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
+******************************************************************************/