About warning while using the HAL_UART_Transmit

Question

I got warning while using this HAL_UART_Transmit(&huart2,"AT\n\r",strlen(ATcommand),1000); line of code, I am using stm32f412zgt6 controller with stm32 cubeide

I wants to overcome from the existing warning if anyone know the reason please make it to my notification and if anyone know whether stm32 or esp32 is good for real time application please make it to my notification

Answer 1

Try to add a typecasting before your command, it will fix USART warnings

Your Implementation:

HAL_UART_Transmit(&huart2,"AT\n\r",strlen(ATcommand),1000);

Correct Implementation:

HAL_UART_Transmit(&huart2,(uint8_t*)"AT\n\r",strlen(ATcommand),1000);