Python_Example_modbus串口_完成模拟DSP通信_实现程序
2018-09-20
Author: 楚格
IDE： Pycharm2018.02 Python 3.7
KeyWord : Excel display
Explain:
思路：
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1 __all__ = ['Function_Serial_Info','Function_Receive_Data', 2 'Function_Receive_Data','Function_Send_Data', 3 'Function_Handle_Receive','Function_Modbus_CRC', 4 'Function_HexString_Trans',] 5 6 import sys 7 import os 8 9 import re 10 import string 11 import binascii 12 import array 13 import signal 14 import serial 15 import time 16 from time import sleep 17 18 import logging 19 import unittest 20 # ========================================= 21 22 ''' 23 # ------------------------------------------ 24 # 导入：外文件夹中 .py 模块 25 # 先导入路径，后引用模块 26 # ------------------------------------------ 27 ''' 28 # 1 D:\Auto_Testing_Pycharm\Log_Run 29 sys.path.insert(0,"./Log_Run") 30 from Testing_Log import * 31 32 33 ''' 34 # ------------------------------------------ 35 # 导入：本文件夹中 .py 模块 36 # 直接引用模块名称 37 # ------------------------------------------ 38 ''' 39 # preject module 40 from Testing_CRC import * 41 42 43 # ============================================================================ 44 ''' 45 # ============================================================================ 46 # Function: 串口设置 函数 47 # Explain : 48 # : 49 # ============================================================================ 50 ''' 51 def Function_Serial_Info(): 52 print('串口初始化 Function_Serial_Info') 53 # ----------------------------- 54 55 global global_var_serial_init 56 global global_var_serial_band 57 58 # 必须设置串口 59 local_var_serial_func = True 60 61 while local_var_serial_func: 62 63 print("默认请输入：1 \n重新输入为：2") 64 65 # default = input('您的请选择： ') 66 default = "1" # debug 67 68 if default == "1": 69 70 global_var_serial_init = serial.Serial(port="COM5", baudrate=115200, timeout=0.05) # 端口控制 71 local_var_serial_func = False # 结束执行 72 73 elif default == "2": 74 port = input('串口号(数字)： ', ) # 端口号 75 76 local_var_serial_nunber = True 77 78 while local_var_serial_nunber: 79 print('可选波特率：1 = 9600 \n\t\t 2 = 115200') 80 global_var_serial_band = input('波特率序号： ') 81 82 if global_var_serial_band == "1": 83 global_var_serial_band = 9600 84 local_var_serial_nunber = False 85 86 elif global_var_serial_band == "2": 87 global_var_serial_band = 115200 88 local_var_serial_nunber = False 89 90 else: 91 print('超出范围：请重新选择波特率！') 92 local_var_serial_nunber = True 93 94 # 组装成串口初设信息 95 global_var_serial_init = serial.Serial(port="COM" + port, baudrate=global_var_serial_band, timeout=1) # 端口控制 96 97 local_var_serial_func = False # 结束执行 98 99 else: 100 print('超出选择范围，请重新选择序号！') 101 local_var_serial_func = True # 返回继续执行 102 103 # ------------------------------------------------------ 104 105 ''' 106 # ============================================================================ 107 # Function: 接受数据 函数 108 # Explain : 接受串口收到的数据 109 # : 110 # ============================================================================ 111 ''' 112 def Function_Receive_Data(): 113 # print('Function_Receive_Data :') 114 # logging.debug('Function_Receive_Data') 115 # ====================================== 116 global global_var_receive_string # 作为获取到的数据 117 118 # 接收单次数据，外部进行处理 SINGLE #循环接收数据，内部进行处理 LOOP 119 FREQUENCY = True 120 SINGLE = False 121 LOOP = True 122 123 if FREQUENCY == SINGLE: 124 print(SINGLE) 125 # 待开发模块 126 127 elif FREQUENCY ==LOOP: 128 # logging.debug('LOOP:') 129 # ------------------------------------------------------ 130 # line = global_var_serial_init.readline() # 读取全部内容 131 line = global_var_serial_init.read(100) # 读取全部内容 132 # print("Len :", len(line), " Type :", type(line), " readline : %s" % line) 133 # logging.debug(line) 134 135 # 字节变成字符串,目的是方便处理数据 136 