
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0b00110001, // '{', ord 0x7B
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0b00000110, // '|', ord 0x7C
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0b00000111, // '}', ord 0x7D
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0b01100011, // '~', ord 0x7E (degree symbol)
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};
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void TM1637Display::setup() {
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ESP_LOGCONFIG(TAG, "Setting up TM1637...");
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this->clk_pin_->setup(); // OUTPUT
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this->clk_pin_->digital_write(false); // LOW
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this->dio_pin_->setup(); // OUTPUT
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this->dio_pin_->digital_write(false); // LOW
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this->display();
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}
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void TM1637Display::dump_config() {
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ESP_LOGCONFIG(TAG, "TM1637:");
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ESP_LOGCONFIG(TAG, " INTENSITY: %d", this->intensity_);
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LOG_PIN(" CLK Pin: ", this->clk_pin_);
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LOG_PIN(" DIO Pin: ", this->dio_pin_);
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LOG_UPDATE_INTERVAL(this);
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}
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void TM1637Display::update() {
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for (uint8_t &i : this->buffer_)
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i = 0;
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if (this->writer_.has_value())
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(*this->writer_)(*this);
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this->display();
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}
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float TM1637Display::get_setup_priority() const { return setup_priority::PROCESSOR; }
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void TM1637Display::bit_delay_() { delayMicroseconds(100); }
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void TM1637Display::start_() {
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this->dio_pin_->pin_mode(OUTPUT);
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this->bit_delay_();
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}
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void TM1637Display::stop_() {
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this->dio_pin_->pin_mode(OUTPUT);
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bit_delay_();
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this->clk_pin_->pin_mode(INPUT);
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bit_delay_();
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this->dio_pin_->pin_mode(INPUT);
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bit_delay_();
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}
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void TM1637Display::display() {
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ESP_LOGVV(TAG, "Display %02X%02X%02X%02X", buffer_[0], buffer_[1], buffer_[2], buffer_[3]);
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// Write COMM1
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this->start_();
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this->send_byte_(TM1637_I2C_COMM1);
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this->stop_();
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// Write COMM2 + first digit address
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this->start_();
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this->send_byte_(TM1637_I2C_COMM2);
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// Write the data bytes
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for (auto b : this->buffer_) {
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this->send_byte_(b);
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}
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this->stop_();
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// Write COMM3 + brightness
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this->start_();
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this->send_byte_(TM1637_I2C_COMM3 + ((this->intensity_ & 0x7) | 0x08));
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this->stop_();
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}
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bool TM1637Display::send_byte_(uint8_t b) {
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uint8_t data = b;
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// 8 Data Bits
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for (uint8_t i = 0; i < 8; i++) {
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// CLK low
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this->clk_pin_->pin_mode(OUTPUT);
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this->bit_delay_();
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// Set data bit
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if (data & 0x01)
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this->dio_pin_->pin_mode(INPUT);
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else
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this->dio_pin_->pin_mode(OUTPUT);
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this->bit_delay_();
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// CLK high
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this->clk_pin_->pin_mode(INPUT);
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this->bit_delay_();
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data = data >> 1;
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}
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// Wait for acknowledge
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// CLK to zero
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this->clk_pin_->pin_mode(OUTPUT);
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this->dio_pin_->pin_mode(INPUT);
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this->bit_delay_();
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// CLK to high
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this->clk_pin_->pin_mode(INPUT);
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this->bit_delay_();
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uint8_t ack = this->dio_pin_->digital_read();
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if (ack == 0) {
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this->dio_pin_->pin_mode(OUTPUT);
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}
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this->bit_delay_();
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this->clk_pin_->pin_mode(OUTPUT);
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this->bit_delay_();
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return ack;
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}
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uint8_t TM1637Display::print(uint8_t start_pos, const char *str) {
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ESP_LOGV(TAG, "Print at %d: %s", start_pos, str);
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uint8_t pos = start_pos;
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for (; *str != '\0'; str++) {
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uint8_t data = TM1637_UNKNOWN_CHAR;
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if (*str >= ' ' && *str <= '~')
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data = pgm_read_byte(&TM1637_ASCII_TO_RAW[*str - ' ']);
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if (data == TM1637_UNKNOWN_CHAR) {
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ESP_LOGW(TAG, "Encountered character '%c' with no TM1637 representation while translating string!", *str);
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}
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// Remap segments, for compatibility with MAX7219 segment definition which is
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// XABCDEFG, but TM1637 is // XGFEDCBA
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data = ((data & 0x80) ? 0x80 : 0) | // no move X
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((data & 0x40) ? 0x1 : 0) | // A
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((data & 0x20) ? 0x2 : 0) | // B
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((data & 0x10) ? 0x4 : 0) | // C
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((data & 0x8) ? 0x8 : 0) | // D
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((data & 0x4) ? 0x10 : 0) | // E
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((data & 0x2) ? 0x20 : 0) | // F
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((data & 0x1) ? 0x40 : 0); // G
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if (*str == '.') {
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if (pos != start_pos)
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pos--;
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this->buffer_[pos] |= 0b10000000;
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} else {
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if (pos >= 6) {
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ESP_LOGE(TAG, "String is too long for the display!");
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break;
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}
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this->buffer_[pos] = data;
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}
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pos++;
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}
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return pos - start_pos;
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}
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uint8_t TM1637Display::print(const char *str) { return this->print(0, str); }
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uint8_t TM1637Display::printf(uint8_t pos, const char *format, ...) {
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va_list arg;
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va_start(arg, format);
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char buffer[64];
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int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
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va_end(arg);
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if (ret > 0)
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return this->print(pos, buffer);
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return 0;
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}
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uint8_t TM1637Display::printf(const char *format, ...) {
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va_list arg;
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va_start(arg, format);
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char buffer[64];
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int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
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va_end(arg);
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if (ret > 0)
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return this->print(buffer);
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return 0;
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}
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#ifdef USE_TIME
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uint8_t TM1637Display::strftime(uint8_t pos, const char *format, time::ESPTime time) {
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char buffer[64];
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size_t ret = time.strftime(buffer, sizeof(buffer), format);
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if (ret > 0)
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return this->print(pos, buffer);
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return 0;
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}
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uint8_t TM1637Display::strftime(const char *format, time::ESPTime time) { return this->strftime(0, format, time); }
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#endif
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} // namespace tm1637
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} // namespace esphome
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