65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
#include <stdint.h>
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#include "driver/i2c_master.h"
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#include "esp_log.h"
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#include "config.h"
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// ESP32-C3 Super Mini, change this ports for other versions
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#define I2C_MASTER_SCL_IO 9
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#define I2C_MASTER_SDA_IO 8
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static const char* TAG = "I2C";
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TaskHandle_t i2c_task_handle = NULL;
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i2c_master_bus_handle_t bus_handle;
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i2c_master_dev_handle_t slave_handles[SLAVES_NUMBER];
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uint8_t slave_count = 0;
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static void register_slave(int addr) {
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i2c_device_config_t slave_dev_cfg = {
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.dev_addr_length = I2C_ADDR_BIT_LEN_7,
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.device_address = addr,
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.scl_speed_hz = 100000, // 100kHz or 400kHz
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};
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ESP_ERROR_CHECK(i2c_master_bus_add_device(bus_handle, &slave_dev_cfg, &slave_handles[slave_count]));
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slave_count++;
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}
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static void i2c_init(void) {
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i2c_master_bus_config_t i2c_mst_config = {
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.clk_source = I2C_CLK_SRC_DEFAULT,
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.i2c_port = -1,
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.scl_io_num = I2C_MASTER_SCL_IO,
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.sda_io_num = I2C_MASTER_SDA_IO,
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.glitch_ignore_cnt = 7,
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.flags.enable_internal_pullup = true,
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};
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ESP_ERROR_CHECK(i2c_new_master_bus(&i2c_mst_config, &bus_handle));
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// Add all vases adresses here:
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// TODO: move this to config.h
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register_slave(0x30);
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}
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static void i2c_read() {} //should read from i2c and if necessary call i2c_write
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static void i2c_write() {}
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void i2cTask(void *pvParameters) {
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ESP_LOGV(TAG, "Task started");
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i2c_init();
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for(;;) {
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ESP_LOGV(TAG, "Checking Wi-Fi connection...");
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//FIXME: change wifi_event_group to connectivity_event_group after merge with dev-esp32-mqtt branch
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xEventGroupWaitBits(wifi_event_group, WIFI_CONNECTED_BIT, pdFALSE, pdTRUE, portMAX_DELAY);
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if ((bits & (WIFI_CONNECTED_BIT | MQTT_CONNECTED_BIT)) == (WIFI_CONNECTED_BIT | MQTT_CONNECTED_BIT)) i2c_read();
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ESP_ERROR_CHECK(esp_task_wdt_reset());
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ESP_LOGV(TAG, "Task reset");
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vTaskDelay(pdMS_TO_TICKS(2000));
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}
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}
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