types_transform_string = line.hex() # 字节变成字符串 137 # print("Len :", len(types_transform_string), type(types_transform_string), types_transform_string) 138 # logging.debug(types_transform_string) 139 140 # ------------------------------------------------------ 141 # 数据名称变换 目的是作为全局变量 142 global_var_receive_string = types_transform_string 143 144 else: 145 pass 146 # ------------------------------------------------------ 147 148 ''' 149 # ============================================================================ 150 # Function: 发送数据 函数 151 # Explain : 发送数据到串口 152 # golal_var_result_send_data 153 # ============================================================================ 154 ''' 155 def Function_Send_Data(send_data): 156 # print('发送指令函数 Function_Send_Data') 157 # --------------------------- 158 # print(''' 159 # ---- Info of Send Data Parameter ---- 160 # Send data : %s 161 # Serial Port : %s 162 # ''' % ( send_data,global_var_serial_init.port) 163 # ) 164 165 local_var_send_data_buff =send_data 166 #-------------------------------------- 167 # 发送函数 核心语句 输出接口 168 global_var_serial_init.write(local_var_send_data_buff) 169 #-------------------------------------- 170 171 # global_var_serial_init.close() # 关闭串口 172 # global_var_serial_init.open() # 打开端口 173 # global_var_serial_init.isOpen() #串口是否被打开 174 # --------------------------------------------------------- 175 ''' 176 # ============================================================================ 177 # Function: 数据处理 函数 178 # Explain: 接收数据进行处理 179 # global_var_receive_string 180 # ============================================================================ 181 ''' 182 def Function_Handle_Receive(): 183 # ====================================== 184 global global_var_crc_value 185 186 local_var_handle_data = global_var_receive_string 187 # global_var_receive_string.reset_input_buffer() #清除输入缓存 188 print('local_var_handle_data: < %s >'%local_var_handle_data) 189 190 logging.debug(local_var_handle_data) 191 # logging.getLogger('Function_Handle_Receive') 192 193 # # 字符串重新规整 剪断拼接字符串 194 # DIVISION = 24 195 # local_var_handle_data = local_var_handle_data[10:] +local_var_handle_data[:10] 196 # local_var_Temp_1 =local_var_handle_data[ :DIVISION] # 新划分的数据 local_var_Temp_1 197 # local_var_Temp_2 =local_var_handle_data[DIVISION: ] # 新划分的数据 local_var_Temp_2 198 # print('24',time.time()) 199 # logging.debug(local_var_Temp_1) 200 # logging.debug(local_var_Temp_2) 201 # print('25',time.time()) 202 local_var_Temp_1 =local_var_handle_data # 新划分的数据 local_var_Temp_1 203 204 205 # 结果存留区 206 # request data format 207 208 L_DIVI = 0 209 result_CAN_ID_1 = local_var_Temp_1[(L_DIVI + 0):(L_DIVI + 8)] 210 result_slave_address_1 = local_var_Temp_1[(L_DIVI + 8):(L_DIVI + 10)] 211 result_slave_function_1 = local_var_Temp_1[(L_DIVI + 10):(L_DIVI + 12)] 212 result_slave_register_1 = local_var_Temp_1[(L_DIVI + 12):(L_DIVI + 16)] 213 result_slave_number_1 = local_var_Temp_1[(L_DIVI + 16):(L_DIVI + 20)] 214 # 根据不同 result_CAN_ID 进行处理，包括组包 response data 215 # 调用函数 216 Function_Handle_Judge(result_CAN_ID_1, 217 result_slave_address_1, 218 result_slave_function_1, 219 result_slave_register_1, 220 result_slave_number_1) 221 #-------------------------------------------------- 222 223 224 # --------------------------------------------------------- 225 ''' 226 # ============================================================================ 227 # Function: 判断 228 # Explain: 输入参数 CAN_ID,slave_address,slave_function,slave_register,slave_number 229 # 输出参数 230 # ============================================================================ 231 ''' 232 def Function_Handle_Judge(result_CAN_ID,result_slave_address, 233 result_slave_function,result_slave_register,result_slave_number): 