63 lines
2.3 KiB
Markdown
63 lines
2.3 KiB
Markdown
# ESP32 ESP-IDF and ESP8266 RTOS SDK component for CD74HC4067 16-channel analog multiplexer/demultiplexer
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## Tested on
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1. [ESP8266 RTOS_SDK v3.4](https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/index.html#)
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2. [ESP32 ESP-IDF v5.4](https://docs.espressif.com/projects/esp-idf/en/release-v5.4/esp32/index.html)
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## Features
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1. Just an electronic galette switch between one of the 16 multiplexer GPIO and one ESP GPIO.
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2. Support of all standard operations (digital read/write, interrupt, ADC, PWM, etc).
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## Attention
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1. EN GPIO on CD74HC4067 must be connected to ESP.
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## Using
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In an existing project, run the following command to install the components:
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```text
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cd ../your_project/components
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git clone http://git.zh.com.ru/alexey.zholtikov/zh_cd74hc4067
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```
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In the application, add the component:
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```c
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#include "zh_cd74hc4067.h"
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```
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## Examples
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Digital read and write:
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```c
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#include "zh_cd74hc4067.h"
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void app_main(void)
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{
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esp_log_level_set("zh_cd74hc4067", ESP_LOG_NONE); // For ESP8266 first enable "Component config -> Log output -> Enable log set level" via menuconfig.
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gpio_config_t pin_config = {
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.pin_bit_mask = (1ULL << GPIO_NUM_4)}; // Set control GPIO on ESP.
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gpio_config(&pin_config);
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zh_cd74hc4067_init_config_t init_config = {
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.control_gpio_number = GPIO_NUM_4,
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.en_gpio_number = GPIO_NUM_18,
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.s0_gpio_number = GPIO_NUM_19,
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.s1_gpio_number = GPIO_NUM_20,
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.s2_gpio_number = GPIO_NUM_21,
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.s3_gpio_number = GPIO_NUM_22,
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};
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zh_cd74hc4067_init(&init_config);
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gpio_set_direction(zh_cd74hc4067_pin(), GPIO_MODE_OUTPUT); // Set control GPIO on ESP to output.
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gpio_set_level(zh_cd74hc4067_set(10), 1); // Connect 10 GPIO on CD74HC4067 and set it to HIGH.
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zh_cd74hc4067_set(12); // Connect 12 GPIO on CD74HC4067.
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gpio_set_direction(zh_cd74hc4067_pin(), GPIO_MODE_INPUT); // Set control GPIO on ESP to input.
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bool level = gpio_get_level(zh_cd74hc4067_set(11)); // Connect 11 GPIO on CD74HC4067 and get it status.
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level = gpio_get_level(zh_cd74hc4067_pin()); // Get status of currently connected GPIO on CD74HC4067.
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uint8_t gpio = zh_cd74hc4067_get(); // Get currently connected GPIO number on CD74HC4067.
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}
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```
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