Dmitry Kovalev
/
LGfiltr
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Fork of
LGstaandart
by 
Dmitry Kovalev
Diff: host/Source/App/uart.c
- Revision:
- 23:12e6183f04d4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/host/Source/App/uart.c Wed Feb 03 10:44:42 2016 +0300
@@ -0,0 +1,65 @@
+/****************************************************************************
+ * $Id:: uart.c 5751 2010-11-30 23:56:11Z usb00423 $
+ * Project: NXP LPC17xx UART example
+ *
+ * Description:
+ * This file contains UART code example which include UART initialization,
+ * UART interrupt handler, and APIs for UART access.
+ *
+****************************************************************************/
+#include "lpc17xx.h"
+#include "uart.h"
+
+#define FOSC 12000000 /* Õñµ´Æ÷ƵÂÊ */
+
+#define FCCLK (FOSC * 8) /* Ö÷ʱÖÓƵÂÊ<=100Mhz */
+ /* FOSCµÄÕûÊý±¶ */
+#define FCCO (FCCLK * 3) /* PLLƵÂÊ(275Mhz~550Mhz) */
+ /* ÓëFCCLKÏàͬ£¬»òÊÇÆäµÄżÊý±¶ */
+#define FPCLK (FCCLK / 4) /* ÍâÉèʱÖÓƵÂÊ,FCCLKµÄ1/2¡¢1/4*/
+ /* »òÓëFCCLKÏàͬ */
+/*****************************************************************************
+** Function name: UARTInit
+**
+** Descriptions: Initialize UART port, setup pin select,
+** clock, parity, stop bits, FIFO, etc.
+**
+** parameters: portNum(0 or 1) and UART baudrate
+** Returned value: true or false, return false only if the
+** interrupt handler can't be installed to the
+** VIC table
+**
+*****************************************************************************/
+void UART2_Init (void)
+{
+ uint16_t usFdiv;
+ /* UART2 */
+ LPC_PINCON->PINSEL0 |= (1 << 20); /* Pin P0.10 used as TXD2 (Com2) */
+ LPC_PINCON->PINSEL0 |= (1 << 22); /* Pin P0.11 used as RXD2 (Com2) */
+
+ LPC_SC->PCONP = LPC_SC->PCONP|(1<<24); /*´ò¿ªUART2µçÔ´¿ØÖÆλ */
+
+ LPC_UART2->LCR = 0x83; /* ÔÊÐíÉèÖò¨ÌØÂÊ */
+ usFdiv = (FPCLK / 16) / 115200; /* ÉèÖò¨ÌØÂÊ */
+ LPC_UART2->DLM = usFdiv / 256;
+ LPC_UART2->DLL = usFdiv % 256;
+ LPC_UART2->LCR = 0x03; /* Ëø¶¨²¨ÌØÂÊ */
+ LPC_UART2->FCR = 0x06;
+}
+
+/*********************************************************************************************************
+** Function name: UART2_SendByte
+** Descriptions: ´Ó´®¿Ú2·¢ËÍÊý¾Ý
+** input parameters: data: ·¢Ë͵ÄÊý¾Ý
+** output parameters: ÎÞ
+** Returned value: ÎÞ
+*********************************************************************************************************/
+int UART2_SendByte (int ucData)
+{
+ while (!(LPC_UART2->LSR & 0x20));
+ return (LPC_UART2->THR = ucData);
+}
+
+/******************************************************************************
+** End Of File
+******************************************************************************/