219 lines
7.3 KiB
C
219 lines
7.3 KiB
C
/*
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* @file virtual_chassis.c
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* @brief 虚拟底盘设备驱动实现 - 控制端
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* @details 作为控制端，发送控制命令到底盘，接收底盘反馈数据
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*/
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/* Includes ----------------------------------------------------------------- */
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#include "device/virtual_chassis.h"
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#include "bsp/can.h"
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#include "bsp/time.h"
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#include <string.h>
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/* Private typedef ---------------------------------------------------------- */
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/* Private define ----------------------------------------------------------- */
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/* Private macro ------------------------------------------------------------ */
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/* Private variables -------------------------------------------------------- */
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/* Private function prototypes ---------------------------------------------- */
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static int8_t Virtual_Chassis_DecodeMotor(Virtual_Chassis_t *chassis, uint8_t id, uint8_t *data) {
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if (chassis == NULL || data == NULL) {
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return DEVICE_ERR_NULL;
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}
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// 1. 解析转矩电流 - 前2字节，16位有符号整数 (精度0.01 Nm)
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int16_t torque_int;
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memcpy(&torque_int, &data[0], sizeof(int16_t));
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chassis->data.joint[id-chassis->param.motors.feedback_id].torque_current = (float)torque_int / 100.0f;
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// 2. 解析位置 - 第3-5字节，24位有符号整数 (精度0.0001 rad)
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int32_t angle_int = 0;
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angle_int |= ((int32_t)data[2]) << 16;
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angle_int |= ((int32_t)data[3]) << 8;
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angle_int |= ((int32_t)data[4]);
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// 符号扩展（24位转32位）
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if (angle_int & 0x800000) {
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angle_int |= 0xFF000000;
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}
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chassis->data.joint[id-chassis->param.motors.feedback_id].rotor_abs_angle = (float)angle_int / 10000.0f;
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// 3. 解析速度 - 第6-8字节，24位有符号整数 (精度0.001 rad/s)
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int32_t velocity_int = 0;
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velocity_int |= ((int32_t)data[5]) << 16;
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velocity_int |= ((int32_t)data[6]) << 8;
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velocity_int |= ((int32_t)data[7]);
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// 符号扩展（24位转32位）
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if (velocity_int & 0x800000) {
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velocity_int |= 0xFF000000;
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}
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chassis->data.joint[id-chassis->param.motors.feedback_id].rotor_speed = (float)velocity_int / 1000.0f;
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chassis->data.joint[id-chassis->param.motors.feedback_id].temp = 0.0f;
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return DEVICE_OK;
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}
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static int8_t Virtual_Chassis_DecodeIMU(Virtual_Chassis_t *chassis, uint8_t id, uint8_t *data, uint8_t len) {
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if (chassis == NULL || data == NULL || len < 8) {
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return DEVICE_ERR_NULL;
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}
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switch (id) {
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case 0x66: { // 加速度计数据 - x/y/z 各2字节，精度0.01g
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int16_t x, y, z;
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memcpy(&x, &data[0], 2);
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memcpy(&y, &data[2], 2);
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memcpy(&z, &data[4], 2);
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chassis->data.imu.accl.x = x / 100.0f;
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chassis->data.imu.accl.y = y / 100.0f;
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chassis->data.imu.accl.z = z / 100.0f;
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break;
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}
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case 0x67: { // 陀螺仪数据 - x/y/z 各2字节，精度0.01°/s，需转回弧度/s
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int16_t x, y, z;
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memcpy(&x, &data[0], 2);
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memcpy(&y, &data[2], 2);
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memcpy(&z, &data[4], 2);
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chassis->data.imu.gyro.x = (x / 100.0f) * 0.0174533f; // °/s -> rad/s
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chassis->data.imu.gyro.y = (y / 100.0f) * 0.0174533f;
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chassis->data.imu.gyro.z = (z / 100.0f) * 0.0174533f;
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break;
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}
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case 0x68: { // 欧拉角数据 - yaw/pitch/roll 各2字节，精度0.01°，需转回弧度
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int16_t yaw, pit, rol;
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memcpy(&yaw, &data[0], 2);
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memcpy(&pit, &data[2], 2);
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memcpy(&rol, &data[4], 2);
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chassis->data.imu.euler.yaw = (yaw / 100.0f) * 0.0174533f; // ° -> rad
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chassis->data.imu.euler.pit = (pit / 100.0f) * 0.0174533f;
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chassis->data.imu.euler.rol = (rol / 100.0f) * 0.0174533f;
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break;
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}
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case 0x69: { // 四元数数据 - q0/q1/q2/q3 各2字节，精度0.0001
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int16_t q0, q1, q2, q3;
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memcpy(&q0, &data[0], 2);
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memcpy(&q1, &data[2], 2);
