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i2c master with interrupt
Fork of freemaster2_1 by
Diff: main.cpp
- Revision:
- 2:2dd5bd9a64fb
- Parent:
- 1:8e4b5e1f8039
diff -r 8e4b5e1f8039 -r 2dd5bd9a64fb main.cpp --- a/main.cpp Mon Dec 08 03:54:47 2014 +0000 +++ b/main.cpp Wed Dec 10 16:39:17 2014 +0000 @@ -3,29 +3,46 @@ const int addr = 0x20; //slave address I2C master (D14,D15); //configure pins p27,p28 as I2C master Serial pc (USBTX,USBRX); - -void main() +DigitalOut interrupt(D9); +InterruptIn data_ready(D10); +void FUNC_I2C_MASTER() { - printf("press backspace for master to start \n\r"); - while(1){ - if(pc.getc()==8){ - bool ack0 =true; + //printf("press backspace for master to start \n\r"); + //while(1){ + // interrupt = 0; + // if(pc.getc()=='z'){ + interrupt = 1; + printf("\nEntered master function\n"); + int ack0 =true; char *data = new char; *data = 'b'; bool loopvariable0 = true; master.frequency(100000); //set clock frequency //master.start(); - while(ack0){ + while(ack0) + { //printf("2 master clk freq setup and addressing slave\n\r"); - + master.start(); //initiating the data transfer - ack0 = (bool) master.read(addr,data,1);} - if(!ack0){ - printf("3 master has read %c from slave\n\r",*data); + ack0 = master.read(addr,data,1); + } + if(!ack0) + { + printf("\n master has read %c from slave\n\r",*data); loopvariable0=false; - } } - printf("done\n\r"); - } + //master.stop(); + + //printf("done\n\r"); + delete data; + interrupt=0; +} +void main() +{ + data_ready.rise(&FUNC_I2C_MASTER); + printf("\nstarted master\n"); + while(1) + { + ; } - \ No newline at end of file +} \ No newline at end of file