STM32F411 to NRF51822 to Android Phone

[royalmdm]

Development Environment

S130 / SDK_12.3.0 Central Central NRF51 DONGLE

S130 / SDK_12.3.0 Central Peri NRF51822 + STM32F411

 

BUART_BAUDRATE_BAUDRATE_Baud115200

Hi, I am trying to implement BLE communication by sending STM32 data to the NRF.

I tested  STM32 UART communication to NRF51822 by Terminal Program,'Teraterm'.  and checked normal operation.

and, I tested nrf51822 and nrf51 dongle communication by Terminal Program,'Teraterm'.  and checked normal operation.

However, sending data from STM32 to NRF51 DONGLE fails.

I think I made wrong code for NRF51822. 

 

now, I am using Nrf_BLE_NUS_Services.

here is my code.

-------------------------------------------------------

uint8_t data_array[20];
data_array[0] = NRF_UART0->TXD;

....

for(;;)

{

 ble_nus_string_send(&m_nus, data_array, sizeof(data_array));
 nrf_delay_ms(10);
 power_manage();

}

-------------------------------------------------------

It is the most basic code, but it does not make this part.
By the end of this week, code must be created to interact with STM32 and NRF51 DONGLE. 
I'd appreciate your help.

[royalmdm]

As you said, I am trying to find a reason why it shouldn't be revised from the beginning.

First, I tried to communicate using nrf51822 and Android phones. and I did. NRF RTT confirmed sending and receiving data.

Second, it started Nrf51822 and UART communication from STM32 to UART, and matched pin map and baudrate.

Now I use the NRF RX pin 4,  TX pin is 5..

But, in the example app_uart, button is using pin 4. There is no pin 4 on my board, so I did not modify it at that time. now, I started to change.

First, I changed the pinmap of button and Ble started to stop working. So I annotated the button, but this time, I started to get an error. I immediately began to sort out the functions of the button.

And after that, Finally, I sent a string using the printf function from nrf to stm32. There's a phrase coming out of the stm32 debug port.

But still Data sent from stm32 to nrf are not verified. 

You seem to be making some progress. 
Thank you.