luca visconti / Mbed OS NUCLEO_TRANSMITS_8_INFRARED_COMMANDS

for each button pressed nucleo sends a command, used to interface citroen steering wheel command to keenwood car radio

Dependencies:   MBC002-DigitalIn

Fork of steering_wheel_controls_TO_KEENWOOD_RADIO_INFRARED_INTERFACE by luca visconti

main.cpp@10:4ff4a376a6fd, 2018-07-04 (annotated)

Committer:
lucaVisconti
Date:
Wed Jul 04 13:49:20 2018 +0000
Revision:
10:4ff4a376a6fd
Parent:
9:33d8b36e81d4 
STM32 NUCLEO-F401RE steering wheel command infrared interface to KEENWOOD CAR RADIO

Who changed what in which revision?

UserRevisionLine numberNew contents of line
leandropg 0:4265ec26da85 1 #include "mbed.h"
leandropg 0:4265ec26da85 2
lucaVisconti 10:4ff4a376a6fd 3 // DEFINE AN ARRAY FOR EACH COMMAND YOU NEED, IT CONTAINS A SEQUENCE OF VALUE FOR EACH COMMAND WE NEED,
lucaVisconti 10:4ff4a376a6fd 4 // SEE DOCUMENTATION: COMMAND PROTOCOL DETAILS
lucaVisconti 8:f8a9b7dbf399 5
lucaVisconti 10:4ff4a376a6fd 6 int ARRAY_SOURCE[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,64,21,21,21,21,21,21,21,21,21,21,21,64,21,64,21,21,21,64,21,64,21,64,21};
lucaVisconti 10:4ff4a376a6fd 7 int ARRAY_TEL[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,21,21,64,21,21,21,21,21,64,21,21,21,21,21,64,21,64,21,21,21,64,21,64,21,21,21,64,21,64,21,21,21};
lucaVisconti 10:4ff4a376a6fd 8 int ARRAY_VOLUP[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,21,21,21,21,64,21,21,21,64,21,21,21,21,21,21,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,64,21,1};
lucaVisconti 10:4ff4a376a6fd 9 int ARRAY_VOLDWN[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,64,21,21,21,64,21,21,21,64,21,21,21,21,21,21,21,21,21,64,21,21,21,64,21,21,21,64,21,64,21,64,21};
lucaVisconti 10:4ff4a376a6fd 10 int ARRAY_FF[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,64,21,64,21,21,21,64,21,21,21,21,21,21,21,21,21,21,21,21,21,64,21,21,21,64,21,64,21,64,21,64,21};
lucaVisconti 10:4ff4a376a6fd 11 int ARRAY_RR[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,21,21,64,21,21,21,64,21,21,21,21,21,21,21,21,21,64,21,21,21,64,21,21,21,64,21,64,21,64,21,64,21};
lucaVisconti 10:4ff4a376a6fd 12 int ARRAY_ROTUP[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,21,21,21,21,64,21,21,21,21,21,64,21,64,21,64,21,64,21};
lucaVisconti 10:4ff4a376a6fd 13 int ARRAY_ROTDWN[] = {342,171,21,64,21,21,21,21,21,64,21,64,21,64,21,21,21,64,21,21,21,64,21,64,21,21,21,21,21,21,21,64,21,21,21,21,21,21,21,64,21,64,21,21,21,21,21,21,21,21,21,64,21,64,21,21,21,21,21,64,21,64,21,64,21,64,21};
lucaVisconti 10:4ff4a376a6fd 14
lucaVisconti 10:4ff4a376a6fd 15 //DEFINE MY OUTPUTS: "led" is IRLED (anode connected on PC_0, catode on GND), "myled" is STM32 NUCLEO board-led
lucaVisconti 1:1bd5272d7a1f 16 DigitalOut myled(LED1);
