273 lines
7.1 KiB
C
Executable File
273 lines
7.1 KiB
C
Executable File
#include "meter_zigbee.h"
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "esp_log.h"
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#include "esp_system.h"
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#include "driver/uart.h"
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#include "driver/gpio.h"
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#include "meter_events.h"
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#define TAG "meter_zigbee"
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// UART config
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#define UART_PORT UART_NUM_2
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#define TXD_PIN GPIO_NUM_17
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#define RXD_PIN GPIO_NUM_16
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#define UART_BUF_SIZE 128
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#define RX_FRAME_SIZE 14
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// Zigbee Attribute IDs
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#define ATTR_CURRENT_L1 0x0006
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#define ATTR_CURRENT_L2 0x0007
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#define ATTR_CURRENT_L3 0x0008
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#define ATTR_VOLTAGE_L1 0x0266
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#define ATTR_CURRENT_L1_ALT 0x0267
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#define ATTR_POWER_L1 0x0268
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#define ATTR_VOLTAGE_L2 0x0269
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#define ATTR_CURRENT_L2_ALT 0x026A
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#define ATTR_POWER_L2 0x026B
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#define ATTR_VOLTAGE_L3 0x026C
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#define ATTR_CURRENT_L3_ALT 0x026D
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#define ATTR_POWER_L3 0x026E
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#define ATTR_FREQUENCY 0x0265
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#define ATTR_POWER_FACTOR 0x020F
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#define ATTR_TOTAL_ENERGY 0x0201
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#define PHASE_COUNT 3
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#define PHASE_L1 0
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#define PHASE_L2 1
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#define PHASE_L3 2
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// Internal meter state
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typedef struct
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{
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float vrms[PHASE_COUNT];
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float irms[PHASE_COUNT];
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int watt[PHASE_COUNT];
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int var[PHASE_COUNT];
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int va[PHASE_COUNT];
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float frequency;
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float power_factor;
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float total_energy;
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} meter_zigbee_data_t;
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static bool phase_updated[PHASE_COUNT] = {false, false, false};
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static meter_zigbee_data_t meter_data = {0};
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static SemaphoreHandle_t meter_mutex = NULL;
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static TaskHandle_t meter_zigbee_task = NULL;
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bool meter_zigbee_is_running(void)
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{
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return meter_zigbee_task != NULL;
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}
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static inline int32_t tuya_power16_to_signed(uint16_t p)
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{
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// Igual ao quirk multi_dp_to_power()
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if (p > 0x7FFF)
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{
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return (int32_t)((0x999A - p) * -1);
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}
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return (int32_t)p;
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}
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static void meter_zigbee_post_event(void)
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{
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meter_event_data_t evt = {
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.source = "GRID",
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.frequency = meter_data.frequency,
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.power_factor = meter_data.power_factor,
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.total_energy = meter_data.total_energy};
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memcpy(evt.vrms, meter_data.vrms, sizeof(evt.vrms));
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memcpy(evt.irms, meter_data.irms, sizeof(evt.irms));
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memcpy(evt.watt, meter_data.watt, sizeof(evt.watt));
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esp_err_t err = esp_event_post(METER_EVENT,
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METER_EVENT_DATA_READY,
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&evt,
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sizeof(evt),
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portMAX_DELAY);
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if (err != ESP_OK)
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{
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ESP_LOGW(TAG, "Falha ao emitir evento: %s", esp_err_to_name(err));
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}
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}
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static void handle_zigbee_frame(const uint8_t *buf, size_t len)
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{
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ESP_LOGD(TAG, "Received UART frame (%d bytes):", len);
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// ESP_LOG_BUFFER_HEX(TAG, buf, len);
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if (len < RX_FRAME_SIZE)
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{
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ESP_LOGW(TAG, "Invalid frame: too short (len = %d)", len);
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return;
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}
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uint16_t attr = buf[2] | (buf[3] << 8);
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uint8_t size = buf[5];
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if (size != 8)
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{
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ESP_LOGW(TAG, "Unsupported payload size: %d", size);
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return;
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}
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// payload 8 bytes começa em buf[6]
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const uint8_t *p = &buf[6];
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uint16_t volt_raw = ((uint16_t)p[0] << 8) | p[1];
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uint16_t curr_raw_u16 = ((uint16_t)p[3] << 8) | p[4]; // 2 bytes
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uint16_t pow_raw_u16 = ((uint16_t)p[6] << 8) | p[7]; // 2 bytes
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int32_t power = tuya_power16_to_signed(pow_raw_u16);
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float volt = volt_raw / 10.0f;
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float curr = curr_raw_u16 / 1000.0f;
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// Se queres “corrente com sinal”, deriva pelo sinal da potência:
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float current = (power < 0) ? -curr : curr;
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ESP_LOGD(TAG, "Attr 0x%04X: V=%.1fV I=%.3fA (signed=%+.3fA) P=%+ldW",
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attr, volt, curr, current, (long)power);
