175 lines
4.6 KiB
C
175 lines
4.6 KiB
C
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#include "app_config.h"
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#include "system/includes.h"
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#include "fm_emitter/fm_emitter_manage.h"
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#include "qn8027.h"
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#if(TCFG_FM_EMITTER_QN8027_ENABLE == ENABLE)
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/*----------------------------------------------------------------------------*/
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/**@brief QN8027 写寄存器函数
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@param addr：寄存器地址 data：写入数据
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@return 无
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@note void qn8027_write(u8 iic_addr,u8 iic_data)
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*/
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/*----------------------------------------------------------------------------*/
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void qn8027_write(u8 reg_addr, u8 reg_data)
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{
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iic_write(QN8027_ADDR_WRITE, reg_addr, ®_data, 1);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief QN8027 读寄存器函数
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@param addr：要读寄存器地址
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@return 读取到的寄存器的值
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@note u8 qn8027_read(u8 iic_addr)
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*/
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/*----------------------------------------------------------------------------*/
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u8 qn8027_read(u8 reg_addr)
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{
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u8 Byte_RecivData;
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iic_start(); //I2C启动
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iic_sendbyte(QN8027_ADDR_WRITE); //写命令
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iic_sendbyte(reg_addr); //写地址
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iic_start(); //写转为读命令，需要再次启动I2C
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iic_sendbyte(QN8027_ADDR_READ); //读命令
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Byte_RecivData = iic_revbyte(1);
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iic_stop(); //I2C停止
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return Byte_RecivData;
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}
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void qn8027_write_Bit(u8 reg, u8 start, u8 len, u8 data)
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{
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u8 temp;
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temp = qn8027_read(reg);
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SFR(temp, start, len, data);
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qn8027_write(reg, temp);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief QN8027 初始化函数
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@param fre：初始化时设置的频点
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@return 无
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@note void qn8027_init(u16 fre)
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*/
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/*----------------------------------------------------------------------------*/
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void qn8027_init(u16 fre)
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{
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u8 read_data;
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puts("qn8027_init\n");
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printf("qn8027_id:%x:%x\n", qn8027_read(QN8027_CID1), qn8027_read(QN8027_CID2));
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qn8027_write(QN8027_SYSTEM, 0x81); //reset all reg
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delay_n10ms(2);
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#if (FMTX_CHIP_CLK_SOURCE == CLK_BY_EXTERN_OSC)
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qn8027_write(QN8027_REG_XTL, 0x3f); //外挂晶振
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#else
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qn8027_write(QN8027_REG_XTL, 0xff); //外部时钟输入
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#endif
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#if (FMTX_CHIP_OSC_SELECT == OSC_24M)
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qn8027_write(QN8027_REG_VGA, 0x91); //24M
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#else
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qn8027_write(QN8027_REG_VGA, 0x21); //12M
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#endif
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qn8027_write(QN8027_SYSTEM, 0x41); //reset FSM
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qn8027_write(QN8027_SYSTEM, 0x01);
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delay_n10ms(2);
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qn8027_write(0x18, 0xe4); //SNR improve xx1x x1xx
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qn8027_write(0x1b, 0xf0); //最大发射功率
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qn8027_write(QN8027_CH1, 0x7e); //设置发射频率
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#if PA_OFF_WHEN_NO_AUDIO
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qn8027_write(QN8027_GPLT, 0xA9); //当没有音频信号输入时,一分钟后关闭发射
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#else
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qn8027_write(QN8027_GPLT, 0xB9); //放弃QN8027 PA关闭功能当没有音频信号输入时
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#endif
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qn8027_write(QN8027_FDEV, 64);
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qn8027_write(QN8027_SYSTEM, 0x22); //发射
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delay_n10ms(10);
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qn8027_set_freq(fre);
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}
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/*
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void qn8027_set_freq(u16 fre)
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fre 是频率值
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例子：90MHZ应该传入900
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*/
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/*----------------------------------------------------------------------------*/
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/**@brief QN8027 频点设置函数
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@param fre：设置频点
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@return 无
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@note void qn8027_set_freq(u16 fre)
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*/
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/*----------------------------------------------------------------------------*/
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void qn8027_set_freq(u16 fre)
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{
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u8 ch_temp0;
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u16 ch_temp1;
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ch_temp1 = (fre - 760) * 2;
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ch_temp0 = (ch_temp1 >> 8) & 0x3;
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ch_temp0 = (0x20 | ch_temp0);
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qn8027_write(QN8027_CH1, ch_temp1 & 0xff);
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qn8027_write(QN8027_SYSTEM, ch_temp0);
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}
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void qn8027_set_power(u8 power, u16 freq)
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{
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if (power > QN8027_TX_POWER_MAX || power < QN8027_TX_POWER_MIN) {
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power = QN8027_TX_POWER_MAX;
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}
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qn8027_write(QN8027_PAC, power | BIT(7));
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delay_n10ms(1);
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qn8027_write(QN8027_SYSTEM, 0x01); //enter IDLE mode
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delay_n10ms(1);
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qn8027_write(QN8027_SYSTEM, 0x22); //enter TX mode
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delay_n10ms(1);
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qn8027_set_freq(freq);
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}
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void qn8027_transmit_start(void)
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{
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qn8027_write_Bit(QN8027_SYSTEM, 5, 1, 1);
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}
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void qn8027_transmit_stop(void)
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{
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qn8027_write_Bit(QN8027_SYSTEM, 5, 1, 0);
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}
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void qn8027_mute(u8 mute)
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{
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if (mute) {
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qn8027_write_Bit(QN8027_SYSTEM, 3, 1, 1);
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} else {
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qn8027_write_Bit(QN8027_SYSTEM, 3, 1, 0);
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}
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}
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REGISTER_FM_EMITTER(qn8027) = {
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.name = "qn8027",
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.init = qn8027_init,
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.start = qn8027_transmit_start,
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.stop = qn8027_transmit_stop,
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.set_fre = qn8027_set_freq,
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.set_power = qn8027_set_power,
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};
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#endif //QN8027
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