leandropg 0:4265ec26da85 17 DigitalOut led(PC_0);
leandropg 0:4265ec26da85 18
lucaVisconti 1:1bd5272d7a1f 19
lucaVisconti 1:1bd5272d7a1f 20 //Define an input port for each command
lucaVisconti 10:4ff4a376a6fd 21 DigitalIn pushButton1(PC_1); //connect "SOURCE" steering wheel controls button to STMF401RE PC_1 port
lucaVisconti 10:4ff4a376a6fd 22 DigitalIn pushButton2(PC_2); //connect "TEL" steering wheel controls button to STMF401RE PC_2 port
lucaVisconti 10:4ff4a376a6fd 23 DigitalIn pushButton3(PC_3); //connect "VOLUP" steering wheel controls button to STMF401RE PC_3 port
lucaVisconti 10:4ff4a376a6fd 24 DigitalIn pushButton4(PC_4); //connect "VOLDWN" steering wheel controls button to STMF401RE PC_4 port
lucaVisconti 10:4ff4a376a6fd 25 DigitalIn pushButton5(PC_5); //connect "FF" steering wheel controls button to STMF401RE PC_5 port
lucaVisconti 10:4ff4a376a6fd 26 DigitalIn pushButton6(PC_6); //connect "RR" steering wheel controls button to STMF401RE PC_6 port
lucaVisconti 10:4ff4a376a6fd 27 DigitalIn pushButton7(PC_7); //connect "ROTUP" steering wheel controls button to STMF401RE PC_7 port
lucaVisconti 10:4ff4a376a6fd 28 DigitalIn pushButton8(PC_8); //connect "ROTDWN" steering wheel controls button to STMF401RE PC_8 port
lucaVisconti 10:4ff4a376a6fd 29
lucaVisconti 1:1bd5272d7a1f 30
lucaVisconti 1:1bd5272d7a1f 31 //int x;
leandropg 0:4265ec26da85 32
leandropg 0:4265ec26da85 33 // Main Loop runs in its own thread in the OS
leandropg 0:4265ec26da85 34 int main() {
leandropg 0:4265ec26da85 35
leandropg 0:4265ec26da85 36 // Active Pull-Up Resistor
lucaVisconti 1:1bd5272d7a1f 37 pushButton1.mode(PullDown);
lucaVisconti 1:1bd5272d7a1f 38 pushButton2.mode(PullDown);
lucaVisconti 10:4ff4a376a6fd 39 pushButton3.mode(PullDown);
lucaVisconti 10:4ff4a376a6fd 40 pushButton4.mode(PullDown);
lucaVisconti 10:4ff4a376a6fd 41 pushButton5.mode(PullDown);
lucaVisconti 10:4ff4a376a6fd 42 pushButton6.mode(PullDown);
lucaVisconti 10:4ff4a376a6fd 43 pushButton7.mode(PullDown);
lucaVisconti 10:4ff4a376a6fd 44 pushButton8.mode(PullDown);
leandropg 0:4265ec26da85 45 // Inifite Loop
lucaVisconti 1:1bd5272d7a1f 46
lucaVisconti 1:1bd5272d7a1f 47 while(1) {
lucaVisconti 1:1bd5272d7a1f 48
lucaVisconti 1:1bd5272d7a1f 49 // DEFINE for each button pressed which is the array to send
lucaVisconti 9:33d8b36e81d4 50 int ARRAY_SEND[67];
lucaVisconti 3:82270ac03cb7 51 int i;
lucaVisconti 9:33d8b36e81d4 52 if(pushButton1 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_SOURCE[i];} }
lucaVisconti 9:33d8b36e81d4 53 else if(pushButton2 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_TEL[i];} }
lucaVisconti 10:4ff4a376a6fd 54 else if(pushButton3 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_VOLUP[i];} }
