236 lines
8.6 KiB
C
236 lines
8.6 KiB
C
#include "serial_control.h"
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#include "usart.h"
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#include "board.h"
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// Приватные функции
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static uint32_t calculate_crc32(const uint8_t* data, uint16_t length);
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static uint16_t encode_packet(const uint8_t* payload, uint16_t payload_len, uint8_t* output, uint8_t response_code);
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static uint8_t parse_packet(const uint8_t* packet_data, uint16_t packet_len, ReceivedCommand_t* out_cmd);
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static uint8_t process_received_packet(SerialControl_t *ctx, const uint8_t* packet_data, uint16_t packet_len);
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uint8_t test_crc_invalid = 0;
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SerialControl_t serial_control;
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// Контекст для приема пакетов по UART5 (однонаправленный UART)
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static SerialControl_t serial_iso;
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volatile SC_Source_t g_sc_command_source = SC_SOURCE_UART2;
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StatusPacket_t statusPacket = {
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.SOC = 0,
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.Energy = 0,
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.RequestedVoltage = 0,
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.RequestedCurrent = 0,
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.MeasuredVoltage = 0,
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.MeasuredCurrent = 0,
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.outputEnabled = 0,
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.chargingError = 0,
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.connState = 0,
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.chargingElapsedTimeMin = 0,
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.chargingElapsedTimeSec = 0,
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.estimatedRemainingChargingTime = 0,
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.relayAC = 0,
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.relayDC = 0,
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.relayAUX = 0,
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.lockState = 0,
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.evInfoAvailable = 0,
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.psuOnline = 0,
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.tempConnector0 = 0,
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.tempConnector1 = 0,
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.tempAmbient = 0,
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.tempBatteryMax = 0,
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.tempBatteryMin = 0,
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.highestVoltageOfBatteryCell = 0,
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.batteryStatus = 0,
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.phaseVoltageAB = 0,
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.phaseVoltageBC = 0,
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.phaseVoltageCA = 0,
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};
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InfoPacket_t infoPacket = {
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.serialNumber = 0,
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.boardVersion = 0,
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.stationType = 0,
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.fw_version_major = 0,
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.fw_version_minor = 0,
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.fw_version_patch = 0,
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};
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void ReadVersion(){
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infoPacket.serialNumber = InfoBlock->serialNumber;
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infoPacket.boardVersion = InfoBlock->boardVersion;
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infoPacket.stationType = InfoBlock->stationType;
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infoPacket.fw_version_major = FW_VERSION_MAJOR;
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infoPacket.fw_version_minor = FW_VERSION_MINOR;
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infoPacket.fw_version_patch = FW_VERSION_PATCH;
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}
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// Внешняя функция обработки команд (определена в serial_handler.c)
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extern void SC_CommandHandler(ReceivedCommand_t* cmd);
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void SC_Init() {
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// Обнуляем структуру
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memset(&serial_control, 0, sizeof(SerialControl_t));
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memset(&serial_iso, 0, sizeof(serial_iso));
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}
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void SC_Task() {
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// Запуск приема в режиме прерывания с ожиданием idle
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if((huart2.RxState == HAL_UART_STATE_READY) && (serial_control.command_ready == 0)) HAL_UARTEx_ReceiveToIdle_IT(&huart2, serial_control.rx_buffer, MAX_RX_BUFFER_SIZE - 1);
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if((huart5.RxState == HAL_UART_STATE_READY)) HAL_UARTEx_ReceiveToIdle_IT(&huart5, serial_iso.rx_buffer, MAX_RX_BUFFER_SIZE - 1);
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// Проверка таймаута отправки пакета (больше 100 мс)
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if (huart2.gState == HAL_UART_STATE_BUSY_TX && serial_control.tx_tick != 0) {
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if ((HAL_GetTick() - serial_control.tx_tick) > 100) {
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// Таймаут: принудительно сбрасываем передачу
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HAL_UART_Abort_IT(&huart2);
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// Выключаем DIR при сбросе передачи
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HAL_GPIO_WritePin(USART2_DIR_GPIO_Port, USART2_DIR_Pin, GPIO_PIN_RESET);
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serial_control.tx_tick = 0; // Сбрасываем tick
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}
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}
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// Проверка наличия принятой команды для обработки
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if (serial_control.command_ready && (huart2.gState != HAL_UART_STATE_BUSY_TX)) {
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// HAL_Delay(2);
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SC_CommandHandler(&serial_control.received_command);
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HAL_UARTEx_ReceiveToIdle_IT(&huart2, serial_control.rx_buffer, MAX_RX_BUFFER_SIZE - 1);
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serial_control.command_ready = 0; // Сбрасываем флаг
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}
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}
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void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size) {
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if (huart->Instance == huart2.Instance) {
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if(!process_received_packet(&serial_control, serial_control.rx_buffer, Size)){
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SC_SendPacket(NULL, 0, RESP_INVALID);
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}
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g_sc_command_source = SC_SOURCE_UART2;
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HAL_UARTEx_ReceiveToIdle_IT(&huart2, serial_control.rx_buffer, MAX_RX_BUFFER_SIZE - 1);
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} else if (huart->Instance == huart5.Instance) {
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if (process_received_packet(&serial_iso, serial_iso.rx_buffer, Size)) {
