HTTP POST with NCS v1.0.0-rc4

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Fri, 04 Oct 2019 14:17:26 GMT

The solution to this is to set CONFIG_NO_OPTIMIZATIONS to y, and increase the main stack size through CONFIG_MAIN_STACK_SIZE or place it in the data section instead of on the stack by declaring and initializing it outside of the main function.

Best regards,

Simon

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Thu, 01 Aug 2019 00:40:18 GMT

Hmm.. That is really strange. I was able to recreate the error message. I tried to minimize the project to try to locate the problem, and I eventually ended up with the following project, which was giving the same error:

#include <zephyr.h>
#include <net/socket.h>
#include <stdio.h>

int main(void)
{
     //char tmp_str2[2];
     char send_buf[4096];

     while (1) {
          
          }
	
}

However, if I set CONFIG_SIZE_OPTIMIZATION=y (and removed the optimize nothing config), then it worked fine.

I will report the problem internally. In the mean time, I guess you have to declare tmp_str as a temporary solution.

Best regards,

Simon

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Wed, 31 Jul 2019 07:26:16 GMT

Hi Simon,

I understand it, not yet 😞

Mvh

Hoang

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Mon, 29 Jul 2019 21:50:23 GMT

I am sorry for the delay. The support staff is reduced during the summer holidays, and you may experience delayed answers. Have you been able to resolve this issue?

Best regards,

Simon

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Fri, 26 Jul 2019 10:59:59 GMT

Dear Simon,

Ja, it works, but I got another "funny" error ( because I dont know why!!!)

I removed:

printk("Hello from start of main");
     char tmp_str[MAXLINE + 1];
     snprintf(tmp_str,500,
		"$GPGGA,%02d%02d%02d.200,%8.3f,N,%09.3f,W,1," 
		"12,1.0,0.0,M,0.0,M,,*", 2019, 07, 23, 59.3033, 10.454);
     //printf("tmp_string is: %s \n",tmp_str);

and just ran:

int main(void){

     printk("Hello from start of main \n");
     char send_buf[MAXLINE + 1];
     int send_data_len_post = snprintk(send_buf,
                                         500,
				         POST_TEMPLATE, HTTP_PATH,
				         HTTP_HOST, strlen(TEST_STRING),
				         TEST_STRING);

     printf("send_buf is: %s \n",send_buf);
     printk("send err: %d\n\r", send_data_len_post);
    
     //snprintk_post("OMG whyyyyyyyyyyyy \n"); 
     while (1) {
          //5 seconds delay
          k_sleep(5000);
          
          }
   }

it didnt work:

SPM: NS image at 0xc000
SPM: NS MSP at 0x20024cf8
SPM: NS reset vector at 0xec1d
SPM: prepare to jump to Non-Secure image.
***** Booting Zephyr OS v1.14.99-ncs2 *****
Hello from start of main %
***** USAGE FAULT *****
  Illegal use of the EPSR
***** Hardware exception *****
Current thread ID = 0x20021e9c
Faulting instruction address = 0xec1c
Fatal fault in essential thread! Spinning...

then, I tried to add an extra variable (but i will not use it !!!!)

char tmp[MAXLINE + 1];

and, it works:

SPM: NS image at 0xc000
SPM: NS MSP at 0x20024cf8
SPM: NS reset vector at 0xec1d
SPM: prepare to jump to Non-Secure image.
***** Booting Zephyr OS v1.14.99-ncs2 *****
Hello from start of main 
send_buf is: POST /? HTTP/1.1

Host: 142.93.37.192

Connection: keep-alive

Content-type: application/x-www-form-urlencoded

Content-length: 19



111 from nRF9160 DK 
send err: 153

I dont know why!!!????

Thanks,

mvh

Hoang

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Fri, 26 Jul 2019 07:04:17 GMT

Hi Simon

[quote userid="72692" url="~/f/nordic-q-a/49308/http-post-with-ncs-v1-0-0-rc4/200600"]CONFIG_NO_OPTIMIZATION=y in prj.conf[/quote]

Ja, thats what i am looking for.

