1. 测试
//ATK-SIM900A 各项测试(拨号测试、短信测试、GPRS测试)共用代码 //sim900a发送命令后,检测接收到的应答 //str:期待的应答结果 //返回值:0,没有得到期待的应答结果 // 其他,期待应答结果的位置(str的位置) uint8_t* sim900a_check_cmd(uint8_t *str) { char *strx=0; if(UART8__RX_STA&0X8000) //接收到一次数据了 { UART8_RX_BUF[UART8__RX_STA&0X7FFF]=0;//添加结束符 printf("%s",UART8_RX_BUF); strx=strstr((const char*)UART8_RX_BUF,(const char*)str); } return (uint8_t*)strx; } //向sim900a发送命令 //cmd:发送的命令字符串(不需要添加回车了),当cmd<0XFF的时候,发送数字(比如发送0X1A),大于的时候发送字符串. //ack:期待的应答结果,如果为空,则表示不需要等待应答 //waittime:等待时间(单位:10ms) //返回值:0,发送成功(得到了期待的应答结果) // 1,发送失败 uint8_t sim900a_send_cmd(uint8_t *cmd,uint8_t *ack,uint16_t waittime) { uint8_t res=0; UART8__RX_STA=0; UART8_RX_REC_ATCOMMAD=1; if((u32)cmd<=0XFF) { while(READ_BIT(UART8->CR1,1U<<7) != 0); //等待通道7传输完成 UART8->TDR=(u32)cmd; } else { UART8SendCmd(cmd, strlen((char*)cmd)); } if(ack&&waittime) //需要等待应答 { while(--waittime) //等待倒计时 { // uint32_t n = 409600; // while(n--); HAL_Delay(10); if(UART8__RX_STA&0X8000)//接收到期待的应答结果 { if(sim900a_check_cmd(ack))break;//得到有效数据 UART8__RX_STA=0; } } if(waittime==0) { res=1; } } UART8_RX_REC_ATCOMMAD=0; return res; } uint8_t sim900a_work_test(void) { if(sim900a_send_cmd((uint8_t *)"AT",(uint8_t *)"OK",100)) { if(sim900a_send_cmd((uint8_t *)"AT",(uint8_t *)"OK",100)) { printf("sim900a SIM_COMMUNTION_ERR !\r\n"); return SIM_COMMUNTION_ERR; //通信不上 } } printf("sim900a SIM_COMMUNTION_OK !\r\n"); if(sim900a_send_cmd((uint8_t *)"AT+CPIN?",(uint8_t *)"READY",400)) { printf("sim900a SIM_CPIN_ERR !\r\n"); return SIM_CPIN_ERR; //没有SIM卡 } else { printf("sim900a SIM_CPIN_OK !\r\n"); } if(sim900a_send_cmd((uint8_t *)"AT+CREG?",(uint8_t *)"0,1",400)) { if(strstr((const char*)UART8_RX_BUF,"0,5")==NULL) { printf("sim900a SIM_NO_NET !\r\n"); if(!sim900a_send_cmd((uint8_t *)"AT+CSQ",(uint8_t *)"OK",200)) { memcpy(SIM900_CSQ,UART8_RX_BUF+15,2); } return SIM_CREG_FAIL; //等待附着到网络 } } printf("sim900a OK!\r\n"); return SIM_OK; } uint8_t GSM_Dect(void) { uint8_t res; res=sim900a_work_test(); switch(res) { case SIM_OK: USART6SendString("GSM Test Self OK\r\n",strlen("GSM Test Self OK\r\n")); break; case SIM_COMMUNTION_ERR: USART6SendString("with GSM Communicate Fail，Waiting\r\n",strlen("with GSM Communicate Fail，Waiting\r\n")); break; case SIM_CPIN_ERR: USART6SendString("NO SIM Card\r\n",strlen("NO SIM Card\r\n")); break; case SIM_CREG_FAIL: USART6SendString("Registering on the network...\r\n",strlen("Registering on the network...\r\n")); USART6SendString("Current signal value: ",strlen("Current signal value: ")); USART6SendString(SIM900_CSQ,2); USART6SendString("\r\n",2); break; default: break; } return res; }
