274 lines
No EOL
9.8 KiB
C++
274 lines
No EOL
9.8 KiB
C++
#include "spi_74hc595_display.h"
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#include "esphome/core/hal.h"
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#include "esphome/core/helpers.h"
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#include "esphome/core/log.h"
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namespace esphome
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{
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namespace spi_74hc595_display
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{
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static const char *const TAG = "spi_74hc595_display";
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static const uint8_t SPI_74HC595_DISPLAY_UNKNOWN_CHAR = 0b11111111;
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const uint8_t SPI_74HC595_DISPLAY_ASCII_TO_RAW[95] PROGMEM = {
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//.GFEDCBA
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0b00000000, // ' ', ord 0x20
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0b10000110, // '!', ord 0x21
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0b00100010, // '"', ord 0x22
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0b00110110, // '#', ord 0x23
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0b00101101, // '$', ord 0x24
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0b01001001, // '%', ord 0x25
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0b00011011, // '&', ord 0x26
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0b00100000, // ''', ord 0x27
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0b00111001, // '(', ord 0x28
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0b00001111, // ')', ord 0x29
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0b00000001, // '*', ord 0x2A
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0b00010000, // '+', ord 0x2B
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0b00000100, // ',', ord 0x2C
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0b01000000, // '-', ord 0x2D
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0b10000000, // '.', ord 0x2E
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0b01010010, // '/', ord 0x2F
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0b00111111, // '0', ord 0x30
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0b00000110, // '1', ord 0x31
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0b01011011, // '2', ord 0x32
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0b01001111, // '3', ord 0x33
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0b01100110, // '4', ord 0x34
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0b01101101, // '5', ord 0x35
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0b01111101, // '6', ord 0x36
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0b00000111, // '7', ord 0x37
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0b01111111, // '8', ord 0x38
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0b01101111, // '9', ord 0x39
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0b00001001, // ':', ord 0x3A
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0b00001101, // ';', ord 0x3B
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0b00011000, // '<', ord 0x3C
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0b01001000, // '=', ord 0x3D
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0b00001100, // '>', ord 0x3E
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0b01010011, // '?', ord 0x3F
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0b01111011, // '@', ord 0x40
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0b01110111, // 'A', ord 0x41
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0b01111100, // 'B', ord 0x42
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0b00111001, // 'C', ord 0x43
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0b01011110, // 'D', ord 0x44
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0b01111001, // 'E', ord 0x45
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0b01110001, // 'F', ord 0x46
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0b00111101, // 'G', ord 0x47
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0b01110110, // 'H', ord 0x48
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0b00000110, // 'I', ord 0x49
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0b00011110, // 'J', ord 0x4A
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SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'K', ord 0x4B
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0b00111000, // 'L', ord 0x4C
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0b00110111, // 'M', ord 0x4D
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0b01010100, // 'N', ord 0x4E
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0b00111111, // 'O', ord 0x4F
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0b01110011, // 'P', ord 0x50
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0b10111111, // 'Q', ord 0x51
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0b01010000, // 'R', ord 0x52
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0b01101101, // 'S', ord 0x53
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0b01110000, // 'T', ord 0x54
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0b00111110, // 'U', ord 0x55
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0b00111110, // 'V', ord 0x56
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0b01111110, // 'W', ord 0x57
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SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'X', ord 0x58
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0b01110010, // 'Y', ord 0x59
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0b01011011, // 'Z', ord 0x5A
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0b00111001, // '[', ord 0x5B
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0b01100100, // '\', ord 0x5C
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0b00001111, // ']', ord 0x5D
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0b00100011, // '^', ord 0x5E
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0b00001000, // '_', ord 0x5F
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0b00000010, // '`', ord 0x60
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0b01110111, // 'a', ord 0x61
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0b01111100, // 'b', ord 0x62
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0b01011000, // 'c', ord 0x63
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0b01011110, // 'd', ord 0x64
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0b01111001, // 'e', ord 0x65
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0b01110001, // 'f', ord 0x66
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0b00111101, // 'g', ord 0x67
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0b01110100, // 'h', ord 0x68
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0b00000100, // 'i', ord 0x69
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0b00011110, // 'j', ord 0x6A
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SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'k', ord 0x6B
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0b00111000, // 'l', ord 0x6C
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0b00110111, // 'm', ord 0x6D
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0b01010100, // 'n', ord 0x6E
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0b01011100, // 'o', ord 0x6F
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0b01110011, // 'p', ord 0x70
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0b01100111, // 'q', ord 0x71
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0b01010000, // 'r', ord 0x72
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0b01101101, // 's', ord 0x73
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0b01110000, // 't', ord 0x74
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0b00011100, // 'u', ord 0x75
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0b00011100, // 'v', ord 0x76
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SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'w', ord 0x77
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SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'x', ord 0x78
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0b01110010, // 'y', ord 0x79
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SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'z', ord 0x7A
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0b01000110, // '{', ord 0x7B
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0b00110000, // '|', ord 0x7C
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0b01110000, // '}', ord 0x7D
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0b01100011, // '~', ord 0x7E (degree symbol)