Thanks so much

Mvh

Hoang Nguyen

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Thu, 25 Jul 2019 16:28:03 GMT

I am sorry, I was too quick to answer and gave you wrong information. The change that made it work was to set CONFIG_NO_OPTIMIZATION=y in prj.conf. I am attaching main.c and prj.conf down below.

prj.conf

CONFIG_BSD_LIBRARY=y
CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_NETWORKING=y
CONFIG_NET_BUF_USER_DATA_SIZE=1
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_NET_RAW_MODE=y
CONFIG_HEAP_MEM_POOL_SIZE=1024
# LTE link control
CONFIG_LTE_LINK_CONTROL=y
CONFIG_MAIN_STACK_SIZE=4096
CONFIG_NO_OPTIMIZATIONS=y

main.c

#include <zephyr.h>
#include <net/socket.h>
#include <stdio.h>
#include <uart.h>
#include <string.h>

#define MAXLINE 4096
#define HTTP_HOST "142.93.37.192"
#define HTTP_PATH "/"
#define TEST_STRING  "Hello from nRF9160 DK"

#define POST_TEMPLATE "POST %s? HTTP/1.1\r\n"\
		"Host: %s\r\n"\
		"Connection: keep-alive\r\n"\
	        "Content-type: application/x-www-form-urlencoded\r\n"\
		"Content-length: %d\r\n\r\n"\
		"%s"
int main(void)
{
     printk("Hello from start of main");
     char tmp_str[MAXLINE + 1];
     snprintf(tmp_str,500,
		"$GPGGA,%02d%02d%02d.200,%8.3f,N,%09.3f,W,1," 
		"12,1.0,0.0,M,0.0,M,,*", 2019, 07, 23, 59.3033, 10.454);
     //printf("tmp_string is: %s \n",tmp_str); 
     

     char send_buf[MAXLINE + 1];
     int send_data_len_post = snprintk(send_buf,
                                         500,
				         POST_TEMPLATE, HTTP_PATH,
				         HTTP_HOST, strlen(TEST_STRING),
				         TEST_STRING);

     printf("send_buf is: %s \n",send_buf);
     printk("send err: %d\n\r", send_data_len_post);
     while (1) {
          //5 seconds delay
          k_sleep(5000);
          
          }
	
}

Best regards,

Simon

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Thu, 25 Jul 2019 06:28:57 GMT

Hi Simon,

I tried to use snprintk(), but it did NOT work, the same error came with me

***** Booting Zephyr OS v1.14.99-ncs2 *****
tmp_string is: $GPGGA,2019072***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Precise data bus error
  BFAR Address: 0x61000064
***** Hardware exception *****
Current thread ID = 0x61000000
Faulting instruction address = 0xd998
Fatal fault in ISR! Spinning...

can you send me the full setup. thanks

Mvh

Hoang Nguyen

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Wed, 24 Jul 2019 21:18:03 GMT

Try using snprintk() instead, that worked for me.

Best regards,

Simon

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Tue, 23 Jul 2019 08:16:47 GMT

Hi Simon,

I tried with a simple example to test snprintf() function. 1 with LTE and without LTE

1. Without LTE:

# LTE link control
#CONFIG_LTE_LINK_CONTROL=y

#include <zephyr.h>
#include <net/socket.h>
#include <stdio.h>
#include <uart.h>
#include <string.h>

#define MAXLINE 4096
#define HTTP_HOST "142.93.37.192"
#define HTTP_PATH "/"
#define TEST_STRING  "Hello from nRF9160 DK"

