Petter Bellander
Simulated the CD changer of a Saab to implement a bluetooth connection to the car stereo. Control of playback device (phone) with steering wheel buttons. Needs a RN52 bluetooth transciever and a CAN transiever. So far only audio playback and control via steering wheel buttons implemented. Hands free calling planned.
Diff: main.cpp
- Revision:
- 0:6cf6e566c0da
- Child:
- 2:10c60edc8573
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Jan 04 15:31:12 2016 +0000
@@ -0,0 +1,117 @@
+// Inspired from BlueSaab
+// Project/Hardware: http://bluesaab.blogspot.com/
+// Code: https://github.com/kveilands/SAAB-CDC/tree/master/SAAB-CDC
+// I-Bus information from http://pikkupossu.1g.fi/tomi/projects/i-bus/i-bus.html
+
+#include "mbed.h"
+#include "CDC.h"
+#include "RN52.h"
+
+CDC cdc;
+RN52 rn52;
+RN52_RESULT res;
+
+Timer playback;
+
+
+Serial pc(USBTX, USBRX); // tx, rx
+
+int main() {
+ printf("Petters BT CDC-emulator\r\n");
+ printf("Initializing\r\n");
+ cdc.init();
+ rn52.init();
+ printf("Starting loop\r\n");
+ playback.start(); //only for debug
+ while(1) {
+ if(pc.readable()) {
+ switch (pc.getc()) {
+ case 'p':
+ if(rn52.set(RN52_PLAYPAUSE)) {
+ printf("play/pause\r\n");
+ }
+ break;
+ case 'v':
+ printf("volume up\r\n");
+ rn52.set(RN52_VOLUMEUP);
+ break;
+ case 'n':
+ printf("next track\r\n");
+ rn52.set(RN52_NEXTTRACK);
+ break;
+ case 'q':
+ printf("getting status\r\n");
+ rn52.get(RN52_GETSTATUS, &res);
+ printf("%s", res.response);
+ case 't':
+ rn52.get(RN52_CALLER_ID, &res);
+ printf("%s", res.response);
+ }
+ }
+ cdc.set_time((char)(((int)playback.read())/60),(char)(((int)playback.read())%60));
+ switch (cdc.get_cmd()) {
+ case IBUS_OTHER_MESSAGE:
+ break;
+ case IBUS_DOORS_LOCKED:
+ break;
+ case IBUS_DOORS_UNLOCKED:
+ break;
+ case IBUS_NEXT:
+ cdc.display("NEXT");
+ rn52.set(RN52_PLAYPAUSE);
+ break;
+ case IBUS_CDC_ON:
+ cdc.display("CDC ON");
+ break;
+ case IBUS_CDC_OFF:
+ cdc.display("CDC OFF");
+ break;
+ case IBUS_VOLUME_UP:
+ cdc.display("VOLUME UP");
+ rn52.set(RN52_VOLUMEUP);
+ break;
+ case IBUS_VOLUME_DOWN:
+ cdc.display("VOLUME DOWN");
+ break;
+ case IBUS_SKIP_FW:
+ cdc.display("SKIP FW");
+ rn52.set(RN52_NEXTTRACK);
+ break;
+ case IBUS_SKIP_BW:
+ cdc.display("SKIP BW");
+ rn52.set(RN52_PREVTRACK);
+ break;
+ case IBUS_SET:
+ cdc.display("SET");
+ rn52.set(RN52_CONNECT);
+ break;
+ case IBUS_CLEAR:
+ cdc.display("CLEAR");
+ rn52.set(RN52_DISCONNECT);
+ break;
+ }
+ if(rn52.changed()) {
+ rn52.get(RN52_GETSTATUS, &res);
+ switch (res.event) {
+ case RN52_CALLER_ID_EVENT:
+ rn52.get(RN52_CALLER_ID, &res);
+ break;
+ case RN52_TRACK_CHANGE_EVENT:
+ rn52.get(RN52_TRACK_METADATA, &res);
+ playback.reset();
+ break;
+ default: //no event occured, check connection status
+ if(res.connection == RN52_AUDIO_STREAMING) {
+ cdc.display("BT SPELAR");
+ playback.start();
+ }
+ else {
+ playback.stop();
+ playback.reset();
+ }
+
+ }
+
+ }
+ }
+}
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