Hello,
I have a freedom 16 mite v2 Hc16 controller working with a development board. I write to a memory addressed by CS2 and the chip select pin does not go low and as a result i am not getting an output on my data pins D[15,8].
The codes i wrote are
/*Function name: setpolc*/
void setpolc(int cell,int value) { poke(DACBASE, cell,value); //writing voltage to DAC delay(400); //allow the cell to settle to the new value }
/* Function name: ioboard_init Purpose: Initialize custom I/O board
*/
void ioboard_init(void) {
unsigned int reg=0; // Local variables
poke(REG_PG, PEPAR, 0); // All port E pins belong to E port (no bus ctl) poke(REG_PG, DDRE, 0); // All port E pins are inputs
reg=peekw(REG_PG, CSPAR0); // Get current value of CSPAR0 register reg=reg & 0xFC3F; // Clear bits 6-9 (function of CS2 and CS3 pins) reg=reg | 0x0280; // Set CS2 and CS3 as 8-bit chip selects pokew(REG_PG, CSPAR0, reg); // Write new value to register
pokew(REG_PG, CSBAR2, 0x0400); // CS2 will access 2 KB of memory at $4:0000 pokew(REG_PG, CSBAR3, 0x0500); // CS3 will access 2 KB of memory at $5:0000 pokew(REG_PG, CSOR2, 0x5070); // CS2 & CS3 memory characteristics pokew(REG_PG, CSOR3, 0x5070); // (see interface documentation)
}
I dont see the chip selects going low. And the blink all.c demo program has no effect on cs2 pin
Help in this matter will be very much appreciated