移远EC20二次开发之4G图像传输

原文地址::https://blog.csdn.net/qq_35570735/article/details/87180048?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.edu_weight&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.edu_weight

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  我们公司和移远有合作所以得到了他们EC20的二次开发的开发板。下面是我开发4G图像传输的总结(工作方式有两种，一种AT一种socket)。

     下面先是AT命令

      一.在linux下解压文件

              解压如下文件

           

      二.安装SDK

             每次开新的终端进行编译都要进行环境变量的设置

      三.进入历程

           

      四.修改历程

           

1. #include "ql_oe.h"

2. #include

3. #include

4. #include

5. #include

6. #include

7. #include

8. #include

9. #include

10.  

11. //those define was added by myself

12. #define MAXLINE 1024 //一次读取最大的字节数

13.  

14. #define QUEC_AT_PORT "/dev/smd8"

15.  

16. static int smd_fd = -1;

17. int Ql_SendAT(char* atCmd, char* finalRsp, long timeout_ms, int should_Add);

18.  

19. int main(int argc, char* argv[])

20. {

21. FILE *from_file; //need send to server

22. char buf[MAXLINE];

23. char receive_buf[100];

24. int read_len;

25. char str[10];

26. printf("< Quectel OpenLinux: AT example >\n");

27.  

28. smd_fd = open(QUEC_AT_PORT, O_RDWR | O_NONBLOCK | O_NOCTTY); //打开虚拟串口

29. printf("< open(\"%s\")=%d >\n", QUEC_AT_PORT, smd_fd);

30.  

31. Ql_SendAT("AT+COPS?", "OK", 1000, 0); //检查网络

32.  

33. if((from_file=open("timg.jpg",O_RDWR))==NULL) //打开要读取的文件

34. {

35. printf("Can't open the file \n");

36. exit(1);

37. }

38.  

39. Ql_SendAT("AT+QIOPEN=1,2,\"UDP SERVICE\",\"127.0.0.1\",0,3030,0", "OK", 1000, 0); //建立UDP服务

40. Ql_SendAT("AT+QISTATE=0,1", "OK", 1000, 0);

41.  

42. while ( (read_len = read(from_file, buf, MAXLINE)) > 0 ) //读取文件知道读完

43. {

44.  

45. printf("read_len = %d\n", read_len);

46. sprintf(str,"%d",read_len); //将int型整数转为char型

47.  

48. sprintf(receive_buf, "AT+QISEND=2,%s,\"148.70.42.237\",3333", str); //合成发送命令

49.  

50. Ql_SendAT(receive_buf, "OK", 1000, 0); //发送发送命令

51.  

52. Ql_SendAT(buf, "SEND OK", 5000, read_len); //添加发送的数据

53. bzero(receive_buf, 100); //清空数组

54. bzero(buf, MAXLINE);

55. }

56. printf("read_len = %d\n", read_len);

57. Ql_SendAT("AT+QICLOSE=2", "OK", 1000, 0);

58. close(from_file); //关闭文件

59. close(smd_fd); //关闭虚拟串口

60. printf("< Quectel OpenLinux: AT example end >\n\n");

61. return 0;

62. }

63.  
64.  

65. int Ql_SendAT(char* atCmd, char* finalRsp, long timeout_ms, int should_Add)//should_Add是判断是否末尾要加入\r\n，如果不添加则还代表atCmd数据的长度

66. {

67. int iRet;

68. int iLen;

69. fd_set fds;

70. int rdLen;

71. #define lenToRead 100

72. char strAT[100];

73. char strFinalRsp[100];

74. char strResponse[100];

75. struct timeval timeout = {0, 0};

76. boolean bRcvFinalRsp = FALSE;

77.  

78. sprintf(strFinalRsp, "\r\n%s", finalRsp);

79.  

80. timeout.tv_sec = timeout_ms / 1000;

81. timeout.tv_usec = timeout_ms % 1000;

82.  

83. // Send AT

84. if( should_Add != 0 )

85. {

86. iRet = write(smd_fd, atCmd, should_Add);

87. printf("iLen = %d", should_Add);

88. }

89. else

90. {

91. memset(strAT, 0x0, sizeof(strAT));

92. iLen = sizeof(atCmd);

93. strncpy(strAT, atCmd, iLen);iLen = strlen(atCmd);

94. if ((atCmd[iLen-1] != '\r') && (atCmd[iLen-1] != '\n'))

95. {

96. iLen = sprintf(strAT, "%s\r\n", atCmd);

97. strAT[iLen] = 0;

98. }

99. iRet = write(smd_fd, strAT, iLen);

100. }

101. //printf(">>Send AT: \"%s\", iRet=%d\n", atCmd, iRet);

102.  

