Sakai Ritaro / KT0915

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KT0915.cpp@0:e5bccd46b6db, 2018-01-09 (annotated)

Committer:
ritarosakai
Date:
Tue Jan 09 11:44:11 2018 +0000
Revision:
0:e5bccd46b6db
Child:
2:108a1ae04859
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ritarosakai 0:e5bccd46b6db 1 #include "mbed.h"
ritarosakai 0:e5bccd46b6db 2 #include "KT0915.h"
ritarosakai 0:e5bccd46b6db 3
ritarosakai 0:e5bccd46b6db 4 KT0915::KT0915(PinName sda,PinName scl):
ritarosakai 0:e5bccd46b6db 5 _KT0915(sda,scl)
ritarosakai 0:e5bccd46b6db 6 {
ritarosakai 0:e5bccd46b6db 7 _KT0915.frequency(100000);
ritarosakai 0:e5bccd46b6db 8 }
ritarosakai 0:e5bccd46b6db 9
ritarosakai 0:e5bccd46b6db 10 void KT0915::init(void)
ritarosakai 0:e5bccd46b6db 11 {
ritarosakai 0:e5bccd46b6db 12 int data1,data2;
ritarosakai 0:e5bccd46b6db 13 write_reg(0x02, 0b00000000, 0b00000111);//FM space:100KHz, R/L mute:disable
ritarosakai 0:e5bccd46b6db 14 write_reg(0x04, 0b11100000, 0b10010000);//FM/AM/device mute:disable, bass:disable DAC cap:60uF
ritarosakai 0:e5bccd46b6db 15 write_reg(0x05, 0b10011000, 0b00100000);//Mono:enable, de-emphasis:50uF, blend:disable
ritarosakai 0:e5bccd46b6db 16 write_reg(0x0A, 0b00000100, 0b00000000);//LDO:highest, FM AFC:enable
ritarosakai 0:e5bccd46b6db 17 write_reg(0x0C, 0b00000000, 0b00101100);//FM wide freq:enable
ritarosakai 0:e5bccd46b6db 18 write_reg(0x0F, 0b10001000, 0b00000000);//Stanby:disable, volume:0
ritarosakai 0:e5bccd46b6db 19 write_reg(0x22, 0b10100010, 0b11101100);//AM AGC fast win:fastest, AM AGC short win:slowest
ritarosakai 0:e5bccd46b6db 20 //AM bandwidth:6KHz, AM gain:12dB, Left Inverse Control:enable
ritarosakai 0:e5bccd46b6db 21 read_reg(0x23, &data1, &data2);
ritarosakai 0:e5bccd46b6db 22 write_reg(0x23, (data1 | 0b00011100), data2);//low th:B
ritarosakai 0:e5bccd46b6db 23 write_reg(0x2E, 0b00101000, 0b10001100);//softmute:fast, AM softmute start level:0b100
ritarosakai 0:e5bccd46b6db 24 //softmute target volume:0b0100, softmute mode:RSSI, FM softmute start threshold:0b100
ritarosakai 0:e5bccd46b6db 25 write_reg(0x33, 0b01010100, 0b00000001);//AM space:9KHz
ritarosakai 0:e5bccd46b6db 26 read_reg(0x3F, &data1, &data2);
ritarosakai 0:e5bccd46b6db 27 write_reg(0x3F, data1, ((data2 & 0b10001000) | 0b00010011));//RF AGC patch
ritarosakai 0:e5bccd46b6db 28 }
ritarosakai 0:e5bccd46b6db 29
ritarosakai 0:e5bccd46b6db 30 int KT0915::getID(void)
ritarosakai 0:e5bccd46b6db 31 {
ritarosakai 0:e5bccd46b6db 32 int data1,data2;
ritarosakai 0:e5bccd46b6db 33 read_reg(0x01,&data1,&data2);
ritarosakai 0:e5bccd46b6db 34 return (data1<<8)+data2;
ritarosakai 0:e5bccd46b6db 35 }
ritarosakai 0:e5bccd46b6db 36
ritarosakai 0:e5bccd46b6db 37 void KT0915::set_vol(int vol)
ritarosakai 0:e5bccd46b6db 38 {
ritarosakai 0:e5bccd46b6db 39 int data1, data2;
ritarosakai 0:e5bccd46b6db 40 read_reg(0x0F, &data1, &data2);
ritarosakai 0:e5bccd46b6db 41 if ((data2 & 0b00011111) != vol) {
ritarosakai 0:e5bccd46b6db 42 write_reg(0x0F, data1, (data2 >> 5) * 0b100000 + vol);
ritarosakai 0:e5bccd46b6db 43 }
ritarosakai 0:e5bccd46b6db 44 }
ritarosakai 0:e5bccd46b6db 45
ritarosakai 0:e5bccd46b6db 46 void KT0915::set_freq(bool mode,int freq)
ritarosakai 0:e5bccd46b6db 47 {
ritarosakai 0:e5bccd46b6db 48 int f_upper, f_lower, freq2;
ritarosakai 0:e5bccd46b6db 49 if (mode == 0) {
