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Ring buffer using head and tale in STM32

July 29, 2019

buffer, circular, discovery, head, interrupt, nucleo, receive, ring, Rx, serial, STM32, stm32f103, stm32f4, tale, transmit, tx, uart

2

Whenever UART receives data in the ring buffer, the head gets incremented by 1. And when we read that data, tale gets incremented by 1.

Receive UART data using POLL INTERRUPT and DMA

July 4, 2018

admin

data, Rx, serial, STM32, stm32f103, stm32f4, uart

7

Starting with the simplest one i.e using the POLL method. The data is Received in blocking mode i.e the CPU will block every other operation until the data transfer is complete. This method is good to use if you are only using UART and nothing else otherwise all other operations will be affected.

UART Circular buffer using DMA and IDLE line detection

March 20, 2018

admin

buffer, circular, dma, idle, interrupt, line, Rx, serial, STM32, stm32f103, stm32f4, uart

51

UART have a feature called IDLE line detection and we are going to use this to sole the problem mentioned above. Idle line is detected on RX line when there is no received byte for more than 1 byte time length.

Receiving serial data in STM32

July 27, 2017

admin

example, HAL, lcd, receive, Rx, serial, STM32, uart

No Comments

We continuously check for incoming data and when data is received, display it on the lcd. 2.) Use interrupt. Microcontroller does it's normal operations, and whenever the data receiving completes, an interrupt is generated and ISR is executed, after completing ISR, control returns back to normal operation.