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while loop removed ( master cant send)
Fork of slave_working_obama by
Diff: main.cpp
- Revision:
- 5:ce0bb4174ca4
- Parent:
- 4:133b49d51b18
- Child:
- 6:8aea752c6eda
--- a/main.cpp Wed Dec 10 10:33:56 2014 +0000 +++ b/main.cpp Wed Dec 10 16:38:29 2014 +0000 @@ -6,6 +6,8 @@ I2CSlave slave(D14,D15); //configuring pins p27, p28 as I2Cslave Serial pc (USBTX,USBRX); InterruptIn interrupt(D9); +DigitalOut data_ready(D10); +int i2c_status=0; //read/write mode for i2c 0 : write2slave, 1 : write2master typedef struct { @@ -16,7 +18,7 @@ Mail<i2c_data,16> i2c_data_receive; Mail<i2c_data,16> i2c_data_send; -void FUNC_I2C_WRITE2CDMS(char *data_receive,char *data_send, int length=1) +void FUNC_I2C_WRITE2CDMS(char *data, int length=1) { int slave_status = 1; @@ -25,7 +27,7 @@ slave.address(0x20); if(slave.receive()==1) { - slave_status=slave.write(data_send,length); + slave_status=slave.write(data,length); // printf("\n In the while loop\n"); /*if(!slave_status) @@ -39,7 +41,7 @@ if(slave.receive()==3 || slave.receive()==2) { //i2c_data *i2c_data_r = i2c_data_receive.alloc(); - slave_status=slave.read(data_receive,length); + slave_status=slave.read(data,length); /*if(!slave_status) { printf("1 read %c from master\n\r",*data); @@ -54,16 +56,35 @@ void T_I2C_BAE(void const * args) { char data_send,data_receive; - data_send = 'a'; + //data_send = 'a'; while(1) { Thread::signal_wait(0x1); - FUNC_I2C_WRITE2CDMS(&data_receive,&data_send); - //printf("\n Data received from CDMS is %c\n",data_receive); - i2c_data * i2c_data_r = i2c_data_receive.alloc(); - i2c_data_r->data = data_receive; - i2c_data_r->length = 1; - i2c_data_receive.put(i2c_data_r); + if(i2c_status == 0) + { + + FUNC_I2C_WRITE2CDMS(&data_receive); + //printf("\n Data received from CDMS is %c\n",data_receive); + i2c_data * i2c_data_r = i2c_data_receive.alloc(); + i2c_data_r->data = data_receive; + i2c_data_r->length = 1; + i2c_data_receive.put(i2c_data_r); + } + else if(i2c_status ==1 ) + { + osEvent evt = i2c_data_send.get(); + if (evt.status == osEventMail) + { + i2c_data *i2c_data_s = (i2c_data*)evt.value.p; + //printf("\nData read from CDMS is %c\n",i2c_data_r->data); + data_send = i2c_data_s -> data; + FUNC_I2C_WRITE2CDMS(&data_send); + printf("\nData sent to CDMS is %c\n",data_send); + i2c_data_send.free(i2c_data_s); + i2c_status = 0; + //delete i2c_data_r; + } + } } } @@ -91,7 +112,8 @@ //printf("\n The data send or received by slave is %c\n",data); //(data)++; //wait(1); - osEvent evt = i2c_data_receive.get(); + //Remove the comments for receiving data + /* osEvent evt = i2c_data_receive.get(); if (evt.status == osEventMail) { i2c_data *i2c_data_r = (i2c_data*)evt.value.p; @@ -99,7 +121,16 @@ i2c_data_receive.free(i2c_data_r); //delete i2c_data_r; - } - + }*/ + //put in comments for receiving data + data_ready=0; + data = pc.getc(); + i2c_data * i2c_data_s = i2c_data_send.alloc(); + i2c_data_s->data = data; + i2c_data_s->length = 1; + i2c_data_send.put(i2c_data_s); + data_ready=1; + i2c_status=1; + } } \ No newline at end of file