342 lines
9.1 KiB
C
342 lines
9.1 KiB
C
/*--------------------------------------------------------------------------*/
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/**@file bk1080.c
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@brief BK1080收音底层驱动
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@details
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@author
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@date 2011-3-30
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@note
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*/
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/*----------------------------------------------------------------------------*/
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#include "app_config.h"
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#include "../fm_manage.h"
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#include "BK1080.h"
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#if TCFG_FM_BK1080_ENABLE && CONFIG_FM_DEV_ENABLE
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#define delay_n10ms(x) os_time_dly(x)
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/*------------BK1080 Initialization Table-----------------*/
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/*
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const u16 HW_Reg[]=
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{
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0x0008,
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0x1080,
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#if XTAL_CLOCK //reg2
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0x1201, //for internal crystal clock
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#else
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0x0201, //for extern clock
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#endif
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0x0000,
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0x40C0,
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0x0A1F, //reg5 RSSI[15:8] BAND[7:6] SPACE[5:4],Europe standar
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0x002E,
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0x02FF,
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0x5B11,
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0x0000,
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0x411E,
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0x0000,
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0xCE00,
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0x0000,
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0x0000,
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0x1000, //reg15
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0x0010,
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0x0000,
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0x13FF,
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0x9852,
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0x0000,
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0x0000,
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0x0008,
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0x0000,
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0x51E1,
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0x28DC,
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0x2645,
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0x00E4,
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0x1CD8,
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0x3A50,
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0xEAF0,
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0x3000, //reg31
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0x0200,
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0x0000,
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};
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*/
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static const u16 HW_Reg[] = {
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0x0800,
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0x8010,
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#if XTAL_CLOCK //reg2
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0x0112, //for internal crystal clock
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#else
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0x0142, //for extern clock, system mute
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#endif
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0x0000,
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0xC040,
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0x1F0A, //reg5 RSSI[15:8] BAND[7:6] SPACE[5:4],Europe standar
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0x2E00,
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0xFF02,
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0x115B,
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0x0000,
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0x1E41,
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0x0000,
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0x00CE,
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0x0000,
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0x0000,
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0x0010, //reg15
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0x1000,
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0x0000,
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0xFF13,
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0x5298,
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0x0000,
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0x0000,
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0x0800,
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0x0000,
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0xE151,
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0xDC38,
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0x4526,
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0xE400,
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0xD81C,
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0x503A,
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0xF0EA,
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0x0030, //reg31
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0x0002,
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0x0000,
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};
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/*----------------------------------------------------------------------------*/
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/**@brief BK1080读寄存器函数
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@param num 需要的数目
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@return 无
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@note void BEKEN_I2c_Read(u8 reg,u8 *pBuf,u8 num)
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*/
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/*----------------------------------------------------------------------------*/
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static void BEKEN_I2c_Read(u8 reg, u8 *pBuf, u8 num)
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{
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reg = reg << 1;
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reg |= 0x01;
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fm_IIC_readn(CHIP_DEV_ID, reg, pBuf, num);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief BK1080读寄存器函数
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@param num 需要的数目
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@return 无
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@note void BEKEN_I2c_Write(u8 reg,u8 *pBuf,u8 num)
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*/
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/*----------------------------------------------------------------------------*/
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static void BEKEN_I2c_Write(u8 reg, u8 *pBuf, u8 num)
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{
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reg = reg << 1;
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fm_IIC_write(CHIP_DEV_ID, reg, pBuf, num);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief BK1080 初始化
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@param 无
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@return 无
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@note void init_BK1080(void)
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*/
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/*----------------------------------------------------------------------------*/
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static int bk1080_init(void *priv)
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{
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u8 temp[2];
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//delay_n10ms(100); //delay 1s,please revise delay time according to your MCU
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BEKEN_I2c_Write(0, (u8 *)HW_Reg, 68); //start from reg2,total 60 byte
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delay_n10ms(25); //delay 250ms
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temp[0] = HW_Reg[25];
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temp[1] = HW_Reg[25] >> 8;
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temp[1] &= 0x7f;
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BEKEN_I2c_Write(25, temp, 2);
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temp[1] |= 0x80;
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BEKEN_I2c_Write(25, temp, 2);
