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Fork of new_slave by
main.cpp@1:541e44bb5f9b, 2015-01-22 (annotated)
- Committer:
- sakthipriya
- Date:
- Thu Jan 22 14:37:23 2015 +0000
- Revision:
- 1:541e44bb5f9b
- Parent:
- 0:e2acb437847f
slave debug
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sakthipriya | 0:e2acb437847f | 1 | #include "mbed.h" |
sakthipriya | 0:e2acb437847f | 2 | I2CSlave slave(D14,D15); //configuring pins p27, p28 as I2Cslave |
sakthipriya | 0:e2acb437847f | 3 | Serial pc (USBTX,USBRX); |
sakthipriya | 0:e2acb437847f | 4 | InterruptIn master_intrpt(D9); |
sakthipriya | 0:e2acb437847f | 5 | |
sakthipriya | 0:e2acb437847f | 6 | DigitalOut slave_intrpt(D10); |
sakthipriya | 0:e2acb437847f | 7 | |
sakthipriya | 0:e2acb437847f | 8 | int ack0 = 1; |
sakthipriya | 0:e2acb437847f | 9 | int ack1 = 1; //read/write mode for i2c 0 : write2slave, 1 : write2master |
sakthipriya | 0:e2acb437847f | 10 | |
sakthipriya | 0:e2acb437847f | 11 | |
sakthipriya | 0:e2acb437847f | 12 | char writedata; |
sakthipriya | 0:e2acb437847f | 13 | char readdata; |
sakthipriya | 0:e2acb437847f | 14 | |
sakthipriya | 0:e2acb437847f | 15 | void FUNC_I2C_WRITE2CDMS() |
sakthipriya | 0:e2acb437847f | 16 | { |
sakthipriya | 0:e2acb437847f | 17 | |
sakthipriya | 0:e2acb437847f | 18 | slave.address(0x20); |
sakthipriya | 1:541e44bb5f9b | 19 | while(ack0) |
sakthipriya | 1:541e44bb5f9b | 20 | { |
sakthipriya | 0:e2acb437847f | 21 | if(slave.receive()==1) |
sakthipriya | 0:e2acb437847f | 22 | { |
sakthipriya | 0:e2acb437847f | 23 | ack0=slave.write(&writedata,1); |
sakthipriya | 0:e2acb437847f | 24 | |
sakthipriya | 0:e2acb437847f | 25 | |
sakthipriya | 0:e2acb437847f | 26 | } |
sakthipriya | 0:e2acb437847f | 27 | else if(slave.receive()==3 || slave.receive()==2) |
sakthipriya | 0:e2acb437847f | 28 | { |
sakthipriya | 1:541e44bb5f9b | 29 | ack0=slave.read(&readdata,1); |
sakthipriya | 0:e2acb437847f | 30 | } |
sakthipriya | 1:541e44bb5f9b | 31 | printf("loop"); |
sakthipriya | 0:e2acb437847f | 32 | } |
sakthipriya | 1:541e44bb5f9b | 33 | // if(!ack0 ) |
sakthipriya | 1:541e44bb5f9b | 34 | //{ |
sakthipriya | 1:541e44bb5f9b | 35 | printf("\ndata writen %d\n\r",writedata); |
sakthipriya | 1:541e44bb5f9b | 36 | printf("\n\r data read %d \n",readdata); |
sakthipriya | 1:541e44bb5f9b | 37 | //printf("\n \r %d %d %d %d %d\n",*data_reg,*status_reg,*c1_reg,*c2_reg,*freq_reg); |
sakthipriya | 1:541e44bb5f9b | 38 | /* } |
sakthipriya | 0:e2acb437847f | 39 | else |
sakthipriya | 0:e2acb437847f | 40 | { |
sakthipriya | 0:e2acb437847f | 41 | printf("\n\r data not written to slave \n"); |
sakthipriya | 1:541e44bb5f9b | 42 | }*/ |
sakthipriya | 1:541e44bb5f9b | 43 | |
sakthipriya | 0:e2acb437847f | 44 | } |
sakthipriya | 0:e2acb437847f | 45 | |
sakthipriya | 0:e2acb437847f | 46 | |
sakthipriya | 0:e2acb437847f | 47 | void FUNC_INT() |
sakthipriya | 0:e2acb437847f | 48 | { |
sakthipriya | 0:e2acb437847f | 49 | |
sakthipriya | 0:e2acb437847f | 50 | FUNC_I2C_WRITE2CDMS(); |
sakthipriya | 0:e2acb437847f | 51 | slave_intrpt = 0; |
sakthipriya | 0:e2acb437847f | 52 | } |
sakthipriya | 0:e2acb437847f | 53 | |
sakthipriya | 0:e2acb437847f | 54 | |
sakthipriya | 0:e2acb437847f | 55 | |
sakthipriya | 0:e2acb437847f | 56 | |
sakthipriya | 0:e2acb437847f | 57 | |
sakthipriya | 0:e2acb437847f | 58 | int main() |
sakthipriya | 0:e2acb437847f | 59 | { |
sakthipriya | 0:e2acb437847f | 60 | printf("\n slave started\n\r"); |
sakthipriya | 1:541e44bb5f9b | 61 | slave_intrpt = 0; |
sakthipriya | 0:e2acb437847f | 62 | master_intrpt.rise(&FUNC_INT); |
sakthipriya | 0:e2acb437847f | 63 | while(1) |
sakthipriya | 0:e2acb437847f | 64 | { |
sakthipriya | 0:e2acb437847f | 65 | writedata = pc.getc(); |
sakthipriya | 0:e2acb437847f | 66 | slave_intrpt=1; |
sakthipriya | 0:e2acb437847f | 67 | |
sakthipriya | 0:e2acb437847f | 68 | } |
sakthipriya | 0:e2acb437847f | 69 | |
sakthipriya | 0:e2acb437847f | 70 | } |
sakthipriya | 0:e2acb437847f | 71 |