本帖最后由 Swallow_0322 于 2011-3-30 16:39 编辑
-
- /*
- 借着HOT大叔助学的东风,献丑第二贴,给你的程序先装个监视器,O(∩_∩)O~
- UART练习。废话不说上源码,希望大家不吝批评赐教!
- 按照第一帖建立工程及配置工程即可!
- 下载可参考菜农助学板活动-第0课板子初次使用!
- 本程序参考新唐库及神的指导教程!
- */
- /**************************************************
- ** 文件名称:NUC120_HOT_UART.c
- ** 文件说明:NUC120助学板练习程序
- ** 创建日期:2011-03-07
- ** 修改日期:
- ** 备 注:Uart0中断接收查询发送练习
- **************************************************/
- #include <stdio.h>
- #include "NUC1xx.h"
- #include "Driver\DrvGPIO.h"
- #include "Driver\DrvSYS.h"
- #include "Driver\DrvUART.h"
- #define RXBUFSIZE 100
- volatile uint16_t comRhead = 0;
- volatile uint16_t comRtail = 0;
- volatile uint8_t g_bWait = FALSE;
- uint8_t comRbuf[100];
- uint32_t comRbytes = 0;
- uint8_t Run_Led = 4; //2----LED1 3----LED2 4----LED3 5----LED4
- /***************
- ** 函数声明 **
- ***************/
- void Init_System (void);
- void Init_Uart (void);
- void UART_INT_HANDLE(uint32_t u32IntStatus);
- /*****************************
- ** Name: UART_INT_HANDLE
- ** Function: UART Callback function
- ** Input: u32IntStatus
- ** OutPut: None
- ** Data: 2011-03-17
- ** Note:
- ****************************/
- void UART_INT_HANDLE(uint32_t u32IntStatus)
- {
- uint8_t bInChar[1]={0xFF};
- if(u32IntStatus & DRVUART_RDAINT)
- {
- /* Get all the input characters */
- while(UART0->ISR.RDA_IF==1)
- {
- /* Get the character from UART Buffer */
- DrvUART_Read(UART_PORT0,bInChar,1);
- /* Check if buffer full */
- if(comRbytes < RXBUFSIZE)
- {
- /* Enqueue the character */
- comRbuf[comRtail] = bInChar[0];
- comRtail = (comRtail == (RXBUFSIZE-1)) ? 0 : (comRtail+1);
- comRbytes++;
- }
- }
- }
- }
- /*****************************
- ** Name: Init_System
- ** Function: 系统初始化函数
- ** Input: None
- ** OutPut: None
- ** Data: 2011-03-17
- ** Note:
- ****************************/
- void Init_System(void)
- {
- /* Unlock the locked registers before access */
- UNLOCKREG(); //寄存器锁定键地址寄存器(RegLockAddr) :有些系统控制寄存器需要被保护起来,以防止误操作而影响芯片运行,
- //这些寄存器在上电复位到用户解锁定之前是锁定的。用户可以连续依次写入“59h”, “16h” “88h”到0x5000_0100解锁定.
- /* Enable the 12MHz oscillator oscillation */
- DrvSYS_SetOscCtrl(E_SYS_XTL12M, 1); //SYSCLK->WRCON.XTL12M_EN = 1;
- /* Waiting for 12M Xtal stable */
- //while (DrvSYS_GetChipClockSourceStatus(E_SYS_XTL12M) != 1); //SYSCLK->CLKSTATUS.XTL12M_STB
- /*eClkSrc - [in] E_SYS_XTL12M / E_SYS_XTL32K / E_SYS_OSC22M / E_SYS_OSC10K / E_SYS_PLL */
- // Note: Only some of NuMicro NUC100 Series support this function.
