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20
Readme.md
View file

@ -6,24 +6,14 @@ by SN74HC595 shift registers.
## Hardware
Connect the shift registers like this, or adapt the pin config as needed:
- Data input (DIO) to ESP:
- GPIO23 (first display),
- GPIO19 (second display),
- GPIO22 (third display),
- GPIO21 (fourth display)
- Shift clock input (SCK) to ESP GPIO18 (all displays)
- Latch / register clock input (RCK) to ESP GPIO5 (all display)
- Data input (DIO) to ESP GPIO19
- Shift clock input (SCK) to ESP GPIO18
- Latch / register clock input (RCK) to ESP GPIO5
Keep in mind that the ESP32 is a 3.3V device when connecting to a 5V display. The shift registers should handle the 3.3V
signals from the ESP, annd in some cases, 3.3V can also be used to power the displays at a lower brightness.
Keep in mind that the ESP32 is a 3.3V device when connecting to a 5V display.
## Setup
> Note: the QSPI driver in esphome is (as of 2024-01-28) not yet in the released package.
> Install a suitable version directly from github with:
> `pip install "esphome @ git+https://github.com/esphome/esphome@1fef769496ed89c0062d8e70f5964b8318ba4550"`
Set the board type in the YAML (default should also work on most ESP32 devices)
Adapt the config as needed for the fallback AP and if wanted, api key.
Create a `secrets.yaml` containing this:
@ -45,4 +35,4 @@ The driver in `components/` is directly based on the existing MAX7219 driver in
subject to the GPLv3 and MIT licenses, as outlined in the LICENSE document (also copied from ESPHome).
## Open Issues
The actual segment mapping is not tested well, due to missing hardware.

0
components/qspi_74hc595_4x_display/__init__.py
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34
components/qspi_74hc595_4x_display/display.py
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@ -1,34 +0,0 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import display, spi
from esphome.const import CONF_ID, CONF_INTENSITY, CONF_LAMBDA, CONF_NUM_CHIPS
DEPENDENCIES = ["spi"]
qspi_74hc595_4x_display_ns = cg.esphome_ns.namespace("qspi_74hc595_4x_display")
QSPI_74HC595_4X_DISPLAYComponent = qspi_74hc595_4x_display_ns.class_(
"QSPI_74HC595_4X_DISPLAYComponent", cg.PollingComponent, spi.SPIDevice
)
QSPI_74HC595_4X_DISPLAYComponentRef = QSPI_74HC595_4X_DISPLAYComponent.operator("ref")
CONFIG_SCHEMA = (
display.BASIC_DISPLAY_SCHEMA.extend(
{
cv.GenerateID(): cv.declare_id(QSPI_74HC595_4X_DISPLAYComponent),
}
)
.extend(cv.polling_component_schema("1s"))
.extend(spi.spi_device_schema(quad=True))
)
async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await spi.register_spi_device(var, config)
await display.register_display(var, config)
if CONF_LAMBDA in config:
lambda_ = await cg.process_lambda(
config[CONF_LAMBDA], [(QSPI_74HC595_4X_DISPLAYComponentRef, "it")], return_type=cg.void
)
cg.add(var.set_writer(lambda_))

265
components/qspi_74hc595_4x_display/qspi_74hc595_4x_display.cpp
View file

@ -1,265 +0,0 @@
#include "qspi_74hc595_4x_display.h"
#include "esphome/core/hal.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
namespace esphome
{
namespace qspi_74hc595_4x_display
{
static const char *const TAG = "qspi_74hc595_4x_display";
static const uint32_t QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR = 0x11111111;
static const uint32_t QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW[95] = {
// BADCFE.G
// 0xBADCFE.G
0x00000000, // ' ', ord 0x20
0x10010010, // '!', ord 0x21
0x10001000, // '"', ord 0x22
0x10011100, // '#', ord 0x23
0x01111000, // '$', ord 0x24
0x01100001, // '%', ord 0x25
0x11100100, // '&', ord 0x26
0x00001000, // ''', ord 0x27
0x01101100, // '(', ord 0x28
0x11110000, // ')', ord 0x29
0x01000000, // '*', ord 0x2A
0x00000100, // '+', ord 0x2B
0x00010000, // ',', ord 0x2C
0x00000001, // '-', ord 0x2D
0x00000010, // '.', ord 0x2E
0x10000101, // '/', ord 0x2F
0x11111100, // '0', ord 0x30
0x10010000, // '1', ord 0x31
0x11100101, // '2', ord 0x32
0x11110001, // '3', ord 0x33
0x10011001, // '4', ord 0x34
0x01111001, // '5', ord 0x35
0x01111101, // '6', ord 0x36
0x11010000, // '7', ord 0x37
0x11111101, // '8', ord 0x38
0x11111001, // '9', ord 0x39
0x01100000, // ':', ord 0x3A
0x01110000, // ';', ord 0x3B
0x00100100, // '<', ord 0x3C
0x00100001, // '=', ord 0x3D
0x00110000, // '>', ord 0x3E
0x11000101, // '?', ord 0x3F
0x11101101, // '@', ord 0x40
0x11011101, // 'A', ord 0x41
0x00111101, // 'B', ord 0x42
0x01101100, // 'C', ord 0x43
0x10110101, // 'D', ord 0x44
0x01101101, // 'E', ord 0x45
0x01001101, // 'F', ord 0x46
0x01111100, // 'G', ord 0x47
0x10011101, // 'H', ord 0x48