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/* dac_channel_on(FM_IIC_CHANNEL, FADE_ON); */
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delay_n10ms(5); //delay 50ms
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return 0;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 设置一个频点 BK1080
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@param curFreq：设置频点
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@return 无
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@note void bk1080_setfreq(u16 curFreq)
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*/
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/*----------------------------------------------------------------------------*/
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static void bk1080_setfreq(u16 curFreq)
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{
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u8 curChan;
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u16 temp;
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curChan = curFreq - MIN_FRE;
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temp = curChan << 8;
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BEKEN_I2c_Write(0x03, (u8 *)&temp, 2); //write reg3,with 2 bytes
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temp |= 0x80;
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BEKEN_I2c_Write(0x03, (u8 *)&temp, 2);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 设置一个频点BK1080
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@param fre 频点 875~1080
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@return 1：当前频点有台，0：当前频点无台
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@note bool bk1080_set_fre(u16 freq)
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*/
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/*----------------------------------------------------------------------------*/
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static bool bk1080_set_fre(void *priv, u16 freq)
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{
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static u16 last_tuned_freq = 0;
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static u16 g_last_freq_deviation_value = 0;
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u8 temp[4];
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u16 cur_freq_deviation;
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bk1080_setfreq(freq);
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delay_n10ms(4); //延时时间>=30ms
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///////////////////////////////////////////////////////////////////
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//new added 2009-05-30
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BEKEN_I2c_Read(0x07, temp, 2); //start from reg 0x7,with 2bytes
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cur_freq_deviation = (temp[0] << 8) | temp[1];
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cur_freq_deviation = cur_freq_deviation >> 4;
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BEKEN_I2c_Read(0x0a, &temp[2], 2);
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/////////////////////////////////////////////////////////////////////
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if (temp[2] & 0x10) { //check AFCRL bit12
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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if (temp[3] < 8) { //RSSI<10 //搜台较少可减少该值，假台较多可增大该值 //8
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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if ((temp[1] & 0x0f) < 2) { //SNR<2 //搜台较少可减少该值，假台较多可增大该值
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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/////////////////////////////////////////////////////////////////////////
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//add frequency devation check
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if ((cur_freq_deviation >= 192) && (cur_freq_deviation <= (0xfff - 192))) { //0x64 //搜台较少可减少该值，假台较多可增大该值
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////
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//new added 2009-05-30
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if ((freq > 875) && ((freq - last_tuned_freq) == 1)) { //start_freq)&&( (freq-last_tuned_freq)==1) )
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if (g_last_freq_deviation_value & 0x800) {
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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if (g_last_freq_deviation_value < 150) { //搜台较少可减少该值，假台较多可增大该值
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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}
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if ((freq >= 875) && ((last_tuned_freq - freq) == 1)) { //start_freq)&&( (last_tuned_freq - freq)==1) )
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if ((g_last_freq_deviation_value & 0x800) == 0) {
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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if (g_last_freq_deviation_value > (0xfff - 150)) { //搜台较少可减少该值，假台较多可增大该值
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 0;
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}
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}
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last_tuned_freq = freq; //save last tuned freqency
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g_last_freq_deviation_value = cur_freq_deviation;
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return 1;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 关闭 BK1080的电源
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@param 无
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@return 无
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@note void BK1080_PowerDown(void)
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*/
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/*----------------------------------------------------------------------------*/
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static int bk1080_powerdown(void *priv)
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{
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u16 temp = 0x4102;
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//temp[0] = 0x02; //write 0x0241 into reg2
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//temp[1] = 0x41;
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BEKEN_I2c_Write(0x02, (u8 *)&temp, 2);
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/* dac_channel_off(FM_IIC_CHANNEL, FADE_ON); */
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delay_n10ms(5); //delay 50ms
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return 0;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief FM 模块静音控制
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@param dir：1-mute 0-unmute
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@return 无
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@note void BK1080_mute(dir)
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*/
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/*----------------------------------------------------------------------------*/
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static void bk1080_mute(void *priv, u8 flag)
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{
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u8 TmpData8[2];
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BEKEN_I2c_Read(2, TmpData8, 2);
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if (flag) {
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TmpData8[0] |= 0x40; //mute
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} else {
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TmpData8[0] &= 0xbf;
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}
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BEKEN_I2c_Write(2, TmpData8, 2);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief FM模块检测，获取BK1080 模块ID
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@param 无
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@return 检测到BK1080模块返回1，否则返回0
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@note bool BK1080_Read_ID(void)
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*/
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/*----------------------------------------------------------------------------*/
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static bool bk1080_read_id(void *priv)
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{
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u16 bk_id = 0;
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BEKEN_I2c_Read(0x01, (u8 *)&bk_id, 2); //read reg3,with 2 bytes
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if (0x8010 == bk_id) {
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return TRUE;
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}
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return FALSE;
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}
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REGISTER_FM(bk1080) = {
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.logo = "bk1080",
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.init = bk1080_init,
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.close = bk1080_powerdown,
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.set_fre = bk1080_set_fre,
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.mute = bk1080_mute,
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.read_id = bk1080_read_id,
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};
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#endif
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