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Add UART multiplexer and INA226 monitoring

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This commit is contained in:
Taras Syvash
2025-12-13 13:38:22 +02:00
parent 5b4691dc53
commit de959b9a8b
9 changed files with 700 additions and 7 deletions
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233
main/uart_mux.c Normal file
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#include "uart_mux.h"
#include <string.h>
#include "dcdc_controller.h"
#include "driver/gpio.h"
#include "driver/uart.h"
#include "esp_check.h"
#include "esp_log.h"
#include "esp_timer.h"
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
#include "freertos/task.h"
#include "sdkconfig.h"
#ifndef CONFIG_WATCH_UART_MUX_CHANNELS
#define CONFIG_WATCH_UART_MUX_CHANNELS 5
#endif
#ifndef CONFIG_WATCH_UART_HEARTBEAT_TIMEOUT_SEC
#define CONFIG_WATCH_UART_HEARTBEAT_TIMEOUT_SEC 60
#endif
#if CONFIG_WATCH_UART_MUX_ENABLED
#define UART_MUX_MAX_CHANNELS CONFIG_WATCH_UART_MUX_CHANNELS
static const char *TAG = "uart_mux";
static const gpio_num_t s_select_pins[3] = {
CONFIG_WATCH_UART_MUX_SEL_A0,
CONFIG_WATCH_UART_MUX_SEL_A1,
CONFIG_WATCH_UART_MUX_SEL_A2,
};
static SemaphoreHandle_t s_mutex;
static size_t s_active_channel = SIZE_MAX;
static bool s_initialized;
static int64_t s_last_heartbeat_us[UART_MUX_MAX_CHANNELS];
static TaskHandle_t s_watchdog_task;
static esp_err_t uart_mux_select_locked(size_t channel)
{
if (channel >= UART_MUX_MAX_CHANNELS) {
return ESP_ERR_INVALID_ARG;
}
if (channel == s_active_channel) {
return ESP_OK;
}
for (int bit = 0; bit < 3; ++bit) {
int level = (channel >> bit) & 0x1;
ESP_RETURN_ON_ERROR(gpio_set_level(s_select_pins[bit], level), TAG,
"GPIO set failed");
}
s_active_channel = channel;
s_last_heartbeat_us[channel] = esp_timer_get_time();
return ESP_OK;
}
static void uart_mux_watchdog_task(void *arg)
{
const TickType_t poll_interval = pdMS_TO_TICKS(1000);
const TickType_t read_timeout = pdMS_TO_TICKS(10);
const int64_t timeout_us = (int64_t)CONFIG_WATCH_UART_HEARTBEAT_TIMEOUT_SEC * 1000000LL;
uint8_t buffer[CONFIG_WATCH_UART_MUX_DEFAULT_READ_LEN];
while (true) {
vTaskDelay(poll_interval);
int64_t now = esp_timer_get_time();
for (size_t ch = 0; ch < UART_MUX_MAX_CHANNELS; ++ch) {
if (xSemaphoreTake(s_mutex, pdMS_TO_TICKS(20)) == pdTRUE) {
if (uart_mux_select_locked(ch) == ESP_OK) {
int read = uart_read_bytes(CONFIG_WATCH_UART_PORT,
buffer,
sizeof(buffer),
read_timeout);
if (read > 0) {
s_last_heartbeat_us[ch] = now;
}
}
xSemaphoreGive(s_mutex);
}
if (dcdc_get_state(ch) && s_last_heartbeat_us[ch] > 0 &&
(now - s_last_heartbeat_us[ch]) > timeout_us) {
ESP_LOGW(TAG, "Heartbeat каналу %u втрачено, перезавантаження...", (unsigned)ch);
dcdc_disable(ch);
vTaskDelay(pdMS_TO_TICKS(2000));
dcdc_enable(ch);
s_last_heartbeat_us[ch] = esp_timer_get_time();
}
}
}
}
#endif // CONFIG_WATCH_UART_MUX_ENABLED
esp_err_t uart_mux_init(void)
{
#if !CONFIG_WATCH_UART_MUX_ENABLED
return ESP_ERR_NOT_SUPPORTED;
#else
if (s_initialized) {
return ESP_OK;
}
gpio_config_t io_conf = {
.intr_type = GPIO_INTR_DISABLE,
.mode = GPIO_MODE_OUTPUT,