ritarosakai 0:e5bccd46b6db 50 write_reg(0x16, 0b10000000, 0b11000010);
ritarosakai 0:e5bccd46b6db 51 f_upper = (freq >> 8 | 0b10000000);
ritarosakai 0:e5bccd46b6db 52 f_lower = freq & 0b11111111;
ritarosakai 0:e5bccd46b6db 53 write_reg(0x17, f_upper, f_lower);
ritarosakai 0:e5bccd46b6db 54 }
ritarosakai 0:e5bccd46b6db 55 if (mode == 1) {
ritarosakai 0:e5bccd46b6db 56 write_reg(0x16, 0b00000000, 0b11000010);
ritarosakai 0:e5bccd46b6db 57 freq2 = freq / 5;
ritarosakai 0:e5bccd46b6db 58 f_upper = (freq2 >> 8 | 0b10000000);
ritarosakai 0:e5bccd46b6db 59 f_lower = freq2 & 0b11111111;
ritarosakai 0:e5bccd46b6db 60 write_reg(0x03, f_upper, f_lower);
ritarosakai 0:e5bccd46b6db 61 }
ritarosakai 0:e5bccd46b6db 62 }
ritarosakai 0:e5bccd46b6db 63
ritarosakai 0:e5bccd46b6db 64 int KT0915::get_rssi(bool mode)
ritarosakai 0:e5bccd46b6db 65 {
ritarosakai 0:e5bccd46b6db 66 int rssi, data1, data2;
ritarosakai 0:e5bccd46b6db 67 if (mode == 0) {
ritarosakai 0:e5bccd46b6db 68 read_reg(0x24, &data1, &data2);
ritarosakai 0:e5bccd46b6db 69 rssi = -90 + ( data1 & 0b00011111) * 3;
ritarosakai 0:e5bccd46b6db 70 }
ritarosakai 0:e5bccd46b6db 71 if (mode == 1) {
ritarosakai 0:e5bccd46b6db 72 read_reg(0x12, &data1, &data2);
ritarosakai 0:e5bccd46b6db 73 rssi = -100 + (data2 >> 3) * 3;
ritarosakai 0:e5bccd46b6db 74 }
ritarosakai 0:e5bccd46b6db 75 return rssi;
ritarosakai 0:e5bccd46b6db 76 }
ritarosakai 0:e5bccd46b6db 77
ritarosakai 0:e5bccd46b6db 78 int KT0915::get_snr(bool mode)
ritarosakai 0:e5bccd46b6db 79 {
ritarosakai 0:e5bccd46b6db 80 int snr, data1, data2;
ritarosakai 0:e5bccd46b6db 81 if (mode == 1) {
ritarosakai 0:e5bccd46b6db 82 read_reg(0x14, &data1, &data2);
ritarosakai 0:e5bccd46b6db 83 snr = (data1 & 0b00011111) * 0b100 + (data2 >> 6);
ritarosakai 0:e5bccd46b6db 84 }
ritarosakai 0:e5bccd46b6db 85 return snr;
ritarosakai 0:e5bccd46b6db 86 }
ritarosakai 0:e5bccd46b6db 87
ritarosakai 0:e5bccd46b6db 88 bool KT0915::get_ready(void)
ritarosakai 0:e5bccd46b6db 89 {
ritarosakai 0:e5bccd46b6db 90 int data1,data2;
ritarosakai 0:e5bccd46b6db 91 read_reg(0x14,&data1,&data2);
ritarosakai 0:e5bccd46b6db 92 return (data1&0b00100000)>>5;
ritarosakai 0:e5bccd46b6db 93 }
ritarosakai 0:e5bccd46b6db 94
ritarosakai 0:e5bccd46b6db 95 void KT0915::cali(void)//re_cali
ritarosakai 0:e5bccd46b6db 96 {
ritarosakai 0:e5bccd46b6db 97 write_reg(0x10,0b01100000,0b00000000);
ritarosakai 0:e5bccd46b6db 98 }
ritarosakai 0:e5bccd46b6db 99
ritarosakai 0:e5bccd46b6db 100
ritarosakai 0:e5bccd46b6db 101 void KT0915::write_reg(int memory_address,int data1,int data2)
ritarosakai 0:e5bccd46b6db 102 {
ritarosakai 0:e5bccd46b6db 103 char cmd[3]= {memory_address,data1,data2};
ritarosakai 0:e5bccd46b6db 104 _KT0915.write(KT0915_address,cmd,3);
ritarosakai 0:e5bccd46b6db 105 }
ritarosakai 0:e5bccd46b6db 106
ritarosakai 0:e5bccd46b6db 107 void KT0915::read_reg(int memory_address,int *data1,int *data2)
ritarosakai 0:e5bccd46b6db 108 {
ritarosakai 0:e5bccd46b6db 109 char cmd[2];
ritarosakai 0:e5bccd46b6db 110 cmd[0]=memory_address;
ritarosakai 0:e5bccd46b6db 111 _KT0915.write(KT0915_address,cmd,1,true);
ritarosakai 0:e5bccd46b6db 112 _KT0915.read(KT0915_address|1,cmd,2);
ritarosakai 0:e5bccd46b6db 113 *data1=cmd[0];
ritarosakai 0:e5bccd46b6db 114 *data2=cmd[1];
ritarosakai 0:e5bccd46b6db 115 }