HOW TO READ UART FROM PZEM 004T

[BAl K.1]

I need help with using pzem 004t in stm32f405 with uart communication. i have check this source willyvamp/STM32F103C8T6-PZEM004T-DHT11: HAL STM32 (github.com) but still dont get the data form uart. please help

[Tesla DeLorean]

Your code is going to be different, using a different board and different pins.

Perhaps provide that and how you're wiring this all up so some conclusion about why it is not working can be drawn.

[BAl K.1]

thankyou for your quickc response.

yes i do, i change the uart handle and some other but still dont work. it makes me confused what is the problems

[Javier1]

provide that and how you're wiring this all up

[Javier1]

are you trying to programm a stm32f405 with code compiled for stm32f103?

Edit: i read the datasheet and it doesnt say anything about what Uart configurations are needed.

But looking at the github progect you shared , they are using huart2 to interface this sensor.

And these are the uart configurations you need:

static void MX_USART2_UART_Init(void)
{
 
  /* USER CODE BEGIN USART2_Init 0 */
 
  /* USER CODE END USART2_Init 0 */
 
  /* USER CODE BEGIN USART2_Init 1 */
 
  /* USER CODE END USART2_Init 1 */
  huart2.Instance = USART2;
  huart2.Init.BaudRate = 9600;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART2_Init 2 */
 
  /* USER CODE END USART2_Init 2 */
 
}

just take any tutorial and staert from there

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=video&cd=&cad=rja&uact=8&ved=2ahUKEwiDqMDo1vj7AhVFTaQEHcPMAzQQtwJ6BAgJEAI&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dl5msGz2tZP0&usg=AOvVaw0T0AcJVZ4WIco1h8sbOXQr

[BAl K.1 · Accepted solution]

thank you for your response sir, i solved it by using manual function in this reference (363) PZEM-004T + STM32/Cortex измерение �?нергии + в�?�?кое - YouTube

[Javier1]

tick yourself as best answer then