Embedded System Tutorial UART - Revision history

Sree at 20:05, 25 January 2019

2019-01-25T20:05:38Z

2017-09-27T03:05:14Z

2017-03-02T06:21:16Z

‎Assignment

2017-03-02T06:20:34Z

‎Assignment

2017-03-02T06:19:45Z

‎Assignment

2017-03-02T02:24:55Z

‎Assignment

2017-03-01T03:19:06Z

‎Assignment

2017-03-01T03:18:33Z

‎Assignment

2015-02-28T18:29:48Z

‎Software Driver

2014-09-15T05:43:41Z

‎Introduction

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 == Introduction ==
 The objective of this lesson is to understand UART, and use two boards and setup UART communication between them.
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 *: Write uart_putchar(char) and uart_getchar() functions
 *: Interface your UART with someone else's board, and test the communication.

@@ Line 96: / Line 96: @@
 *: Connect your UART to your partner's UART (to his board)
 *: Prove that you can send/receive data across multiple boards.
 * <b>Extra Credit</b>:
 *: Use Uart interrupt to queue the received data to avoid polling.  You just need to enable UART RX interrupt and then hookup an interrupt callback to do the receive.
 * <b>Steps</b>
 *: Locate the physical pins for a UART that is not already used by your board

@@ Line 90: / Line 90: @@
 == Assignment ==
-*  Assignment Outline
+* <b>Assignment Outline</b>
 *: Form 2 people teams for this assignment.
 *: Write a driver for UART2 or UART3
@@ Line 100: / Line 100: @@
 *: Upload Logic Analyzer Screenshot for the UART Frame.
-*  Steps
+* <b>Steps</b>
 *: Locate the physical pins for a UART that is not already used by your board
 *: Configure the PINSEL to use the pins for UART Rx/Tx

@@ Line 96: / Line 96: @@
 *: Connect your UART to your partner's UART (to his board)
 *: Prove that you can send/receive data across multiple boards.
-<b>Extra Credit</b>:
+* <b>Extra Credit</b>:
 *: Use Uart interrupt to queue the received data to avoid polling.  You just need to enable UART RX interrupt and then hookup an interrupt callback to do the receive.
 *: Upload Logic Analyzer Screenshot for the UART Frame.

@@ Line 96: / Line 96: @@
 *: Connect your UART to your partner's UART (to his board)
 *: Prove that you can send/receive data across multiple boards.
-*: <b>Extra Credit</b>: Use Uart interrupt to queue the received data to avoid polling.  You just need to enable UART RX interrupt and then hookup an interrupt callback to do the receive.
+<b>Extra Credit</b>:
 *  Steps

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      LPC_UART0->LCR = (1 << 7);	// Enable DLAB
      LPC_UART0->DLM = 0;
      LPC_UART0->DLL = CPU_CLOCK / (16 * 9600) + 0.5);
      LPC_UART0->LCR = 3;         // 8-bit data
+}

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 A micrcontroller can have multiple UARTs in its hardware, and usually UART0 is interfaced to a "USB to serial" converter chip which is then connected to your computer.  In this exercise, you will write a driver for UART-2 and attempt to communicate between two boards.
-I encourage you to fully read this article first, and here is a video about the UART0 tutorial.  This is a FAST PACED video, so learn to pause the video and look over your LPC user manual frequently :)
+I encourage you to fully read this article first, and here is a video about the UART0 tutorial.  This is a FAST PACED video, so learn to pause the video and look over your LPC user manual frequently :)  '''Note that I forgot to configure the PINSEL registers, which are covered by this tutorial below.'''
 *  [https://www.youtube.com/watch?v=RU_NUPprx2Y UART Driver Video]