About PCong.1

PCong.1 · 2022-04-12

Hello ST Community,I use two UARTs at the same time, 1 to communicate with a sensor and the other to communicate with the BlueNGR-M2SP BLE module.The UART2 is configured with DMA IDLE because the length of the frame I receive varies and the UART1 has...

PCong.1 · 2022-03-21

I try to read the data from BlueNRG-M2SP on an android application. For that with my STM32 I send to the UART a "u". On the application, I scan the services and Characteristic and I only find a write Characteristic but no read Characteristic, and I c...

PCong.1 · 2022-03-11

I designed a PCB with an STM32L412RBT6 and a BlueNRG-M2SP, and I checked the connection and I can't read data from the bluetooth module and I can't send data from the STM32.I made the following code:stm32l4xx_it.cvoid USART2_IRQHandler(void) { /* U...

PCong.1 · 2022-02-16

I have a sensor that can communicate via UART, I send a command and the sensor answers me with a hexadecimal frame.I can have distance, angle, velocity values. I know how to store the frame in a buffer but I don't know how to store it in hexa to kee...

PCong.1 · 2022-02-02

Hello ST Community.I have to controle a LED strip with DMX drivers LED, but i dont know how to select the chanel and the value.i already have the RS485 module to transmite the USART signal but i dont how and what to send to controle the strip and mak...

PCong.1 · 2022-04-12

without: __HAL_UART_ENABLE_IT(&huart1, UART_IT_RXNE); //Enable the UART1 interfaceI can't read the data, and without that: __HAL_DMA_DISABLE_IT(&hdma_usart1_rx, DMA_IT_HT);//Disable the UART1 interface I can receive data but I still can't send data w...

PCong.1 · 2022-04-12

i check it inside the if if(huart->Instance == USART2){ BLE_recv[j++] = BLE_Byte; if (j > 1) j = 0;

PCong.1 · 2022-04-12

I will try without the activation and deactivation. of the RX interrupt

PCong.1 · 2022-03-28

I checked 4 times to make sure the string was transmitted and the string is sent.About the code, I tried to do like the printf function which can turn an int into a string and put end charactersint a = 10; printf("%d\r\n", a);, but I found how to do ...

PCong.1 · 2022-03-25

my environment is simple the next I managed to get the "u" on the notification (the solution was to add the end character CR+LF).The problem is that the BLE doesn't want to read an int without an end character and I can't do like a printf because it ...

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User Activity

Why UART1 block UART2

How to have a READABLE Characteristic to a BlueNRG-M2SP

Why i cant read and send data between UART2 of a STM32L412RBT6 (PA2 and PA3) and the BlueNRG-M2SP UART(DIO8 and DIO11)

how to store signed hexadecimal data from a sensor and identify if the hex is negative or positive?

How to control a LED strip with the DMX512 decoder and the UCS512C4 IC driver with an STM32?

Re: Why UART1 block UART2

Re: Why UART1 block UART2

Re: Why UART1 block UART2

Re: How to have a READABLE Characteristic to a BlueNRG-M2SP

Re: How to have a READABLE Characteristic to a BlueNRG-M2SP