0x10010000, // 'I', ord 0x49
0x10110100, // 'J', ord 0x4A
QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR, // 'K', ord 0x4B
0x00101100, // 'L', ord 0x4C
0x11011100, // 'M', ord 0x4D
0x00010101, // 'N', ord 0x4E
0x11111100, // 'O', ord 0x4F
0x11001101, // 'P', ord 0x50
0x11111110, // 'Q', ord 0x51
0x00000101, // 'R', ord 0x52
0x01111001, // 'S', ord 0x53
0x00001101, // 'T', ord 0x54
0x10111100, // 'U', ord 0x55
0x10111100, // 'V', ord 0x56
0x10111101, // 'W', ord 0x57
QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR, // 'X', ord 0x58
0x10001101, // 'Y', ord 0x59
0x11100101, // 'Z', ord 0x5A
0x01101100, // '[', ord 0x5B
0x00011001, // '\', ord 0x5C
0x11110000, // ']', ord 0x5D
0x11001000, // '^', ord 0x5E
0x00100000, // '_', ord 0x5F
0x10000000, // '`', ord 0x60
0x11011101, // 'a', ord 0x61
0x00111101, // 'b', ord 0x62
0x00100101, // 'c', ord 0x63
0x10110101, // 'd', ord 0x64
0x01101101, // 'e', ord 0x65
0x01001101, // 'f', ord 0x66
0x01111100, // 'g', ord 0x67
0x00011101, // 'h', ord 0x68
0x00010000, // 'i', ord 0x69
0x10110100, // 'j', ord 0x6A
QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR, // 'k', ord 0x6B
0x00101100, // 'l', ord 0x6C
0x11011100, // 'm', ord 0x6D
0x00010101, // 'n', ord 0x6E
0x00110101, // 'o', ord 0x6F
0x11001101, // 'p', ord 0x70
0x11011001, // 'q', ord 0x71
0x00000101, // 'r', ord 0x72
0x01111001, // 's', ord 0x73
0x00001101, // 't', ord 0x74
0x00110100, // 'u', ord 0x75
0x00110100, // 'v', ord 0x76
QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR, // 'w', ord 0x77
QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR, // 'x', ord 0x78
0x10001101, // 'y', ord 0x79
QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR, // 'z', ord 0x7A
0x10010001, // '{', ord 0x7B
0x00001100, // '|', ord 0x7C
0x00001101, // '}', ord 0x7D
0x11001001, // '~', ord 0x7E (degree symbol)
};
static constexpr uint8_t QSPI_74HC595_4X_DISPLAY_DIGIT_MAP[8] = {2, 3, 0, 1, 6, 7, 4, 5};
static constexpr uint8_t QSPI_74HC595_4X_DISPLAY_ZEROS[32] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
float QSPI_74HC595_4X_DISPLAYComponent::get_setup_priority() const
{
return setup_priority::PROCESSOR;
}
void QSPI_74HC595_4X_DISPLAYComponent::setup()
{
ESP_LOGCONFIG(TAG, "Setting up QSPI_74HC595_4X_DISPLAY...");
this->spi_setup();
memset(this->buffer_, 0xff, sizeof(this->buffer_));
// this->buffer_[0*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['.'-' '];
// this->buffer_[1*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['*'-' '];
// this->buffer_[2*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['`'-' '];
// this->buffer_[3*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW[','-' '];
// this->buffer_[4*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['_'-' '];
// this->buffer_[5*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['+'-' '];
// this->buffer_[6*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['\''-' '];
// this->buffer_[7*2] = ~QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW['-'-' '];
for (uint8_t i = 0; i < 8; i++)
{
this->buffer_[(i * 2) + 1] = 0xF << (QSPI_74HC595_4X_DISPLAY_DIGIT_MAP[i] * 4);
}
}
void QSPI_74HC595_4X_DISPLAYComponent::dump_config()
{
ESP_LOGCONFIG(TAG, "QSPI_74HC595_4X_DISPLAY:");
LOG_PIN(" CS Pin: ", this->cs_);
LOG_UPDATE_INTERVAL(this);
}
void QSPI_74HC595_4X_DISPLAYComponent::display()
{
uint32_t delay = static_cast<uint64_t>(this->get_update_interval()) * 1000 / 8;
const uint8_t *buf_ptr = reinterpret_cast<const uint8_t *>(this->buffer_);
for (uint8_t i = 0; i < 8; i++)
{
uint32_t start = micros();
this->enable();
this->write_cmd_addr_data(0, 0, 0, 0, buf_ptr, 8, 4);
buf_ptr += 8;
this->disable();
delay_microseconds_safe(delay - (micros() - start));
}
// zero out everything to have a somewhat uniform duty cycle for all digits
this->enable();
this->write_cmd_addr_data(0, 0, 0, 0, QSPI_74HC595_4X_DISPLAY_ZEROS, 32, 4);
this->disable();
}
void QSPI_74HC595_4X_DISPLAYComponent::update()
{
for (uint8_t i = 0; i < 8; i++)
this->buffer_[i * 2] = 0xFFFFFFFF;
if (this->writer_.has_value())
(*this->writer_)(*this);
this->display();
}
uint8_t QSPI_74HC595_4X_DISPLAYComponent::print(uint8_t start_pos, const char *str)
{
uint8_t pos = start_pos;
for (; *str != '\0'; str++)
{
uint32_t data = QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR;
if (*str >= ' ' && *str <= '~')
data = QSPI_74HC595_4X_DISPLAY_ASCII_TO_RAW[*str - ' '];
if (data == QSPI_74HC595_4X_DISPLAY_UNKNOWN_CHAR)
{
ESP_LOGW(
TAG,
"Encountered character '%c' with no QSPI_74HC595_4X_DISPLAY representation while translating string!",
*str);
}
if (*str == '.')