- DrvSYS_Delay(5000);
- LOCKREG();
- //向“0x5000_0100”写入任何值,就可以重锁保护寄存器
- }
- /*****************************
- ** Name: Init_Uart
- ** Function: UART初始化函数
- ** Input: None
- ** OutPut: None
- ** Data: 2011-03-17
- ** Note:
- ****************************/
- void Init_Uart(void)
- {
- STR_UART_T param;
- /*
- 声明 UART设置的结构体 位于DRVUART.H
- 结构体如下
- typedef struct DRVUART_STRUCT
- {
- uint32_t u32BaudRate;
- E_DATABITS_SETTINS u8cDataBits;
- E_STOPBITS_SETTINS u8cStopBits;
- E_PARITY_SETTINS u8cParity;
- E_FIFO_SETTINGS u8cRxTriggerLevel;
- uint8_t u8TimeOut ;
- }STR_UART_T;
- */
- DrvSYS_SelectIPClockSource(E_SYS_UART_CLKSRC,0); //使能UART时钟
- //SYSCLK->CLKSEL1.UART_S = 0; //UART时钟源选择. 00 =外部12MHz 晶振 01 = PLL 1x =内部 22MHz 振荡器
- DrvGPIO_InitFunction(E_FUNC_UART0); //GPB_MFP0-1-2-3置位 GPIO使能UART功能
- //outpw(&SYS->GPBMFP, inpw(&SYS->GPBMFP) | (0xF<<0));
- param.u32BaudRate = 115200; // 波特率
- param.u8cDataBits = DRVUART_DATABITS_8; // 数据位
- param.u8cStopBits = DRVUART_STOPBITS_1; // 停止位
- param.u8cParity = DRVUART_PARITY_NONE; // 校验位
- param.u8cRxTriggerLevel = DRVUART_FIFO_1BYTES; // FIFO存储深度 1 字节
- param.u8TimeOut = 0; // FIFO超时设定
- /* Set UART Configuration */
- if(DrvUART_Open(UART_PORT0,¶m) != E_SUCCESS) // 串口开启、结构体整体赋值
- printf("UART0 open failed\n");
- /* u32Port -[in] UART Channel: UART_PORT0 / UART_PORT1 /UART_PORT2 */
- /* sParam -[in] the struct parameter to configure UART */
- /* Enable Interrupt and install the call back function */
- DrvUART_EnableInt(UART_PORT0, DRVUART_RDAINT,UART_INT_HANDLE);
- /*u32Port -[in] UART Channel: UART_PORT0 / UART_PORT1 / UART_PORT2 */
- /*u32InterruptFlag -[in] DRVUART_LININT/DRVUART_WAKEUPINT/DRVUART_BUFERRINT/DRVUART_RLSINT */
- /* DRVUART_MOSINT/DRVUART_THREINT/DRVUART_RDAINT/DRVUART_TOUTINT */
- /*pfncallback -[in] A function pointer for callback function */
- }
- int main (void)
- {
- uint8_t test = 250;
- uint8_t bOutChar[1]={0xFF};
- uint16_t tmp;
-
- Init_System();
-
- Init_Uart();
- DrvGPIO_Open(E_GPA,Run_Led, E_IO_OUTPUT); //程序运行指示
- DrvGPIO_ClrBit(E_GPA,Run_Led);
- printf("\n");
- printf("/*==========================\n");
- printf("======菜农 %d 助学计划======\n",test);
- printf("========NUC120助学板========\n");
- printf("======程序参考Cube教程======\n");
- printf("=======2010年03月17日=======\n");
- printf("==========Uart0实验=========\n");
- printf("===请输入任意字符开始测试!==\n");
- printf("==========================*/\n");
- printf("您输入的内容为:");
- while(1)
- {
- tmp = comRtail;
- if(comRhead != tmp)
- {
- bOutChar[0] = comRbuf[comRhead];
- DrvUART_Write(UART_PORT0,bOutChar,1);
- /* u32Port -[in] UART Channel: UART_PORT0 / UART_PORT1 /UART_PORT2 */
- /* pu8RxBuf -[in] Specify the buffer to send the data to transmission FIFO. */
- /* u32ReadBytes -[in] Specify the byte number of data. */
- comRhead = (comRhead == (RXBUFSIZE-1)) ? 0 : (comRhead+1);
- comRbytes--;
- }
- }
- }
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