234 #------------------------------------------ 235 # 形参名称变换 236 Local_var_CAN_ID = result_CAN_ID 237 Local_var_slave_address = result_slave_address 238 Local_var_slave_function = result_slave_function 239 Local_var_slave_register = result_slave_register 240 Local_var_slave_number = result_slave_number 241 Local_var_slave_RegNum = result_slave_register \ 242 + result_slave_number 243 # -------------------------------------------- 244 245 # 常量声明 246 SLAVE_CAN_ID_1 = '00000001' 247 SLAVE_CAN_ID_2 = '00000002' 248 # 功能码 249 SLAVE_FUNCTION_RO = '04' 250 SLAVE_FUNCTION_SG = '06' 251 SLAVE_FUNCTION_MU = '10' 252 253 # 此处来自协议文本 此处复制 后期拓展 254 #------------------------ 255 #协议取值 临时 256 #------------------------ 257 RESISTER_C_1 = '09c3' 258 NUMBER_C_1 = '0052' 259 RESISTER_C_2 = '0a15' 260 NUMBER_C_2 = '003c' 261 RESISTER_C_3 = '137c' 262 NUMBER_C_3 = '000f' 263 RESISTER_C_4 = '138f' 264 NUMBER_C_4 = '0039' 265 RESISTER_C_5 = '13d8' 266 NUMBER_C_5 = '001b' 267 268 269 #----------------------- 270 # logging.debug(Local_var_CAN_ID) 271 # ID='00000001' 272 if (Local_var_CAN_ID == SLAVE_CAN_ID_1) : 273 # print(Local_var_CAN_ID,Local_var_slave_address,Local_var_slave_function,Local_var_slave_register,Local_var_slave_number) 274 275 if Local_var_slave_function == SLAVE_FUNCTION_RO : 276 277 if (Local_var_slave_register == RESISTER_C_1) and (Local_var_slave_number == NUMBER_C_1 ): 278 Local_temp_value = Function_Response_Data_1() # 回填数据 279 Function_Handle_AddCRC_Send(Local_var_CAN_ID,Local_var_slave_address, Local_var_slave_function, Local_temp_value) 280 281 elif (Local_var_slave_register == RESISTER_C_2) and (Local_var_slave_number == NUMBER_C_2 ): 282 Local_temp_value = Function_Response_Data_2() # 回填数据 283 Function_Handle_AddCRC_Send(Local_var_CAN_ID, Local_var_slave_address, Local_var_slave_function,Local_temp_value) 284 285 elif (Local_var_slave_register == RESISTER_C_3) and (Local_var_slave_number == NUMBER_C_3 ): 286 Local_temp_value = Function_Response_Data_3() # 回填数据 287 Function_Handle_AddCRC_Send(Local_var_CAN_ID, Local_var_slave_address, Local_var_slave_function,Local_temp_value) 288 289 elif (Local_var_slave_register == RESISTER_C_4) and (Local_var_slave_number == NUMBER_C_4 ): 290 Local_temp_value = Function_Response_Data_4() # 回填数据 291 Function_Handle_AddCRC_Send(Local_var_CAN_ID, Local_var_slave_address, Local_var_slave_function,Local_temp_value) 292 293 elif (Local_var_slave_register == RESISTER_C_5) and (Local_var_slave_number == NUMBER_C_5 ): 294 Local_temp_value = Function_Response_Data_5() # 回填数据 295 Function_Handle_AddCRC_Send(Local_var_CAN_ID, Local_var_slave_address, Local_var_slave_function,Local_temp_value) 296 297 298 else: 299 print('未知。。。register or number') 300 301 elif Local_var_slave_function == SLAVE_FUNCTION_SG: 302 print('-06') 303 Function_Handle_AddCRC_Send(Local_var_CAN_ID, Local_var_slave_address, Local_var_slave_function, 304 Local_var_slave_RegNum) 305 306 307 elif Local_var_slave_function == SLAVE_FUNCTION_MU: 308 print('10') 309 Function_Handle_AddCRC_Send(Local_var_CAN_ID, Local_var_slave_address, Local_var_slave_function, 310 Local_var_slave_RegNum) 311 312 313 else: 314 print('未知... function code 功能码') 315 316 317 # # ID='00000002' 318 elif Local_var_CAN_ID == SLAVE_CAN_ID_2: 319 # print(Local_var_CAN_ID,Local_var_slave_address,Local_var_slave_function,Local_var_slave_register,Local_var_slave_number) 320 print('暂时忽略') 321 322 else: 323 print('未知。。。 