How to send data after AT+QMTPUB >

Hello guys,
Hello @Job.Bao-Q,
How do i publish data after this AT cmd?

Hi Nishikant:
Could you tell me the software version of the module?(excute ATI to check)
What tool did you use for testing?
Usually,after the response >, you can input the data to be sent. Tap CTRL+Z
to send, and tap ESC to cancel the operation.

Thanks @Winnie.Xi-Q for replying.
I am using

Quectel_Ltd
Quectel_M66
Revision: M66FAR02A08BT

I am sending command to module via STM32F03xx controller using UART.
can you tell me the exact sequence of gprs activation at commands ?

1)You can execute at+creg? and at + cgreg? to confirm whether the injection network is successful.
2)If the network is successful,you can do the 3)
3)Here is an example of activating the PDP for your reference
1.AT+QIFGCNT=0
2.AT+QICSGP=1,“cmnet”
3.AT+QIREGAPP
4.AT+QIACT

Thanks for replying.
I am facing some issues implanting the commands.
here is my code.

Blockquote

HAL_Delay(3000);

char rx_buff[20];

if (HAL_UART_Transmit(&huart1,(uint8_t *)"AT\r\n",4,10) == HAL_OK)
{
	HAL_UART_Receive(&huart1,(uint8_t *)rx_buff,12,15);

	HAL_UART_Transmit(&huart2,(uint8_t *)rx_buff,11,15);

}
HAL_Delay(3000);

/*
HAL_Delay(2000);
HAL_UART_Transmit(&huart1,(uint8_t *)“ATI\r\n”,7,10);
HAL_UART_Receive(&huart1,(uint8_t *)ati_,70,80);
HAL_UART_Transmit(&huart2,(uint8_t *)ati_,70,80);
HAL_UART_Transmit(&huart2,(uint8_t *)"\r\n\r\n",8,10);
*/
HAL_UART_Transmit(&huart2,(uint8_t *)"\r\n",2,5);

//---------------------------------------------------------------------------------
HAL_Delay(3000);
char qiop[]="AT+QMTOPEN=?\r\n";
char qiopen[250];


len = strlen(qiop);

if (HAL_UART_Transmit(&huart1,(uint8_t *)qiop,len,20) == HAL_OK)
{
	HAL_UART_Receive(&huart1,(uint8_t *)qiopen,58,70);

	len = strlen(qiopen);

	HAL_UART_Transmit(&huart2,(uint8_t *)qiopen,58,70);

}
HAL_UART_Transmit(&huart2,(uint8_t *)"\r\n",2,5);

//---------------------------------------------------------------------------------
HAL_Delay(3000);

char main_buff[]="AT+QMTOPEN=0,\"xx.xx.17.86\",8883\r\n";
char iopen[250];
len = strlen(main_buff);

if (HAL_UART_Transmit(&huart1,(uint8_t *)"AT+QMTOPEN=0,\"xxx.xx.17.86\",8883\r\n",34,50) == HAL_OK)
{
	HAL_UART_Receive(&huart1,(uint8_t *)iopen,100,200);

	len = strlen(iopen);

	HAL_UART_Transmit(&huart2,(uint8_t *)iopen,100,100);

}
HAL_UART_Transmit(&huart2,(uint8_t *)"\r\n",2,5);

indent preformatted text by 4 spaces

and output on tera term is

AT
+8"
QT+QMTOPEN=?
+QMTOPEN: (0-5),"<host_name>",

OK

AT+QMTOPEN=0,“xyz.zyx.17.86”,8883
+QMTOPEN: (0-5),"<host_name>",

OKö5M4ó£?ÿH

where i am doing wrong?
please get me out from this problem.
there are some unwanted character after OK

now i am getting this o/p

AT

OK
+

AT+CREG=1
OK
AT+QMTOPEN=?
+QMTOPEN: (0-5),"<host_name>",

OK
AT+QMTOPEN=0,“139.59.17.86”,8883
OK

+QMTOPEN: 0,2

image
It means MQTT identifier is occupied.Please use AT+QMTCLOSE=0 to close it and then try to open it again.

How do i add ctrl+Z in my command to pub?
if (HAL_UART_Transmit(&huart1,(uint8_t *)“AT+QMTPUB=0,1,1,0,“GPS_loc”\r\n”,len+2,150) == HAL_OK)
{
HAL_UART_Receive(&huart1,(uint8_t *)mconn,250,700);

	len = strlen(mconn);

	HAL_UART_Transmit(&huart2,(uint8_t *)mconn,250,500);

}

If you don’t know how to execute Ctrl + Z, you can publish a message at a specified length.
The following is the corresponding instruction description:
image

`char datapub[50];//="AT+QMTPUB=0,1,1,0,\"GPS_loc\",10"\r\n";
char pub[250];
memset(pub,0,250);
memset(datapub,0,50);
sprintf(datapub,"%s""%s""%s\r\n","AT+QMTPUB=0,1,1,0","\"GPS_loc\"",",10");

len = strlen(datapub);

if (HAL_UART_Transmit(&huart1,(uint8_t *)datapub,len+2,150) == HAL_OK)
{

	HAL_UART_Receive(&huart1,(uint8_t *)pub,100,100);


	len = strlen(pub);

	HAL_UART_Transmit(&huart2,(uint8_t *)pub,100,100);
	HAL_UART_Transmit(&huart1,(uint8_t *)"NISHIKANT",9,10);

}`

AT+QMTCLOSE=0
OK

+QMTCLOSE: 0,0
AT+QMTOPEN=0,“139.59.17.86”,8883
OK

+QMTOPEN: 0,0
AT+QMTCONN=0,“GSMsdjhf”,“username”,“password”
OK

+QMTCONN: 0,0,0
AT+QMTPUB=0,1,1,0,“GPS_loc”,10
+CME ERROR: 3518

Is this correct?

Thanks @Winnie.Xi-Q, Now i am able pub the data.

You are welcome. Please contact us if you have other questions. :slightly_smiling_face: