As a newbie, I have a project involving an STM32 Blue Pill microcontroller. The project's objective is to read data from a DHT11 sensor and transmit it via a LoRa module.
Individually, I have successfully tested both modules. I can read data from the DHT11 and send and receive dummy data between two LoRa modules. However, when I attempt to combine these two modules in my project, I encounter issues. Specifically, I can't read data from the DHT11 anymore, and the LoRa module fails to transmit.
I'm using Timer1 to create micro-delays for the DHT11 sensor, and I'm using SPI1 for the LoRa module. Could this be causing a conflict between the two modules?
I attached the pinout:
I can explain briefly my problem:
If I use code only for DHT11, it can read data from the DHT11 perfectly. But when I try to combine with LoRa (RF Lora SX1278 433Mhz Ra-02), it gets stuck at while ((HAL_GPIO_ReadPin (DHT11_PORT, DHT11_PIN)));
It never goes to low, and I don't know why :((
Here is my GitHub project : My Project I use the STM32CubeIDE Platform.
SPI1 is on PA5/6/7. And a LoRa module (which one are you using?) requires a few more GPIOs. So check that the pins you are using for the LoRa module don't conflict with the DHT11 and Timer1. I have STM32 projects with LoRa, I2C, and more, that work flawlessly.
Maybe show some code and a pinout.