{
if (pos != start_pos)
pos--;
this->buffer_[(pos % 8) * 2] &= ~(0x00000010 << (pos / 8));
}
else
{
if (pos >= 32)
{
ESP_LOGE(TAG, "QSPI_74HC595_4X_DISPLAY String is too long for the display!");
break;
}
this->buffer_[(pos % 8) * 2] &= ~(data << (pos / 8));
}
pos++;
}
return pos - start_pos;
}
uint8_t QSPI_74HC595_4X_DISPLAYComponent::print(const char *str)
{
return this->print(0, str);
}
uint8_t QSPI_74HC595_4X_DISPLAYComponent::printf(uint8_t pos, const char *format, ...)
{
va_list arg;
va_start(arg, format);
char buffer[64];
int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
va_end(arg);
if (ret > 0)
return this->print(pos, buffer);
return 0;
}
uint8_t QSPI_74HC595_4X_DISPLAYComponent::printf(const char *format, ...)
{
va_list arg;
va_start(arg, format);
char buffer[64];
int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
va_end(arg);
if (ret > 0)
return this->print(buffer);
return 0;
}
void QSPI_74HC595_4X_DISPLAYComponent::set_writer(qspi_74hc595_4x_display_writer_t &&writer)
{
this->writer_ = writer;
}
uint8_t QSPI_74HC595_4X_DISPLAYComponent::strftime(uint8_t pos, const char *format, ESPTime time)
{
char buffer[64];
size_t ret = time.strftime(buffer, sizeof(buffer), format);
if (ret > 0)
return this->print(pos, buffer);
return 0;
}
uint8_t QSPI_74HC595_4X_DISPLAYComponent::strftime(const char *format, ESPTime time)
{
return this->strftime(0, format, time);
}
} // namespace qspi_74hc595_4x_display
} // namespace esphome

56
components/qspi_74hc595_4x_display/qspi_74hc595_4x_display.h
View file

@ -1,56 +0,0 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/core/time.h"
#include "esphome/components/spi/spi.h"
namespace esphome {
namespace qspi_74hc595_4x_display {
class QSPI_74HC595_4X_DISPLAYComponent;
using qspi_74hc595_4x_display_writer_t = std::function<void(QSPI_74HC595_4X_DISPLAYComponent &)>;
class QSPI_74HC595_4X_DISPLAYComponent : public PollingComponent,
public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_10MHZ> {
public:
void set_writer(qspi_74hc595_4x_display_writer_t &&writer);
void setup() override;
void dump_config() override;
void update() override;
float get_setup_priority() const override;
void display();
/// Evaluate the printf-format and print the result at the given position.
uint8_t printf(uint8_t pos, const char *format, ...) __attribute__((format(printf, 3, 4)));
/// Evaluate the printf-format and print the result at position 0.
uint8_t printf(const char *format, ...) __attribute__((format(printf, 2, 3)));
/// Print `str` at the given position.
uint8_t print(uint8_t pos, const char *str);
/// Print `str` at position 0.
uint8_t print(const char *str);
/// Evaluate the strftime-format and print the result at the given position.
uint8_t strftime(uint8_t pos, const char *format, ESPTime time) __attribute__((format(strftime, 3, 0)));
/// Evaluate the strftime-format and print the result at position 0.
