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          EEPW首頁 > 嵌入式系統(tǒng) > 設(shè)計應(yīng)用 > 基于LPC1114的學(xué)習(xí)型紅外遙控器

          基于LPC1114的學(xué)習(xí)型紅外遙控器

          作者: 時間:2016-08-10 來源:網(wǎng)絡(luò) 收藏

            #include

          本文引用地址:http://cafeforensic.com/article/201608/295296.htm

            #include

            //---------------------------------------------------------

            void sysint(void);

            //---------------------------------------------------------

            main(void)

            {

            uint32_t i;

            /* Enable AHB clock to the GPIO domain. */

            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6);

            /* Set up NVIC when I/O pins are configured as external interrupts. */

            NVIC_EnableIRQ(EINT0_IRQn);

            NVIC_EnableIRQ(EINT1_IRQn);

            NVIC_EnableIRQ(EINT2_IRQn);

            NVIC_EnableIRQ(EINT3_IRQn);

            LPC_GPIO0->DIR=0xFF;

            while(1)

            {

            LPC_GPIO0->DATA=~LPC_GPIO0->DATA;

            i=300000;

            while(i--);

            }

            }

            //---------------------------------------------------------

            void sysint (void)

            {

            // uint32_t i;

            #ifdef __DEBUG_RAM

            LPC_SYSCON->SYSMEMREMAP = 0x1; /* remap to internal RAM */

            #else

            #ifdef __DEBUG_FLASH

            LPC_SYSCON->SYSMEMREMAP = 0x2; /* remap to internal flash */

            #endif

            #endif

            #if (CLOCK_SETUP) /* Clock Setup */

            /* bit 0 default is crystal bypass,

            bit1 0=0~20Mhz crystal input, 1=15~50Mhz crystal input. */

            LPC_SYSCON->SYSOSCCTRL = 0x00;

            /* main system OSC run is cleared, bit 5 in PDRUNCFG register */

            LPC_SYSCON->PDRUNCFG &= ~(0x1<<5);

            /* Wait 200us for OSC to be stablized, no status

            indication, dummy wait. */

            for ( i = 0; i < 0x100; i++ );

            #if (MAIN_PLL_SETUP)

            Main_PLL_Setup();

            #endif

            #endif /* endif CLOCK_SETUP */

            /* System clock to the IOCON needs to be enabled or

            most of the I/O related peripherals won't work. */

            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<16);

            return;

            }

            心情:利用了2天的業(yè)余時間,終于LED燈閃亮了,感覺的功能真的很強(qiáng)大,比一般的51單片機(jī)復(fù)雜的多。以后要多努力學(xué)習(xí)了。

            不知不覺已經(jīng)11點(diǎn)多了。在喝一瓶,洗洗睡了。

            GPIO"庫"函數(shù)中文說明

            NXP的LPC11XX功能很強(qiáng)大。"庫"函數(shù)也非常多,功能也很強(qiáng)大,充分理解"庫"函數(shù)能幫助我們快速學(xué)習(xí)LPC11XX,下面是英文和中文"庫"函數(shù)的翻譯,希望能幫助大家快速學(xué)習(xí)LPC11XX,以后我會抽出時間,翻譯其他功能的"庫"函數(shù)。

            /*****************************************************************************

            * gpio.c: GPIO C file for NXP LPC11xx Family Microprocessors

            *

            * Copyright(C) 2008, NXP Semiconductor

            * All rights reserved.

            *

            * History

            * 2008.07.20 ver 1.00 Prelimnary version, first Release

            *

            *****************************************************************************/

            #include "LPC11xx.h" /* LPC11xx Peripheral Registers */

            #include "gpio.h"

            /* Shadow registers used to prevent chance of read-modify-write errors */

            /* Ultra-conservative approach... */

            volatile uint32_t GPIOShadowPort0;

            volatile uint32_t GPIOShadowPort1;

            volatile uint32_t GPIOShadowPort2;

            volatile uint32_t GPIOShadowPort3;

            volatile uint32_t gpio0_counter = 0;

            volatile uint32_t gpio1_counter = 0;

            volatile uint32_t gpio2_counter = 0;

            volatile uint32_t gpio3_counter = 0;

            volatile uint32_t p0_1_counter = 0;

            volatile uint32_t p1_1_counter = 0;

            volatile uint32_t p2_1_counter = 0;

            volatile uint32_t p3_1_counter = 0;

            /*****************************************************************************

            ** Function name: PIOINT0_IRQHandler

            **

            ** Descriptions: Use one GPIO pin(port0 pin1) as interrupt source

            **

            ** parameters: None

            ** Returned value: None

            **

            *****************************************************************************/

            void PIOINT0_IRQHandler(void)

