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108 lines
2.2 KiB
108 lines
2.2 KiB
6 months ago
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/******************************************************************
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Copyright © Deng Zhimao Co., Ltd. 1990-2030. All rights reserved.
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* @projectName radio
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* @brief radio.cpp
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* @author Deng Zhimao
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* @email 1252699831@qq.com
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* @date 2020-08-19
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*******************************************************************/
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#include "radio.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <QDebug>
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#ifdef __arm__
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#include <sys/ioctl.h>
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#include <linux/i2c-dev.h>
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#endif
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#define I2C_DEV "/dev/i2c-3"
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#define I2C_TEA5767_ID 0x60
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myRadio::myRadio(QObject *parent) : QObject (parent)
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{
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muteFlag = false;
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}
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QString myRadio::readLevel()
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{
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return level;
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}
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unsigned char* myRadio::setRadioFreq(unsigned char radio[5], double frequency)
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{
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unsigned char frequencyH = 0;
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unsigned char frequencyL = 0;
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unsigned int frequencyB;
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frequencyB = 4 * (frequency * 1000000 + 225000) / 32768;
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frequencyH = frequencyB >> 8;
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frequencyL = frequencyB & 0XFF;
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if (muteFlag)
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radio[0] |= 0x80;
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else
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radio[0] = frequencyH;
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radio[1] = frequencyL;
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radio[2] = 0xB0;
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radio[3] = 0x10;
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radio[4] = 0x00;
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return radio;
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}
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void myRadio::setFrequency(const QString str)
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{
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#ifdef __arm__
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double frequency;
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static unsigned char radio[5] = {0};
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char* temChar;
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int fd;
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QByteArray ba = str.toLatin1();
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temChar = ba.data();
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//open i2c device
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if ((fd = open(I2C_DEV, O_RDWR)) < 0) {
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printf("error opening i2c dev %s \r\n", I2C_DEV);
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return;
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}
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//set slave id
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if (ioctl (fd, I2C_SLAVE, I2C_TEA5767_ID) < 0) {
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printf("error set i2c slave id %02x \r\n", I2C_TEA5767_ID);
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return;
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}
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frequency = strtod(temChar, NULL);
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write(fd, setRadioFreq(radio, frequency), 5);
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int rlen = read(fd, radio, 5);
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if (rlen == 5) {
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unsigned int levelTemp = radio[3] >> 4;
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level = QString::number(levelTemp);
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}else {
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level = "";
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}
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emit levelChanged();
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//usleep(50000);
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close(fd);
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#endif
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}
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void myRadio::setMuteFlag(bool flag)
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{
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muteFlag = flag;
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}
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myRadio::~myRadio()
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{
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}
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