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memcpy(&q2, &data[4], 2);
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memcpy(&q3, &data[6], 2);
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chassis->data.imu.quat.q0 = q0 / 10000.0f;
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chassis->data.imu.quat.q1 = q1 / 10000.0f;
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chassis->data.imu.quat.q2 = q2 / 10000.0f;
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chassis->data.imu.quat.q3 = q3 / 10000.0f;
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break;
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}
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default:
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return DEVICE_ERR;
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}
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return DEVICE_OK;
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}
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/* Exported functions ------------------------------------------------------- */
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/**
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* @brief 初始化虚拟底盘设备
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*/
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int8_t Virtual_Chassis_Init(Virtual_Chassis_t *chassis, Virtual_Chassis_Param_t *param) {
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if (chassis == NULL || param == NULL) {
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return DEVICE_ERR_NULL;
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}
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// 复制参数配置
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chassis->param = *param;
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// 初始化设备头部
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chassis->header.online = false;
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chassis->header.last_online_time = 0;
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// 初始化数据
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memset(&chassis->data, 0, sizeof(Virtual_Chassis_Feedback_t));
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memset(&chassis->output, 0, sizeof(Virtual_Chassis_Output_t));
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BSP_CAN_Init();
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for (int i = 0; i < 4; i++) {
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BSP_CAN_RegisterId(chassis->param.motors.can, 124 + i, 3); // 电机反馈ID
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BSP_CAN_RegisterId(chassis->param.imu.can, 0x66 + 1, 3);
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}
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// 设置设备在线状态
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chassis->header.online = true;
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chassis->header.last_online_time = BSP_TIME_Get_us();
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return DEVICE_OK;
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}
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/**
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* @brief 更新虚拟底盘数据（接收底盘反馈数据）
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*/
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int8_t Virtual_Chassis_Update(Virtual_Chassis_t *chassis) {
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if (chassis == NULL) {
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return DEVICE_ERR_NULL;
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}
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BSP_CAN_Message_t msg;
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for (int i = 0; i < 4; i++){
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BSP_CAN_GetMessage(chassis->param.motors.can, 124 + i, &msg, BSP_CAN_TIMEOUT_IMMEDIATE);
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Virtual_Chassis_DecodeMotor(chassis, msg.parsed_id, msg.data);
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}
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for (int i = 0; i < 4; i++){
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BSP_CAN_GetMessage(chassis->param.imu.can, 0x66 + i, &msg, BSP_CAN_TIMEOUT_IMMEDIATE);
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Virtual_Chassis_DecodeIMU(chassis, 0x66 + i, msg.data, msg.dlc);
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}
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return DEVICE_OK;
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}
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/**
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* @brief 发送电机使能命令
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*/
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int8_t Virtual_Chassis_Enable(Virtual_Chassis_t *chassis) {
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if (chassis == NULL) {
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return DEVICE_ERR_NULL;
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}
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BSP_CAN_StdDataFrame_t enable_frame = {
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.id = chassis->param.motors.Enable_id,
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};
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if (BSP_CAN_TransmitStdDataFrame(chassis->param.motors.can, &enable_frame) == BSP_OK) {
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return DEVICE_OK;
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}
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return DEVICE_ERR;
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}
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/**
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* @brief 发送电机力矩控制命令
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*/
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int8_t Virtual_Chassis_SendTorqueCommand(Virtual_Chassis_t *chassis, float torques[4]) {
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if (chassis == NULL || torques == NULL) {
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return DEVICE_ERR_NULL;
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}
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BSP_CAN_StdDataFrame_t torque_frame = {
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.id = chassis->param.motors.MIT_id,
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.dlc = 8,
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.data = {0}
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};
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// 8字节数据分别是4个电机的力矩 (每个电机2字节，有符号整数，精度0.01 Nm)
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for (int i = 0; i < 4; i++) {
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int16_t torque_raw = (int16_t)(torques[i] * 100.0f);
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memcpy(&torque_frame.data[i * 2], &torque_raw, sizeof(int16_t));
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chassis->output.joint_torque[i] = torques[i];
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}
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return BSP_CAN_TransmitStdDataFrame(chassis->param.motors.can, &torque_frame) == BSP_OK ? DEVICE_OK : DEVICE_ERR;
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}
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/* Private functions -------------------------------------------------------- */
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