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if (xSemaphoreTake(meter_mutex, pdMS_TO_TICKS(10)) == pdTRUE)
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{
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switch (attr)
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{
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case ATTR_CURRENT_L1:
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case ATTR_CURRENT_L1_ALT:
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meter_data.irms[PHASE_L1] = current;
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meter_data.vrms[PHASE_L1] = volt;
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meter_data.watt[PHASE_L1] = (int)power;
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phase_updated[PHASE_L1] = true;
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break;
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case ATTR_CURRENT_L2:
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case ATTR_CURRENT_L2_ALT:
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meter_data.irms[PHASE_L2] = current;
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meter_data.vrms[PHASE_L2] = volt;
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meter_data.watt[PHASE_L2] = (int)power;
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phase_updated[PHASE_L2] = true;
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break;
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case ATTR_CURRENT_L3:
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case ATTR_CURRENT_L3_ALT:
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meter_data.irms[PHASE_L3] = current;
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meter_data.vrms[PHASE_L3] = volt;
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meter_data.watt[PHASE_L3] = (int)power;
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phase_updated[PHASE_L3] = true;
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break;
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case ATTR_POWER_FACTOR:
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meter_data.power_factor = 0;
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break;
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case ATTR_FREQUENCY:
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meter_data.frequency = 0;
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break;
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case ATTR_TOTAL_ENERGY:
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meter_data.total_energy = 0;
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break;
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default:
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ESP_LOGW(TAG, "Unknown attr: 0x%04X", attr);
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break;
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}
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xSemaphoreGive(meter_mutex);
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}
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// Verifica se todas as 3 fases foram atualizadas
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if (phase_updated[PHASE_L1] && phase_updated[PHASE_L2] && phase_updated[PHASE_L3])
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{
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meter_zigbee_post_event();
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memset(phase_updated, 0, sizeof(phase_updated));
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}
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}
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static void meter_zigbee_task_func(void *param)
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{
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uint8_t *buf = malloc(RX_FRAME_SIZE);
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if (!buf)
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{
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ESP_LOGE(TAG, "Failed to allocate buffer");
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vTaskDelete(NULL);
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return;
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}
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ESP_LOGI(TAG, "Zigbee meter task started");
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while (1)
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{
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int len = uart_read_bytes(UART_PORT, buf, RX_FRAME_SIZE, pdMS_TO_TICKS(5000));
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if (len == RX_FRAME_SIZE)
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{
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handle_zigbee_frame(buf, len);
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}
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else if (len == 0)
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{
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ESP_LOGD(TAG, "UART timeout with no data");
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}
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else
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{
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ESP_LOGW(TAG, "Incomplete frame received (%d bytes)", len);
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}
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}
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free(buf);
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vTaskDelete(NULL);
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}
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esp_err_t meter_zigbee_init(void)
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{
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ESP_LOGI(TAG, "Initializing Zigbee meter");
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if (!meter_mutex)
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{
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meter_mutex = xSemaphoreCreateMutex();
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if (!meter_mutex)
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return ESP_ERR_NO_MEM;
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}
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uart_config_t config = {
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.baud_rate = 115200,
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.data_bits = UART_DATA_8_BITS,
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.parity = UART_PARITY_DISABLE,
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.stop_bits = UART_STOP_BITS_1,
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.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
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.source_clk = UART_SCLK_DEFAULT};
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ESP_ERROR_CHECK(uart_param_config(UART_PORT, &config));
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ESP_ERROR_CHECK(uart_set_pin(UART_PORT, TXD_PIN, RXD_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
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ESP_ERROR_CHECK(uart_driver_install(UART_PORT, UART_BUF_SIZE * 2, 0, 0, NULL, 0));
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return ESP_OK;
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}
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esp_err_t meter_zigbee_start(void)
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{
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if (meter_zigbee_task)
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return ESP_ERR_INVALID_STATE;
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xTaskCreate(meter_zigbee_task_func, "meter_zigbee_task", 4096, NULL, 3, &meter_zigbee_task);
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return ESP_OK;
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}
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void meter_zigbee_stop(void)
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{
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if (meter_zigbee_task)
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{
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vTaskDelete(meter_zigbee_task);
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meter_zigbee_task = NULL;
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}
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uart_driver_delete(UART_PORT);
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if (meter_mutex)
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{
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vSemaphoreDelete(meter_mutex);
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meter_mutex = NULL;
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}
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} |