            {

            uint32_t regVal;

            gpio0_counter++;

            regVal = GPIOIntStatus( PORT0, 1 );

            if ( regVal )

            {

            p0_1_counter++;

            GPIOIntClear( PORT0, 1 );

            }

            return;

            }

            /*****************************************************************************

            ** Function name: PIOINT1_IRQHandler

            **

            ** Descriptions: Use one GPIO pin(port1 pin1) as interrupt source

            **

            ** parameters: None

            ** Returned value: None

            **

            *****************************************************************************/

            void PIOINT1_IRQHandler(void)

            {

            uint32_t regVal;

            gpio1_counter++;

            regVal = GPIOIntStatus( PORT1, 1 );

            if ( regVal )

            {

            p1_1_counter++;

            GPIOIntClear( PORT1, 1 );

            }

            return;

            }

            /*****************************************************************************

            ** Function name: PIOINT2_IRQHandler

            **

            ** Descriptions: Use one GPIO pin(port2 pin1) as interrupt source

            **

            ** parameters: None

            ** Returned value: None

            **

            *****************************************************************************/

            void PIOINT2_IRQHandler(void)

            {

            uint32_t regVal;

            gpio2_counter++;

            regVal = GPIOIntStatus( PORT2, 1 );

            if ( regVal )

            {

            p2_1_counter++;

            GPIOIntClear( PORT2, 1 );

            }

            return;

            }

            /*****************************************************************************

            ** Function name: PIOINT3_IRQHandler

            **

            ** Descriptions: Use one GPIO pin(port3 pin1) as interrupt source

            **

            ** parameters: None

            ** Returned value: None

            **

            *****************************************************************************/

            void PIOINT3_IRQHandler(void)

            {

            uint32_t regVal;

            gpio3_counter++;

            regVal = GPIOIntStatus( PORT3, 1 );

            if ( regVal )

            {

            p3_1_counter++;

            GPIOIntClear( PORT3, 1 );

            }

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOInit

            **

            ** Descriptions: Initialize GPIO, install the

            ** GPIO interrupt handler

            **

            ** parameters: None

            ** Returned value: true or false, return false if the VIC table

            ** is full and GPIO interrupt handler can be

            ** installed.

            **

            *****************************************************************************/

            void GPIOInit( void )

            {

            /* Enable AHB clock to the GPIO domain. */

            LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6);

            #ifdef __JTAG_DISABLED

            LPC_IOCON->JTAG_TDO_PIO1_1 &= ~0x07;

            LPC_IOCON->JTAG_TDO_PIO1_1 |= 0x01;

            #endif

            /* Set up NVIC when I/O pins are configured as external interrupts. */

            NVIC_EnableIRQ(EINT0_IRQn);

            NVIC_EnableIRQ(EINT1_IRQn);

            NVIC_EnableIRQ(EINT2_IRQn);

            NVIC_EnableIRQ(EINT3_IRQn);

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOSetDir

            **

            ** Descriptions: Set the direction in GPIO port

            **

            ** parameters: port num, bit position, direction (1 out, 0 input)

            ** Returned value: None

            **

            *****************************************************************************/

            void GPIOSetDir( uint32_t portNum, uint32_t bitPosi, uint32_t dir )

            {

            /* if DIR is OUT(1), but GPIOx_DIR is not set, set DIR

            to OUT(1); if DIR is IN(0), but GPIOx_DIR is set, clr

            DIR to IN(0). All the other cases are ignored.

            On port3(bit 0 through 3 only), no error protection if

            bit value is out of range. */

            switch ( portNum )

            {

            case PORT0:

            if ( !(LPC_GPIO0->DIR & (0x1< LPC_GPIO0->DIR |= (0x1< else if ( (LPC_GPIO0->DIR & (0x1< LPC_GPIO0->DIR &= ~(0x1< break;

            case PORT1:

            if ( !(LPC_GPIO1->DIR & (0x1< LPC_GPIO1->DIR |= (0x1< else if ( (LPC_GPIO1->DIR & (0x1< LPC_GPIO1->DIR &= ~(0x1< break;

            case PORT2:

            if ( !(LPC_GPIO2->DIR & (0x1< LPC_GPIO2->DIR |= (0x1< else if ( (LPC_GPIO2->DIR & (0x1< LPC_GPIO2->DIR &= ~(0x1< break;

            case PORT3:

            if ( !(LPC_GPIO3->DIR & (0x1< LPC_GPIO3->DIR |= (0x1< else if ( (LPC_GPIO3->DIR & (0x1< LPC_GPIO3->DIR &= ~(0x1< break;

            default:

            break;