uint8_t strftime(const char *format, ESPTime time) __attribute__((format(strftime, 2, 0)));
protected:
void send_byte_(uint8_t a_register, uint8_t data);
void send_to_all_(uint8_t a_register, uint8_t data);
uint32_t buffer_[16]; // 8* segment+digit words
optional<qspi_74hc595_4x_display_writer_t> writer_{};
};
} // namespace qspi_74hc595_4x_display
} // namespace esphome

6
components/spi_74hc595_display/display.py
View file

@ -12,6 +12,8 @@ SPI_74HC595_DISPLAYComponent = spi_74hc595_display_ns.class_(
SPI_74HC595_DISPLAYComponentRef = SPI_74HC595_DISPLAYComponent.operator("ref")
CONF_REVERSE = "reverse"
CONF_SEGMENT_FIRST = "segment_first"
CONF_COMMON_CATHODE = "common_cathode"
CONFIG_SCHEMA = (
display.BASIC_DISPLAY_SCHEMA.extend(
@ -19,6 +21,8 @@ CONFIG_SCHEMA = (
cv.GenerateID(): cv.declare_id(SPI_74HC595_DISPLAYComponent),
cv.Optional(CONF_NUM_CHIPS, default=1): cv.int_range(min=1, max=255),
cv.Optional(CONF_REVERSE, default=False): cv.boolean,
cv.Optional(CONF_SEGMENT_FIRST, default=False): cv.boolean,
cv.Optional(CONF_COMMON_CATHODE, default=False): cv.boolean,
}
)
.extend(cv.polling_component_schema("1s"))
@ -33,6 +37,8 @@ async def to_code(config):
cg.add(var.set_num_chips(config[CONF_NUM_CHIPS]))
cg.add(var.set_reverse(config[CONF_REVERSE]))
cg.add(var.set_segment_first(config[CONF_SEGMENT_FIRST]))
cg.add(var.set_common_cathode(config[CONF_COMMON_CATHODE]))
if CONF_LAMBDA in config:
lambda_ = await cg.process_lambda(

429
components/spi_74hc595_display/spi_74hc595_display.cpp
View file

@ -1,12 +1,10 @@
#include "spi_74hc595_display.h"
#include "esphome/core/hal.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
#include "esphome/core/helpers.h"
#include "esphome/core/hal.h"
namespace esphome
{
namespace spi_74hc595_display
{
namespace esphome {
namespace spi_74hc595_display {
static const char *const TAG = "spi_74hc595_display";
@ -14,261 +12,224 @@ static const uint8_t SPI_74HC595_DISPLAY_UNKNOWN_CHAR = 0b11111111;
const uint8_t SPI_74HC595_DISPLAY_ASCII_TO_RAW[95] PROGMEM = {
//.GFEDCBA
0b00000000, // ' ', ord 0x20
0b10000110, // '!', ord 0x21
0b00100010, // '"', ord 0x22
0b00110110, // '#', ord 0x23
0b00101101, // '$', ord 0x24
0b01001001, // '%', ord 0x25
0b00011011, // '&', ord 0x26
0b00100000, // ''', ord 0x27
0b00111001, // '(', ord 0x28
0b00001111, // ')', ord 0x29
0b00000001, // '*', ord 0x2A
0b00010000, // '+', ord 0x2B
0b00000100, // ',', ord 0x2C
0b01000000, // '-', ord 0x2D
0b10000000, // '.', ord 0x2E
0b01010010, // '/', ord 0x2F
0b00111111, // '0', ord 0x30
0b00000110, // '1', ord 0x31
0b01011011, // '2', ord 0x32
0b01001111, // '3', ord 0x33
0b01100110, // '4', ord 0x34
0b01101101, // '5', ord 0x35
0b01111101, // '6', ord 0x36
0b00000111, // '7', ord 0x37
0b01111111, // '8', ord 0x38
0b01101111, // '9', ord 0x39
0b00001001, // ':', ord 0x3A
0b00001101, // ';', ord 0x3B
0b00011000, // '<', ord 0x3C
0b01001000, // '=', ord 0x3D
0b00001100, // '>', ord 0x3E
0b01010011, // '?', ord 0x3F
0b01111011, // '@', ord 0x40
0b01110111, // 'A', ord 0x41
0b01111100, // 'B', ord 0x42
0b00111001, // 'C', ord 0x43
0b01011110, // 'D', ord 0x44
0b01111001, // 'E', ord 0x45
0b01110001, // 'F', ord 0x46
0b00111101, // 'G', ord 0x47
0b01110110, // 'H', ord 0x48
0b00000110, // 'I', ord 0x49
0b00011110, // 'J', ord 0x4A
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'K', ord 0x4B
0b00111000, // 'L', ord 0x4C
0b00110111, // 'M', ord 0x4D
0b01010100, // 'N', ord 0x4E
0b00111111, // 'O', ord 0x4F
0b01110011, // 'P', ord 0x50
0b10111111, // 'Q', ord 0x51
0b01010000, // 'R', ord 0x52
0b01101101, // 'S', ord 0x53
0b01110000, // 'T', ord 0x54
0b00111110, // 'U', ord 0x55
0b00111110, // 'V', ord 0x56
0b01111110, // 'W', ord 0x57
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'X', ord 0x58
0b01110010, // 'Y', ord 0x59
0b01011011, // 'Z', ord 0x5A
0b00111001, // '[', ord 0x5B
0b01100100, // '\', ord 0x5C
0b00001111, // ']', ord 0x5D
0b00100011, // '^', ord 0x5E
0b00001000, // '_', ord 0x5F
0b00000010, // '`', ord 0x60
0b01110111, // 'a', ord 0x61
0b01111100, // 'b', ord 0x62
