initial cleanup and mapping
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288
examples/BProTest/lnIOBoard.c
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288
examples/BProTest/lnIOBoard.c
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/************************************************************
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Copyright (C), 2014, lemaker.org.
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FileName: lnIOBoard.c
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Author: peter
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Version : 1.0
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Date: 2014.10.10
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Description: be used to test LN IOBoard
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Function List:
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History:
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<author> <time> <version > <desc>
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peter 2014.10.10 1.0 create
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Compile: gcc lnIOBoard.c -o lnIOBoard -lwiringPiDev -lwiringPi
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***********************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <wiringPi.h>
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#include <lcd.h>
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#include <wiringSerial.h>
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#define FAIL -1
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#define I2C_BASE 100
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#define PCF8591_CHANNEL 4
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#define LED_MAX_NUM 8
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void uSage(void)
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{
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printf("Usage: lnIOBoard [i2c | lcd | led | spi | uart]\n");
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}
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void at45BufWrite(unsigned char val)
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{
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int ret;
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unsigned char wBuf[5] = {0x84, 0xff, 0x00, 0x02,0xff}; //write data to buffer 1
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wBuf[4] = val;
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printf("SPI: write data: 0x%02x\n", wBuf[4]);
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ret = wiringPiSPIDataRW(0, wBuf, sizeof(wBuf));
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if(ret < 0)
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{
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printf("Write data to the AT45DB041D failed!\n");
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return;
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}
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}
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unsigned char at45BufRead(void)
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{
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int ret;
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unsigned char rBuf[6] = {0xD4, 0xff, 0x00, 0x02, 0xff, 0xff}; //read data from buffer 1
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ret = wiringPiSPIDataRW(0, rBuf, sizeof(rBuf));
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if(ret < 0)
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{
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printf("Read data from the AT45DB041D failed!\n");
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return;
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}
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return rBuf[5];
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}
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int uartTxtoRxTest(int txfd, int rxfd, unsigned char tCh)
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{
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int flg;
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serialPutchar(txfd, tCh);
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delay(100); //delay 100ms
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if(tCh == serialGetchar(rxfd))
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{
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flg = 1;
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}
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else
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{
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flg = 0;
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}
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return flg;
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}
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/*
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* Function: ioBoardI2cTest
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* Description: be used to test I2C interface on the board
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*/
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void ioBoardI2cTest(int addr, int outv, int chmax)
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{
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int val;
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int ch;
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pcf8591Setup(I2C_BASE, addr); //address >>1
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analogWrite(I2C_BASE, outv); //set the analog output(3.3v*128/256)
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printf("I2C: please measure the output voltage!and Expectation value: 1.65v\n");
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for(ch=0; ch<chmax; ch++)
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{
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val = analogRead(I2C_BASE + ch);
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printf("I2C: the channel %d input voltage: %d and expectation value range from 0 to 256\n", ch, val);
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}
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}
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/*
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* Function: ioBoardLcdTest
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* Description: be used to test Lcd interface on the board
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*/
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void ioBoardLcdTest(int bits, int rows, int cols)
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{
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int lcdHandle;
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lcdHandle = lcdInit (rows, cols, 8, 21, 23, 0,1,2,3,4,5,6,7) ;
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if(lcdHandle < 0)
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{
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printf("Lcd init failed!\n");
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return;
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}
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printf("LCD: the LCD will display character, please view!\n");
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lcdPosition (lcdHandle, 0, 0) ; lcdPuts (lcdHandle, "Lcd Test OK") ;
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lcdPosition (lcdHandle, 0, 1) ; lcdPuts (lcdHandle, "www.lemaker.org") ;
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}
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/*
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* Function: ioBoardLedTest
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* Description: be used to test led on the board
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*/
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void ioBoardLedTest(int cycles, int dly)
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{
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int pinLed;
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int cnt = 0;
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for(pinLed=0; pinLed<LED_MAX_NUM; pinLed++)
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{
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pinMode(pinLed, OUTPUT);
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}
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pinLed = 0;
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printf("LED: the leds will blink, please view!\n");
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while(cnt < cycles) //blink three times
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{
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digitalWrite(pinLed, HIGH);
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delay(dly);
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digitalWrite(pinLed, LOW);
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delay(dly);
