Dmitry Kovalev / Mbed 2 deprecated LGstaandart

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Dependencies:   mbed

Fork of LG2 by Dmitry Kovalev

host/Source/App/uart.c@23:12e6183f04d4, 2016-02-03 (annotated)

Committer:
Kovalev_D
Date:
Wed Feb 03 10:44:42 2016 +0300
Revision:
23:12e6183f04d4
[thyz

Who changed what in which revision?

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Kovalev_D 23:12e6183f04d4 1 /****************************************************************************
Kovalev_D 23:12e6183f04d4 2 * $Id:: uart.c 5751 2010-11-30 23:56:11Z usb00423 $
Kovalev_D 23:12e6183f04d4 3 * Project: NXP LPC17xx UART example
Kovalev_D 23:12e6183f04d4 4 *
Kovalev_D 23:12e6183f04d4 5 * Description:
Kovalev_D 23:12e6183f04d4 6 * This file contains UART code example which include UART initialization,
Kovalev_D 23:12e6183f04d4 7 * UART interrupt handler, and APIs for UART access.
Kovalev_D 23:12e6183f04d4 8 *
Kovalev_D 23:12e6183f04d4 9 ****************************************************************************/
Kovalev_D 23:12e6183f04d4 10 #include "lpc17xx.h"
Kovalev_D 23:12e6183f04d4 11 #include "uart.h"
Kovalev_D 23:12e6183f04d4 12
Kovalev_D 23:12e6183f04d4 13 #define FOSC 12000000 /* Õñµ´Æ÷ƵÂÊ */
Kovalev_D 23:12e6183f04d4 14
Kovalev_D 23:12e6183f04d4 15 #define FCCLK (FOSC * 8) /* Ö÷ʱÖÓƵÂÊ<=100Mhz */
Kovalev_D 23:12e6183f04d4 16 /* FOSCµÄÕûÊý±¶ */
Kovalev_D 23:12e6183f04d4 17 #define FCCO (FCCLK * 3) /* PLLƵÂÊ(275Mhz~550Mhz) */
Kovalev_D 23:12e6183f04d4 18 /* ÓëFCCLKÏàͬ£¬»òÊÇÆäµÄżÊý±¶ */
Kovalev_D 23:12e6183f04d4 19 #define FPCLK (FCCLK / 4) /* ÍâÉèʱÖÓƵÂÊ,FCCLKµÄ1/2¡¢1/4*/
Kovalev_D 23:12e6183f04d4 20 /* »òÓëFCCLKÏàͬ */
Kovalev_D 23:12e6183f04d4 21 /*****************************************************************************
Kovalev_D 23:12e6183f04d4 22 ** Function name: UARTInit
Kovalev_D 23:12e6183f04d4 23 **
Kovalev_D 23:12e6183f04d4 24 ** Descriptions: Initialize UART port, setup pin select,
Kovalev_D 23:12e6183f04d4 25 ** clock, parity, stop bits, FIFO, etc.
Kovalev_D 23:12e6183f04d4 26 **
Kovalev_D 23:12e6183f04d4 27 ** parameters: portNum(0 or 1) and UART baudrate
Kovalev_D 23:12e6183f04d4 28 ** Returned value: true or false, return false only if the
Kovalev_D 23:12e6183f04d4 29 ** interrupt handler can't be installed to the
Kovalev_D 23:12e6183f04d4 30 ** VIC table
Kovalev_D 23:12e6183f04d4 31 **
Kovalev_D 23:12e6183f04d4 32 *****************************************************************************/
Kovalev_D 23:12e6183f04d4 33 void UART2_Init (void)
Kovalev_D 23:12e6183f04d4 34 {
Kovalev_D 23:12e6183f04d4 35 uint16_t usFdiv;
Kovalev_D 23:12e6183f04d4 36 /* UART2 */
Kovalev_D 23:12e6183f04d4 37 LPC_PINCON->PINSEL0 |= (1 << 20); /* Pin P0.10 used as TXD2 (Com2) */
Kovalev_D 23:12e6183f04d4 38 LPC_PINCON->PINSEL0 |= (1 << 22); /* Pin P0.11 used as RXD2 (Com2) */
Kovalev_D 23:12e6183f04d4 39
Kovalev_D 23:12e6183f04d4 40 LPC_SC->PCONP = LPC_SC->PCONP|(1<<24); /*´ò¿ªUART2µçÔ´¿ØÖÆλ */
Kovalev_D 23:12e6183f04d4 41
Kovalev_D 23:12e6183f04d4 42 LPC_UART2->LCR = 0x83; /* ÔÊÐíÉèÖò¨ÌØÂÊ */
Kovalev_D 23:12e6183f04d4 43 usFdiv = (FPCLK / 16) / 115200; /* ÉèÖò¨ÌØÂÊ */
Kovalev_D 23:12e6183f04d4 44 LPC_UART2->DLM = usFdiv / 256;
Kovalev_D 23:12e6183f04d4 45 LPC_UART2->DLL = usFdiv % 256;
Kovalev_D 23:12e6183f04d4 46 LPC_UART2->LCR = 0x03; /* Ëø¶¨²¨ÌØÂÊ */
Kovalev_D 23:12e6183f04d4 47 LPC_UART2->FCR = 0x06;
Kovalev_D 23:12e6183f04d4 48 }
Kovalev_D 23:12e6183f04d4 49
Kovalev_D 23:12e6183f04d4 50 /*********************************************************************************************************
Kovalev_D 23:12e6183f04d4 51 ** Function name: UART2_SendByte
Kovalev_D 23:12e6183f04d4 52 ** Descriptions: ´Ó´®¿Ú2·¢ËÍÊý¾Ý
Kovalev_D 23:12e6183f04d4 53 ** input parameters: data: ·¢Ë͵ÄÊý¾Ý
Kovalev_D 23:12e6183f04d4 54 ** output parameters: ÎÞ
Kovalev_D 23:12e6183f04d4 55 ** Returned value: ÎÞ
Kovalev_D 23:12e6183f04d4 56 *********************************************************************************************************/
Kovalev_D 23:12e6183f04d4 57 int UART2_SendByte (int ucData)
Kovalev_D 23:12e6183f04d4 58 {
Kovalev_D 23:12e6183f04d4 59 while (!(LPC_UART2->LSR & 0x20));
Kovalev_D 23:12e6183f04d4 60 return (LPC_UART2->THR = ucData);
Kovalev_D 23:12e6183f04d4 61 }
Kovalev_D 23:12e6183f04d4 62
Kovalev_D 23:12e6183f04d4 63 /******************************************************************************
Kovalev_D 23:12e6183f04d4 64 ** End Of File
Kovalev_D 23:12e6183f04d4 65 ******************************************************************************/