I am into a project where I need 2 establish communication between ADuc814(Master) and ADuc841(Slave). Master shud Receive data transmitted by Slave. I am unable to establish the comm. I feel there is no response 4rm slave as though master generates the clock and SS pin is low, slave does not response. Is it necessary that both master and slave should operate in same CLOCK?? For Hardware connection, MOSI, MISO, SCLK and SS pins of Master and Slave are connected. Foll is the code Master Code
#include <ADUC814.H> unsigned char Data[20]; //Store SPI Rx data in Memory void Uart_Tx(unsigned char AsciData); //Serial Tx sbit SS = 0xB5; void main() { char i; PLLCON = 0x00; //Core Clk = 16.6777MHz //////////baud 0f 4800//////// RCAP2H = -1; RCAP2L = 0x92; TH2 = -1; TL2 = 0x92; SCON = 0x50; T2CON = 0x34; ////////////////////////////// CFG814 = 0x01; // Enable P3.5,6,7 for SPI SPICON = 0x37; // Master, CPOH=1,CPOL=0 SS = 0; // Slave Select Enable for(i=0;i<20;i++) { SPIDAT = 0x00; // SPI Clock Generate while(!ISPI); ISPI = 0; Data[i] = (unsigned char)SPIDAT; } /////////Serial Tx SPI Data into UART////////// for(i=0;i<20;i++) { Uart_Tx(Data[i]); Uart_Tx('\n'); } ///////////////////////////////////////////// }
Slave Code, ADuC841
void main() { char i; SPICON = 0x24; // Slave, CPOH=1, CPOL=0 for(i=0;i<20;i++) { SPIDAT = 0x38; /*Transmit Dummy Data, Asci of '8' while(!ISPI); ISPI = 0; } }
Friendzzzz Please Help.........
Hi buddy, I value ur comments, bt all the code comments were written just as additional xplanation. I do not intend 2 offend any1s intelligency. Bt it seems d attention got diverted 2 all the various comments instead of the main question. Thts a sad part. Furthr some codes were put on same line bcause of allignment probs while postin. If this clarifies all d doubts or inconvenience, I wud appreciate some suggestions 2 the main problem.
Thnxxxx in advance.
"Thnxxxx"
That must have taken quite some effort -- adding three more X's than required. With so much extra effort, you have demonstrated your eagerness and a keen desire for the help you seek. It almost makes up for all the shortcuts you have posted and key information you have not posted.
You have qualified for a free fortune cookie:
"You will be equally rewarded for your efforts and you will become a rich man with many wives."
would have been far better spent writing proper words, instead of all that stupid SMS abbreviation nonsense!
"I do not intend 2 offend any1s intelligency"
Are you acually typing this on a mobile phone keypad?
If so, fair enough; but if not, that in itself is an offence to anyone's intelligence!
If you have a proper keypad, then type proper words - stop all this cryptic abbreviation!
The language barrier is bad enough as it is, without having to wade through this nonsense.
I do not intend 2 offend any1s intelligency then why do you do so with this gibberish ?
Erik