.pull_down_en = GPIO_PULLDOWN_DISABLE,
.pull_up_en = GPIO_PULLUP_DISABLE,
.pin_bit_mask = 0,
};
for (int i = 0; i < 3; ++i) {
io_conf.pin_bit_mask = 1ULL << s_select_pins[i];
ESP_RETURN_ON_ERROR(gpio_config(&io_conf), TAG, "GPIO config failed");
ESP_RETURN_ON_ERROR(gpio_set_level(s_select_pins[i], 0), TAG, "GPIO init level failed");
}
s_active_channel = 0;
uart_config_t uart_cfg = {
.baud_rate = CONFIG_WATCH_UART_BAUD,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
ESP_RETURN_ON_ERROR(uart_param_config(CONFIG_WATCH_UART_PORT, &uart_cfg), TAG, "UART config failed");
ESP_RETURN_ON_ERROR(uart_set_pin(CONFIG_WATCH_UART_PORT,
CONFIG_WATCH_UART_TX_GPIO,
CONFIG_WATCH_UART_RX_GPIO,
UART_PIN_NO_CHANGE,
UART_PIN_NO_CHANGE),
TAG, "UART pin assign failed");
ESP_RETURN_ON_ERROR(uart_driver_install(CONFIG_WATCH_UART_PORT,
CONFIG_WATCH_UART_MUX_DEFAULT_READ_LEN * 2,
CONFIG_WATCH_UART_MUX_DEFAULT_READ_LEN * 2,
0, NULL, 0),
TAG, "UART driver install failed");
s_mutex = xSemaphoreCreateMutex();
ESP_RETURN_ON_FALSE(s_mutex, ESP_ERR_NO_MEM, TAG, "mutex alloc failed");
int64_t now = esp_timer_get_time();
for (size_t ch = 0; ch < UART_MUX_MAX_CHANNELS; ++ch) {
s_last_heartbeat_us[ch] = now;
}
if (xTaskCreate(uart_mux_watchdog_task, "uart_mux_wd", 4096, NULL, 5, &s_watchdog_task) != pdPASS) {
return ESP_ERR_NO_MEM;
}
s_initialized = true;
ESP_LOGI(TAG, "UART мультиплексор активовано, каналів: %d", UART_MUX_MAX_CHANNELS);
return ESP_OK;
#endif
}
bool uart_mux_ready(void)
{
#if CONFIG_WATCH_UART_MUX_ENABLED
return s_initialized;
#else
return false;
#endif
}
size_t uart_mux_channel_count(void)
{
return CONFIG_WATCH_UART_MUX_CHANNELS;
}
esp_err_t uart_mux_write(size_t channel, const uint8_t *data, size_t length, TickType_t timeout)
{
#if !CONFIG_WATCH_UART_MUX_ENABLED
return ESP_ERR_NOT_SUPPORTED;
#else
if (!s_initialized) {
return ESP_ERR_INVALID_STATE;
}
if (channel >= UART_MUX_MAX_CHANNELS) {
return ESP_ERR_INVALID_ARG;
}
if (!data || length == 0) {
return ESP_OK;
}
if (xSemaphoreTake(s_mutex, timeout) != pdTRUE) {
return ESP_ERR_TIMEOUT;
}
esp_err_t err = uart_mux_select_locked(channel);
if (err == ESP_OK) {
int written = uart_write_bytes(CONFIG_WATCH_UART_PORT, (const char *)data, length);
if (written < 0 || (size_t)written != length) {
err = ESP_FAIL;
}
}
xSemaphoreGive(s_mutex);
return err;
#endif
}
esp_err_t uart_mux_read(size_t channel, uint8_t *buffer, size_t buffer_size, size_t *out_length, TickType_t timeout)
{
#if !CONFIG_WATCH_UART_MUX_ENABLED
return ESP_ERR_NOT_SUPPORTED;
#else
if (!s_initialized) {
return ESP_ERR_INVALID_STATE;
}
if (channel >= UART_MUX_MAX_CHANNELS || !buffer || buffer_size == 0) {
return ESP_ERR_INVALID_ARG;
}
if (xSemaphoreTake(s_mutex, timeout) != pdTRUE) {
return ESP_ERR_TIMEOUT;
}
esp_err_t err = uart_mux_select_locked(channel);
if (err == ESP_OK) {
int read = uart_read_bytes(CONFIG_WATCH_UART_PORT, buffer, buffer_size, timeout);
if (read < 0) {
err = ESP_FAIL;
} else {
if (out_length) {
*out_length = (size_t)read;
}
if (read > 0) {
s_last_heartbeat_us[channel] = esp_timer_get_time();
}
}
}
xSemaphoreGive(s_mutex);
return err;
#endif
}