RE: esb nRF24LU and nRF51822

Petter Myhre — Fri, 24 Oct 2014 14:13:12 GMT

This is not an answer. Edit your question to include the information.

RE: esb nRF24LU and nRF51822

Sean — Fri, 03 Oct 2014 23:00:17 GMT

Hakon

Thanks for the help, I did miss the fact that my program exits. I must have accidentally deleted the for(;;) loop that was at the end of main(). So I added the for(;;) after CE_HIGH() and I still can't get the 2 micro-controllers to communicate with each other.

I added the code for the nRF51822 in case you want to look at it. Maybe I missed something else. Also, it might be good for others to see what's going on in case they ever want to do the same thing.

 #include "nrf_esb.h"
 #include "nrf_gpio.h"

/*****************************************************************************/
/** @name Configuration */
/*****************************************************************************/

// Define pipe
#define PIPE_NUMBER 0 ///< We use pipe 0 in this example

// Define payload length
#define TX_PAYLOAD_LENGTH 1 ///< We use 1 byte payload length when transmitting

// Data and acknowledgement payloads
static uint8_t my_tx_payload[TX_PAYLOAD_LENGTH];                ///< Payload to send to PRX. 
static uint8_t my_rx_payload[NRF_ESB_CONST_MAX_PAYLOAD_LENGTH]; ///< Placeholder for received ACK payloads from PRX.

/** @} */


 /*****************************************************************************/
 /** 
  * @brief Main function. 
  * 
  * @return ANSI required int return type.
  */
 /*****************************************************************************/
 int main()
 {
uint32_t i;
// Setup port directions
nrf_gpio_cfg_input(19,GPIO_PIN_CNF_PULL_Pullup);
nrf_gpio_cfg_output(16);

// Initialize ESB
(void)nrf_esb_init(NRF_ESB_MODE_PTX);

(void)nrf_esb_enable();  

// Add packet into TX queue
my_tx_payload[0] = (~nrf_gpio_pin_read(19)) | 0x80;
(void)nrf_esb_add_packet_to_tx_fifo(PIPE_NUMBER, my_tx_payload, TX_PAYLOAD_LENGTH, NRF_ESB_PACKET_USE_ACK);

   while(1)
   {
    // Optionally set the CPU to sleep while waiting for a callback.
		// __WFI();
	for(i=0; i<1000000; i++){}
		
	nrf_gpio_pin_toggle(16);	
     }
  }


  /*****************************************************************************/
  /** @name ESB callback function definitions  */
  /*****************************************************************************/


  // If an ACK was received, we send another packet. 
 void nrf_esb_tx_success(uint32_t tx_pipe, int32_t rssi){
// Read buttons and load data payload into TX queue
my_tx_payload[0] = (~nrf_gpio_pin_read(19)) | 0x80;  
(void)nrf_esb_add_packet_to_tx_fifo(PIPE_NUMBER, my_tx_payload, TX_PAYLOAD_LENGTH, NRF_ESB_PACKET_USE_ACK);
 }


  // If the transmission failed, send a new packet.
  void nrf_esb_tx_failed(uint32_t tx_pipe){
(void)nrf_esb_add_packet_to_tx_fifo(PIPE_NUMBER, my_tx_payload, TX_PAYLOAD_LENGTH, NRF_ESB_PACKET_USE_ACK);
 }

 void nrf_esb_rx_data_ready(uint32_t rx_pipe, int32_t rssi){
uint32_t my_rx_payload_length;
// Pop packet and write first byte of the payload to the GPIO port.
(void)nrf_esb_fetch_packet_from_rx_fifo(PIPE_NUMBER, my_rx_payload, &my_rx_payload_length);  
if (my_rx_payload_length > 0)
{
	 nrf_gpio_pin_set(16); // Button press is active low.
}
else
{
	nrf_gpio_pin_clear(16);
}
 }

 // Callbacks not needed in this example.
 void nrf_esb_disabled(void)
 {}

RE: esb nRF24LU and nRF51822

Håkon Alseth — Fri, 03 Oct 2014 13:36:34 GMT

Your main program exits. An embedded program should never exit. Add a while(1){} after "CE_HIGH();" and see if that fixes the issue.