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g_sc_command_source = SC_SOURCE_UART5;
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SC_CommandHandler((ReceivedCommand_t*)&serial_iso.received_command);
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}
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HAL_UARTEx_ReceiveToIdle_IT(&huart5, serial_iso.rx_buffer, MAX_RX_BUFFER_SIZE - 1);
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}
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}
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void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
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if (huart->Instance == huart2.Instance) {
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HAL_GPIO_WritePin(USART2_DIR_GPIO_Port, USART2_DIR_Pin, GPIO_PIN_RESET);
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serial_control.tx_tick = 0;
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}
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}
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// Приватные функции реализации
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// Полностью программная реализация CRC-32 (полином CRC32_POLYNOMIAL, порядок little-endian)
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static uint32_t calculate_crc32(const uint8_t* data, uint16_t length) {
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uint32_t crc = 0xFFFFFFFFu;
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for (uint16_t i = 0; i < length; i++) {
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crc ^= data[i];
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for (uint8_t bit = 0; bit < 8; bit++) {
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if (crc & 0x1u) {
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crc = (crc >> 1) ^ CRC32_POLYNOMIAL;
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} else {
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crc >>= 1;
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}
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}
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}
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return crc ^ 0xFFFFFFFFu;
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}
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static uint16_t encode_packet(const uint8_t* payload, uint16_t payload_len, uint8_t* output, uint8_t response_code) {
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uint16_t out_index = 0;
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output[out_index++] = response_code;
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if (payload != NULL) {
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// Просто копируем полезную нагрузку без какого‑либо экранирования
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for (uint16_t i = 0; i < payload_len; i++) {
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output[out_index++] = payload[i];
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// Проверка переполнения
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if (out_index >= MAX_TX_BUFFER_SIZE - 5) { // 4 байта CRC + END_BYTE
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return 0;
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}
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}
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}
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// Вычисляем CRC для всего содержимого (код ответа + полезная нагрузка)
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uint32_t crc = calculate_crc32(output, out_index);
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uint8_t* crc_bytes = (uint8_t*)&crc;
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// Добавляем CRC без экранирования
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for (int i = 0; i < 4; i++) {
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output[out_index++] = crc_bytes[i];
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if (out_index >= MAX_TX_BUFFER_SIZE - 1) { // место для END_BYTE
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return 0;
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}
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}
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return out_index;
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}
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void SC_SendPacket(const uint8_t* payload, uint16_t payload_len, uint8_t response_code) {
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uint16_t packet_len = encode_packet(payload, payload_len, serial_control.tx_buffer, response_code);
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if (packet_len > 0) {
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if (huart2.gState == HAL_UART_STATE_BUSY_TX) {
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HAL_UART_Abort_IT(&huart2);
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HAL_GPIO_WritePin(USART2_DIR_GPIO_Port, USART2_DIR_Pin, GPIO_PIN_RESET);
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}
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HAL_GPIO_WritePin(USART2_DIR_GPIO_Port, USART2_DIR_Pin, GPIO_PIN_SET);
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HAL_UART_Transmit_IT(&huart2, serial_control.tx_buffer, packet_len);
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serial_control.tx_tick = HAL_GetTick();
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}
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}
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static uint8_t parse_packet(const uint8_t* packet_data, uint16_t packet_len, ReceivedCommand_t* out_cmd) {
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// if (test_crc_invalid && (packet_data[1] != CMD_GET_STATUS)) {
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// test_crc_invalid--;
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// return 0;
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// }else{
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// test_crc_invalid = 5;
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// }
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// Минимальный размер: 1 байт команды + 4 байта CRC
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if (packet_len < 5) return 0;
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if (packet_len > MAX_RX_BUFFER_SIZE) return 0;
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uint16_t payload_length = packet_len - 4;
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// Извлекаем принятую CRC (последние 4 байта, little-endian)
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uint32_t received_checksum =
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((uint32_t)packet_data[payload_length] << 0) |
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((uint32_t)packet_data[payload_length + 1] << 8) |
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((uint32_t)packet_data[payload_length + 2] << 16) |
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((uint32_t)packet_data[payload_length + 3] << 24);
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// Вычисляем CRC для полезной нагрузки
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uint32_t calculated_checksum = calculate_crc32(packet_data, payload_length);
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if (received_checksum != calculated_checksum) return 0; // CRC не совпадает
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out_cmd->argument = (void *)&packet_data[1];
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out_cmd->command = packet_data[0];
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out_cmd->argument_length = (uint8_t)(payload_length - 1);
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return 1;
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}
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static uint8_t process_received_packet(SerialControl_t *ctx, const uint8_t* packet_data, uint16_t packet_len) {
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if (!parse_packet(packet_data, packet_len, (ReceivedCommand_t *)&ctx->received_command)) {
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return 0;
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}
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ctx->command_ready = 1;
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return 1;
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}
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