Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Fork of freeslave2_1 by
main.cpp
- Committer:
- greenroshks
- Date:
- 2014-12-10
- Revision:
- 5:ce0bb4174ca4
- Parent:
- 4:133b49d51b18
File content as of revision 5:ce0bb4174ca4:
#include "mbed.h" #include "rtos.h" void write_to_master(char); //function to write data to master Thread * ptr_t_i2c; 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 { char data; // To avoid dynamic memory allocation int length; }i2c_data; Mail<i2c_data,16> i2c_data_receive; Mail<i2c_data,16> i2c_data_send; void FUNC_I2C_WRITE2CDMS(char *data, int length=1) { int slave_status = 1; while(slave_status) { slave.address(0x20); if(slave.receive()==1) { slave_status=slave.write(data,length); // printf("\n In the while loop\n"); /*if(!slave_status) { printf("slave wrote %c to master\n\r",*data); }*/ } else if(slave.receive()==3 || slave.receive()==2) { //i2c_data *i2c_data_r = i2c_data_receive.alloc(); slave_status=slave.read(data,length); /*if(!slave_status) { printf("1 read %c from master\n\r",*data); }*/ } //slave.stop(); } printf("2 done"); } void T_I2C_BAE(void const * args) { char data_send,data_receive; //data_send = 'a'; while(1) { Thread::signal_wait(0x1); 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; } } } } void FUNC_INT() { // char * data = new char; //*data = 'a'; ptr_t_i2c->signal_set(0x1); //delete data; } void main() { printf("\nStarted slave... waiting for master\n"); ptr_t_i2c = new Thread(T_I2C_BAE); char data='a'; interrupt.rise(&FUNC_INT); while(1) { //*(data_send)=pc.getc(); //FUNC_I2C_WRITE2CDMS(&data,1); //printf("\n The data send or received by slave is %c\n",data); //(data)++; //wait(1); //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; printf("\nData read from CDMS is %c\n",i2c_data_r->data); 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; } }