            }

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOSetValue

            **

            ** Descriptions: Set/clear a bitvalue in a specific bit position

            ** in GPIO portX(X is the port number.)

            **

            ** parameters: port num, bit position, bit value

            ** Returned value: None

            **

            *****************************************************************************/

            void GPIOSetValue( uint32_t portNum, uint32_t bitPosi, uint32_t bitVal )

            {

            /* if bitVal is 1, the bitPosi bit is set in the GPIOShadowPortx. Then

            * GPIOShadowPortx is written to the I/O port register. */

            switch ( portNum )

            {

            case PORT0:

            if(bitVal)

            GPIOShadowPort0 |= (1< else

            GPIOShadowPort0 &= ~(1<

            /* Use of shadow prevents bit operation error if the read value

            * (external hardware state) of a pin differs from the I/O latch

            * value. A potential side effect is that other GPIO code in this

            * project that is not aware of the shadow will have its GPIO

            * state overwritten.

            */

            LPC_GPIO0->DATA = GPIOShadowPort0;

            break;

            case PORT1:

            if(bitVal)

            GPIOShadowPort1 |= (1< else

            GPIOShadowPort1 &= ~(1<

            LPC_GPIO1->DATA = GPIOShadowPort1;

            break;

            case PORT2:

            if(bitVal)

            GPIOShadowPort2 |= (1< else

            GPIOShadowPort2 &= ~(1<

            LPC_GPIO2->DATA = GPIOShadowPort2;

            break;

            case PORT3:

            if(bitVal)

            GPIOShadowPort3 |= (1< else

            GPIOShadowPort3 &= ~(1<

            LPC_GPIO3->DATA = GPIOShadowPort3;

            break;

            default:

            break;

            }

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOSetInterrupt

            **

            ** Descriptions: Set interrupt sense, event, etc.

            ** edge or level, 0 is edge, 1 is level

            ** single or double edge, 0 is single, 1 is double

            ** active high or low, etc.

            **

            ** parameters: port num, bit position, sense, single/doube, polarity

            ** Returned value: None

            **

            *****************************************************************************/

            void GPIOSetInterrupt( uint32_t portNum, uint32_t bitPosi, uint32_t sense,

            uint32_t single, uint32_t event )

            {

            switch ( portNum )

            {

            case PORT0:

            if ( sense == 0 )

            {

            LPC_GPIO0->IS &= ~(0x1< /* single or double only applies when sense is 0(edge trigger). */

            if ( single == 0 )

            LPC_GPIO0->IBE &= ~(0x1< else

            LPC_GPIO0->IBE |= (0x1< }

            else

            LPC_GPIO0->IS |= (0x1< if ( event == 0 )

            LPC_GPIO0->IEV &= ~(0x1< else

            LPC_GPIO0->IEV |= (0x1< break;

            case PORT1:

            if ( sense == 0 )

            {

            LPC_GPIO1->IS &= ~(0x1< /* single or double only applies when sense is 0(edge trigger). */

            if ( single == 0 )

            LPC_GPIO1->IBE &= ~(0x1< else

            LPC_GPIO1->IBE |= (0x1< }

            else

            LPC_GPIO1->IS |= (0x1< if ( event == 0 )

            LPC_GPIO1->IEV &= ~(0x1< else

            LPC_GPIO1->IEV |= (0x1< break;

            case PORT2:

            if ( sense == 0 )

            {

            LPC_GPIO2->IS &= ~(0x1< /* single or double only applies when sense is 0(edge trigger). */

            if ( single == 0 )

            LPC_GPIO2->IBE &= ~(0x1< else

            LPC_GPIO2->IBE |= (0x1< }

            else

            LPC_GPIO2->IS |= (0x1< if ( event == 0 )

            LPC_GPIO2->IEV &= ~(0x1< else

            LPC_GPIO2->IEV |= (0x1< break;

            case PORT3:

            if ( sense == 0 )

            {

            LPC_GPIO3->IS &= ~(0x1< /* single or double only applies when sense is 0(edge trigger). */

            if ( single == 0 )

            LPC_GPIO3->IBE &= ~(0x1< else

            LPC_GPIO3->IBE |= (0x1< }

            else

            LPC_GPIO3->IS |= (0x1< if ( event == 0 )

            LPC_GPIO3->IEV &= ~(0x1< else

            LPC_GPIO3->IEV |= (0x1< break;

            default:

            break;

            }

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOIntEnable

            **

            ** Descriptions: Enable Interrupt Mask for a port pin.

            **

            ** parameters: port num, bit position

            ** Returned value: None

            **

            *****************************************************************************/

            void GPIOIntEnable( uint32_t portNum, uint32_t bitPosi )

            {

            switch ( portNum )

            {

            case PORT0:

            LPC_GPIO0->IE |= (0x1< break;

            case PORT1:

            LPC_GPIO1->IE |= (0x1< break;

            case PORT2:

            LPC_GPIO2->IE |= (0x1< break;

            case PORT3:

            LPC_GPIO3->IE |= (0x1< break;

            default:

            break;

            }

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOIntDisable

            **

            ** Descriptions: Disable Interrupt Mask for a port pin.

            **

            ** parameters: port num, bit position

            ** Returned value: None

            **

            *****************************************************************************/

            void GPIOIntDisable( uint32_t portNum, uint32_t bitPosi )

            {

            switch ( portNum )

            {

            case PORT0:

            LPC_GPIO0->IE &= ~(0x1< break;

            case PORT1:

            LPC_GPIO1->IE &= ~(0x1< break;

            case PORT2:

            LPC_GPIO2->IE &= ~(0x1< break;

            case PORT3:

            LPC_GPIO3->IE &= ~(0x1< break;

            default:

            break;

            }

            return;

            }

            /*****************************************************************************

            ** Function name: GPIOIntStatus

            **

            ** Descriptions: Get Interrupt status for a port pin.

            **

            ** parameters: port num, bit position

            ** Returned value: None

            **

            *****************************************************************************/

            uint32_t GPIOIntStatus( uint32_t portNum, uint32_t bitPosi )

            {

            uint32_t regVal = 0;

            switch ( portNum )

            {

            case PORT0:

            if ( LPC_GPIO0->MIS & (0x1< regVal = 1;

            break;

            case PORT1:

            if ( LPC_GPIO1->MIS & (0x1< regVal = 1;

            break;

            case PORT2:

            if ( LPC_GPIO2->MIS & (0x1< regVal = 1;

            break;

            case PORT3:

            if ( LPC_GPIO3->MIS & (0x1< regVal = 1;

            break;

            default:

            break;

            }

            return ( regVal );

            }

            /*****************************************************************************

            ** Function name: GPIOIntClear

            **

            ** Descriptions: Clear Interrupt for a port pin.

            **

            ** parameters: port num, bit position

            ** Returned value: None

            **

            *****************************************************************************/

            void GPIOIntClear( uint32_t portNum, uint32_t bitPosi )

            {

            switch ( portNum )

            {

            case PORT0:

            LPC_GPIO0->IC |= (0x1< break;

            case PORT1:

            LPC_GPIO1->IC |= (0x1< break;

            case PORT2:

            LPC_GPIO2->IC |= (0x1< break;

            case PORT3:

            LPC_GPIO3->IC |= (0x1< break;

            default:

            break;

            }

            return;

            }

            /******************************************************************************

            ** End Of File

            ******************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOSetDir

            ** 功能: 設(shè)置GPIO口方向

            ** 參數(shù): 端口號(PORT0-PORT3), 第幾位(0-31), 方向 (1 輸出, 0 輸入)

            ** 返回值: 無

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOSetValue

            ** 功能: 設(shè)置端口的值

            ** 參數(shù): 端口號(PORT0-PORT3), 第幾位(0-31), 方向 (1 輸出, 0 輸入)

            ** 返回值: 無

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOSetInterrupt

            ** 功能: 設(shè)置中斷

            ** 參數(shù): 端口號(PORT0-PORT3),

            第幾位(0-31),

            觸發(fā)方式(邊緣觸發(fā)還是電平觸發(fā) 0邊緣,1電平),

            單/雙電平觸發(fā),(0單電平,1,雙電平),

            根據(jù)觸發(fā)方式選類型(0上升沿或高電平,1下降沿或低電平)

            ** 返回值: 無

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOIntEnable

            ** 功能: 允許I/O引腳中斷

            ** 參數(shù): 端口號(PORT0-PORT3), 第幾位(0-31),

            ** 返回值: 無

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOIntDisable

            ** 功能: 禁止I/O引腳中斷

            ** 參數(shù): 端口號(PORT0-PORT3), 第幾位(0-31),

            ** 返回值: 無

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOIntStatus

            ** 功能: 獲得引腳中斷狀態(tài)

            ** 參數(shù): 端口號(PORT0-PORT3), 第幾位(0-31),

            ** 返回值: 0 無中斷或中斷屏蔽,1 有中斷

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOIntClear

            ** 功能: 清除邊沿檢測邏輯

            ** 參數(shù): 端口號(PORT0-PORT3), 第幾位(0-31),

            ** 返回值: 無

            *****************************************************************************/

            /*****************************************************************************

            ** 函數(shù)名: GPIOInit

            ** 功能: GPIO初始化

            ** 參數(shù): 無

            ** 返回值: 真或假,(一般不用)。

            *****************************************************************************/


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