Hello,
I am using a custom board that has a DSP and the Lairds BLE module BL651 that has nRF52810. I have written a simple program that sends a test data byte to the DSP and the DSP should return a response with a corresponding data. The uart_read function in DSP is a blocking function so I first run the DSP program and that will wait to receive the data from the BL651. The problem I am facing is when I run the program for BLE it directly goes and gets stuck at NRF_BREAKPOINT_COND in app_error_weak.c and hence there is no further process that occurs. The DSP still waits for the data.
Why is this happening with the BLE? I tried to debug this and when it enters the APP_ERROR_CHECK there in app_error_weak.c it gets stuck at NRF_BREAKPOINT_COND. I checked the err_code before entering APP_ERROR_CHECK and it is 0.
Please do help me with this as it is very urgent for me in my work. I am attaching the full code below.
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/** @file
* @defgroup uart_example_main main.c
* @{
* @ingroup uart_example
* @brief UART Example Application main file.
*
* This file contains the source code for a sample application using UART.
*
*/
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include "app_uart.h"
#include "app_error.h"
#include "nrf_delay.h"
#include "nrf.h"
#include "nrf_gpio.h"
#include "bsp.h"
#if defined (UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined (UARTE_PRESENT)
#include "nrf_uarte.h"
#endif
//#define ENABLE_LOOPBACK_TEST /**< if defined, then this example will be a loopback test, which means that TX should be connected to RX to get data loopback. */
#define MAX_TEST_DATA_BYTES (15U) /**< max number of test bytes to be used for tx and rx. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
volatile bool readFlag = true;
uint8_t pattern[10240];
void uart_error_handle(app_uart_evt_t * p_event)
{
readFlag = false;
if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
{
APP_ERROR_HANDLER(p_event->data.error_communication);
}
else if (p_event->evt_type == APP_UART_FIFO_ERROR)
{
APP_ERROR_HANDLER(p_event->data.error_code);
}
}
#ifdef ENABLE_LOOPBACK_TEST
/* Use flow control in loopback test. */
#define UART_HWFC APP_UART_FLOW_CONTROL_ENABLED
/** @brief Function for setting the @ref ERROR_PIN high, and then enter an infinite loop.
*/
static void show_error(void)
{
bsp_board_leds_on();
while (true)
{
// Do nothing.
}
}
/** @brief Function for testing UART loop back.
* @details Transmitts one character at a time to check if the data received from the loopback is same as the transmitted data.
* @note @ref TX_PIN_NUMBER must be connected to @ref RX_PIN_NUMBER)
*/
static void uart_loopback_test()
{
uint8_t * tx_data = (uint8_t *)("\r\nLOOPBACK_TEST\r\n");
uint8_t rx_data;
// Start sending one byte and see if you get the same
for (uint32_t i = 0; i < MAX_TEST_DATA_BYTES; i++)
{
uint32_t err_code;
while (app_uart_put(tx_data[i]) != NRF_SUCCESS);
nrf_delay_ms(10);
err_code = app_uart_get(&rx_data);
if ((rx_data != tx_data[i]) || (err_code != NRF_SUCCESS))
{
show_error();
}
}
return;
}
#else
/* When UART is used for communication with the host do not use flow control.*/
#define UART_HWFC APP_UART_FLOW_CONTROL_DISABLED
#endif
/**
* @brief Function for main application entry.
*/
int main(void)
{
nrf_gpio_cfg_output(27);
uint32_t err_code;
bsp_board_init(BSP_INIT_LEDS);
const app_uart_comm_params_t comm_params =
{
RX_PIN_NUMBER,
TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
UART_HWFC,
false,
#if defined (UART_PRESENT)
NRF_UART_BAUDRATE_115200
#else
NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_error_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
uint8_t command[] = {0x02,0x84,0x85,0x89,0x90,0x91,0x93,0x95,0x96};
//pattern = (uint8_t*) malloc(16384 * sizeof(uint8_t));
int cmd_i = 0;
//int data_i = 0;
char tst_cmd = '4';
uint8_t tst_rsp = '9';
int i = 0;
while (true)
{
while(app_uart_put(tst_cmd) != NRF_SUCCESS);
while(app_uart_get(&tst_rsp) != NRF_SUCCESS);
if(tst_cmd == tst_rsp)
{
//printf("Response received \n");
}
//Send pattern key.
while(app_uart_put(command[cmd_i]) != NRF_SUCCESS);
//Command sent successfully
while(i<10240)
{
if(app_uart_get(&pattern[i]) == NRF_SUCCESS)
{
i++;
}
}
printf("%d", i);
i = i+0;
}
}
/** @} */
Thanks & Regards
Sudeep R J
