aZholtikov/zh_160x_i2c
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aZholtikov committed 2026-09-12 13:10:40 +03:00
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README.md
-4
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@@ -1,9 +1,5 @@
# ESP32 ESP-IDF component for LCD 1602A/1604A via I2C (PCF8574)
## SAST Tools
[PVS-Studio](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source) — static analyzer for C, C++, C#, and Java code.
## Features
1. Support for up to 16 LCD 160X displays on one I2C bus.
zh_160x_i2c.c
+9 -9
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@@ -81,7 +81,7 @@ static esp_err_t _zh_160x_send_data(zh_160x_i2c_handle_t *handle, uint8_t data);
*/
static esp_err_t _zh_160x_pulse(zh_160x_i2c_handle_t *handle);
esp_err_t zh_160x_init(zh_pcf8574_handle_t **expander, zh_160x_i2c_handle_t **handle, zh_160x_i2c_lcd_size_t size) // -V2008
esp_err_t zh_160x_init(zh_pcf8574_handle_t **expander, zh_160x_i2c_handle_t **handle, zh_160x_i2c_lcd_size_t size)
{
ZH_LOGI("160X initialization started.");
ZH_ERROR_CHECK(handle != NULL && expander != NULL && *expander != NULL && size < ZH_LCD_NUM_MAX, ESP_ERR_INVALID_ARG, NULL, "160X initialization failed. Invalid argument.");
@@ -114,7 +114,7 @@ esp_err_t zh_160x_lcd_clear(zh_160x_i2c_handle_t **handle)
return ESP_OK;
}
esp_err_t zh_160x_set_cursor(zh_160x_i2c_handle_t **handle, uint8_t row, uint8_t col) // -V2008
esp_err_t zh_160x_set_cursor(zh_160x_i2c_handle_t **handle, uint8_t row, uint8_t col)
{
ZH_LOGI("160X set cursor started.");
ZH_ERROR_CHECK(handle != NULL && *handle != NULL && row < (((*handle)->zh_160x_i2c_lcd_size == ZH_LCD_16X2) ? 2 : 4) && col < 16, ESP_ERR_INVALID_ARG, NULL, "160X set cursor failed. Invalid argument.");
@@ -160,7 +160,7 @@ esp_err_t zh_160x_print_float(zh_160x_i2c_handle_t **handle, float num, uint8_t
return ESP_OK;
}
esp_err_t zh_160x_print_progress_bar(zh_160x_i2c_handle_t **handle, uint8_t row, uint8_t progress) // -V2008
esp_err_t zh_160x_print_progress_bar(zh_160x_i2c_handle_t **handle, uint8_t row, uint8_t progress)
{
ZH_LOGI("160X print progress bar started.");
ZH_ERROR_CHECK(handle != NULL && *handle != NULL && row < (((*handle)->zh_160x_i2c_lcd_size == ZH_LCD_16X2) ? 2 : 4) && progress <= 100, ESP_ERR_INVALID_ARG, NULL, "160X print progress bar failed. Invalid argument.");
@@ -181,7 +181,7 @@ esp_err_t zh_160x_print_progress_bar(zh_160x_i2c_handle_t **handle, uint8_t row,
return ESP_OK;
}
esp_err_t zh_160x_clear_row(zh_160x_i2c_handle_t **handle, uint8_t row) // -V2008
esp_err_t zh_160x_clear_row(zh_160x_i2c_handle_t **handle, uint8_t row)
{
ZH_LOGI("160X clear row started.");
ZH_ERROR_CHECK(handle != NULL && *handle != NULL && row < (((*handle)->zh_160x_i2c_lcd_size == ZH_LCD_16X2) ? 2 : 4), ESP_ERR_INVALID_ARG, NULL, "160X clear row failed. Invalid argument.");
@@ -213,16 +213,16 @@ esp_err_t zh_160x_off_cursor(zh_160x_i2c_handle_t **handle)
return ESP_OK;
}
static esp_err_t _zh_160x_lcd_init(zh_160x_i2c_handle_t *handle) // -V2008
static esp_err_t _zh_160x_lcd_init(zh_160x_i2c_handle_t *handle)
{
vTaskDelay(20 / portTICK_PERIOD_MS);
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x30) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error."); // -V525
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x30) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(_zh_160x_pulse(handle) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x30) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error."); // -V525
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x30) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(_zh_160x_pulse(handle) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x30) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error."); // -V525
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x30) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(_zh_160x_pulse(handle) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x20) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error."); // -V525
ZH_ERROR_CHECK(zh_pcf8574_write(&handle->zh_pcf8574_handle, 0x20) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(_zh_160x_pulse(handle) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(_zh_160x_send_command(handle, 0x28) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");
ZH_ERROR_CHECK(_zh_160x_send_command(handle, 0x28) == ESP_OK, ESP_FAIL, NULL, "PCF8574 error.");