PCM6360Q1EVM-PDK: An example of a function for writing to the device register

Hi Nikolay,

The GUI export provides some example code for doing this. Please try this as a starting point!

typedef unsigned char cfg_u8;
typedef union {
struct {
cfg_u8 offset;
cfg_u8 value;
};
struct {
cfg_u8 command;
cfg_u8 param;
};
} cfg_reg;

#define CFG_META_SWITCH (255)
#define CFG_META_DELAY (254)
#define CFG_META_BURST (253)

/* Example C code */
/*
// Externally implemented function that can write n-bytes to the device
// Refer to the device data sheet for more information.
extern int i2c_write(unsigned char *data, int n);
// Externally implemented function that delays execution by n milliseconds
extern int delay(int n);
// Example implementation. Call like:
// transmit_registers(registers, sizeof(registers)/sizeof(registers[0]));
void transmit_registers(cfg_reg *r, int n)
{
int i = 0;
while (i < n) {
switch (r[i].command) {
case CFG_META_SWITCH:
// Used in legacy applications. Ignored here.
break;
case CFG_META_DELAY:
delay(r[i].param);
break;
case CFG_META_BURST:
i2c_write((unsigned char *)&r[i+1], r[i].param);
i += (r[i].param / 2) + 1;
break;
default:
i2c_write((unsigned char *)&r[i], 2);
break;
}
i++;
}
}
*/

cfg_reg registers[] = {
#define CHECKSUM (0)
// -----------------------------------------------------------------------------
// Reset
// -----------------------------------------------------------------------------
// Select Page 0
{ 0x00, 0x00 },
// Reset Device
{ 0x01, 0x01 },
// 1mS Delay
// -----------------------------------------------------------------------------
// Begin Device Memory
// -----------------------------------------------------------------------------
// Page 0 (0x00) Dump
// Select Page 0
{ 0x00, 0x00 },
{ 0x02, 0x81 },

Best,

Zak

Yes, I also read the documentation. But where to get the i2c_write and delay functions for Windows?

Hi Nikolay,

This will depend on entirely on the processor you are using which is why they are not defined here. There may be an existing library of such functions for your processor, but if not then you would need to write one yourself.

Best

Zak

Is there a way other than your PPC3 software to configure the PCM6360Q1EVM-PDK card from a personal computer?
Or maybe your PPC3 software has a Command Line Interface (CLI) that would allow (without using the GUI) to write the necessary settings to the board from the command line?

Thank you for your answer.