103. // Wait for the response

104. while (1)

105. {

106. FD_ZERO(&fds);

107. FD_SET(smd_fd, &fds);

108.  

109. //printf("timeout.tv_sec=%d, timeout.tv_usec: %d \n", (int)timeout.tv_sec, (int)timeout.tv_usec);

110. switch (select(smd_fd + 1, &fds, NULL, NULL, &timeout))

111. //switch (select(smd_fd + 1, &fds, NULL, NULL, NULL)) // block mode

112. {

113. case -1:

114. printf("< select error >\n");

115. return -1;

116.  

117. case 0:

118. printf("< time out >\n");

119. return 1;

120.  

121. default:

122. if (FD_ISSET(smd_fd, &fds))

123. {

124. do {

125. memset(strResponse, 0x0, sizeof(strResponse));

126. rdLen = read(smd_fd, strResponse, lenToRead);

127. //printf(">>Read response/urc, len=%d, content:\n%s\n", rdLen, strResponse);

128. //printf("rcv:%s", strResponse);

129. //printf("final rsp:%s", strFinalRsp);

130. if ((rdLen > 0) && strstr(strResponse, strFinalRsp))

131. {

132. if (strstr(strResponse, strFinalRsp) // final OK response

133. || strstr(strResponse, "+CME ERROR:") // +CME ERROR

134. || strstr(strResponse, "+CMS ERROR:") // +CMS ERROR

135. || strstr(strResponse, "ERROR")) // Unknown ERROR

136. {

137. //printf("\n< match >\n");

138. bRcvFinalRsp = TRUE;

139. }else{

140. printf("\n< not final rsp >\n");

141. }

142. }

143. } while ((rdLen > 0) && (lenToRead == rdLen));

144. }else{

145. printf("FD is missed\n");

146. }

147. break;

148. }

149.  

150. // Found the final response , return back

151. if (bRcvFinalRsp)

152. {

153. break;

154. }

155. }

156. return 0;

157. }

    然后make编译   注意字符串格式获取长度少用strlen，因为0x00是字符串的结束符。如果发送二进制遇到0x13，0x10这些出问题可以修改串口的属性。

    五.进入开发板的linux系统

         

   六.上传文件

        使用Zmoden上传文件。注意移远给的系统只有usrdata是可写的。然后修改权限为可执行。

chmod 777 example_at

   七.运行程序

    

./example_at

 

  下面是socket程序，运行方法和上方一样

   先要拨号，不然无法socket运行起来，下面是拨号程序

1. #include

2. #include

3. #include

4. #include

5. #include

6. #include

7. #include "ql_wwan_v2.h"

8.  

9. static void data_call_state_callback(ql_data_call_state_s *state)

10. {

11. printf("profile id %d ", state->profile_idx);

12. printf("IP family %s ", QL_DATA_CALL_TYPE_IPV4 == state->ip_family ? "v4" : "v6");

13. if(QL_DATA_CALL_CONNECTED == state->state) {

14. printf("is Connected\n");

15. printf("Interface Name: %s\n", state->name);

16. if(QL_DATA_CALL_TYPE_IPV4 == state->ip_family) {

17. printf("IP address: %s\n", inet_ntoa(state->v4.ip));

18. printf("Gateway address: %s\n", inet_ntoa(state->v4.gateway));

19. printf("Primary DNS address: %s\n", inet_ntoa(state->v4.pri_dns));

20. printf("Second DNS address: %s\n", inet_ntoa(state->v4.sec_dns));

21. } else {

22. char ipv6_buffer[INET6_ADDRSTRLEN];

23. inet_ntop(AF_INET6, (void *)&state->v6.ip, ipv6_buffer, INET6_ADDRSTRLEN);

24. printf("IP address: %s\n", ipv6_buffer);

25. inet_ntop(AF_INET6, (void *)&state->v6.gateway, ipv6_buffer, INET6_ADDRSTRLEN);

26. printf("Gateway address: %s\n", ipv6_buffer);

27. inet_ntop(AF_INET6, (void *)&state->v6.pri_dns, ipv6_buffer, INET6_ADDRSTRLEN);

28. printf("Primary DNS address: %s\n", ipv6_buffer);

29. inet_ntop(AF_INET6, (void *)&state->v6.sec_dns, ipv6_buffer, INET6_ADDRSTRLEN);

30. printf("Second DNS address: %s\n", ipv6_buffer);

31. }

32. printf("\n");

33. } else {

34. printf("is disconnected, and reason code 0x%x\n", state->err);

35. }

36. }

37.  