0b01011000, // 'c', ord 0x63
0b01011110, // 'd', ord 0x64
0b01111001, // 'e', ord 0x65
0b01110001, // 'f', ord 0x66
0b00111101, // 'g', ord 0x67
0b01110100, // 'h', ord 0x68
0b00000100, // 'i', ord 0x69
0b00011110, // 'j', ord 0x6A
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'k', ord 0x6B
0b00111000, // 'l', ord 0x6C
0b00110111, // 'm', ord 0x6D
0b01010100, // 'n', ord 0x6E
0b01011100, // 'o', ord 0x6F
0b01110011, // 'p', ord 0x70
0b01100111, // 'q', ord 0x71
0b01010000, // 'r', ord 0x72
0b01101101, // 's', ord 0x73
0b01110000, // 't', ord 0x74
0b00011100, // 'u', ord 0x75
0b00011100, // 'v', ord 0x76
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'w', ord 0x77
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'x', ord 0x78
0b01110010, // 'y', ord 0x79
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'z', ord 0x7A
0b01000110, // '{', ord 0x7B
0b00110000, // '|', ord 0x7C
0b01110000, // '}', ord 0x7D
0b01100011, // '~', ord 0x7E (degree symbol)
0b00000000, // ' ', ord 0x20
0b10000110, // '!', ord 0x21
0b00100010, // '"', ord 0x22
0b00110110, // '#', ord 0x23
0b00101101, // '$', ord 0x24
0b01001001, // '%', ord 0x25
0b00011011, // '&', ord 0x26
0b00100000, // ''', ord 0x27
0b00111001, // '(', ord 0x28
0b00001111, // ')', ord 0x29
0b00000001, // '*', ord 0x2A
0b00010000, // '+', ord 0x2B
0b00000100, // ',', ord 0x2C
0b01000000, // '-', ord 0x2D
0b10000000, // '.', ord 0x2E
0b01010010, // '/', ord 0x2F
0b00111111, // '0', ord 0x30
0b00000110, // '1', ord 0x31
0b01011011, // '2', ord 0x32
0b01001111, // '3', ord 0x33
0b01100110, // '4', ord 0x34
0b01101101, // '5', ord 0x35
0b01111101, // '6', ord 0x36
0b00000111, // '7', ord 0x37
0b01111111, // '8', ord 0x38
0b01101111, // '9', ord 0x39
0b00001001, // ':', ord 0x3A
0b00001101, // ';', ord 0x3B
0b00011000, // '<', ord 0x3C
0b01001000, // '=', ord 0x3D
0b00001100, // '>', ord 0x3E
0b01010011, // '?', ord 0x3F
0b01111011, // '@', ord 0x40
0b01110111, // 'A', ord 0x41
0b01111100, // 'B', ord 0x42
0b00111001, // 'C', ord 0x43
0b01011110, // 'D', ord 0x44
0b01111001, // 'E', ord 0x45
0b01110001, // 'F', ord 0x46
0b00111101, // 'G', ord 0x47
0b01110110, // 'H', ord 0x48
0b00000110, // 'I', ord 0x49
0b00011110, // 'J', ord 0x4A
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'K', ord 0x4B
0b00111000, // 'L', ord 0x4C
0b00110111, // 'M', ord 0x4D
0b01010100, // 'N', ord 0x4E
0b00111111, // 'O', ord 0x4F
0b01110011, // 'P', ord 0x50
0b10111111, // 'Q', ord 0x51
0b01010000, // 'R', ord 0x52
0b01101101, // 'S', ord 0x53
0b01110000, // 'T', ord 0x54
0b00111110, // 'U', ord 0x55
0b00111110, // 'V', ord 0x56
0b01111110, // 'W', ord 0x57
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'X', ord 0x58
0b01110010, // 'Y', ord 0x59
0b01011011, // 'Z', ord 0x5A
0b00111001, // '[', ord 0x5B
0b01100100, // '\', ord 0x5C
0b00001111, // ']', ord 0x5D
0b00100011, // '^', ord 0x5E
0b00001000, // '_', ord 0x5F
0b00000010, // '`', ord 0x60
0b01110111, // 'a', ord 0x61
0b01111100, // 'b', ord 0x62
0b01011000, // 'c', ord 0x63
0b01011110, // 'd', ord 0x64
0b01111001, // 'e', ord 0x65
0b01110001, // 'f', ord 0x66
0b00111101, // 'g', ord 0x67
0b01110100, // 'h', ord 0x68
0b00000100, // 'i', ord 0x69
0b00011110, // 'j', ord 0x6A
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'k', ord 0x6B
0b00111000, // 'l', ord 0x6C
0b00110111, // 'm', ord 0x6D
0b01010100, // 'n', ord 0x6E
0b01011100, // 'o', ord 0x6F
0b01110011, // 'p', ord 0x70
0b01100111, // 'q', ord 0x71
0b01010000, // 'r', ord 0x72
0b01101101, // 's', ord 0x73
0b01110000, // 't', ord 0x74
0b00011100, // 'u', ord 0x75
0b00011100, // 'v', ord 0x76
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'w', ord 0x77
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'x', ord 0x78
0b01110010, // 'y', ord 0x79
SPI_74HC595_DISPLAY_UNKNOWN_CHAR, // 'z', ord 0x7A
0b01000110, // '{', ord 0x7B
0b00110000, // '|', ord 0x7C
0b01110000, // '}', ord 0x7D
0b01100011, // '~', ord 0x7E (degree symbol)
};
const uint8_t SPI_74HC595_DISPLAY_DIGIT_MASK[8] PROGMEM = {
