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MAX7219 - Update intensity (#5477)

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Clyde Stubbs 2023-10-04 12:15:44 +11:00 committed by GitHub
parent 506c2ba6c7
commit 4e8cba49f1
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 13 additions and 2 deletions
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12
esphome/components/max7219/max7219.cpp
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@ -164,6 +164,10 @@ void MAX7219Component::send_to_all_(uint8_t a_register, uint8_t data) {
this->disable(); this->disable();
} }
void MAX7219Component::update() { void MAX7219Component::update() {
if (this->intensity_changed_) {
this->send_to_all_(MAX7219_REGISTER_INTENSITY, this->intensity_);
this->intensity_changed_ = false;
}
for (uint8_t i = 0; i < this->num_chips_ * 8; i++) for (uint8_t i = 0; i < this->num_chips_ * 8; i++)
this->buffer_[i] = 0; this->buffer_[i] = 0;
if (this->writer_.has_value()) if (this->writer_.has_value())
@ -217,7 +221,13 @@ uint8_t MAX7219Component::printf(const char *format, ...) {
return 0; return 0;
} }
void MAX7219Component::set_writer(max7219_writer_t &&writer) { this->writer_ = writer; } void MAX7219Component::set_writer(max7219_writer_t &&writer) { this->writer_ = writer; }
void MAX7219Component::set_intensity(uint8_t intensity) { this->intensity_ = intensity; } void MAX7219Component::set_intensity(uint8_t intensity) {
intensity &= 0xF;
if (intensity != this->intensity_) {
this->intensity_changed_ = true;
this->intensity_ = intensity;
}
}
void MAX7219Component::set_num_chips(uint8_t num_chips) { this->num_chips_ = num_chips; } void MAX7219Component::set_num_chips(uint8_t num_chips) { this->num_chips_ = num_chips; }
uint8_t MAX7219Component::strftime(uint8_t pos, const char *format, ESPTime time) { uint8_t MAX7219Component::strftime(uint8_t pos, const char *format, ESPTime time) {

3
esphome/components/max7219/max7219.h
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@ -52,7 +52,8 @@ class MAX7219Component : public PollingComponent,
void send_byte_(uint8_t a_register, uint8_t data); void send_byte_(uint8_t a_register, uint8_t data);
void send_to_all_(uint8_t a_register, uint8_t data); void send_to_all_(uint8_t a_register, uint8_t data);
uint8_t intensity_{15}; /// Intensity of the display from 0 to 15 (most) uint8_t intensity_{15}; // Intensity of the display from 0 to 15 (most)
bool intensity_changed_{}; // True if we need to re-send the intensity
uint8_t num_chips_{1}; uint8_t num_chips_{1};
uint8_t *buffer_; uint8_t *buffer_;
bool reverse_{false}; bool reverse_{false};