lucaVisconti 10:4ff4a376a6fd 55 else if(pushButton4 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_VOLDWN[i];} }
lucaVisconti 10:4ff4a376a6fd 56 else if(pushButton5 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_FF[i];} }
lucaVisconti 10:4ff4a376a6fd 57 else if(pushButton6 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_RR[i];} }
lucaVisconti 10:4ff4a376a6fd 58 else if(pushButton7 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_ROTUP[i];} }
lucaVisconti 10:4ff4a376a6fd 59 else if(pushButton8 == 1) { for (i=0;i<67;i++) {ARRAY_SEND[i]=ARRAY_ROTDWN[i];} }
lucaVisconti 10:4ff4a376a6fd 60 // IF any button is pressed the outputs level is 0
lucaVisconti 10:4ff4a376a6fd 61 else {
lucaVisconti 1:1bd5272d7a1f 62 // LEDs Turn-Off
leandropg 0:4265ec26da85 63 led = 0;
lucaVisconti 1:1bd5272d7a1f 64 myled =0;
leandropg 0:4265ec26da85 65 }
lucaVisconti 10:4ff4a376a6fd 66 //If a button is 1 CREATE A IRPULSE WAVEFORM THAT FOLLOW THE ARRAY_SEND
lucaVisconti 10:4ff4a376a6fd 67 if (pushButton1==1 || pushButton2 ==1 || pushButton3 ==1 || pushButton4 ==1 || pushButton5 ==1 || pushButton6 ==1 || pushButton7 ==1 || pushButton8 ==1 ) {
lucaVisconti 6:69152576b147 68 //From BIT 0 to the final BIT OF ARRAYSEND
lucaVisconti 10:4ff4a376a6fd 69 int BIT,n;
lucaVisconti 9:33d8b36e81d4 70 for (BIT = 0; BIT < 67; BIT ++) {
lucaVisconti 10:4ff4a376a6fd 71 //if the position of BIT in ARRAYSEND is even, turn on/off the IRLED and BOARD LED following a 38000Hz modulation(13usON/13usOFF) for a number of cicles = BIT value
lucaVisconti 10:4ff4a376a6fd 72 if ( BIT % 2==0) {
lucaVisconti 10:4ff4a376a6fd 73 for (n =1; n <= ARRAY_SEND[BIT]; n++){
lucaVisconti 1:1bd5272d7a1f 74 myled =1;
lucaVisconti 10:4ff4a376a6fd 75 led =1;
lucaVisconti 10:4ff4a376a6fd 76 wait_us (13);
lucaVisconti 10:4ff4a376a6fd 77 myled =0;
lucaVisconti 10:4ff4a376a6fd 78 led =0;
lucaVisconti 10:4ff4a376a6fd 79 wait_us (13);
lucaVisconti 10:4ff4a376a6fd 80 }}
lucaVisconti 10:4ff4a376a6fd 81 //if the position of BIT in ARRAYSEND is odd, turn off the IRLED and BOARD LED following a 38000Hz modulation(13us+13us=26us OFF) for a number of cicles = BIT value
lucaVisconti 10:4ff4a376a6fd 82 else {
lucaVisconti 10:4ff4a376a6fd 83 for (n =1; n <= ARRAY_SEND[BIT]; n++){
lucaVisconti 1:1bd5272d7a1f 84 myled =0;
lucaVisconti 10:4ff4a376a6fd 85 led =0;
lucaVisconti 10:4ff4a376a6fd 86 wait_us (26);
lucaVisconti 10:4ff4a376a6fd 87 }}
lucaVisconti 10:4ff4a376a6fd 88 } // end for
lucaVisconti 10:4ff4a376a6fd 89 //PUT 100000us OFF at the end of ARRAY_SEND IRPULSE WAVEFORM
lucaVisconti 9:33d8b36e81d4 90 myled =0;
lucaVisconti 10:4ff4a376a6fd 91 led =0;
lucaVisconti 10:4ff4a376a6fd 92 wait_us (110000);
lucaVisconti 10:4ff4a376a6fd 93 } // end if
lucaVisconti 10:4ff4a376a6fd 94 } //end while
lucaVisconti 10:4ff4a376a6fd 95 } //end main