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while loop removed ( master cant send)
Fork of slave_working_obama by
main.cpp
- Committer:
- greenroshks
- Date:
- 2014-12-19
- Revision:
- 9:baf5de5828c9
- Parent:
- 8:04b912dc2443
- Child:
- 10:f2a8d9ac49d6
File content as of revision 9:baf5de5828c9:
#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); InterruptIn master_reset(D11); DigitalOut data_ready(D10); int i2c_status=0; //read/write mode for i2c 0 : write2slave, 1 : write2master int reset=0; int temp; 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 && interrupt ==1) { slave.address(0x20); if(slave.receive()==1) { slave_status=slave.write(data,length); } else if(slave.receive()==3 || slave.receive()==2) { slave_status=slave.read(data,length); } } printf("\ndone\n\r"); } void T_I2C_BAE(void const * args) { char data_send,data_receive; while(1) { Thread::signal_wait(0x1); //i2c_status = temp; //wait(0.5); printf("\n entered thread\n\r"); if(i2c_status == 0 && reset !=1) { FUNC_I2C_WRITE2CDMS(&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); printf("\n Data received from CDMS is %c\n\r",data_receive); i2c_data_receive.free(i2c_data_r); // This has to be done from a differen thread } else if(i2c_status ==1 && reset !=1) { osEvent evt = i2c_data_send.get(); if (evt.status == osEventMail) { i2c_data *i2c_data_s = (i2c_data*)evt.value.p; data_send = i2c_data_s -> data; FUNC_I2C_WRITE2CDMS(&data_send); printf("\nData sent to CDMS is %c\n\r",data_send); i2c_data_send.free(i2c_data_s); i2c_status = 0; //temp = i2c_status; } } data_ready=0; } } void FUNC_INT() { reset = 0; ptr_t_i2c->signal_set(0x1); } void FUNC_RESET() { reset = 1; } void ir2master() { char data='a'; //data_ready=0; data = pc.getc(); reset =0; i2c_status=1; 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; //temp = i2c_status; } int main() { printf("\n slave started\n\r"); ptr_t_i2c = new Thread(T_I2C_BAE); master_reset.fall(&FUNC_RESET); interrupt.rise(&FUNC_INT); while(1) { ir2master(); } }