2.TCP连接
uint8_t SIM900A_CONNECT_SERVER(uint8_t *IP_ADD,uint8_t *PORT) { if(sim900a_send_cmd((uint8_t *)"AT+CGATT?",(uint8_t *)": 1",100)) return 1; if(sim900a_send_cmd((uint8_t *)"AT+CSTT",(uint8_t *)"OK",600)) return 3; if(sim900a_send_cmd((uint8_t *)"AT+CIICR",(uint8_t *)"OK",600)) return 4; if(!sim900a_send_cmd((uint8_t *)"AT+CIFSR",(uint8_t *)"ERROR",600)) return 5; sprintf((char*)dtbuf,"AT+CIPSTART=\"TCP\",\"%s\",\"%s\"",IP_ADD,PORT); if(sim900a_send_cmd((uint8_t *)dtbuf,(uint8_t *)"CONNECT OK",600)) return 6; memset(dtbuf, 0, sizeof(dtbuf)); return 0; } uint8_t SIM900A_CONNECT_SERVER_SEND_INFOR(uint8_t *IP_ADD,uint8_t *PORT) { uint8_t res; res=SIM900A_CONNECT_SERVER(IP_ADD,PORT); switch(res) { case 0: USART6SendString("CONNECT_SERVER_OK\r\n",strlen("CONNECT_SERVER_OK\r\n")); break; case 1: USART6SendString("Waiting for GSM module to attach to the network\r\n",strlen("Waiting for GSM module to attach to the network\r\n")); break; case 2: USART6SendString("Scene closing failed\r\n",strlen("Scene closing failed\r\n")); break; case 3: USART6SendString("CSTT Fail\r\n",strlen("CSTT Fail\r\n")); break; case 4: USART6SendString("CIICR Fail\r\n",strlen("CIICR Fail\r\n")); break; case 5: USART6SendString("CIFSR Fail\r\n",strlen("CIFSR Fail\r\n")); break; case 6: USART6SendString("CONNECT_SERVER_FAIL\r\n",strlen("CONNECT_SERVER_FAIL\r\n")); break; default: break; } return res; } uint8_t SIM900A_GPRS_SEND_DATA(uint8_t *temp_data) { if(sim900a_send_cmd("AT+CIPSEND",">",100)) return 1; if(sim900a_send_cmd(temp_data,NULL,0)) return 2; if(sim900a_send_cmd((uint8_t *)0x1a,(uint8_t *)"SEND OK",1500)) return 3; return 0; } uint8_t SIM900A_GPRS_CLOSE(void) { if(sim900a_send_cmd("AT+CIPCLOSE", (uint8_t *)"OK", 100)) return 1; return 0; } uint8_t GetRTCMData(uint8_t *data) { uint8_t res; connect: res = SIM900A_CONNECT_SERVER_SEND_INFOR((uint8_t*)IP_ADDRESS, (uint8_t*)IP_PORT); if(0 != res) { while(sim900a_send_cmd((uint8_t *)"AT+CIPSHUT",(uint8_t *)"OK",100)); USART6SendString("CONNECT_SERVER_RESTART!\r\n",strlen("CONNECT_SERVER_RESTART!\r\n")); goto connect; } send_data: res = SIM900A_GPRS_SEND_DATA(data); if(0 != res) { USART6SendString("RESTART_SEND_DATA!\r\n",strlen("RESTART_SEND_DATA!\r\n")); goto send_data; } send_gga: res = SIM900A_GPRS_SEND_DATA(SendGGA); if(0 != res) { USART6SendString("RESTART_SEND_GGA!\r\n",strlen("RESTART_SEND_GGA!\r\n")); goto send_gga; } return res; }