Garrett Jones / Mbed 2 deprecated Radio_Transmitter_Working

Working mbed code for the Adafruit 1958 radio transmitter. Does not include RDS support.

Dependencies:   Adafruit_Si4713 TextLCD mbed

main.cpp@0:eae01b881372, 2017-01-25 (annotated)

Committer:
gjones20
Date:
Wed Jan 25 05:17:49 2017 +0000
Revision:
0:eae01b881372
Working mbed code for the Adafruit 1958 radio transmitter. Does not include RDS support.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gjones20 0:eae01b881372 1 #include "mbed.h"
gjones20 0:eae01b881372 2 #include "TextLCD.h"
gjones20 0:eae01b881372 3 #include "Adafruit_Si4713.h"
gjones20 0:eae01b881372 4
gjones20 0:eae01b881372 5 TextLCD lcd(p19,p20,p21,p22,p23,p24);
gjones20 0:eae01b881372 6 AnalogIn Ain(p18);
gjones20 0:eae01b881372 7
gjones20 0:eae01b881372 8 InterruptIn decrease(p6);
gjones20 0:eae01b881372 9 InterruptIn increase(p7);
gjones20 0:eae01b881372 10 Timer debounce;
gjones20 0:eae01b881372 11
gjones20 0:eae01b881372 12 uint16_t fmstation=10740;
gjones20 0:eae01b881372 13
gjones20 0:eae01b881372 14 I2C myi2c(p9,p10);
gjones20 0:eae01b881372 15 Adafruit_Si4713 radio = Adafruit_Si4713(myi2c, p5, 0x63<<1);
gjones20 0:eae01b881372 16
gjones20 0:eae01b881372 17 void StationDown();
gjones20 0:eae01b881372 18 void StationUp();
gjones20 0:eae01b881372 19
gjones20 0:eae01b881372 20 void StationDown() {
gjones20 0:eae01b881372 21 if (debounce.read_ms()>200 && fmstation >= 8800) {
gjones20 0:eae01b881372 22 fmstation=fmstation-10;
gjones20 0:eae01b881372 23 radio.tuneFM(fmstation);
gjones20 0:eae01b881372 24 debounce.reset();
gjones20 0:eae01b881372 25 }
gjones20 0:eae01b881372 26 }
gjones20 0:eae01b881372 27
gjones20 0:eae01b881372 28 void StationUp() {
gjones20 0:eae01b881372 29 if (debounce.read_ms()>200 && fmstation <= 10800) {
gjones20 0:eae01b881372 30 fmstation=fmstation+10;
gjones20 0:eae01b881372 31 radio.tuneFM(fmstation);
gjones20 0:eae01b881372 32 debounce.reset();
gjones20 0:eae01b881372 33 }
gjones20 0:eae01b881372 34 }
gjones20 0:eae01b881372 35
gjones20 0:eae01b881372 36 int main() {
gjones20 0:eae01b881372 37
gjones20 0:eae01b881372 38 printf("Adafruit Radio - Si4713 Test\r\n");
gjones20 0:eae01b881372 39
gjones20 0:eae01b881372 40 if (! radio.begin()) {
gjones20 0:eae01b881372 41 printf("Couldn't find radio?\r\n");
gjones20 0:eae01b881372 42 while (1);
gjones20 0:eae01b881372 43 }
gjones20 0:eae01b881372 44
gjones20 0:eae01b881372 45 /*
gjones20 0:eae01b881372 46 // Uncomment to scan power of entire range from 87.5 to 108.0 MHz
gjones20 0:eae01b881372 47 for (uint16_t f = 8750; f<10800; f+=10) {
gjones20 0:eae01b881372 48 radio.readTuneMeasure(f);
gjones20 0:eae01b881372 49 printf("Measuring %.1f\t",f/100.0);
gjones20 0:eae01b881372 50 radio.readTuneStatus();
gjones20 0:eae01b881372 51 printf("%i\r\n",radio.currNoiseLevel);
gjones20 0:eae01b881372 52 }
gjones20 0:eae01b881372 53 */
gjones20 0:eae01b881372 54
gjones20 0:eae01b881372 55 printf("\n\rSet TX power");
gjones20 0:eae01b881372 56 radio.setTXpower(115); // dBuV, 88-115 max
gjones20 0:eae01b881372 57
gjones20 0:eae01b881372 58
gjones20 0:eae01b881372 59 printf("\n\rTuning into %.1f\r\n",fmstation/100.0);
gjones20 0:eae01b881372 60 radio.tuneFM(fmstation);
gjones20 0:eae01b881372 61
gjones20 0:eae01b881372 62 // This will tell you the status in case you want to read it from the chip
gjones20 0:eae01b881372 63 radio.readTuneStatus();
gjones20 0:eae01b881372 64 printf("\tCurr freq: %d\r\n", radio.currFreq);
gjones20 0:eae01b881372 65 printf("\tCurr freqdBuV: %d\r\n", radio.currdBuV);
gjones20 0:eae01b881372 66 printf("\tCurr ANTcap: %d\r\n", radio.currAntCap);
gjones20 0:eae01b881372 67
gjones20 0:eae01b881372 68 debounce.start();
gjones20 0:eae01b881372 69 decrease.rise(&StationDown);
gjones20 0:eae01b881372 70 increase.rise(&StationUp);
gjones20 0:eae01b881372 71
gjones20 0:eae01b881372 72 while(1) {
gjones20 0:eae01b881372 73 lcd.cls();
gjones20 0:eae01b881372 74 lcd.printf("FM STATION\n");
gjones20 0:eae01b881372 75 lcd.printf("%1.1f MHz",fmstation/100.0);
gjones20 0:eae01b881372 76 wait(0.25);
gjones20 0:eae01b881372 77 }
gjones20 0:eae01b881372 78 //printf("\n\rTuning into %.1f\r\n",fmstation/100.0);
gjones20 0:eae01b881372 79
gjones20 0:eae01b881372 80 }
gjones20 0:eae01b881372 81