(1U << 4), (1U << 5), (1U << 6), (1U << 7), (1U << 0), (1U << 1), (1U << 2), (1U << 3),
};
float SPI_74HC595_DISPLAYComponent::get_setup_priority() const { return setup_priority::PROCESSOR; }
float SPI_74HC595_DISPLAYComponent::get_setup_priority() const
{
return setup_priority::PROCESSOR;
void SPI_74HC595_DISPLAYComponent::setup() {
ESP_LOGCONFIG(TAG, "Setting up SPI_74HC595_DISPLAY...");
this->spi_setup();
this->buffer_ = new uint8_t[this->num_chips_ * 8]; // NOLINT
for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
this->buffer_[i] = 0;
}
void SPI_74HC595_DISPLAYComponent::setup()
{
ESP_LOGCONFIG(TAG, "Setting up SPI_74HC595_DISPLAY...");
this->spi_setup();
this->buffer_ = new uint8_t[this->num_chips_ * 8]; // NOLINT
for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
{
this->buffer_[i] = 0;
}
void SPI_74HC595_DISPLAYComponent::dump_config() {
ESP_LOGCONFIG(TAG, "SPI_74HC595_DISPLAY:");
ESP_LOGCONFIG(TAG, " Number of Chips: %u", this->num_chips_);
LOG_PIN(" CS Pin: ", this->cs_);
LOG_UPDATE_INTERVAL(this);
}
void SPI_74HC595_DISPLAYComponent::dump_config()
{
ESP_LOGCONFIG(TAG, "SPI_74HC595_DISPLAY:");
ESP_LOGCONFIG(TAG, " Number of Chips: %u", this->num_chips_);
LOG_PIN(" CS Pin: ", this->cs_);
LOG_UPDATE_INTERVAL(this);
}
void SPI_74HC595_DISPLAYComponent::display()
{
uint32_t delay = static_cast<uint64_t>(this->get_update_interval()) * 1000 / 8;
for (uint8_t i = 0; i < 8; i++)
{
this->enable();
for (uint8_t j = 0; j < this->num_chips_; j++)
{
if (reverse_)
{
this->send_byte_(SPI_74HC595_DISPLAY_DIGIT_MASK[i], ~buffer_[(num_chips_ - j - 1) * 8 + i]);
}
else
{
this->send_byte_(SPI_74HC595_DISPLAY_DIGIT_MASK[i], ~buffer_[j * 8 + i]);
}
}
this->disable();
delay_microseconds_safe(delay);
}
// zero out everything to have a somewhat uniform duty cycle for all digits
void SPI_74HC595_DISPLAYComponent::display() {
uint32_t delay = static_cast<uint64_t>(this->get_update_interval())*1000 / 8;
uint8_t flip_digit=(this->common_cathode_)?0xFF:0x00;
uint8_t flip_segment = ~flip_digit;
for (uint8_t i = 0; i < 8; i++) {
this->enable();
for (uint8_t j = 0; j < this->num_chips_; j++)
{
this->send_byte_(0, 0);
for (uint8_t j = 0; j < this->num_chips_; j++) {
if (reverse_) {
this->send_byte_((1U << i)^flip_digit, buffer_[(num_chips_ - j - 1) * 8 + i]^flip_segment);
} else {
this->send_byte_((1U << i)^flip_digit, (buffer_[j * 8 + i])^flip_segment);
}
}
this->disable();
delay_microseconds_safe(delay);
}
// zero out everything to have a somewhat uniform duty cycle for all digits
this->enable();
for (uint8_t j = 0; j < this->num_chips_; j++) {
this->send_byte_(0, 0);
}
this->disable();
}
void SPI_74HC595_DISPLAYComponent::send_byte_(uint8_t a_digit, uint8_t data)
{
void SPI_74HC595_DISPLAYComponent::send_byte_(uint8_t a_digit, uint8_t data) {
if(this->segment_first_){
this->write_byte(data);
this->write_byte(a_digit);
} else {
this->write_byte(a_digit);
this->write_byte(data);
}
}
void SPI_74HC595_DISPLAYComponent::update()
{
for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
this->buffer_[i] = 0;
if (this->writer_.has_value())
(*this->writer_)(*this);
this->display();
void SPI_74HC595_DISPLAYComponent::update() {
for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
this->buffer_[i] = 0;
if (this->writer_.has_value())
(*this->writer_)(*this);
this->display();
}
uint8_t SPI_74HC595_DISPLAYComponent::print(uint8_t start_pos, const char *str)
{
uint8_t pos = start_pos;
for (; *str != '\0'; str++)
{
uint8_t data = SPI_74HC595_DISPLAY_UNKNOWN_CHAR;
if (*str >= ' ' && *str <= '~')
data = progmem_read_byte(&SPI_74HC595_DISPLAY_ASCII_TO_RAW[*str - ' ']);
uint8_t SPI_74HC595_DISPLAYComponent::print(uint8_t start_pos, const char *str) {
uint8_t pos = start_pos;
for (; *str != '\0'; str++) {
uint8_t data = SPI_74HC595_DISPLAY_UNKNOWN_CHAR;
if (*str >= ' ' && *str <= '~')
data = progmem_read_byte(&SPI_74HC595_DISPLAY_ASCII_TO_RAW[*str - ' ']);
if (data == SPI_74HC595_DISPLAY_UNKNOWN_CHAR)
{
ESP_LOGW(TAG,
"Encountered character '%c' with no SPI_74HC595_DISPLAY representation while translating string!",
*str);
}
if (*str == '.')
