99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
#include "opencv.h"
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#include "daemon.h"
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#define FRAME_SOF 0xA5
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#define FRAME_PAYLOAD_LEN (2+2+4*12) // 52
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#define FRAME_FULL_LEN (1+1+FRAME_PAYLOAD_LEN) //54
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float opencv_Vision_data[12];
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uint8_t Vison_revc_flag = 0; // 视觉数据接收标志位
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uint8_t vision_used_flag = 0; // 视觉数据使用标志位,用于判断是否需要使用视觉数据
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float Vison_Frequency; // 视觉数据接收频率,单位Hz
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static USARTInstance *cv_usart_instance;
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static DaemonInstance *OPENCV_vision_daemon_instance;
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/**
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* @brief 接收解包回调函数,将在bsp_usart.c中被usart rx callback调用
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* @todo 1.提高可读性,将get_protocol_info的第四个参数增加一个float类型buffer
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* 2.添加标志位解码
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*/
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static void DecodeVision()
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{
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DaemonReload(OPENCV_vision_daemon_instance); // 喂狗,防止离线
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static uint32_t counter;
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float dt = DWT_GetDeltaT(&counter);
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Vison_Frequency = 1.0f / dt; // 计算频率
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const uint16_t len = cv_usart_instance->recv_buff_size;
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uint16_t flag_register;
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uint8_t *buf = cv_usart_instance->recv_buff;
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if (len != FRAME_FULL_LEN) {
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// 长度不符
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LOGERROR("Vision frame length error");
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return;
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}
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if (buf[0] != FRAME_SOF) {
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// SOF 错误
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LOGERROR("Vision frame SOF error");
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return;
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}
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uint8_t payload_len = buf[1];
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if (payload_len != FRAME_PAYLOAD_LEN) {
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// Payload 长度不符
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LOGERROR("Vision frame payload length error");
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return;
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}
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// 解析命令号和 flags（小端）
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uint16_t cmd_id = buf[2] | (buf[3] << 8);
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uint16_t flags = buf[4] | (buf[5] << 8);
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// 解析 12 个 float
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for (int i = 0; i < 12; i++) {
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// 从 buf[6 + 4*i] 连续读 4 字节
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memcpy(&opencv_Vision_data[i], buf + 6 + 4*i, sizeof(float));
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}
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// // 解析任务标志位(拟合最接近的int)
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// int last_task_cmd = Vison_task_cmd;
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// Vison_task_cmd = (int)(Vison_data[10] + 0.5f);
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// if (Vison_task_cmd != last_task_cmd) {
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// Vison_task_changed = 1; // 任务命令变化
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// }
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Vison_revc_flag = 1; // 设置接收标志位
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// vision_used_flag = 1; // 设置视觉数据使用标志位
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//解析暂停标志位
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// run = (int)(Vison_data[11] + 0.5f);
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// 处理...
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// printf("Got frame: cmd=0x%04X flags=0x%04X\n", cmd_id, flags);
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// for (int i = 0; i < 12; i += 2) {
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// printf(" coord %d: (%.3f, %.3f)\n",
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// i/2, data[i], data[i+1]);
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// float a = data[0];
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// TODO: code to resolve flag_register;
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}
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void VisionOfflineCallback(void *owner_id)
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{
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Vison_revc_flag = 0; // 清除接收标志位
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}
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void Vision_Uart_Init(UART_HandleTypeDef *_handle)
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{
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USART_Init_Config_s conf;
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conf.module_callback = DecodeVision;
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conf.recv_buff_size = 54;
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conf.usart_handle = _handle;
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cv_usart_instance = USARTRegister(&conf);
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// 为master process注册daemon,用于判断视觉通信是否离线
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Daemon_Init_Config_s daemon_conf = {
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.callback = VisionOfflineCallback, // 离线时调用的回调函数,会重启串口接收
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.owner_id = NULL,
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.reload_count = 10,
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};
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OPENCV_vision_daemon_instance = DaemonRegister(&daemon_conf);
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} |