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