hx711 - Driver for HX711 24-bit ADC for weigh scales¶

group hx711

ESP-IDF driver for HX711 24-bit ADC for weigh scales.

BSD Licensed as described in the file LICENSE

Enums

enum hx711_gain_t¶

Gain/channel.

Values:

enumerator HX711_GAIN_A_128¶: Channel A, gain factor 128.

enumerator HX711_GAIN_B_32¶: Channel B, gain factor 32.

enumerator HX711_GAIN_A_64¶: Channel A, gain factor 64.

Functions

esp_err_t hx711_init(hx711_t *dev)¶

Initialize device.

Prepare GPIO pins, power up device and set gain

Return

ESP_OK on success, ESP_ERR_TIMEOUT if device not found

Parameters

dev: Device descriptor

esp_err_t hx711_power_down(hx711_t *dev, bool down)¶

Set device power up/down.

Return

ESP_OK on success

Parameters

dev: Device descriptor
down: Set device power down if true, power up otherwise

esp_err_t hx711_set_gain(hx711_t *dev, hx711_gain_t gain)¶

Set device gain + channel.

Return

ESP_OK on success, ESP_ERR_TIMEOUT if device not found

Parameters

dev: Device descriptor
gain: Gain + channel value

esp_err_t hx711_is_ready(hx711_t *dev, bool *ready)¶

Check if device ready to send data.

Return

ESP_OK on success

Parameters

dev: Device descriptor
ready: true if data ready

esp_err_t hx711_wait(hx711_t *dev, size_t timeout_ms)¶

Wait for device to become ready.

Return

ESP_OK on success

Parameters

dev: Device descriptor
timeout_ms: Maximum time to wait, milliseconds

esp_err_t hx711_read_data(hx711_t *dev, int32_t *data)¶

Read raw data from device.

Please call this function only when device is ready, otherwise communictaion errors may occur

Return

ESP_OK on success

Parameters

dev: Device descriptor
data: Raw ADC data

struct hx711_t¶: #include <hx711.h>
Device descriptor.