#define POST_TEMPLATE "POST %s? HTTP/1.1\r\n"\
		"Host: %s\r\n"\
		"Connection: keep-alive\r\n"\
	        "Content-type: application/x-www-form-urlencoded\r\n"\
		"Content-length: %d\r\n\r\n"\
		"%s"
int main(void)
{

     char tmp_str[MAXLINE + 1];
     snprintf(tmp_str,500,
		"$GPGGA,%02d%02d%02d.200,%8.3f,N,%09.3f,W,1," 
		"12,1.0,0.0,M,0.0,M,,*", 2019, 07, 23, 59.3033, 10.454);
     printf("tmp_string is: %s \n",tmp_str); 
     

     char send_buf[MAXLINE + 1];
     int send_data_len_post = snprintf(send_buf,
				         500, 
				         POST_TEMPLATE, HTTP_PATH,
				         HTTP_HOST, strlen(TEST_STRING),
				         TEST_STRING);

     printf("send_buf is: %s \n",send_buf);
     printk("send err: %d\n\r", send_data_len_post);
     while (1) {
          //5 seconds delay
          k_sleep(5000);
          
          }
	
}

it works,

***** Booting Zephyr OS v1.14.99-ncs2 *****
tmp_string is: $GPGGA,20190723.200,  59.303,N,00010.454,W,1,12,1.0,0.0,M,0.0,M,,* 
send_buf is: POST /? HTTP/1.1

Host: 142.93.37.192

Connection: keep-alive

Content-type: application/x-www-form-urlencoded

Content-length: 21



Hello from nRF9160 DK 
send err: 155

and Now, without LTE:

# LTE link control
CONFIG_LTE_LINK_CONTROL=y

and error:

***** Booting Zephyr OS v1.14.99-ncs2 *****
tmp_string is: $GPGGA,201907***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Precise data bus error
  BFAR Address: 0x61000064
***** Hardware exception *****
Current thread ID = 0x61000000
Faulting instruction address = 0xd998
Fatal fault in ISR! Spinning...

snprintf() and LTE_LINK_CONTROL conflict !?

Thanks,

Mvh

Hoang Nguyen

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Mon, 22 Jul 2019 12:19:18 GMT

Dear Simon

I tried with your suggestion: ncs v1.0.0

and your example: ( change to my webserver address)

 char send_buf[] = "POST /? HTTP/1.1\r\n"\
		"Host: 142.93.37.192\r\n"\
		"Connection: keep-alive\r\n"\
	    "Content-type: application/x-www-form-urlencoded\r\n"\
		"Content-length: 50\r\n\r\n"\
		"hng12 34 566 678899 01233 345678 99876543 2765432654";

and it works,

your code, you did NOT use function snprintf()

char send_buf[MAXLINE + 1];
	      
int send_data_len_post = snprintf(send_buf,
				         500, 
				         POST_TEMPLATE, HTTP_PATH,
				         HTTP_HOST, strlen(PostString),
				         PostString);

snprintf() does NOT work !!

I want to use snprintf() because I want to assign my "PostString" to send_buf()

I am confusing: why snprintf() does NOT work? if i use your suggestion, how can i assign my data to send_buf()

Thanks so much,

Yeah, 1 more thing, about NCS v1.0.0-rc4, I will tell you why I used this version: We ( my company) got the support from Nordicsemi and Bjørn Kvaale came to help us. and we tried ncs v1.0.0, asset_tracker DIDNT work, it didnt show the real data of GPS, so Bjørn suggested use ncs v.1.0.0-rc4, then asset_tracker WORKs.

Thanks again

Hoang Nguyen

RE: HTTP POST with NCS v1.0.0-rc4

Hoang — Mon, 22 Jul 2019 06:43:30 GMT

Hi @Simon

Thanks so much, I just backed from vocation, I will try your suggestion and contact with you soon

Mvh,

Hoang Nguyen

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Mon, 08 Jul 2019 11:02:04 GMT

I was able to post to a webserver, with ncs v1.0.0 and modem v1.0.0. Could you test my attached example?

devzone.nordicsemi.com/.../http_5F00_post.zip

Best regards,

Simon

RE: HTTP POST with NCS v1.0.0-rc4

Simon — Sun, 07 Jul 2019 20:01:28 GMT

I am sorry for the long delay. I am currently looking into your issue and will try to provide you with an answer as soon as possible.

Best regards,

Simon