STM32 USART Lecture 5 – USART Driver API: Tx and Rx assignment

 

USART Driver API: Tx and Rx assignment

 

 

Now let’s attempt data send, and data receive API with blocking and non-blocking mode.

Steps:

1. Download the file attached in the resource section, and the file name is USART_DataTxRxAPIs.c (Figure 1).

Tx and Rx assignment
Figure 1. USART_DataTxRxAPIs.c file.

 

2. In the downloaded file, the USART send data, receive data, send data with IT and receive data with IT APIs are implemented partially. There are a couple of TODOs, which you have to resolve.

The implementation of APIs is similar to the way you coded for I2C and SPI.

USART Driver API: Tx and Rx assignment
Figure 2. Partially implemented APIs with comments and TODOs.

 

3. When you code for these APIs, you can see that they use a couple of USART flags. These flags should be created in the usart_driver.h file similar to I2C and SPI.

USART Driver API: Tx and Rx assignment
Figure 3. USART flags.

In the following article, let’s see USART Driver API: Send data.

 

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