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};
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const uint8_t SPI_74HC595_DISPLAY_DIGIT_MASK[8] PROGMEM = {
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(1U << 4), (1U << 5), (1U << 6), (1U << 7), (1U << 0), (1U << 1), (1U << 2), (1U << 3),
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};
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float SPI_74HC595_DISPLAYComponent::get_setup_priority() const
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{
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return setup_priority::PROCESSOR;
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}
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void SPI_74HC595_DISPLAYComponent::setup()
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{
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ESP_LOGCONFIG(TAG, "Setting up SPI_74HC595_DISPLAY...");
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this->spi_setup();
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this->buffer_ = new uint8_t[this->num_chips_ * 8]; // NOLINT
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for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
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{
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this->buffer_[i] = 0;
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}
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}
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void SPI_74HC595_DISPLAYComponent::dump_config()
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{
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ESP_LOGCONFIG(TAG, "SPI_74HC595_DISPLAY:");
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ESP_LOGCONFIG(TAG, " Number of Chips: %u", this->num_chips_);
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LOG_PIN(" CS Pin: ", this->cs_);
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LOG_UPDATE_INTERVAL(this);
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}
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void SPI_74HC595_DISPLAYComponent::display()
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{
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uint32_t delay = static_cast<uint64_t>(this->get_update_interval()) * 1000 / 8;
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for (uint8_t i = 0; i < 8; i++)
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{
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this->enable();
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for (uint8_t j = 0; j < this->num_chips_; j++)
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{
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if (reverse_)
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{
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this->send_byte_(SPI_74HC595_DISPLAY_DIGIT_MASK[i], ~buffer_[(num_chips_ - j - 1) * 8 + i]);
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}
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else
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{
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this->send_byte_(SPI_74HC595_DISPLAY_DIGIT_MASK[i], ~buffer_[j * 8 + i]);
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}
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}
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this->disable();
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delay_microseconds_safe(delay);
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}
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// zero out everything to have a somewhat uniform duty cycle for all digits
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this->enable();
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for (uint8_t j = 0; j < this->num_chips_; j++)
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{
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this->send_byte_(0, 0);
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}
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this->disable();
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}
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void SPI_74HC595_DISPLAYComponent::send_byte_(uint8_t a_digit, uint8_t data)
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{
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this->write_byte(data);
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this->write_byte(a_digit);
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}
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void SPI_74HC595_DISPLAYComponent::update()
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{
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for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
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this->buffer_[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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uint8_t SPI_74HC595_DISPLAYComponent::print(uint8_t start_pos, const char *str)
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{
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uint8_t pos = start_pos;
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for (; *str != '\0'; str++)
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{
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uint8_t data = SPI_74HC595_DISPLAY_UNKNOWN_CHAR;
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if (*str >= ' ' && *str <= '~')
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data = progmem_read_byte(&SPI_74HC595_DISPLAY_ASCII_TO_RAW[*str - ' ']);
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if (data == SPI_74HC595_DISPLAY_UNKNOWN_CHAR)
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{
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ESP_LOGW(TAG,
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"Encountered character '%c' with no SPI_74HC595_DISPLAY representation while translating string!",
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*str);
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}
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if (*str == '.')
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{
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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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}
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else
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{
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if (pos >= this->num_chips_ * 8)
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{
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ESP_LOGE(TAG, "SPI_74HC595_DISPLAY 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 SPI_74HC595_DISPLAYComponent::print(const char *str)
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{
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return this->print(0, str);
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}
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uint8_t SPI_74HC595_DISPLAYComponent::printf(uint8_t pos, const char *format, ...)
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{
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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 SPI_74HC595_DISPLAYComponent::printf(const char *format, ...)
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{
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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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void SPI_74HC595_DISPLAYComponent::set_writer(spi_74hc595_display_writer_t &&writer)
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{
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this->writer_ = writer;
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}
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void SPI_74HC595_DISPLAYComponent::set_num_chips(uint8_t num_chips)
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{
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this->num_chips_ = num_chips;
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}
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uint8_t SPI_74HC595_DISPLAYComponent::strftime(uint8_t pos, const char *format, ESPTime time)
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{
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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 SPI_74HC595_DISPLAYComponent::strftime(const char *format, ESPTime time)
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{
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return this->strftime(0, format, time);
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}
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} // namespace spi_74hc595_display
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} // namespace esphome
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