CAN_ID') 324 325 326 # --------------------------------------------------------- 327 ''' 328 # ============================================================================ 329 # Function: 添加CRC && send 330 # Explain: 输入参数 CAN_ID,slave_address,slave_function,slave_register,slave_number 331 # 输出参数 332 # 333 # 334 # ============================================================================ 335 ''' 336 def Function_Handle_AddCRC_Send(result_CAN_ID,result_slave_address,result_slave_function,result_temp_value): 337 # print('Function_Handle_AddCRC_Send: ') 338 # ------------------------------------------ 339 # 形参名称变换 340 Local_var_CAN_ID = result_CAN_ID 341 Local_var_slave_address = result_slave_address 342 Local_var_slave_function = result_slave_function 343 Local_var_temp_value = result_temp_value 344 # -------------------------------------------- 345 346 # -------------------- 347 # 预处理目的：添加 CRC码 348 local_var_modbus_data = Local_var_slave_address + Local_var_slave_function + Local_var_temp_value 349 Pack_modbus_data = Function_HexString_Trans(local_var_modbus_data) 350 Pack_Buff_modbus_data = Function_Modbus_CRC(Pack_modbus_data, 0) 351 352 Pack_Buff_CAN_data = Local_var_CAN_ID # 作为格式对称保留 353 354 local_var_result_send_data = Function_HexString_Trans(Pack_Buff_CAN_data) + Pack_Buff_modbus_data 355 356 logging.debug(local_var_result_send_data) 357 print(local_var_result_send_data) 358 # -------------------------- 359 # handle data finish got together package 360 # 这是处理完成后，组包发送给串口 361 # ------------------------------------------------------------------- 362 Function_Send_Data(local_var_result_send_data) # 核心 函数 363 # ------------------------------------------------------------------- 364 365 366 367 # --------------------------------------------------------- 368 369 ''' 370 # ============================================================================ 371 # Function: Modbus CRC 校验 函数 372 # Explain: 输入参数 列表 [1, 4, 8, 1, 2, 3, 4, 5, 6, 7, 8 ] 373 # 输出参数 列表 [1, 4, 8, 1, 2, 3, 4, 5, 6, 7, 8, 212, 201] 374 # check right： 1 wrong： 0 375 # 376 # ============================================================================ 377 ''' 378 def Function_Modbus_CRC(Pack_modbus_data,test_type): 379 # print('Function_Modbus_CRC ： ',) 380 #------------------------------------ 381 global global_var_modbus_data_buff 382 global global_var_modbus_check 383 384 if test_type == 0 : 385 # # CRC 校验 添加校验码 386 temp_crc_translate = CalCRC16(Pack_modbus_data, len(Pack_modbus_data)) # 核心步骤 387 # ------------------------- 388 # # 注意添加先后顺序 先低 后高 389 Pack_modbus_data.append(int(hex(temp_crc_translate & 0xFF), 16)) 390 Pack_modbus_data.append(int(hex((temp_crc_translate >> 8) & 0xFF), 16)) 391 # print('Pack_Buff_modbus_data : ', len(Pack_modbus_data), type(Pack_modbus_data),Pack_modbus_data) # calculation value CRC 392 # ------------------------- 393 global_var_modbus_data_buff = Pack_modbus_data # 重新命名 394 395 return global_var_modbus_data_buff 396 397 # --------------------------------------------------------- 398 # CRC 校验检查 check 399 elif test_type == 1 : 400 401 temp_CRC_check = CheckCRC(Pack_modbus_data, len(Pack_modbus_data), 0) 402 403 if temp_CRC_check == 1: 404 print('Result :', temp_CRC_check) # check calculation value 405 print('CRC_Check : Right') 406 global_var_modbus_check = temp_CRC_check # 重新命名 407 408 return global_var_modbus_check 409 410 else: 411 print('Result :', temp_CRC_check) # check calculation value 412 print('CRC_Check : wrong') 413 global_var_modbus_check = temp_CRC_check # 重新命名 414 415 return global_var_modbus_check 416 417 # --------------------------------------------------------- 418 # --------------------------------------------------------- 419 ''' 420 # ============================================================================ 421 # 函数 数据转换 422 # Explain: 输入参数：data_trans 423 # 输出参数：global_var_trans_data 424 # 功能 ：hex string转换为整形列表 425 # example: AT = '01F2AA0405' 426 # SEND_AT = Function_HexString_Trans(AT) 427 # print(SEND_AT) 428 # Function_Send_Data(SEND_AT) 