{
if (pos != start_pos)
pos--;
this->buffer_[pos] |= 0b10000000;
}
else
{
if (pos >= this->num_chips_ * 8)
{
ESP_LOGE(TAG, "SPI_74HC595_DISPLAY String is too long for the display!");
break;
}
this->buffer_[pos] = data;
}
pos++;
if (data == SPI_74HC595_DISPLAY_UNKNOWN_CHAR) {
ESP_LOGW(TAG, "Encountered character '%c' with no SPI_74HC595_DISPLAY representation while translating string!", *str);
}
return pos - start_pos;
if (*str == '.') {
if (pos != start_pos)
pos--;
this->buffer_[pos] |= 0b10000000;
} else {
if (pos >= this->num_chips_ * 8) {
ESP_LOGE(TAG, "SPI_74HC595_DISPLAY String is too long for the display!");
break;
}
this->buffer_[pos] = data;
}
pos++;
}
return pos - start_pos;
}
uint8_t SPI_74HC595_DISPLAYComponent::print(const char *str)
{
return this->print(0, str);
uint8_t SPI_74HC595_DISPLAYComponent::print(const char *str) { return this->print(0, str); }
uint8_t SPI_74HC595_DISPLAYComponent::printf(uint8_t pos, const char *format, ...) {
va_list arg;
va_start(arg, format);
char buffer[64];
int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
va_end(arg);
if (ret > 0)
return this->print(pos, buffer);
return 0;
}
uint8_t SPI_74HC595_DISPLAYComponent::printf(uint8_t pos, const char *format, ...)
{
va_list arg;
va_start(arg, format);
char buffer[64];
int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
va_end(arg);
if (ret > 0)
return this->print(pos, buffer);
return 0;
uint8_t SPI_74HC595_DISPLAYComponent::printf(const char *format, ...) {
va_list arg;
va_start(arg, format);
char buffer[64];
int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
va_end(arg);
if (ret > 0)
return this->print(buffer);
return 0;
}
uint8_t SPI_74HC595_DISPLAYComponent::printf(const char *format, ...)
{
va_list arg;
va_start(arg, format);
char buffer[64];
int ret = vsnprintf(buffer, sizeof(buffer), format, arg);
va_end(arg);
if (ret > 0)
return this->print(buffer);
return 0;
}
void SPI_74HC595_DISPLAYComponent::set_writer(spi_74hc595_display_writer_t &&writer) { this->writer_ = writer; }
void SPI_74HC595_DISPLAYComponent::set_writer(spi_74hc595_display_writer_t &&writer)
{
this->writer_ = writer;
}
void SPI_74HC595_DISPLAYComponent::set_num_chips(uint8_t num_chips) { this->num_chips_ = num_chips; }
void SPI_74HC595_DISPLAYComponent::set_num_chips(uint8_t num_chips)
{
this->num_chips_ = num_chips;
uint8_t SPI_74HC595_DISPLAYComponent::strftime(uint8_t pos, const char *format, ESPTime time) {
char buffer[64];
size_t ret = time.strftime(buffer, sizeof(buffer), format);
if (ret > 0)
return this->print(pos, buffer);
return 0;
}
uint8_t SPI_74HC595_DISPLAYComponent::strftime(const char *format, ESPTime time) { return this->strftime(0, format, time); }
uint8_t SPI_74HC595_DISPLAYComponent::strftime(uint8_t pos, const char *format, ESPTime time)
{
char buffer[64];
size_t ret = time.strftime(buffer, sizeof(buffer), format);
if (ret > 0)
return this->print(pos, buffer);
return 0;
}
uint8_t SPI_74HC595_DISPLAYComponent::strftime(const char *format, ESPTime time)
{
return this->strftime(0, format, time);
}
} // namespace spi_74hc595_display
} // namespace esphome
} // namespace spi_74hc595_display
} // namespace esphome

4
components/spi_74hc595_display/spi_74hc595_display.h
View file

@ -30,6 +30,8 @@ class SPI_74HC595_DISPLAYComponent : public PollingComponent,
void set_num_chips(uint8_t num_chips);
void set_reverse(bool reverse) { this->reverse_ = reverse; };
void set_segment_first(bool segment_first) { this->segment_first_ = segment_first; };
void set_common_cathode(bool common_cathode) { this->common_cathode_ = common_cathode; };
/// Evaluate the printf-format and print the result at the given position.
