UART on nrf 9160 for nrf 52840

Question

Hello Nordic Support Team

I need desperate help to get my proof of concept working. I have been able to prove that the applicational concepts work on the nRF52840 and now it is only up to proving that the nrf9160 can receive an SMS, request the data from the nrf52840, and send the data via SMS back. I have no background in electronics so it is very difficult or impossible for me to understand some of the examples. Searching for weeks I stumble upon this example which is very close to what I need and can understand but it is not working for the nrf52840. The following statement "printk("%s", data_array);" does not function. Can you make it to work for the nrf52840. I prepared to pay for it. Just let me know the costs. Here are my findings:

/

Fullscreen Help Request.txt Download

/* Data received by the nrf 52840 from the nrf 9160  when the 
print statement is placed in this part of the program 
                       printk("%s",data_array);
		       index = 0;
		       memset(data_array, 0, sizeof(data_array));
The nrf 9150 use the following progam to send the data

*/ 
*** Booting Zephyr OS build v2.4.99-ncs1  ***
UART sample start!
.** Booting Zephyr OS build v2.4.99-ncs2  ***



Flash regions		Domain		Permissions



00 00 000000 0x08000 	Secure		rwxl



01 31 x00 0x100000 	Non-Secure	rwxl







Non-sr lable region 0 placed in flash region 0 with size 32.







ÿÿ[02]I[19]}U[05]IQ[15][01][02][02][02][02][02][02][02][02][02]•ÕÉ•-%Aº[02]I[19]}Q]%5[01][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-Â[02]I[19]}MA%5[01][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-Ê[02]I[19]}Q%5[15]I[01][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…‚[02]I[19]}Q%5[15]I[01][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…Š[02]I[19]}Q%5[15]I[01][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…’[02]I[19]}M[05][05][11]

[01][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…š[02]I[19]}A]5[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…¢[02]I[19]}A]5[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…ª[02]I[19]}A]5[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…²[02]I[19]}A]5[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…º[02]I[19]}][11]Q[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…Â[02]I[19]}%A

[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-…Ê[02]I[19]}Y5

[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-‰‚[02]I[19]}[19]AU[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-‰Š[02]I[19]}[15][1D]U[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-‘’[02]I[19]}[15][1D]U[01][02][02][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-™š[02]I[19]}[11]AA%

[01][02][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-‰¢[02]I[19]}I[15][1D]U1[05]Q=IM[01][02][02][02][02]½¹M•ÕÉ•=-‰ª[02]I[19]}[1D]A%=Q[15][01][02][02][02][02][02][02][02][02]½¹M•ÕÉ•=-A5M¥µ…•…ÑÁ:[05]¥[02]M5MA…ÑÁŠ‚²*A5MÉ•Í•ÑÙ•Ñ½É…ÑÁ‘‘A5É•Á…É•Ñ½©ÕµÁÑ½9½¹M•ÕÉ•¥µ…•*** Booting Zephyr OS build v2.4.99-ncs2  ***



ZT01201535554321



ÿ'SSS[13]Hø7SSS[13]HøZT01201535554321



ZT01201535554321



ZT01201535554321



Þ˜NMSS[13]HøZT01201535554321



ZT01201535554321



¯T0120153555432

þLæMSS[13]Høÿü’‚Šªšªªª¢š’Šþþ–Íªªª¢š’Šþ

/* The following code is used to out the above result  if the printk statement
is not a comment. The current version does not print an results with the printk("%s", data_array);  statement 
at the location after "if ((index == UART_BUF_SIZE) ||
			   (data_array[index - 1] == '\n') ||
			   (data_array[index - 1] == '\r')) "*/
#include <zephyr.h>
#include <sys/printk.h>
#include <drivers/uart.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define UART_BUF_SIZE 1024

void uart_cb(struct device *uart)
{
	static uint8_t data_array[UART_BUF_SIZE];
    static uint8_t index = 0;
	
	uart_irq_update(uart);
	
	if (uart_irq_rx_ready(uart)) {
		
		int data_length;

		data_length = uart_fifo_read(uart, &data_array[index],
					     UART_BUF_SIZE-index);
		index += data_length;
		
                
		if (index > 0) {
                 // printk("Datalength = %d", data_length);
			// printk("%s", data_array);
			if ((index == UART_BUF_SIZE) ||
			   (data_array[index - 1] == '\n') ||
			   (data_array[index - 1] == '\r')) {
                            //printk("index: %c \n",data_array[index - 1]);
				// printk("index: %d \n",index);
				printk("%s", data_array);
				
				/*char dest[strlen(data_array)];
				strcpy(dest, data_array);
				printk("%s", dest);
				const char ch = ',';
				char *ret;
				ret = strchr(data_array, ch);
				
				if(ret != NULL){
				printk("%s", ret);*/
				}
                               
			}


                       // printk("%s",data_array);
		       index = 0;
		       memset(data_array, 0, sizeof(data_array));

		}
	}
  
  


void main(void)
{
        
	struct device *uart = device_get_binding("UART_0");

	uart_irq_callback_set(uart, uart_cb);
	uart_irq_rx_enable(uart);
	printk("UART sample start!\n");
	while (1) {
		k_cpu_idle();
                
	}
}
 
/* prj file settings */
CONFIG_SERIAL=y
CONFIG_TRUSTED_EXECUTION_NONSECURE=y
CONFIG_UART_INTERRUPT_DRIVEN=y

#
# Copyright (c) 2019 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-BSD-5-Clause-Nordic
#
# General config
#CONFIG_NEWLIB_LIBC=y
CONFIG_ASSERT=y
CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_REBOOT=y

# Network
#CONFIG_NETWORKING=y
#CONFIG_NET_NATIVE=n
#CONFIG_NET_SOCKETS=y
#CONFIG_NET_SOCKETS_OFFLOAD=y

# BSD library
#CONFIG_BSD_LIBRARY=y

# Stacks and heaps
CONFIG_MAIN_STACK_SIZE=8192
CONFIG_HEAP_MEM_POOL_SIZE=16384



#CONFIG_UART_1_NRF_UARTE=y
#CONFIG_UART_1_NRF_FLOW_CONTROL=y
#CONFIG_UART_INTERRUPT_DRIVEN=y

/* Code on the nrf 9160  to transmit the data */

include <zephyr.h>
#include <sys/printk.h>

void main(void)
{         
   char message[]="ZT01201535554321\n"; 
     /* for(int i=0; i <sizeof(message); i++)
          {     
	  printk("%c",message[i]);
         // k_sleep(K_MSEC(200));
        }
        printk("\n"); */
 for(int i=0; i < 20; i++)
 {
      printk("%s",message);
      k_sleep(K_MSEC(200));
  }     
}

UART on nrf 9160 for nrf 52840

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