429 # time.sleep(2) 430 # ============================================================================ 431 ''' 432 433 def Function_HexString_Trans(data_trans): 434 # print('Function_HexString_Trans ： ',) 435 #------------------------------------ 436 global global_var_trans_data 437 438 temp = bytearray.fromhex(data_trans) 439 global_var_trans_data= list(temp) 440 # print(global_var_trans_data) 441 442 return global_var_trans_data 443 444 # -------------------------------------------- 445 446 ''' 447 # ============================================================================ 448 # Function: 449 # Explain: 450 # 451 # 452 # ============================================================================ 453 ''' 454 def Function_Response_Data_1(): 455 global temp_data 456 457 temp_data = 'A420010000010001000258303000000000000000000000000000000000000001' \ 458 '0F534736304B544C0000000000000000005631310000000000000000000000' \ 459 '0000000000002064010101000100000000FF00000000303030303030303030' \ 460 '303030300121020330010002' \ 461 '00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FF00000000' \ 462 '00000000000000000000000000000000000000000000000000000002' 463 464 return temp_data 465 466 def Function_Response_Data_2(): 467 global temp_data 468 469 temp_data = '784D4453505F534736304B544C5F5631315F56315F5300000000000000000053' \ 470 '4736304B544C5F43504C445F5631315F430000000000000000000000003030' \ 471 '00000000000000000000000000000000000000000000000000000000303000' \ 472 '000000000000000000000000000000000000000000000000000000' 473 474 return temp_data 475 476 def Function_Response_Data_3(): 477 global temp_data 478 479 temp_data = '1E00000000000000410011004100320000000007000100010F02580001012C' 480 481 return temp_data 482 483 484 def Function_Response_Data_4(): 485 global temp_data 486 # 13 8F 00 39 487 temp_data = '72013E00000000000000000000000000010000000000000000000000000000' \ 488 '00000000000000000000000000000000000000000000000000000000000000' \ 489 '00000000000000000000005500000000000000000000550001FFFF00000100' \ 490 '000000000000000000000001000000030000FFFF0000' 491 492 return temp_data 493 494 def Function_Response_Data_5(): 495 global temp_data 496 # 13 D8 00 1B 497 temp_data = '36FFFC000000000000000000000000000100000000000000770086009E0000' \ 498 '00000000000005140514051400000000157C000400640300' 499 500 return temp_data 501 502 503 504 # def Function_Response_Data_8(): 505 # global temp_data 506 # 507 # temp_data = '' 508 # 509 # return temp_data 510 511 # ============================================================================ 512 513 514 ''' 515 # ============================================================================ 516 # 测试专用 517 # ============================================================================ 518 ''' 519 if __name__ == '__main__': 520 print('-------------------------------------') 521 print('=\t\t 欢迎进入 测试环境 \t\t\t=') 522 print('-------------------------------------\n') 523 524 Function_Serial_Info() # 打开串口 525 # 需要关闭窗口 526 # global_var_serial_init.close() # 关闭串口 527 # global_var_serial_init.open() # 打开端口 528 print(global_var_serial_init.isOpen()) 529 530 531 TEST_RUN = True # 测试层演示 532 USER_DEBUD = True # 用户层调试 False 533 BOOT_DEBUG = True # 开发层调试 False 534 535 # 一直收到数据 536 while True: 537 # print('1', time.time()) 538 Function_Receive_Data() # 接收函数 539 # print('2', time.time()) 540 Function_Handle_Receive() # 处理函数 541 # print('3', time.time()) 542 543 544 # if TEST_RUN: 545 # print('USER_DEBUD') 546 # # -------------------------- 547 # else: 548 # pass 549 550 # global_var_serial_init.colse() 551 # ===============================================================
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