ht16k33 - Holtek HT16K33 LED Controller driver
- group ht16k33
Holtek HT16K33 LED Controller driver.
No keyscan features implemented. Tip: PWM brightness frequency depends on I2C clock.
Manufacturer link: https://www.holtek.com/productdetail/-/vg/HT16K33 Datasheet: https://www.holtek.com/documents/10179/116711/HT16K33v120.pdf
Enums
Functions
-
esp_err_t ht16k33_init_desc(i2c_dev_t *dev, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio, uint8_t addr)
Initialize the HT16K33 device descriptor.
- Parameters:
dev – [out] Device descriptor
port – I2C port number
sda_gpio – GPIO pin number for SDA
scl_gpio – GPIO pin number for SCL
addr – I2C address
- Returns:
ESP_OKon success
-
esp_err_t ht16k33_init(i2c_dev_t *dev)
Initialize HT16K33 device, reset all settings and zero chip RAM.
- Returns:
ESP_OK in case of success
-
esp_err_t ht16k33_free_desc(i2c_dev_t *dev)
Free device descriptor.
- Parameters:
dev – I2C device descriptor
- Returns:
ESP_OK to indicate success
-
esp_err_t ht16k33_set_brightness(i2c_dev_t *dev, uint8_t brightness)
Set brightness.
- Parameters:
dev – I2C device descriptor
brightness – Brighness value in 0-15 range.
- Returns:
ESP_OK to indicate success
-
esp_err_t ht16k33_display_setup(i2c_dev_t *dev, uint8_t on_flag, ht16k33_blinking_freq_t blinking)
Display setup.
ON/OFF and blinkng frequency.
- Parameters:
dev – I2C device descriptor
on_flag – On flag, 0 or 1.
blinking – Blinking frequence. Limited options. See HT16K33_BLINKING_* constants.
- Returns:
ESP_OK to indicate success
-
esp_err_t ht16k33_init_desc(i2c_dev_t *dev, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio, uint8_t addr)