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Hello, I am new to DSP'in, I am use to just doing 8 and 16 bit designs. I am triyng to get started on a 535 blackfin board. I am just trying to use the UARTS and the SPI ports. This is my UART Init Code .. void Uart0Init(void) { *pUART0_LCR = 3; //8 bits *pUART0_IER = 0; // Disable Uart Interupts *pUART0_LCR |= DLAB; //access other set of registers *pUART0_DLH = 0; // These 2 make up the baud rate *pUART0_DLL = 255; *pUART0_LCR &= ~DLAB; // Normal Registers } Then I just write to the UART tx buffer liker this .. *pUART0_THR = data; it does not appear to be working ... I am monitoring the TX pin on the demo board. Anyone want to help out on what I am doing wrong ? For the SPI, here is what I init: void SPI0Init(void) { *pSPI0_CTL = SPE|MSTR|CPHA; // SPI ENABLE; Master Mode; Clock transer on leading edge *pSPI0_FLG = 2; *pSPI0_BAUD = 125; // (System Clock/(2*SPI_BAUD) = SPI Clock } and then write like this .. void SPI0Write(unsigned char data) { *pSPI0_FLG |= 0x100; *pSPI0_TDBR = data; *pSPI0_FLG &= ~0x100; } any help would be appreciate d.. there are a lot less registers in itty bitty micros .. -J |
DSP Newbie
Started by ●November 20, 2003