uint8_t printf(uint8_t pos, const char *format, ...) __attribute__((format(printf, 3, 4)));
@ -54,6 +56,8 @@ class SPI_74HC595_DISPLAYComponent : public PollingComponent,
uint8_t num_chips_{1};
uint8_t *buffer_;
bool reverse_{false};
bool segment_first_{false};
bool common_cathode_{false};
optional<spi_74hc595_display_writer_t> writer_{};
};

158
esp32-clock-template.yaml
View file

@ -5,7 +5,7 @@ esphome:
esp32:
board: esp32dev
framework:
type: esp-idf
type: arduino
# Enable logging
logger:
@ -44,147 +44,63 @@ time:
- platform: sntp
id: sntp_time
timezone: Europe/Berlin
on_time:
- seconds: /10
then:
- logger.log:
level: INFO
format: "%2d %2d %2d %2d"
args:
- 'uint32_t(id(runtime).state/3600) - uint32_t(id(runtime).state/86400)*1440'
- 'uint32_t(id(runtime).state/60) - uint32_t(id(runtime).state/3600)*60'
- 'uint32_t(id(runtime).state) - uint32_t(id(runtime).state/60)*60'
- 'uint32_t((id(runtime).state - uint32_t(id(runtime).state))*25)'
spi:
- id: quad_spi_bus
interface: spi3
clk_pin: 18
data_pins:
- 23
- 19
- 22
- 21
clk_pin: GPIO18
mosi_pin: GPIO19
sensor:
- platform: uptime
id: runtime
update_interval: 100ms
globals:
- id: countdown_end
type: time_t
- id: uptime_start
type: time_t
number:
- platform: template
name: "Countdown set H"
id: cd_set_h
initial_value: 0
min_value: 0
max_value: 99
step: 1
optimistic: true
mode: box
- platform: template
name: "Countdown set M"
id: cd_set_m
initial_value: 0
min_value: 0
max_value: 59
step: 1
optimistic: true
mode: box
- platform: template
name: "Countdown set S"
id: cd_set_s
initial_value: 0
min_value: 0
max_value: 59
step: 1
optimistic: true
mode: box
button:
- platform: template
name: "Countdown set"
on_press:
- lambda: |-
id(countdown_end) =
id(sntp_time).timestamp_now()
+ uint32_t(id(cd_set_h).state)*3600
+ uint32_t(id(cd_set_m).state)*60
+ uint32_t(id(cd_set_s).state);
- platform: template
name: "Countdown Minutes 1m"
on_press:
- lambda: |-
id(countdown_end) = id(sntp_time).timestamp_now() + 60;
- platform: template
name: "Countdown Minutes 5m"
on_press:
- lambda: |-
id(countdown_end) = id(sntp_time).timestamp_now() + 300;
- platform: template
name: "Countdown Minutes 10m"
on_press:
- lambda: |-
id(countdown_end) = id(sntp_time).timestamp_now() + 600;
- platform: template
name: "Countdown Hours 1h"
on_press:
- lambda: |-
id(countdown_end) = id(sntp_time).timestamp_now() + 3600;
- platform: template
name: "Countdown Hours 2h"
on_press:
- lambda: |-
id(countdown_end) = id(sntp_time).timestamp_now() + 7200;
- platform: template
name: "Runtime Reset"
on_press:
- lambda: |-
id(uptime_start) = id(runtime).state;
display:
- platform: qspi_74hc595_4x_display
- platform: spi_74hc595_display
cs_pin: GPIO5
data_rate: 10MHz
update_interval: 10ms
spi_id: quad_spi_bus
data_rate: 1MHz #10MHz
num_chips: 1 #3
update_interval: 4s #16ms
common_cathode: false
segment_first: false
reverse: false
lambda: |-
static uint32_t last_micros=0;
static uint32_t clock_frames=0;
static uint32_t old_clock=0;
if(id(sntp_time).now().second!=old_clock){
last_micros = micros();
clock_frames=0;
old_clock=id(sntp_time).now().second;
} else {
clock_frames = (micros()-last_micros)/10000;
clock_frames++;
}
/////////// first display
it.printf(0, ".*`,_+'-");
//it.printf(0, ".*`,_+'-");
it.printf(0, "88888888");
//it.strftime(0, "%H%M%s", id(sntp_time).now());
//it.printf(6, "%2d", clock_frames);
/////////// second display
it.strftime(8, "%H%M%S", id(sntp_time).now());
it.printf(14, "%02d", clock_frames%100);
//it.strftime(8, "%H%M%s", id(sntp_time).now());
//it.printf(14, "%2d", clock_frames);
/*it.strftime(8, "%H%M%s", id(sntp_time).now());*/
/*it.printf(14, "%1d", 0)*/
/////////// third display
{
double delta = id(runtime).state - id(uptime_start);
uint32_t hours = delta/3600;
delta -= hours*3600;
uint32_t minutes = delta/60;
delta -= minutes*60;
uint32_t seconds = delta;
uint32_t frames = (100*delta) - (100*seconds);
it.printf(16, "%02d%02d%02d%02d", hours, minutes, seconds, frames);
}
/////////// fourth display
if (id(countdown_end) > id(sntp_time).timestamp_now()) {
time_t delta=difftime(id(countdown_end), id(sntp_time).timestamp_now());
time_t hours = delta/3600;
delta -= hours*3600;
time_t minutes = (delta)/60;
delta -= minutes*60;
time_t seconds = delta;
it.printf(24, "%02ld%02ld%02ld%02d", hours, minutes, seconds, (99-clock_frames%100));
}
/*it.printf(16, "%02d%02d%02d%02d",
uint32_t(id(runtime).state/3600) - uint32_t(id(runtime).state/86400)*1440,
uint32_t(id(runtime).state/60) - uint32_t(id(runtime).state/3600)*60,
uint32_t(id(runtime).state) - uint32_t(id(runtime).state/60)*60,
uint32_t((id(runtime).state - uint32_t(id(runtime).state))*25) );
*/
# the first display should display a test string to figure out the digit and segment map:
# digit 0: >.< character (dot segment on)