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pinLed ++;
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if(pinLed > LED_MAX_NUM-1)
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{
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pinLed = 0;
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cnt++;
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}
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}
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}
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/*
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* Function: ioBoardSpiTest
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* Description: be used to test SPI interface on the board
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*
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* host slave
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* MISO < - > MISO
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* MOSI < - > MOSI
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* CLK < - > CLK
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* CE0/1 < - > CS
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*/
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void ioBoardSpiTest()
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{
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int fd;
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unsigned char wData = 0x34; //write value
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unsigned char retv;
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system("gpio load spi"); //load spi driver
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fd = wiringPiSPISetup(0, 5000000); //channel:0 5M
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if(fd < 0)
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{
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printf("Open the SPI device failed!\n");
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return;
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}
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at45BufWrite(wData);
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delay(100); //delay 100ms
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retv = at45BufRead();
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printf("SPI: read data: 0x%02x\n", retv);
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if(wData == retv)
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{
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printf("SPI: the spi interface is OK!\n");
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}
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else
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{
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printf("SPI: the spi interface is not OK! Please check out!\n");
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}
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close(fd);
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}
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/*
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* Function: ioBoardUartTest
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* Description: be used to test UART3 and UART7 interface on the board
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*
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* H2 H3
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* TX3 < - > RX7
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* RX3 < - > TX7
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*/
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int ioBoardUartTest()
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{
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int uart3fd;
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int uart7fd;
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int uart3flg;
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int uart7flg;
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char tCh = 'x';
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char gCh;
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uart3fd = serialOpen ("/dev/ttyS2", 115200);
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if(uart3fd < 0)
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{
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fprintf (stderr, "Unable to open UART3 device: %s\n", strerror (errno)) ;
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return FAIL ;
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}
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uart7fd = serialOpen ("/dev/ttyS3", 115200);
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if(uart7fd < 0)
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{
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fprintf (stderr, "Unable to open UART7 device: %s\n", strerror (errno)) ;
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return FAIL ;
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}
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if((1== uartTxtoRxTest(uart3fd, uart7fd, 't')) && (1== uartTxtoRxTest(uart7fd, uart3fd, 'r')))
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{
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printf("UART:the uart3 and uart7 interface is OK!\n");
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}
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else
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{
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printf("UART:the uart3 and uart7 interface is not OK! Please check out!\n");
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}
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serialClose(uart3fd);
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serialClose(uart7fd);
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return 0;
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}
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void ioBoardTest(void)
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{
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printf("------------------LN IOBoard self-check start-------------------\n");
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ioBoardLcdTest(8, 2, 16);
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ioBoardLedTest(3, 500);
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ioBoardI2cTest(0x48, 0x80, PCF8591_CHANNEL);
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ioBoardSpiTest();
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ioBoardUartTest();
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printf("------------------LN IOBoard self-check over-------------------\n");
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}
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int main(int argc, char **argv)
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{
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wiringPiSetup();
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if(argc != 2)
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{
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ioBoardTest();
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return 0;
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}
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if (0 == strcasecmp(argv[1], "i2c"))
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{
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ioBoardI2cTest(0x48, 0x80, PCF8591_CHANNEL);
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}
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else if (0 == strcasecmp(argv[1], "lcd"))
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{
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ioBoardLcdTest(8, 2, 16);
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}
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else if (0 == strcasecmp(argv[1], "led"))
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{
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ioBoardLedTest(3, 500);
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}
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else if (0 == strcasecmp(argv[1], "spi"))
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{
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ioBoardSpiTest();
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}
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else if(0 == strcasecmp(argv[1], "uart"))
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{
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ioBoardUartTest();
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}
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else
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{
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uSage();
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return FAIL;
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}
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return 0;
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}
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