Hi forum,
I am working on nrf52832, using sdk 15.0.0. I want to send the data(command) from esp32 to nRF52832 through Rx ,Tx . I have done connections rx,tx,gnd . I can't able to transmit and receive the data why ? i have used ble_app_uart examples , i didn't change anything , just included one data to print .
nRF52832 esp32
8 pin Rx-----> Tx 17pin
9 pin Tx ------> Rx 16pin
please someone help me to slove this problem.
Yes, please check this
please check below code ,
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "app_uart.h"
#include "app_error.h"
#include "nrf_delay.h"
#include "nrf.h"
#include "bsp.h"
#include "nrf_uart.h"
#define UART_TX_BUFF_SIZE 128 // TX buffer size
#define UART_RX_BUFF_SIZE 128 // RX Buffer size
#define UART_HWFC APP_UART_FLOW_CONTROL_DISABLED
// A simple error handler for uart if something goes wrong...
void uart_err_handle(app_uart_evt_type_t * p)
{
}
int main(void)
{
uint32_t err_code; // a variable to hold the error value
bsp_board_init(BSP_INIT_LEDS); // initialize leds
const app_uart_comm_params_t com_params = // struct to hold the uart configurations
{
RX_PIN_NUMBER,
TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
UART_HWFC, // hardware flow control disabled
false, // parity = none
NRF_UART_BAUDRATE_115200 // set this baud rate for communication
};
// pass all the values to this function to initialize the UART module
APP_UART_FIFO_INIT(&com_params, UART_RX_BUFF_SIZE, UART_TX_BUFF_SIZE, uart_err_handle, APP_IRQ_PRIORITY_LOWEST, err_code);
APP_ERROR_CHECK(err_code); // check if everything initialized correctly
// Print a start msg over uart port
printf("Hello PC from nordic Device!!\r\n");
while(true)
{
uint8_t cr; // create a variable to hold the UART char data
while(app_uart_get(&cr) != NRF_SUCCESS); // wait here until it receives a char from pc
if(cr == 't') // check if the received char is t
{
bsp_board_leds_on(); // turn on all the leds
printf("Leds Turned On!!\r\n"); // print out the state of leds
}
if(cr == 'k') // check if the received chart is k
{
bsp_board_leds_off(); // turn off all the leds
printf("Leds Turned off!! \r\n"); // print out the state of leds
}
} // while loop closed
} // main function closed
/** @} */
Is their any code for reference of UART on nrf52832.
Yes, please check this
please check below code ,
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "app_uart.h"
#include "app_error.h"
#include "nrf_delay.h"
#include "nrf.h"
#include "bsp.h"
#include "nrf_uart.h"
#define UART_TX_BUFF_SIZE 128 // TX buffer size
#define UART_RX_BUFF_SIZE 128 // RX Buffer size
#define UART_HWFC APP_UART_FLOW_CONTROL_DISABLED
// A simple error handler for uart if something goes wrong...
void uart_err_handle(app_uart_evt_type_t * p)
{
}
int main(void)
{
uint32_t err_code; // a variable to hold the error value
bsp_board_init(BSP_INIT_LEDS); // initialize leds
const app_uart_comm_params_t com_params = // struct to hold the uart configurations
{
RX_PIN_NUMBER,
TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
UART_HWFC, // hardware flow control disabled
false, // parity = none
NRF_UART_BAUDRATE_115200 // set this baud rate for communication
};
// pass all the values to this function to initialize the UART module
APP_UART_FIFO_INIT(&com_params, UART_RX_BUFF_SIZE, UART_TX_BUFF_SIZE, uart_err_handle, APP_IRQ_PRIORITY_LOWEST, err_code);
APP_ERROR_CHECK(err_code); // check if everything initialized correctly
// Print a start msg over uart port
printf("Hello PC from nordic Device!!\r\n");
while(true)
{
uint8_t cr; // create a variable to hold the UART char data
while(app_uart_get(&cr) != NRF_SUCCESS); // wait here until it receives a char from pc
if(cr == 't') // check if the received char is t
{
bsp_board_leds_on(); // turn on all the leds
printf("Leds Turned On!!\r\n"); // print out the state of leds
}
if(cr == 'k') // check if the received chart is k
{
bsp_board_leds_off(); // turn off all the leds
printf("Leds Turned off!! \r\n"); // print out the state of leds
}
} // while loop closed
} // main function closed
/** @} */
Is their any code for reference of UART on nrf52832.