38. int main(int argc, char **argv)

39. {

40. int retry = 10;

41. int loop;

42. ql_data_call_s data_call[3];

43. ql_data_call_info_s data_call_info;

44. ql_data_call_error_e err = QL_DATA_CALL_ERROR_NONE;

45.  

46. memset(&data_call, 0, sizeof(data_call));

47.  

48. /*

49. * The dialup API relies on the Quectel Manager service. If the program is not initialized successfully,

50. * debugging these API interfaces will fail, so here is judged whether the service is started normally.

51. */

52. while(0 != QL_Data_Call_Init_Precondition() && 0 != retry) {

53. printf("The Quectel manager service is not initialized, about 500ms try again.\n");

54. usleep(500*1000);

55. retry--;

56. }

57.  

58. if(0 == retry) {

59. printf("Data call failure\n");

60. exit(0);

61. }

62.  

63. if(QL_Data_Call_Init(data_call_state_callback)) {

64. printf("Initialization data call failure\n");

65. exit(0);

66. }

67.  

68. for(loop = 0; loop < sizeof(data_call)/sizeof(data_call[0]); loop++) {

69. memset(&data_call_info, 0, sizeof(data_call_info));

70. err = QL_DATA_CALL_ERROR_NONE;

71. data_call[loop].profile_idx = loop+1;

72. /*

73. * If your data call program is coredump, the data call status will not disappear automatically.

74. * When your program is start again, you need to call the QL_Data_Call_Info_Get interface to get

75. * the data call status. Because it is already in the data call state, you call QL_Data_Call_Start

76. * again without callback function

77. */

78. if(QL_Data_Call_Info_Get(data_call[loop].profile_idx, QL_DATA_CALL_TYPE_IPV4, &data_call_info, &err)) {

79. printf("get profile index %d information failure: errno 0x%x\n", data_call[loop].profile_idx, err);

80. continue;

81. }

82. if(QL_DATA_CALL_CONNECTED == data_call_info.v4.state) {

83. printf("the profile index %d is already connected, don't up\n", data_call[loop].profile_idx);

84. continue;

85. }

86. data_call[loop].ip_family = QL_DATA_CALL_TYPE_IPV4;

87. data_call[loop].reconnect = true;

88. err = QL_DATA_CALL_ERROR_NONE;

89. if(QL_Data_Call_Start(&data_call[loop], &err)) {

90. printf("the profile index %d start data call failure: 0x%x\n", data_call[loop].profile_idx, err);

91.  

92. }

93. printf("the profile index %d start data call success\n", data_call[loop].profile_idx);

94. usleep(500*1000);

95. }

96. sleep(3600);

97. return 0;

98. }

   然后soket传输图像

1. #include

2. #include

3. #include

4. #include

5. #include

6. #include

7. #include

8. #include

9. #include

10. #include

11. #include

12. #include

13. #include

14.  

15. #define SERVER_PORT 3333

16. #define MAXLINE 1024

17.  

18. int main(int argc,char **argv)

19. {

20. //new add

21. /*int retry = 10;

22. int loop;

23. ql_data_call_s data_call[3];

24. ql_data_call_info_s data_call_info;

25. ql_data_call_error_e err = QL_DATA_CALL_ERROR_NONE;

26.  

27. memset(&data_call, 0, sizeof(data_call));*/

28.  

29. int sockfd;

30. int read_len;

31. FILE *from_file; //need send to server

32. char buf[MAXLINE];

33. struct sockaddr_in cliaddr;

34.  

35. bzero(&cliaddr, sizeof(cliaddr));

36. cliaddr.sin_family = AF_INET;

37. cliaddr.sin_port = htons(3333);

38. cliaddr.sin_addr.s_addr = inet_addr("148.70.42.237");

39.  

40. sockfd=socket(AF_INET,SOCK_DGRAM,0);

41. if(sockfd<0)

42. {

43. fprintf(stderr,"Socket Error:%s\n",strerror(errno));

44. exit(1);

45. }

46.  

47. if((from_file=open("timg.jpg",O_RDWR))==NULL)

48. {

49. printf("Can't open the file \n");

50. exit(1);

51. }

52.  

53. while ( (read_len = read(from_file, buf, MAXLINE)) > 0 )

54. {

55. sendto(sockfd, buf ,read_len, 0 , (struct sockaddr*)&cliaddr, sizeof(cliaddr));

56. bzero(buf, MAXLINE);

57. }

58.  

59. close(from_file);

60. close(sockfd);

61. }

 程序也是先运行拨号的再运行socket