Hello! I tried to use the on-board SPI of the Analog Devices ADuC812 but I didn't managed it to work. No Data, no SCLK, the Pins seemed all to be dead at all. Maybe one of you can give me a hint or working sample code. Thanks. Here's some of my code: // Initialize the SPI Interface SPICON = 0x37;// configure SPI port for: 0011,0111 = 0x37 // Fosc/64, CPHA=1, CPOL=0, master IE2 = 0x01; // enable SPI interrupt EA = 1; // enable interrupts ... void send_SPI(unsigned int byte) { SPIDAT = byte; // trigger data transfer }
We are developing a project with ADuC812 in Federal University of Campina Grande, and I wish to communicate two microconverters using the SPI. I have some problems becouse with the flag ISPI becouse the flag don't change in the end of the transmission. Is necessary to use any interrupt routine for to use the flag ISPI? I need more information about this problem. I am sending my code used for transmit a caracter C and to monitore the change in flag ISPI. I noted that the flag don't change. Please look my code, is it wrong? Send me some information, and if possible change the code. If possible, answer me how I may to transmit a byte in a master( micriconverter) for a slave(microconverter). Sincerely, Jaidilson Jó. //Master #include <aduc812.h> #include <stdio.h> #define SPICON_MR 0x33 sbit P3_5 = 0xB5; sbit P3_4 = 0xB4; int i; void main () { P3_5 = 1; // Serial SCON = 0x50; TMOD = 0x20; TR1 = 1; TH1 = 0xFD; IE2 = 0x01; IE = 0x81; TCON = 0x01; IT0 = 1; SPICON = SPICON_MR; P3_5 = 0; P3_4 = 0; SPIDAT = 'C'; //writing a character C for to transmit while((SPICON & 0x80) == 0) { TI=0; SBUF='\n'; while(TI != 1){} printf("%\n",SPICON); while(TI!=1) { } } TI=0; SBUF='\n'; while(TI != 1){} printf("%\n",SPICON); while(TI!=1) { } P3_4 = 1; P3_5 = 1; }